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WO2011115273A1 - Power supply system, and data acquiring apparatus for power supply system - Google Patents

Power supply system, and data acquiring apparatus for power supply system Download PDF

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Publication number
WO2011115273A1
WO2011115273A1 PCT/JP2011/056647 JP2011056647W WO2011115273A1 WO 2011115273 A1 WO2011115273 A1 WO 2011115273A1 JP 2011056647 W JP2011056647 W JP 2011056647W WO 2011115273 A1 WO2011115273 A1 WO 2011115273A1
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WO
WIPO (PCT)
Prior art keywords
data acquisition
power supply
supply system
unit
power
Prior art date
Application number
PCT/JP2011/056647
Other languages
French (fr)
Japanese (ja)
Inventor
山田　健
中島　武
池部　早人
Original Assignee
三洋電機株式会社
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Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Publication of WO2011115273A1 publication Critical patent/WO2011115273A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

Definitions

  • the present invention relates to a power supply system and a data acquisition device for the power supply system, and in particular, a power supply system including at least one of a power storage unit and a power generation unit that generates power using renewable energy, and a data acquisition device for the power supply system About.
  • a power supply system including a solar cell module that generates power using renewable energy is known.
  • a power supply system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-218815.
  • the power supply system disclosed in Japanese Patent Application Laid-Open No. 2008-218815 includes a solar cell module, an inverter for connecting the solar cell module to a power system, and a control device (data acquisition unit) that controls the inverter. .
  • the control device can acquire the generated power data of the solar cell module and transmit the generated power data to the management server device (external) via a communication line such as a telephone line, a dedicated line, and the Internet.
  • the management server device monitors the operating state of the solar cell module based on the received generated power data.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a power supply system and a power that can more reliably receive the state of the power supply system externally. It is to provide a data acquisition device for a supply system.
  • a data acquisition device for a power supply system comprises a power storage unit and at least one of a power generation unit that generates power using renewable energy.
  • a data acquisition unit that acquires state information regarding the first communication unit for communicating with the outside, and a first communication unit for communicating with the outside in a predetermined case Data is communicated by selecting at least one of the different second communication units.
  • a power supply system includes at least one of a power storage unit and a power generation unit that generates power using renewable energy, and a data acquisition device, and the data acquisition device includes at least one of the power storage unit and the power generation unit.
  • a data acquisition unit that acquires state information regarding a power supply system including any one of the data acquisition device, the data acquisition unit, a first communication unit for communicating with the outside, and, in a predetermined case, external Data is communicated by selecting at least one of a second communication unit different from the first communication unit for performing communication.
  • data communication with the outside is usually performed by the first communication unit, and in a predetermined case (when the first communication unit cannot transmit or important information is transmitted) In some cases, data communication can also be performed by the second communication unit. Thereby, the status information of the power supply system can be more reliably received outside.
  • the transmission destination (external) when the state information is transmitted by the first communication unit and the transmission destination (external) when the state information is transmitted by the second communication unit are not necessarily the same.
  • the state information may be information regarding either the power storage unit or the power generation unit, and the information may be predetermined data such as an output of the power generation unit and / or temperature data of the power storage unit.
  • the first communication unit and the second communication unit may have only a function of transmitting data to the outside, and have a function of receiving data from the outside as well as a transmission function. Also good.
  • the photovoltaic power generation system 1 As shown in FIG. 1, the photovoltaic power generation system 1 according to the present embodiment is installed in a facility or a house (hereinafter referred to as a house), and outputs a power generated using sunlight.
  • An inverter (power conditioner) 3 that is connected to the power system 100 and outputs the power output from the photovoltaic power generation unit 2 to the power system 100 so as to reversely flow, and a bus that connects the inverter 3 and the power system 100.
  • the power storage unit 5 connected to 4 is mainly provided.
  • the power storage unit 5 is installed outdoors.
  • the power system 100, the photovoltaic power generation unit 2, and the power storage unit 5 are connected via a distribution board 6.
  • a LAN (local area network) 300 is installed in the house, and a user can connect a PC (personal computer) 400 to the Internet 500 via the LAN 300 via broadband.
  • Broadband is an Internet connection method having properties such as high-speed communication using ADSL, cable TV line, optical fiber line, etc., always-on connection, and flat fee.
  • ADSL high-speed communication
  • cable TV line cable TV line
  • optical fiber line etc.
  • flat fee flat fee
  • the power storage unit 5 houses a control device 58.
  • the control device 58 performs overall control of the solar power generation system 1 and sequentially acquires the state of the solar power generation system 1 (the generated power of the solar power generation unit 2, the state of charge of the storage battery 51, etc.).
  • the time series information is stored in time series, and time series information (hereinafter referred to as time series information) regarding the state of the photovoltaic power generation system 1 is periodically transmitted to the external server 600 via the Internet 500. ing.
  • control device 58 determines whether or not the photovoltaic power generation system 1 is in the specific state based on the acquired time series information, and also when the solar power generation system 1 is determined to be in the specific state, Information indicating that it is in a specific state (hereinafter referred to as specific information) is configured to be transmitted to the external server 600 via the Internet 500.
  • the external server 600 stores the received information, and the user can check the state of the solar power generation system 1 by accessing the external server 600 with the PC 400. Further, the external server 600 transmits information to the maintenance company 700 that manages the photovoltaic power generation system 1 when necessary based on the received information (time-series information and specific information).
  • the time series information and the specific information are examples of the “state information” in the present invention. The transmission of time series information and specific information will be described in detail later.
  • the solar power generation unit 2 includes four solar cell strings 22 in which six solar cell modules 21 are connected in series.
  • the solar cell module 21 can be configured using various types of solar cells such as a thin film silicon system, a crystalline silicon system, or a compound semiconductor system.
  • the solar cell module 21 is an example of the “power generation unit” in the present invention.
  • the three solar cell strings 22 (22a) are connected to the inverter 3 via the DC connection box 7. Further, one solar cell string 22 (22b) is connected to either the DC connection box 7 or the power storage unit 5 via the series / parallel switching unit 8 so as to be selectively switchable.
  • the series-parallel switching unit 8 connects the six solar cell modules 21 of the solar cell string 22b in a serial connection state in which all of the six solar cell modules 21 are connected in series, and two solar cell modules 21 are connected in series. It is possible to switch to a parallel connection state in which the three sets are connected in parallel.
  • the series / parallel switching unit 8 is configured to connect the solar cell string 22b to the DC connection box 7 in the series connection state and to connect the solar cell string 22b to the power storage unit 5 in the parallel connection state.
  • the DC connection box 7 is configured to combine the power generated from the plurality of solar cell strings 22 into one and output it to the inverter 3 side.
  • the inverter 3 has a function of converting DC power output from the DC connection box 7 into AC.
  • the photovoltaic power generation unit 2 is linked to the power system 100 via an inverter 3 (power conditioner).
  • the distribution board 6 is connected to a general AC load 200 and a DC load 210 via a rectifying unit 9 having a switch function.
  • the switch 9a of the rectifying unit 9 has a state in which the DC load 210 is connected to the distribution board 6 side (power system 100 side) via the converter 9b and a state in which the DC load 210 is connected to the storage battery 51 of the power storage unit 5. It is possible to switch.
  • the distribution board 6 is connected to an AC load 220 through an inverter 53 that is housed in the power storage unit 5 and has a switch function.
  • the switch 53b of the inverter unit 53 has a state where the AC load 220 is connected to the distribution board 6 side (the power system 100 side) and a state where the AC load 220 is connected to the storage battery 51 of the power storage unit 5 via the inverter 53a. It is possible to switch.
  • the DC load 210 and the AC load 220 are loads specified in advance (specific loads) unlike the general AC load 200. It is desired that the specific load is always supplied with electric power from the power source, and includes devices that need to operate constantly.
  • a power sensor 10 is provided on the bus 4 that connects the inverter (power conditioner) 3 and the power system 100.
  • a power detection unit 10a and a power detection unit 10b are provided on the upstream side (power system 100 side) and the downstream side (solar power generation unit 2 side) of the distribution board 6, respectively.
  • the power detection unit 10a can detect power (power purchased) supplied from the power system 100 to the photovoltaic power generation system 1 side.
  • the power detection unit 10b can detect the generated power of the solar power generation unit 2.
  • the power storage unit 5 includes a storage battery 51 that stores power from the power system 100, a converter unit 52 that converts power from AC to DC, and power from the storage battery 51 or the bus 4 to the AC load 220 side.
  • the inverter unit 53 for supplying the battery, the two switches 54 and 55 used for switching the charge and discharge of the storage battery 51, and the devices such as the storage battery 51, the converter unit 52, the inverter unit 53, and the switches 54 and 55 are controlled. It mainly includes a control device 58. These devices are housed together in the housing 59 and can be handled as one unit.
  • a secondary battery for example, a lithium ion storage battery having a low natural discharge and a high charge / discharge efficiency is used.
  • the storage battery 51 is an example of the “power storage unit” in the present invention.
  • the converter unit 52 is provided to supply power from the power system 100 to the storage battery 51 by converting AC power from the power system 100 into DC power by the AC / DC converter 52a.
  • a switch that can be switched on / off is provided in a portion closer to the AC / DC converter 52a than the contact with the switch 53b of the inverter 53. 52b is provided.
  • the switch 52b is configured to be switched on / off according to the temperature of a temperature sensor (not shown) provided in the control device 58. That is, when the temperature of the temperature sensor is equal to or lower than a predetermined temperature, the switch 52b is turned on, and power from the bus 4 side is supplied to the converter unit 52. When the temperature of the temperature sensor exceeds a predetermined temperature, the switch 52b is turned off, and the electrical connection between the bus 4 side and the converter unit 52 is disconnected. On / off of the switch 52b is controlled by the control device 58.
  • the electric power of the control device 58 is taken from the wiring between the switch 52b and the AC / DC converter 52a and between the storage battery 51 and the switches 54 and 55.
  • the control device 58 operates with the electric power of the storage battery 51 and turns off the switches 54 and 55 according to the temperature sensor abnormality detection mode.
  • the switch 52b is turned off, the power is driven while the remaining amount of the storage battery 51 is present, and the drive of the control device 58 is automatically stopped when the remaining amount of the storage battery 51 is exhausted. ing.
  • the control device 58 stops, the output from the AC / DC converter 52a is turned off (the power supply to the AC / DC converter 52a is also cut off), and the switches 54 and 55 are turned off.
  • the switch 55 is turned off, the power supply to the inverter 53a is cut off.
  • the switch 53b is switched to connect the AC load 220 and the bus 4 as will be described later.
  • the switch 53b is connected to the storage battery 51 side and the switch 52b is turned on, so that the inside of the housing 59 is outside the predetermined temperature range.
  • the switch 53b is connected to the bus 4 side and the switch 52b is turned off.
  • the converter unit 52, the storage battery 51, the inverter 53a, and the control device 58 that are heat sources are maintained while maintaining the power supply from the bus 4 side to the AC load 220. It is possible to stop.
  • the switch 54 is provided on a charging path between the converter unit 52 and the series-parallel switching unit 8 and the storage battery 51.
  • the switch 54 is turned on when the storage battery 51 is charged with the power from the solar battery string 22 or the power from the bus 4 to the storage battery 51.
  • Switch 55 is provided on a discharge path between storage battery 51, inverter unit 53, and DC load 210. The switch 55 is turned on when discharging from the storage battery 51 and supplying power to the AC load 220 or the DC load 210.
  • the inverter unit 53 includes an inverter 53a as a DC-AC converter for supplying power of the storage battery 51 that outputs DC power to an AC load 220 driven by an AC power source, and a switch 53b.
  • the switch 53b is normally connected to the bus 4 side, and the inverter 53a is preferably connected to the storage battery 51 when power is supplied to the inverter 53a, preferably when the power above the predetermined voltage is supplied to the inverter 53a. Configured to connect to. Therefore, when the power supply to the inverter 53a is cut off as described above, the switch 53b is switched to connect the AC load 220 and the bus 4.
  • control device 58 determines the output of the AC / DC converter 52a and the switching of the switches 54 and 55 based on the charge amount of the storage battery 51, the detection result of the temperature sensor, the current time (whether or not it is the midnight time zone), and the like.
  • the inverter unit 53 has a function of controlling switching of the switch 53b and the switch 52b. Specifically, the control device 58 turns off the switch 52b when determining that the temperature inside the housing 59 is outside a predetermined temperature range based on the detection result of the temperature sensor.
  • control device 58 In a normal state (a state within a predetermined temperature range), the control device 58 turns on / off each switch such as the switches 54 and 55, the converter unit 52, and the switch 53b of the inverter unit 53 based on a predetermined program. To control.
  • the control device 58 charges the storage battery 51 from the power system 100 during normal operation, for example, at midnight, and when it is necessary to supply power to the AC load 220, the storage battery 51 transfers the AC load 220 and the direct current regardless of day or night. Each switch is controlled to supply power to the load 210.
  • the controller 58 controls the discharge of the storage battery 51 so that the capacity of the storage battery 51 does not fall below a predetermined threshold (for example, 50% of the fully charged state) even when the storage battery 51 is discharged during normal operation. .
  • control device 58 determines that the capacity of the storage battery 51 has become equal to or less than the threshold value, the control device 58 stops supplying power from the storage battery 51 to the AC load 220 and directly from the bus 4 to the AC load 220 and the DC load 210. Switch each switch to supply power.
  • the control device 58 In the event of an emergency such as a power failure, the control device 58 is driven by this power while the storage battery 51 remains.
  • the voltage signal of the bus 4 is input to the switch 55, and the control device 58 detects that no voltage is applied to the bus 4 and turns on the switch 55.
  • the inverter 53 a is operated by supplying power from the storage battery 51.
  • the control device 58 turns off the switch 52b, the switch 54, and the switch 55 and stops. Thereby, since electric power is not supplied also to the converter part 52, the drive of the converter part 52 is also stopped.
  • control device 58 controls not only the devices in the power storage unit 5 but also the series / parallel switching unit 8 and the rectifying unit 9. Further, in the present embodiment, the control device 58 includes each unit of the photovoltaic power generation system 1 (the photovoltaic power generation unit 2, the series / parallel switching unit 8, the power sensor 10, the rectification unit 9, the storage battery 51, the switches 54 and 55, the inverter unit. 53, converter unit 52, etc.) are sequentially acquired. Specifically, the time series information includes the generated power, voltage, current value, purchased power value of the photovoltaic power generation unit 2, each switch (switches in the series-parallel switching unit 8, switches 54 and 55, etc.).
  • the control device 58 acquires the above time series information at regular intervals every 1 to 10 seconds, and stores the time series information in the memory 58a in time series.
  • the control device 58 is an example of the “data acquisition unit” and “data acquisition device” in the present invention.
  • the acquisition time interval of the time series information exemplified as the regular interval every 1 to 10 seconds is an example of the “acquisition time interval” in the present invention.
  • control device 58 periodically (for example, once a day) acquires time series information acquired at the above-described regular intervals (for example, every 1 to 10 seconds) and stored in the memory 58a in a time series. It is configured to transmit to the external server 600 via the Internet 500.
  • the control device 58 can transmit information by two transmission means. That is, a wireless LAN communication unit 60 that can be connected to the LAN 300 is installed in the housing 59, and the control device 58 connects to the Internet 500 via the LAN 300, and sends time-series information to the external server 600. It is possible to send. This information transmission of the control device 58 via the LAN 300 is hereinafter referred to as LAN transmission.
  • a mobile phone communication unit 61 that can be connected to the Internet 500 using a mobile phone communication network is installed in the housing 59, and the control device 58 includes a base station 800 for mobile phone communication (FIG. 1). It is possible to send information to the external server 600 via the reference). Information transmission using this cellular phone communication network is hereinafter referred to as cellular phone transmission. Note that the allowable data amount for LAN transmission is larger than the allowable data amount for mobile phone transmission.
  • the wireless LAN communication unit 60 and the mobile phone communication unit 61 are examples of the “first communication unit” and the “second communication unit” of the present invention, respectively.
  • the mobile phone communication unit 61 is an example of the “wireless communication device” in the present invention.
  • the control device 58 is configured to preferentially perform LAN transmission and perform mobile phone transmission in a predetermined case. Since the time series information of the solar power generation system 1 has a large amount of data, when it can be connected to the Internet 500 via the LAN 300, the data of the time series information is quickly added by transmitting by LAN transmission. It is possible to send without charge.
  • the control device 58 stores the data of the time series information that could not be transmitted in the memory 58a. Send along with the next transmission.
  • the memory 58a of the control device 58 can store, for example, time series information for a maximum of one year.
  • the control device 58 is configured to delete the time series information transmitted by LAN transmission from the memory 58a.
  • control device 58 attempts LAN transmission every day, and performs mobile phone transmission as an alternative means of LAN transmission when a period during which LAN transmission cannot be performed continues for a predetermined period (for example, one week).
  • a predetermined period for example, one week.
  • mobile phone transmission unlike the LAN 300, since the user cannot freely operate a device such as a router for connecting to the Internet 500, it is possible to reliably connect to the Internet 500.
  • the control device 58 When transmitting time series information by mobile phone transmission, the control device 58 reduces the data amount of the time series information for transmission. For example, the control device 58 reduces the amount of data to be transmitted by extracting only the peak value or reducing the data evenly on the time axis. The amount of data may be reduced by compressing the data. Note that the control device 58 does not delete the original time-series information before reducing the data amount of the time-series information transmitted by mobile phone transmission by reducing the data amount from the memory 58a. In this case, complete data is transmitted again to the external server 600 when the LAN transmission is ready later, and then deleted from the memory 58a.
  • the control apparatus 58 judges whether the solar power generation system 1 is a specific state based on the acquired time series information of the solar power generation system 1, and judges that the solar power generation system 1 is a specific state.
  • the specific information indicating that the photovoltaic power generation system 1 is in the specific state is immediately transmitted to the external server 600 regardless of the transmission timing of the time series information once a day.
  • Specific information includes, for example, that the generated power of the photovoltaic power generation unit 2 is out of a predetermined range, the temperature of the storage battery 51 is out of a predetermined range, the overcharge / discharge of the storage battery 51, and the ON of each switch. Information such as / off.
  • control device 58 is configured to first transmit the specific information by LAN transmission.
  • the control device 58 immediately sends the specific information to the external server 600 by the mobile phone transmission without waiting for a predetermined period (for example, one week) as in the case of the time series information. Configured to send.
  • a liquid crystal display unit 62 is provided in the housing 59, and the control device 58 is configured to display the time series information and the specific information on the liquid crystal display unit 62. .
  • the maintenance company can grasp
  • step S ⁇ b> 1 the control device 58 acquires time series information from each part of the photovoltaic power generation system 1. And in step S2, the control apparatus 58 judges whether the solar power generation system 1 is in a specific state based on the acquired time series information. If not in the specific state, in step S3, the control device 58 stores the state information as time-series information in the memory 58a.
  • step S4 the control device 58 determines whether or not time series information has been accumulated for one day. If it is not accumulated for one day, the control device 58 returns to step S1 and continues to acquire time-series information. Further, when the data for one day is accumulated, in step S5, the control device 58 transmits the time series information accumulated so far to the external server 600 by LAN transmission.
  • step S6 the control device 58 determines whether or not the LAN transmission is successful.
  • the control device 58 deletes the transmitted time series information from the memory 58a in step S7, and returns to step S1.
  • the control device 58 determines whether or not the LAN transmission failure continues for a predetermined period (for example, one week) in step S8. If the LAN transmission failure continues for a predetermined period, the control device 58 performs mobile phone transmission in step S9 with the data amount of the time-series information to be transmitted reduced, and returns to step S1. If the LAN transmission failure has not continued for a predetermined period, the control device 58 returns to step S1 while retaining the storage of the time-series information that has not been transmitted, and continues to acquire the time-series information.
  • step S10 the control device 58 transmits the specific information via LAN.
  • step S11 the control device 58 determines whether or not the LAN transmission is successful. If the LAN transmission is successful, the process returns to step S1. If the LAN transmission fails, in step S12, the control device 58 transmits specific information by mobile phone transmission, and returns to step S1.
  • the control device 58 preferentially transmits the time series information and specific information of the solar power generation system 1 to the external server 600 by LAN transmission, and in a predetermined case, the solar power generation
  • the time series information and specific information of the system 1 are transmitted to the external server 600 by mobile phone transmission.
  • the time series information and specific information of the photovoltaic power generation system 1 are normally transmitted to the external server 600 by LAN transmission, and in a predetermined case (when transmission by LAN transmission is not possible), the photovoltaic power generation system is also transmitted by mobile phone transmission.
  • 1 status information can be transmitted to the external server 600.
  • the external server 600 can reliably receive the time-series information and the specific information of the solar power generation system 1, and the external server 600 can reliably grasp the state of the solar power generation system 1.
  • the control device 58 transmits the time series information and specific information of the photovoltaic power generation system 1 to the external server 600 using LAN transmission, and also transmits to the external server 600 by LAN transmission.
  • the status information of the photovoltaic power generation system 1 is transmitted to the external server 600 using the mobile phone transmission.
  • the time series information and specific information of the solar power generation system 1 using cellular phone transmission Can be transmitted to the external server 600.
  • the external server 600 can grasp
  • the control device 58 transmits the time-series information to the mobile phone when the state in which the time-series information cannot be transmitted to the external server 600 by LAN transmission continues for a predetermined period (one week). It transmits to the external server 600 using transmission.
  • a predetermined period one week
  • the time series information of the photovoltaic power generation system 1 is externally used without using cellular phone transmission. It can be transmitted to the server 600.
  • the time series information can be transmitted to the external server 600 using the mobile phone transmission.
  • the control device 58 transmits time-series information by LAN transmission when a state in which time-series information cannot be transmitted to the external server 600 by LAN transmission continues for a predetermined period. In a state in which the data amount is smaller than that, the data is transmitted to the external server 600 using mobile phone transmission.
  • the time series information can be easily obtained. Can be sent.
  • the control device 58 when the specific information is transmitted to the external server 600, the control device 58 does not transmit the specific information to the external server 600 by LAN transmission. Without waiting for the period, the specific information is transmitted to the external server 600 using mobile phone transmission.
  • time series information with low urgency is transmitted by mobile phone transmission after waiting for a predetermined period to return to a state where LAN transmission can be used, while specific information with high urgency is Without waiting for this period, it can be transmitted to the external server 600 by mobile phone transmission immediately. Thereby, the specific information of the photovoltaic power generation system 1 can be immediately notified to the external server 600.
  • the control device 58 transmits time-series information and specific information to the external server 600 by LAN transmission using the facilities of the house where the solar power generation unit 2 is installed.
  • the time-series information and the specific information are transmitted to the external server 600 without using the facilities of the house where the solar power generation unit 2 is installed as mobile phone transmission.
  • the time series information of the solar power generation system 1 is usually obtained by using a communication unit (LAN) that allows the user of the solar power generation system 1 to switch communication on / off.
  • LAN communication unit
  • specific information can be transmitted to the external server 600, and when communication by the LAN becomes unavailable, such as when the user stops the communication unit (LAN), the communication unit (cell phone transmission independent of the LAN)
  • the time series information and specific information of the photovoltaic power generation system 1 can be reliably transmitted to the external server 600.
  • the control device 58 when LAN transmission is not possible, performs mobile phone transmission using the mobile phone communication unit 61 that is installed in the housing 59 and can perform wireless communication.
  • the control device 58 unlike the case of wired communication, it is not dependent on the indoor communication environment of the user, and it is not necessary to route the cable in the case 59 installed outdoors, so that mobile phone transmission can be easily performed. .
  • the present invention is not limited thereto, and other renewable energy such as another DC power generation device or a wind power generation device is used as a power generation unit.
  • a power generation module that generates power may be used.
  • the storage battery 51 Although the example using a lithium ion storage battery was shown as the storage battery 51, this invention is not restricted to this, You may use another secondary battery.
  • a storage battery such as a nickel hydride storage battery or a lead storage battery may be used.
  • a capacitor may be used instead of the storage battery.
  • the present invention is not limited to this, and the power storage unit 5 may be installed indoors.
  • the present invention when it judged that the solar power generation system 1 was in a specific state, LAN transmission of specific information was performed first, and when LAN transmission failed, the example which performs mobile telephone transmission was demonstrated,
  • the present invention is not limited to this, and when it is determined that the power supply system is in a specific state, the specific information may be transmitted by mobile phone transmission from the beginning. Moreover, you may transmit specific information using both LAN transmission and mobile telephone transmission.
  • the time series information is transmitted by mobile phone transmission with a reduced data amount.
  • the present invention is not limited to this and may be transmitted as it is.
  • the present invention is not limited to this, and is transmitted to the external server 600 using a dedicated line. May be.
  • the external server 600 cannot directly access the control device 58. Data such as a correction program cannot be transmitted from the external server 600 to the control device 58 via the LAN 300.
  • the external server 600 issues a communication instruction to the control device 58 via the mobile phone communication unit 61 and the control device 58 receives the communication instruction, the external server 600 via the LAN 300 from the control device 58. It is preferable to be configured to access.
  • the LAN 300 has a communication capacity larger than that of the mobile phone communication and the communication fee is a fixed amount. Can be used for efficient communication.
  • the said embodiment demonstrated the example which transmits information via LAN as a 1st communication part and transmits information using a mobile telephone communication network as a 2nd communication part, this invention is not limited to this.
  • the first communication unit may be configured using a communication line other than the LAN
  • the second communication unit may be configured using a communication line other than the mobile phone communication network.
  • the transmission destination may not be a server.
  • it may be transmitted to a personal terminal.
  • the transmission destination when transmitting state information by LAN transmission and the transmission destination when transmitting state information by mobile phone transmission are the same (external server 600) has been described.
  • the invention is not limited to this, and the status information may be transmitted to another transmission destination such as the external server 600 (external) and the maintenance company 700 (external).
  • the said embodiment demonstrated the example in which the control apparatus 58 judged whether the solar power generation system 1 was in a specific state
  • this invention is not limited to this.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Disclosed is a data acquiring apparatus that is provided with a data acquiring section, which acquires state information relating to a power supply system that is provided with a power storage section and/or a power generating section that generates power using regenerable energy. The data acquiring section performs data communication by selecting a first communication section, which performs communication with the outside, and/or a second communication section, which is different from the first communication section and performs communication with the outside in the predetermined case.

Description

電力供給システムおよび電力供給システムのためのデータ取得装置Power supply system and data acquisition device for power supply system
　本発明は、電力供給システムおよび電力供給システムのデータ取得装置に関し、特に、蓄電部および再生可能エネルギーを用いて発電する発電部の少なくともいずれかを備えた電力供給システムおよび電力供給システムのデータ取得装置に関する。 The present invention relates to a power supply system and a data acquisition device for the power supply system, and in particular, a power supply system including at least one of a power storage unit and a power generation unit that generates power using renewable energy, and a data acquisition device for the power supply system About.
　従来、再生可能エネルギーを用いて発電する太陽電池モジュールを備えた電力供給システムが知られている。このような電力供給システムは、たとえば、特開２００８－２１８８１５号公報に開示されている。 Conventionally, a power supply system including a solar cell module that generates power using renewable energy is known. Such a power supply system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-218815.
　上記特開２００８－２１８８１５号公報の電力供給システムは、太陽電池モジュールと、太陽電池モジュールを電力系統に連系するためのインバータと、インバータを制御する制御装置（データ取得部）とを備えている。制御装置は太陽電池モジュールの発電電力データを取得するとともに、その発電電力データを電話回線、専用回線、インターネットなどの通信回線を介して管理サーバ装置（外部）に送信することが可能である。管理サーバ装置では、受信した発電電力データに基づいて、太陽電池モジュールの動作状態の監視を行っている。 The power supply system disclosed in Japanese Patent Application Laid-Open No. 2008-218815 includes a solar cell module, an inverter for connecting the solar cell module to a power system, and a control device (data acquisition unit) that controls the inverter. . The control device can acquire the generated power data of the solar cell module and transmit the generated power data to the management server device (external) via a communication line such as a telephone line, a dedicated line, and the Internet. The management server device monitors the operating state of the solar cell module based on the received generated power data.
特開２００８－２１８８１５号公報JP 2008-218815 A
　しかしながら、上記特開２００８－２１８８１５号公報では、使用している通信回線が何らかの事情で使用できなくなった場合には、太陽電池モジュールの発電電力データを管理サーバ装置に送信することができなくなってしまう。この場合、管理サーバ装置（外部）が太陽電池モジュールの状態を把握することが困難となってしまうという問題点がある。 However, in the above Japanese Patent Laid-Open No. 2008-218815, if the communication line used cannot be used for some reason, the generated power data of the solar cell module cannot be transmitted to the management server device. . In this case, there is a problem that it becomes difficult for the management server device (external) to grasp the state of the solar cell module.
　この発明は、上記のような課題を解決するためになされたものであり、この発明の１つの目的は、電力供給システムの状態をより確実に外部で受信することが可能な電力供給システムおよび電力供給システムのためのデータ取得装置を提供することである。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a power supply system and a power that can more reliably receive the state of the power supply system externally. It is to provide a data acquisition device for a supply system.
　上記目的を達成するために、この発明の第１の局面による電力供給システムのためのデータ取得装置は、蓄電部および再生可能エネルギーを用いて発電する発電部の少なくともいずれかを備えた電力供給システムに関する状態情報を取得するデータ取得部を備え、データ取得部は、外部と通信を行うための第１の通信部と、所定の場合に、外部と通信を行うための第１の通信部とは異なる第２の通信部との少なくともいずれかを選択してデータを通信するように構成されている。 To achieve the above object, a data acquisition device for a power supply system according to a first aspect of the present invention comprises a power storage unit and at least one of a power generation unit that generates power using renewable energy. A data acquisition unit that acquires state information regarding the first communication unit for communicating with the outside, and a first communication unit for communicating with the outside in a predetermined case Data is communicated by selecting at least one of the different second communication units.
　この発明の第２の局面による電力供給システムは、蓄電部および再生可能エネルギーを用いて発電する発電部の少なくともいずれかと、データ取得装置とを備え、データ取得装置は、蓄電部および発電部の少なくともいずれかとデータ取得装置とを備えた電力供給システムに関する状態情報を取得するデータ取得部を含み、データ取得部は、外部と通信を行うための第１の通信部と、所定の場合に、外部と通信を行うための第１の通信部とは異なる第２の通信部との少なくともいずれかを選択してデータを通信するように構成されている。 A power supply system according to a second aspect of the present invention includes at least one of a power storage unit and a power generation unit that generates power using renewable energy, and a data acquisition device, and the data acquisition device includes at least one of the power storage unit and the power generation unit. A data acquisition unit that acquires state information regarding a power supply system including any one of the data acquisition device, the data acquisition unit, a first communication unit for communicating with the outside, and, in a predetermined case, external Data is communicated by selecting at least one of a second communication unit different from the first communication unit for performing communication.
　本発明によれば、通常は外部とのデータの通信（状態情報の送信など）を第１の通信部により行い、所定の場合（第１の通信部により送信できない場合や重要な情報を送信する場合など）には第２の通信部によってもデータの通信を行うことができる。これにより、外部でより確実に電力供給システムの状態情報を受信することができる。なお、第１の通信部により状態情報を送信する際の送信先（外部）と第２の通信部により状態情報を送信する際の送信先（外部）とは必ずしも同一でなくてもよい。また、状態情報は、蓄電部または発電部のいずれかに関する情報であってよく、その情報は、発電部の出力等または／および蓄電部の温度データなどの所定のデータであってよい。また、第１の通信部および第２の通信部は、外部へデータを送信する機能のみを有していてもよいし、送信機能のみならず、外部からデータを受信する機能を有していてもよい。 According to the present invention, data communication with the outside (transmission of status information, etc.) is usually performed by the first communication unit, and in a predetermined case (when the first communication unit cannot transmit or important information is transmitted) In some cases, data communication can also be performed by the second communication unit. Thereby, the status information of the power supply system can be more reliably received outside. It should be noted that the transmission destination (external) when the state information is transmitted by the first communication unit and the transmission destination (external) when the state information is transmitted by the second communication unit are not necessarily the same. Further, the state information may be information regarding either the power storage unit or the power generation unit, and the information may be predetermined data such as an output of the power generation unit and / or temperature data of the power storage unit. Further, the first communication unit and the second communication unit may have only a function of transmitting data to the outside, and have a function of receiving data from the outside as well as a transmission function. Also good.
本発明の一実施形態による太陽光発電システムのデータ通信を示す概念図である。It is a conceptual diagram which shows the data communication of the solar energy power generation system by one Embodiment of this invention. 本発明の一実施形態による太陽光発電システムの詳細構造を説明するための図である。It is a figure for demonstrating the detailed structure of the solar energy power generation system by one Embodiment of this invention. 本発明の一実施形態による太陽光発電システムの制御装置のデータ通信制御を説明するためのフローチャートである。It is a flowchart for demonstrating the data communication control of the control apparatus of the solar energy power generation system by one Embodiment of this invention.
　以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　まず、図１および図２を参照して、本発明の一実施形態による電力供給システム（太陽光発電システム１）の構造を説明する。 First, the structure of a power supply system (solar power generation system 1) according to an embodiment of the present invention will be described with reference to FIGS.
　本実施形態による太陽光発電システム１は、図１に示すように、施設または家屋（以下、家屋と呼ぶ）に設置され、太陽光を用いて発電した電力を出力する太陽光発電部２と、電力系統１００に接続され、太陽光発電部２により出力された電力を逆潮流するように電力系統１００側に出力するインバータ（パワーコンディショナ）３と、インバータ３と電力系統１００とを接続する母線４に接続された蓄電ユニット５とを主に備えている。蓄電ユニット５は、屋外に設置されている。電力系統１００と、太陽光発電部２と蓄電ユニット５とは分電盤６を介して接続されている。 As shown in FIG. 1, the photovoltaic power generation system 1 according to the present embodiment is installed in a facility or a house (hereinafter referred to as a house), and outputs a power generated using sunlight. An inverter (power conditioner) 3 that is connected to the power system 100 and outputs the power output from the photovoltaic power generation unit 2 to the power system 100 so as to reversely flow, and a bus that connects the inverter 3 and the power system 100. The power storage unit 5 connected to 4 is mainly provided. The power storage unit 5 is installed outdoors. The power system 100, the photovoltaic power generation unit 2, and the power storage unit 5 are connected via a distribution board 6.
　家屋においてはＬＡＮ（ローカルエリアネットワーク）３００が設置されており、ユーザはＬＡＮ３００を介してＰＣ（パーソナルコンピュータ）４００をブロードバンドによりインターネット５００に接続することが可能である。なお、ブロードバンドとは、ＡＤＳＬ、ケーブルテレビ回線、光ファイバー回線などを用いた高速通信、常時接続、定額料金などの性質を有するインターネット接続方式である。ブロードバンドによりインターネット接続した場合には、一般的に、常時接続で通信するデータ量の多寡に拘わらず一定の料金となる。 A LAN (local area network) 300 is installed in the house, and a user can connect a PC (personal computer) 400 to the Internet 500 via the LAN 300 via broadband. Broadband is an Internet connection method having properties such as high-speed communication using ADSL, cable TV line, optical fiber line, etc., always-on connection, and flat fee. When connecting to the Internet via broadband, generally, a fixed fee is charged regardless of the amount of data that is always communicated.
　また、蓄電ユニット５には、制御装置５８が収納されている。制御装置５８は、太陽光発電システム１の全体の制御を行っており、太陽光発電システム１の状態（太陽光発電部２の発電電力、蓄電池５１の充電状態など）を逐次的に取得して時系列的に記憶するとともに、太陽光発電システム１の状態に関する時系列的な情報（以下、時系列情報と呼ぶ）を、インターネット５００を介して外部サーバ６００に定期的に送信するように構成されている。また、制御装置５８は、取得した時系列情報に基づいて太陽光発電システム１が特定状態にあるか否かを判断するとともに、特定状態にあると判断した場合にも、太陽光発電システム１が特定状態にあることを示す情報（以下、特定情報と呼ぶ）を、インターネット５００を介して外部サーバ６００に送信するように構成されている。外部サーバ６００は、受信した情報を蓄積しており、ユーザはＰＣ４００により外部サーバ６００にアクセスすることにより、太陽光発電システム１の状態を確認することが可能である。また、外部サーバ６００は、受信した情報（時系列情報および特定情報）に基づいて、必要な場合には太陽光発電システム１の管理を行うメンテナンス会社７００に情報を送信する。なお、時系列情報および特定情報は、本発明の「状態情報」の一例である。時系列情報および特定情報の送信については、後に詳細に説明する。 In addition, the power storage unit 5 houses a control device 58. The control device 58 performs overall control of the solar power generation system 1 and sequentially acquires the state of the solar power generation system 1 (the generated power of the solar power generation unit 2, the state of charge of the storage battery 51, etc.). The time series information is stored in time series, and time series information (hereinafter referred to as time series information) regarding the state of the photovoltaic power generation system 1 is periodically transmitted to the external server 600 via the Internet 500. ing. Further, the control device 58 determines whether or not the photovoltaic power generation system 1 is in the specific state based on the acquired time series information, and also when the solar power generation system 1 is determined to be in the specific state, Information indicating that it is in a specific state (hereinafter referred to as specific information) is configured to be transmitted to the external server 600 via the Internet 500. The external server 600 stores the received information, and the user can check the state of the solar power generation system 1 by accessing the external server 600 with the PC 400. Further, the external server 600 transmits information to the maintenance company 700 that manages the photovoltaic power generation system 1 when necessary based on the received information (time-series information and specific information). The time series information and the specific information are examples of the “state information” in the present invention. The transmission of time series information and specific information will be described in detail later.
　図２に示すように、太陽光発電部２は、６つの太陽電池モジュール２１が直列接続された太陽電池ストリング２２を４つ含んでいる。太陽電池モジュール２１は、薄膜シリコン系や結晶シリコン系、或いは化合物半導体系など、種々の太陽電池を用いて構成することができる。なお、太陽電池モジュール２１は、本発明の「発電部」の一例である。３つの太陽電池ストリング２２（２２ａ）は直流接続箱７を介してインバータ３に接続されている。また、１つの太陽電池ストリング２２（２２ｂ）は、直並列切替部８を介して直流接続箱７または蓄電ユニット５のいずれかに択一的に切替可能に接続されている。直並列切替部８は、太陽電池ストリング２２ｂの６つの太陽電池モジュール２１の接続状態を、６つの太陽電池モジュール２１が全て直列接続された直列接続状態と、２つの太陽電池モジュール２１が直列に接続された３つの組が並列接続された並列接続状態とに切り替えることが可能である。直並列切替部８は、直列接続状態においては太陽電池ストリング２２ｂを直流接続箱７に接続し、並列接続状態においては太陽電池ストリング２２ｂを蓄電ユニット５に接続するように構成されている。 As shown in FIG. 2, the solar power generation unit 2 includes four solar cell strings 22 in which six solar cell modules 21 are connected in series. The solar cell module 21 can be configured using various types of solar cells such as a thin film silicon system, a crystalline silicon system, or a compound semiconductor system. The solar cell module 21 is an example of the “power generation unit” in the present invention. The three solar cell strings 22 (22a) are connected to the inverter 3 via the DC connection box 7. Further, one solar cell string 22 (22b) is connected to either the DC connection box 7 or the power storage unit 5 via the series / parallel switching unit 8 so as to be selectively switchable. The series-parallel switching unit 8 connects the six solar cell modules 21 of the solar cell string 22b in a serial connection state in which all of the six solar cell modules 21 are connected in series, and two solar cell modules 21 are connected in series. It is possible to switch to a parallel connection state in which the three sets are connected in parallel. The series / parallel switching unit 8 is configured to connect the solar cell string 22b to the DC connection box 7 in the series connection state and to connect the solar cell string 22b to the power storage unit 5 in the parallel connection state.
　直流接続箱７は、複数の太陽電池ストリング２２からの発電電力を１つにまとめてインバータ３側に出力するように構成されている。インバータ３は、直流接続箱７から出力された直流の電力を交流に変換する機能を有している。太陽光発電部２は、インバータ３（パワーコンディショナ）を介して電力系統１００に連系されている。 The DC connection box 7 is configured to combine the power generated from the plurality of solar cell strings 22 into one and output it to the inverter 3 side. The inverter 3 has a function of converting DC power output from the DC connection box 7 into AC. The photovoltaic power generation unit 2 is linked to the power system 100 via an inverter 3 (power conditioner).
　また、分電盤６には、一般的な交流負荷２００と、スイッチ機能を有する整流部９を介して直流負荷２１０とが接続されている。整流部９のスイッチ９ａは、直流負荷２１０を分電盤６側（電力系統１００側）にコンバータ９ｂを介して接続する状態と、直流負荷２１０を蓄電ユニット５の蓄電池５１に接続する状態とを切り替えることが可能である。また、分電盤６には、蓄電ユニット５に収納されるとともにスイッチ機能を有するインバータ部５３を介して交流負荷２２０が接続されている。インバータ部５３のスイッチ５３ｂは、交流負荷２２０を分電盤６側（電力系統１００側）に接続する状態と、交流負荷２２０をインバータ５３ａを介して蓄電ユニット５の蓄電池５１に接続する状態とを切り替えることが可能である。なお、直流負荷２１０および交流負荷２２０は、一般的な交流負荷２００と異なり予め特定された負荷（特定負荷）である。特定負荷には常に電源から電力が供給されていることが望まれ、常時動作する必要のある機器が含まれる。 The distribution board 6 is connected to a general AC load 200 and a DC load 210 via a rectifying unit 9 having a switch function. The switch 9a of the rectifying unit 9 has a state in which the DC load 210 is connected to the distribution board 6 side (power system 100 side) via the converter 9b and a state in which the DC load 210 is connected to the storage battery 51 of the power storage unit 5. It is possible to switch. The distribution board 6 is connected to an AC load 220 through an inverter 53 that is housed in the power storage unit 5 and has a switch function. The switch 53b of the inverter unit 53 has a state where the AC load 220 is connected to the distribution board 6 side (the power system 100 side) and a state where the AC load 220 is connected to the storage battery 51 of the power storage unit 5 via the inverter 53a. It is possible to switch. Note that the DC load 210 and the AC load 220 are loads specified in advance (specific loads) unlike the general AC load 200. It is desired that the specific load is always supplied with electric power from the power source, and includes devices that need to operate constantly.
　また、インバータ（パワーコンディショナ）３と電力系統１００とを接続する母線４上には電力センサ１０が設けられている。具体的には、分電盤６の上流側（電力系統１００側）および下流側（太陽光発電部２側）にそれぞれ電力検知部１０ａおよび電力検知部１０ｂが設けられている。電力検知部１０ａは、電力系統１００から太陽光発電システム１側に供給される電力（買電電力）を検知することが可能である。電力検知部１０ｂは、太陽光発電部２の発電電力を検知することが可能である。 A power sensor 10 is provided on the bus 4 that connects the inverter (power conditioner) 3 and the power system 100. Specifically, a power detection unit 10a and a power detection unit 10b are provided on the upstream side (power system 100 side) and the downstream side (solar power generation unit 2 side) of the distribution board 6, respectively. The power detection unit 10a can detect power (power purchased) supplied from the power system 100 to the photovoltaic power generation system 1 side. The power detection unit 10b can detect the generated power of the solar power generation unit 2.
　次に、蓄電ユニット５の構造について説明する。 Next, the structure of the power storage unit 5 will be described.
　図２に示すように、蓄電ユニット５は、電力系統１００からの電力を蓄電する蓄電池５１と、電力を交流から直流に変換するコンバータ部５２と、蓄電池５１または母線４から交流負荷２２０側に電力を供給するためのインバータ部５３と、蓄電池５１の充放電の切替に用いられる２つのスイッチ５４および５５と、蓄電池５１、コンバータ部５２、インバータ部５３、スイッチ５４および５５などの機器の制御を行う制御装置５８とを主に備えている。これらの機器は、筐体５９の内部にまとめて収納されており、１つのユニットとして扱うことが可能である。 As shown in FIG. 2, the power storage unit 5 includes a storage battery 51 that stores power from the power system 100, a converter unit 52 that converts power from AC to DC, and power from the storage battery 51 or the bus 4 to the AC load 220 side. The inverter unit 53 for supplying the battery, the two switches 54 and 55 used for switching the charge and discharge of the storage battery 51, and the devices such as the storage battery 51, the converter unit 52, the inverter unit 53, and the switches 54 and 55 are controlled. It mainly includes a control device 58. These devices are housed together in the housing 59 and can be handled as one unit.
　蓄電池５１としては、自然放電が少なく、充放電効率の高い２次電池（たとえば、リチウムイオン蓄電池）が用いられている。なお、蓄電池５１は、本発明の「蓄電部」の一例である。 As the storage battery 51, a secondary battery (for example, a lithium ion storage battery) having a low natural discharge and a high charge / discharge efficiency is used. The storage battery 51 is an example of the “power storage unit” in the present invention.
　コンバータ部５２は、ＡＣ／ＤＣコンバータ５２ａにより電力系統１００からの交流電力を直流電力に変換することにより、電力系統１００からの電力を蓄電池５１に供給するために設けられている。 The converter unit 52 is provided to supply power from the power system 100 to the storage battery 51 by converting AC power from the power system 100 into DC power by the AC / DC converter 52a.
　また、母線４とＡＣ／ＤＣコンバータ５２ａとの間の電流経路のうち、インバータ部５３のスイッチ５３ｂとの接点よりもＡＣ／ＤＣコンバータ５２ａ側の部分には、オン／オフの切り替えが可能なスイッチ５２ｂが設けられている。このスイッチ５２ｂは、制御装置５８内に設けられた温度センサ（図示せず）の温度に応じてオン／オフが切り替わるように構成されている。すなわち、温度センサの温度が所定の温度以下である場合にはスイッチ５２ｂはオンとなり、母線４側からの電力がコンバータ部５２に供給される。また、温度センサの温度が所定の温度を上回った場合にはスイッチ５２ｂはオフとなり、母線４側とコンバータ部５２との電気的な接続が切断される。スイッチ５２ｂのオン／オフは、制御装置５８によって制御される。 Further, in the current path between the bus 4 and the AC / DC converter 52a, a switch that can be switched on / off is provided in a portion closer to the AC / DC converter 52a than the contact with the switch 53b of the inverter 53. 52b is provided. The switch 52b is configured to be switched on / off according to the temperature of a temperature sensor (not shown) provided in the control device 58. That is, when the temperature of the temperature sensor is equal to or lower than a predetermined temperature, the switch 52b is turned on, and power from the bus 4 side is supplied to the converter unit 52. When the temperature of the temperature sensor exceeds a predetermined temperature, the switch 52b is turned off, and the electrical connection between the bus 4 side and the converter unit 52 is disconnected. On / off of the switch 52b is controlled by the control device 58.
　なお、制御装置５８の電力は、スイッチ５２ｂとＡＣ／ＤＣコンバータ５２ａとの間および蓄電池５１とスイッチ５４、５５の間の配線から取っている。温度センサにより異常を検知し、スイッチ５２ｂがオフになると、制御装置５８は蓄電池５１の電力で動作し、温度センサ異常検知のモードに従って、スイッチ５４、５５をオフにする。スイッチ５２ｂがオフになった場合には、蓄電池５１の残量がある間はこの電力により駆動し、蓄電池５１の残量がなくなることにより制御装置５８の駆動も自動的に停止するように構成されている。また、制御装置５８が停止した場合、ＡＣ／ＤＣコンバータ５２ａからの出力がオフにされ（ＡＣ／ＤＣコンバータ５２ａへの電力供給も断たれている）、スイッチ５４および５５がオフにされる。スイッチ５５がオフにされることによって、インバータ５３ａへの電力供給が断たれるように構成されている。インバータ５３ａへの電力供給が断たれた場合には、後述するように、スイッチ５３ｂは交流負荷２２０と母線４とを接続するように切り替わる。 The electric power of the control device 58 is taken from the wiring between the switch 52b and the AC / DC converter 52a and between the storage battery 51 and the switches 54 and 55. When an abnormality is detected by the temperature sensor and the switch 52b is turned off, the control device 58 operates with the electric power of the storage battery 51 and turns off the switches 54 and 55 according to the temperature sensor abnormality detection mode. When the switch 52b is turned off, the power is driven while the remaining amount of the storage battery 51 is present, and the drive of the control device 58 is automatically stopped when the remaining amount of the storage battery 51 is exhausted. ing. When the control device 58 stops, the output from the AC / DC converter 52a is turned off (the power supply to the AC / DC converter 52a is also cut off), and the switches 54 and 55 are turned off. When the switch 55 is turned off, the power supply to the inverter 53a is cut off. When power supply to the inverter 53a is interrupted, the switch 53b is switched to connect the AC load 220 and the bus 4 as will be described later.
　したがって、筐体５９内の温度が所定の温度範囲以内では、スイッチ５３ｂは蓄電池５１側に接続されているとともに、スイッチ５２ｂはオンにされており、筐体５９内の内部が所定の温度範囲外（たとえば、制御装置５８の内部の温度が所定の温度範囲外）になった場合に、スイッチ５３ｂは母線４側に接続されるとともに、スイッチ５２ｂはオフにされる。これにより、所定の温度範囲内に保てなくなった場合には、母線４側から交流負荷２２０への電力供給を維持したまま、熱源となるコンバータ部５２、蓄電池５１、インバータ５３ａおよび制御装置５８を停止することが可能である。 Therefore, when the temperature in the housing 59 is within the predetermined temperature range, the switch 53b is connected to the storage battery 51 side and the switch 52b is turned on, so that the inside of the housing 59 is outside the predetermined temperature range. When the temperature inside the control device 58 becomes outside the predetermined temperature range, for example, the switch 53b is connected to the bus 4 side and the switch 52b is turned off. As a result, when the temperature cannot be maintained within the predetermined temperature range, the converter unit 52, the storage battery 51, the inverter 53a, and the control device 58 that are heat sources are maintained while maintaining the power supply from the bus 4 side to the AC load 220. It is possible to stop.
　スイッチ５４は、コンバータ部５２および直並列切替部８と、蓄電池５１との間の充電経路上に設けられている。スイッチ５４は、蓄電池５１に太陽電池ストリング２２からの電力または母線４からの電力を蓄電池５１に充電する際にオンにされる。スイッチ５５は、蓄電池５１とインバータ部５３および直流負荷２１０との間の放電経路上に設けられている。スイッチ５５は、蓄電池５１から放電して交流負荷２２０または直流負荷２１０に電力を供給する際にオンにされる。 The switch 54 is provided on a charging path between the converter unit 52 and the series-parallel switching unit 8 and the storage battery 51. The switch 54 is turned on when the storage battery 51 is charged with the power from the solar battery string 22 or the power from the bus 4 to the storage battery 51. Switch 55 is provided on a discharge path between storage battery 51, inverter unit 53, and DC load 210. The switch 55 is turned on when discharging from the storage battery 51 and supplying power to the AC load 220 or the DC load 210.
　インバータ部５３は、直流電力を出力する蓄電池５１の電力を交流電源で駆動される交流負荷２２０に供給するための直流－交流変換器としてのインバータ５３ａと、スイッチ５３ｂとを含んでいる。スイッチ５３ｂは通常母線４側に接続されており、インバータ５３ａは、インバータ５３ａに電力が供給される場合、好ましくは、インバータ５３ａに所定の電圧以上の電力が供給されている場合に、蓄電池５１側に接続するように構成されている。したがって、上述のようにインバータ５３ａへの電力供給が断たれた場合には、スイッチ５３ｂは交流負荷２２０と母線４とを接続するように切り替わる。 The inverter unit 53 includes an inverter 53a as a DC-AC converter for supplying power of the storage battery 51 that outputs DC power to an AC load 220 driven by an AC power source, and a switch 53b. The switch 53b is normally connected to the bus 4 side, and the inverter 53a is preferably connected to the storage battery 51 when power is supplied to the inverter 53a, preferably when the power above the predetermined voltage is supplied to the inverter 53a. Configured to connect to. Therefore, when the power supply to the inverter 53a is cut off as described above, the switch 53b is switched to connect the AC load 220 and the bus 4.
　また、制御装置５８は、蓄電池５１の充電量、温度センサの検知結果、現在時刻（深夜時間帯であるか否か）などに基づいて、ＡＣ／ＤＣコンバータ５２ａの出力、スイッチ５４および５５の切替、インバータ部５３のスイッチ５３ｂおよびスイッチ５２ｂなどの切替などを制御する機能を有する。具体的には、制御装置５８は、温度センサの検知結果に基づいて、筐体５９の内部の温度が所定の温度範囲外であると判断した場合に、スイッチ５２ｂをオフにする。また、正常状態（所定の温度範囲内の状態）では、制御装置５８は、所定のプログラムなどに基づき、スイッチ５４および５５、コンバータ部５２、インバータ部５３のスイッチ５３ｂなどの各スイッチのオン／オフを制御する。 In addition, the control device 58 determines the output of the AC / DC converter 52a and the switching of the switches 54 and 55 based on the charge amount of the storage battery 51, the detection result of the temperature sensor, the current time (whether or not it is the midnight time zone), and the like. In addition, the inverter unit 53 has a function of controlling switching of the switch 53b and the switch 52b. Specifically, the control device 58 turns off the switch 52b when determining that the temperature inside the housing 59 is outside a predetermined temperature range based on the detection result of the temperature sensor. In a normal state (a state within a predetermined temperature range), the control device 58 turns on / off each switch such as the switches 54 and 55, the converter unit 52, and the switch 53b of the inverter unit 53 based on a predetermined program. To control.
　制御装置５８は、通常運転時、たとえば、深夜においては電力系統１００から蓄電池５１に充電を行い、交流負荷２２０に電力を供給する必要が生じたときには昼夜を問わず蓄電池５１から交流負荷２２０および直流負荷２１０に電力を供給するように、各スイッチを制御する。また、制御装置５８は、通常運転時に蓄電池５１の放電を行う場合にも、蓄電池５１の容量が所定の閾値（たとえば、満充電状態の５０％）以下にならないように蓄電池５１の放電を制御する。制御装置５８は、蓄電池５１の容量が閾値以下になったと判断した場合には、蓄電池５１から交流負荷２２０に電力を供給するのを停止するとともに、母線４から直接交流負荷２２０および直流負荷２１０に電力を供給するように各スイッチを切り替える。 The control device 58 charges the storage battery 51 from the power system 100 during normal operation, for example, at midnight, and when it is necessary to supply power to the AC load 220, the storage battery 51 transfers the AC load 220 and the direct current regardless of day or night. Each switch is controlled to supply power to the load 210. In addition, the controller 58 controls the discharge of the storage battery 51 so that the capacity of the storage battery 51 does not fall below a predetermined threshold (for example, 50% of the fully charged state) even when the storage battery 51 is discharged during normal operation. . When the control device 58 determines that the capacity of the storage battery 51 has become equal to or less than the threshold value, the control device 58 stops supplying power from the storage battery 51 to the AC load 220 and directly from the bus 4 to the AC load 220 and the DC load 210. Switch each switch to supply power.
　停電時などの非常時には、蓄電池５１の残量がある間はこの電力により制御装置５８が駆動する。スイッチ５５には母線４の電圧線信号が入力されており、制御装置５８は、母線４に電圧がかかっていないことを検知して、スイッチ５５をオンにする。また、インバータ５３ａは、蓄電池５１からの電力供給によって稼動する。蓄電池５１の残量が少なくなると、制御装置５８は、スイッチ５２ｂ、スイッチ５４、スイッチ５５をオフにして停止する。これにより、コンバータ部５２にも電力が供給されないので、コンバータ部５２の駆動も停止される。 In the event of an emergency such as a power failure, the control device 58 is driven by this power while the storage battery 51 remains. The voltage signal of the bus 4 is input to the switch 55, and the control device 58 detects that no voltage is applied to the bus 4 and turns on the switch 55. Further, the inverter 53 a is operated by supplying power from the storage battery 51. When the remaining amount of the storage battery 51 decreases, the control device 58 turns off the switch 52b, the switch 54, and the switch 55 and stops. Thereby, since electric power is not supplied also to the converter part 52, the drive of the converter part 52 is also stopped.
　また、制御装置５８は、蓄電ユニット５内の機器のみならず、直並列切替部８や整流部９の制御も行う。さらに、本実施形態では、制御装置５８は、太陽光発電システム１の各部（太陽光発電部２、直並列切替部８、電力センサ１０、整流部９、蓄電池５１、スイッチ５４および５５、インバータ部５３、コンバータ部５２など）の時系列情報を逐次取得するように構成されている。時系列情報は、具体的には、太陽光発電部２の発電電力、電圧、電流の値、買電電力の値、各スイッチ（直並列切替部８の内部のスイッチ、スイッチ５４および５５など）の動作状況、蓄電池５１の充電状態、充電電圧、放電電圧および温度などである。制御装置５８は、たとえば、１秒から１０秒毎に定間隔で上記の時系列情報を取得するとともに、メモリ５８ａに時系列的に記憶する。なお、制御装置５８は、本発明の「データ取得部」および「データ取得装置」の一例である。また、１秒から１０秒毎の定間隔として例示した時系列情報の取得時間間隔は、本発明の「取得時間間隔」の一例である。 In addition, the control device 58 controls not only the devices in the power storage unit 5 but also the series / parallel switching unit 8 and the rectifying unit 9. Further, in the present embodiment, the control device 58 includes each unit of the photovoltaic power generation system 1 (the photovoltaic power generation unit 2, the series / parallel switching unit 8, the power sensor 10, the rectification unit 9, the storage battery 51, the switches 54 and 55, the inverter unit. 53, converter unit 52, etc.) are sequentially acquired. Specifically, the time series information includes the generated power, voltage, current value, purchased power value of the photovoltaic power generation unit 2, each switch (switches in the series-parallel switching unit 8, switches 54 and 55, etc.). Operating state, charging state of the storage battery 51, charging voltage, discharging voltage, temperature, and the like. For example, the control device 58 acquires the above time series information at regular intervals every 1 to 10 seconds, and stores the time series information in the memory 58a in time series. The control device 58 is an example of the “data acquisition unit” and “data acquisition device” in the present invention. In addition, the acquisition time interval of the time series information exemplified as the regular interval every 1 to 10 seconds is an example of the “acquisition time interval” in the present invention.
　また、制御装置５８は、上記の定間隔（たとえば、１秒から１０秒毎）で取得してメモリ５８ａに時系列的に記憶した時系列情報を、定期的に（たとえば、１日に一度）インターネット５００を介して外部サーバ６００に送信するように構成されている。ここで、制御装置５８は、情報の送信を２つの送信手段により行うことが可能である。すなわち、筐体５９内にはＬＡＮ３００に接続することが可能な無線ＬＡＮ通信部６０が設置されており、制御装置５８は、ＬＡＮ３００を介してインターネット５００に接続し、時系列情報を外部サーバ６００に送信することが可能である。このＬＡＮ３００を介した制御装置５８の情報送信を、以下、ＬＡＮ送信と呼ぶ。また、筐体５９内には携帯電話通信網を用いてインターネット５００に接続することが可能な携帯電話通信部６１が設置されており、制御装置５８は、携帯電話通信の基地局８００（図１参照）を介して情報を外部サーバ６００に送信することが可能である。この携帯電話通信網を用いた情報送信を、以下、携帯電話送信と呼ぶ。なお、ＬＡＮ送信のデータ許容量は、携帯電話送信のデータ許容量よりも大きい。また、無線ＬＡＮ通信部６０および携帯電話通信部６１は、それぞれ、本発明の「第１の通信部」および「第２の通信部」の一例である。また、携帯電話通信部６１は、本発明の「無線通信機」の一例である。 In addition, the control device 58 periodically (for example, once a day) acquires time series information acquired at the above-described regular intervals (for example, every 1 to 10 seconds) and stored in the memory 58a in a time series. It is configured to transmit to the external server 600 via the Internet 500. Here, the control device 58 can transmit information by two transmission means. That is, a wireless LAN communication unit 60 that can be connected to the LAN 300 is installed in the housing 59, and the control device 58 connects to the Internet 500 via the LAN 300, and sends time-series information to the external server 600. It is possible to send. This information transmission of the control device 58 via the LAN 300 is hereinafter referred to as LAN transmission. In addition, a mobile phone communication unit 61 that can be connected to the Internet 500 using a mobile phone communication network is installed in the housing 59, and the control device 58 includes a base station 800 for mobile phone communication (FIG. 1). It is possible to send information to the external server 600 via the reference). Information transmission using this cellular phone communication network is hereinafter referred to as cellular phone transmission. Note that the allowable data amount for LAN transmission is larger than the allowable data amount for mobile phone transmission. The wireless LAN communication unit 60 and the mobile phone communication unit 61 are examples of the “first communication unit” and the “second communication unit” of the present invention, respectively. The mobile phone communication unit 61 is an example of the “wireless communication device” in the present invention.
　制御装置５８は、ＬＡＮ送信を優先的に行い、所定の場合に携帯電話送信を行うように構成されている。上記の太陽光発電システム１の時系列情報はデータ量が多いため、ＬＡＮ３００を介してインターネット５００に接続可能である場合には、ＬＡＮ送信により送信することにより、時系列情報のデータを迅速に追加料金なしで送信することが可能である。 The control device 58 is configured to preferentially perform LAN transmission and perform mobile phone transmission in a predetermined case. Since the time series information of the solar power generation system 1 has a large amount of data, when it can be connected to the Internet 500 via the LAN 300, the data of the time series information is quickly added by transmitting by LAN transmission. It is possible to send without charge.
　また、制御装置５８は、ＬＡＮ送信ができない場合（たとえば、ユーザがルータの電源をオフにした場合など）には、送信できなかった時系列情報のデータをメモリ５８ａに記憶したまま残しておき、次回に送信するときに合わせて送信する。制御装置５８のメモリ５８ａは、たとえば最大１年分の時系列情報を記憶することが可能である。また、制御装置５８は、ＬＡＮ送信により送信した時系列情報はメモリ５８ａから削除するように構成されている。 In addition, when the LAN transmission cannot be performed (for example, when the user turns off the power of the router), the control device 58 stores the data of the time series information that could not be transmitted in the memory 58a. Send along with the next transmission. The memory 58a of the control device 58 can store, for example, time series information for a maximum of one year. The control device 58 is configured to delete the time series information transmitted by LAN transmission from the memory 58a.
　また、制御装置５８は、１日毎にＬＡＮ送信を試み、ＬＡＮ送信ができない期間が所定期間（たとえば、１週間）継続した場合には、ＬＡＮ送信の代替手段として、携帯電話送信を行う。携帯電話送信の場合には、ＬＡＮ３００と異なりインターネット５００に接続するためのルータなどの機器をユーザが自由に操作できないので、確実にインターネット５００に接続することが可能である。 Further, the control device 58 attempts LAN transmission every day, and performs mobile phone transmission as an alternative means of LAN transmission when a period during which LAN transmission cannot be performed continues for a predetermined period (for example, one week). In the case of mobile phone transmission, unlike the LAN 300, since the user cannot freely operate a device such as a router for connecting to the Internet 500, it is possible to reliably connect to the Internet 500.
　携帯電話送信により時系列情報を送信する場合には、制御装置５８は、時系列情報のデータ量を減らして送信する。たとえば、制御装置５８は、ピーク値だけを抜き出したり、データを時間軸で均等に減らしたりすることにより、データ量を減らして送信する。データの圧縮を行うことによりデータ量を減らしてもよい。なお、データ量を減らして携帯電話送信により送信した時系列情報のデータ量を減らす前の元の時系列情報については、制御装置５８はメモリ５８ａから削除しない。この場合には、後にＬＡＮ送信ができる状態になったときに再度完全なデータを外部サーバ６００に送信し、その後にメモリ５８ａから削除する。 When transmitting time series information by mobile phone transmission, the control device 58 reduces the data amount of the time series information for transmission. For example, the control device 58 reduces the amount of data to be transmitted by extracting only the peak value or reducing the data evenly on the time axis. The amount of data may be reduced by compressing the data. Note that the control device 58 does not delete the original time-series information before reducing the data amount of the time-series information transmitted by mobile phone transmission by reducing the data amount from the memory 58a. In this case, complete data is transmitted again to the external server 600 when the LAN transmission is ready later, and then deleted from the memory 58a.
　また、制御装置５８は、取得した太陽光発電システム１の時系列情報に基づいて太陽光発電システム１が特定状態であるか否かを判断し、太陽光発電システム１が特定状態であると判断した場合には、時系列情報の１日に一度の送信タイミングには拘わらず、太陽光発電システム１が特定状態にあることを示す特定情報を外部サーバ６００にすぐに送信する。特定情報としては、たとえば、太陽光発電部２の発電電力が所定範囲外になっていること、蓄電池５１の温度が所定範囲外になっていること、蓄電池５１の過充放電および各スイッチのオン／オフなどの情報である。この場合においても、制御装置５８は、特定情報をまずＬＡＮ送信により送信するように構成されている。また、ＬＡＮ送信ができなかった場合には、制御装置５８は、時系列情報の場合のように所定期間（たとえば１週間）を待つことなく、すぐに携帯電話送信により特定情報を外部サーバ６００に送信するように構成されている。 Moreover, the control apparatus 58 judges whether the solar power generation system 1 is a specific state based on the acquired time series information of the solar power generation system 1, and judges that the solar power generation system 1 is a specific state. In this case, the specific information indicating that the photovoltaic power generation system 1 is in the specific state is immediately transmitted to the external server 600 regardless of the transmission timing of the time series information once a day. Specific information includes, for example, that the generated power of the photovoltaic power generation unit 2 is out of a predetermined range, the temperature of the storage battery 51 is out of a predetermined range, the overcharge / discharge of the storage battery 51, and the ON of each switch. Information such as / off. Even in this case, the control device 58 is configured to first transmit the specific information by LAN transmission. When the LAN transmission is not possible, the control device 58 immediately sends the specific information to the external server 600 by the mobile phone transmission without waiting for a predetermined period (for example, one week) as in the case of the time series information. Configured to send.
　また、筐体５９内には液晶表示部６２が設けられており、制御装置５８は、上記の時系列情報および特定情報を、液晶表示部６２に表示することが可能なように構成されている。これにより、メンテナンス業者などが太陽光発電システム１を点検するときなどに、メンテナンス業者が太陽光発電システム１の状態を液晶表示部６２により把握することが可能である。 In addition, a liquid crystal display unit 62 is provided in the housing 59, and the control device 58 is configured to display the time series information and the specific information on the liquid crystal display unit 62. . Thereby, when a maintenance company etc. checks the solar power generation system 1, the maintenance company can grasp | ascertain the state of the solar power generation system 1 with the liquid crystal display part 62. FIG.
　次に、図３を参照して、本発明の一実施形態による太陽光発電システム１の時系列情報および特定情報の制御フローを説明する。 Next, with reference to FIG. 3, the control flow of time series information and specific information of the photovoltaic power generation system 1 according to an embodiment of the present invention will be described.
　まず、ステップＳ１において、制御装置５８は、太陽光発電システム１の各部から時系列情報を取得する。そして、ステップＳ２において、制御装置５８は、取得した時系列情報に基づいて、太陽光発電システム１が特定状態にあるか否かを判断する。特定状態にない場合には、ステップＳ３において、制御装置５８は、状態情報を時系列情報としてメモリ５８ａに記憶する。 First, in step S <b> 1, the control device 58 acquires time series information from each part of the photovoltaic power generation system 1. And in step S2, the control apparatus 58 judges whether the solar power generation system 1 is in a specific state based on the acquired time series information. If not in the specific state, in step S3, the control device 58 stores the state information as time-series information in the memory 58a.
　この後、ステップＳ４において、制御装置５８は、時系列情報が１日分蓄積されたか否かを判断する。１日分蓄積されていない場合には、制御装置５８は、ステップＳ１に戻り、時系列情報の取得を継続する。また、１日分蓄積された場合には、ステップＳ５において、制御装置５８は、それまでに蓄積された時系列情報をＬＡＮ送信により外部サーバ６００に送信する。 Thereafter, in step S4, the control device 58 determines whether or not time series information has been accumulated for one day. If it is not accumulated for one day, the control device 58 returns to step S1 and continues to acquire time-series information. Further, when the data for one day is accumulated, in step S5, the control device 58 transmits the time series information accumulated so far to the external server 600 by LAN transmission.
　この後、ステップＳ６において、制御装置５８は、ＬＡＮ送信が成功したか否かを判断する。ＬＡＮ送信が成功した場合には、制御装置５８は、ステップＳ７において、送信した時系列情報をメモリ５８ａから削除するとともに、ステップＳ１に戻る。また、ステップＳ６においてＬＡＮ送信が失敗した場合には、制御装置５８は、ステップＳ８において、ＬＡＮ送信の失敗が所定期間（たとえば１週間）継続しているか否かを判断する。ＬＡＮ送信の失敗が所定期間継続している場合には、制御装置５８は、ステップＳ９において、送信対象の時系列情報のデータ量を小さくして携帯電話送信を行うとともに、ステップＳ１に戻る。また、ＬＡＮ送信の失敗が所定期間継続していない場合には、制御装置５８は、送信していない時系列情報の記憶を保持したままステップＳ１に戻り、時系列情報の取得を継続する。 Thereafter, in step S6, the control device 58 determines whether or not the LAN transmission is successful. When the LAN transmission is successful, the control device 58 deletes the transmitted time series information from the memory 58a in step S7, and returns to step S1. When the LAN transmission fails in step S6, the control device 58 determines whether or not the LAN transmission failure continues for a predetermined period (for example, one week) in step S8. If the LAN transmission failure continues for a predetermined period, the control device 58 performs mobile phone transmission in step S9 with the data amount of the time-series information to be transmitted reduced, and returns to step S1. If the LAN transmission failure has not continued for a predetermined period, the control device 58 returns to step S1 while retaining the storage of the time-series information that has not been transmitted, and continues to acquire the time-series information.
　また、ステップＳ２において太陽光発電システム１が特定状態にあると判断した場合には、ステップＳ１０において、制御装置５８は、特定情報をＬＡＮ送信する。そして、ステップＳ１１において、制御装置５８は、ＬＡＮ送信が成功したか否かを判断する。ＬＡＮ送信が成功した場合には、ステップＳ１に戻る。また、ＬＡＮ送信が失敗した場合には、ステップＳ１２において、制御装置５８は、携帯電話送信により特定情報の送信を行うとともに、ステップＳ１に戻る。 Further, when it is determined in step S2 that the photovoltaic power generation system 1 is in the specific state, in step S10, the control device 58 transmits the specific information via LAN. In step S11, the control device 58 determines whether or not the LAN transmission is successful. If the LAN transmission is successful, the process returns to step S1. If the LAN transmission fails, in step S12, the control device 58 transmits specific information by mobile phone transmission, and returns to step S1.
　本実施形態では、上記のように、制御装置５８は、太陽光発電システム１の時系列情報および特定情報を優先的にＬＡＮ送信により外部サーバ６００に送信するとともに、所定の場合に、太陽光発電システム１の時系列情報および特定情報を携帯電話送信により外部サーバ６００に送信する。これによって、太陽光発電システム１の時系列情報および特定情報を通常はＬＡＮ送信により外部サーバ６００に送信し、所定の場合（ＬＡＮ送信により送信できない場合）には携帯電話送信によっても太陽光発電システム１の状態情報を外部サーバ６００に送信することができる。これにより、外部サーバ６００は確実に太陽光発電システム１の時系列情報および特定情報を受信することができる、太陽光発電システム１の状態を確実に外部サーバ６００が把握することができる。 In the present embodiment, as described above, the control device 58 preferentially transmits the time series information and specific information of the solar power generation system 1 to the external server 600 by LAN transmission, and in a predetermined case, the solar power generation The time series information and specific information of the system 1 are transmitted to the external server 600 by mobile phone transmission. Thereby, the time series information and specific information of the photovoltaic power generation system 1 are normally transmitted to the external server 600 by LAN transmission, and in a predetermined case (when transmission by LAN transmission is not possible), the photovoltaic power generation system is also transmitted by mobile phone transmission. 1 status information can be transmitted to the external server 600. Thereby, the external server 600 can reliably receive the time-series information and the specific information of the solar power generation system 1, and the external server 600 can reliably grasp the state of the solar power generation system 1.
　また、本実施形態では、上記のように、制御装置５８は、ＬＡＮ送信を用いて太陽光発電システム１の時系列情報および特定情報を外部サーバ６００に送信するとともに、ＬＡＮ送信により外部サーバ６００に時系列情報および特定情報を送信できない場合に、携帯電話送信を用いて太陽光発電システム１の状態情報を外部サーバ６００に送信する。このように構成することによって、太陽光発電システム１の時系列情報および特定情報をＬＡＮ送信により送信できない場合であっても、携帯電話送信を用いて太陽光発電システム１の時系列情報および特定情報を外部サーバ６００に送信することができる。これにより、外部サーバ６００は確実に太陽光発電システム１の時系列情報および特定情報を受信することができるので、太陽光発電システム１の状態を確実に外部サーバ６００が把握することができる。 In the present embodiment, as described above, the control device 58 transmits the time series information and specific information of the photovoltaic power generation system 1 to the external server 600 using LAN transmission, and also transmits to the external server 600 by LAN transmission. When the time series information and the specific information cannot be transmitted, the status information of the photovoltaic power generation system 1 is transmitted to the external server 600 using the mobile phone transmission. By configuring in this way, even when the time series information and specific information of the solar power generation system 1 cannot be transmitted by LAN transmission, the time series information and specific information of the solar power generation system 1 using cellular phone transmission Can be transmitted to the external server 600. Thereby, since the external server 600 can receive the time series information and specific information of the solar power generation system 1 reliably, the external server 600 can grasp | ascertain the state of the solar power generation system 1 reliably.
　また、本実施形態では、上記のように、制御装置５８は、ＬＡＮ送信により外部サーバ６００に時系列情報を送信できない状態が所定の期間（１週間）継続した場合に、時系列情報を携帯電話送信を用いて外部サーバ６００に送信する。これにより、ＬＡＮ送信が使用できない場合であっても、所定の期間内にＬＡＮ送信を使用できる状態に戻った場合には、携帯電話送信を用いずに太陽光発電システム１の時系列情報を外部サーバ６００に送信することができる。また、所定の期間内にＬＡＮ送信が使用できる状態に戻らない場合には、携帯電話送信を用いて時系列情報を外部サーバ６００に送信することができる。 In the present embodiment, as described above, the control device 58 transmits the time-series information to the mobile phone when the state in which the time-series information cannot be transmitted to the external server 600 by LAN transmission continues for a predetermined period (one week). It transmits to the external server 600 using transmission. As a result, even when LAN transmission cannot be used, when the state returns to the state where LAN transmission can be used within a predetermined period, the time series information of the photovoltaic power generation system 1 is externally used without using cellular phone transmission. It can be transmitted to the server 600. Further, when the LAN transmission does not return to a usable state within a predetermined period, the time series information can be transmitted to the external server 600 using the mobile phone transmission.
　また、本実施形態では、上記のように、制御装置５８は、ＬＡＮ送信により外部サーバ６００に時系列情報を送信できない状態が所定の期間継続した場合に、時系列情報をＬＡＮ送信により送信する場合よりもデータ量を小さくした状態で、携帯電話送信を用いて外部サーバ６００に送信する。このように構成することによって、携帯電話送信により時系列情報を送信する場合に、携帯電話送信の通信回線の容量がＬＡＮ送信の通信回線の容量より小さい場合であっても、容易に時系列情報を送信することができる。 In the present embodiment, as described above, the control device 58 transmits time-series information by LAN transmission when a state in which time-series information cannot be transmitted to the external server 600 by LAN transmission continues for a predetermined period. In a state in which the data amount is smaller than that, the data is transmitted to the external server 600 using mobile phone transmission. With this configuration, when transmitting time series information by mobile phone transmission, even if the capacity of the communication line for mobile phone transmission is smaller than the capacity of the communication line for LAN transmission, the time series information can be easily obtained. Can be sent.
　また、本実施形態では、上記のように、制御装置５８は、特定情報を外部サーバ６００に送信する場合には、ＬＡＮ送信により外部サーバ６００に特定情報を送信できない場合であっても、所定の期間を待たずに、携帯電話送信を用いて特定情報を外部サーバ６００に送信する。このように構成することによって、緊急性の低い時系列情報は、ＬＡＮ送信が使用できる状態に戻るのを所定の期間待ってから携帯電話送信により送信する一方、緊急性の高い特定情報は、所定の期間を待たずにすぐに携帯電話送信により外部サーバ６００に送信することができる。これにより、太陽光発電システム１の特定情報を外部サーバ６００にすぐに通知することができる。 In the present embodiment, as described above, when the specific information is transmitted to the external server 600, the control device 58 does not transmit the specific information to the external server 600 by LAN transmission. Without waiting for the period, the specific information is transmitted to the external server 600 using mobile phone transmission. With this configuration, time series information with low urgency is transmitted by mobile phone transmission after waiting for a predetermined period to return to a state where LAN transmission can be used, while specific information with high urgency is Without waiting for this period, it can be transmitted to the external server 600 by mobile phone transmission immediately. Thereby, the specific information of the photovoltaic power generation system 1 can be immediately notified to the external server 600.
　また、本実施形態では、上記のように、制御装置５８は、太陽光発電部２が設置される家屋の設備を利用したＬＡＮ送信によって時系列情報および特定情報を外部サーバ６００に送信するとともに、所定の場合に、携帯電話送信として、太陽光発電部２が設置される家屋の設備を利用せずに時系列情報および特定情報を外部サーバ６００に送信する。このように構成することによって、通常は太陽光発電システム１のユーザが通信のオン／オフの切替などを行うことが可能な通信部（ＬＡＮ）を利用して太陽光発電システム１の時系列情報および特定情報を外部サーバ６００に送信することができるとともに、ユーザがその通信部（ＬＡＮ）を停止した場合などＬＡＮによる通信が使えなくなった場合には、ＬＡＮには依存しない通信部（携帯電話送信）により確実に太陽光発電システム１の時系列情報および特定情報を外部サーバ６００に送信することができる。 In the present embodiment, as described above, the control device 58 transmits time-series information and specific information to the external server 600 by LAN transmission using the facilities of the house where the solar power generation unit 2 is installed. In a predetermined case, the time-series information and the specific information are transmitted to the external server 600 without using the facilities of the house where the solar power generation unit 2 is installed as mobile phone transmission. With this configuration, the time series information of the solar power generation system 1 is usually obtained by using a communication unit (LAN) that allows the user of the solar power generation system 1 to switch communication on / off. And specific information can be transmitted to the external server 600, and when communication by the LAN becomes unavailable, such as when the user stops the communication unit (LAN), the communication unit (cell phone transmission independent of the LAN) The time series information and specific information of the photovoltaic power generation system 1 can be reliably transmitted to the external server 600.
　また、本実施形態では、上記のように、ＬＡＮ送信ができない場合に、制御装置５８は、筐体５９内に設置された無線通信可能な携帯電話通信部６１を用いて携帯電話送信を行う。これにより、有線通信とする場合と異なり、ユーザの屋内の通信環境に依存せず、屋外に設置される筐体５９内にケーブルを引き回す必要がないので、容易に携帯電話送信を行うことができる。 In this embodiment, as described above, when LAN transmission is not possible, the control device 58 performs mobile phone transmission using the mobile phone communication unit 61 that is installed in the housing 59 and can perform wireless communication. Thus, unlike the case of wired communication, it is not dependent on the indoor communication environment of the user, and it is not necessary to route the cable in the case 59 installed outdoors, so that mobile phone transmission can be easily performed. .
　なお、今回開示された実施形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 In addition, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.
　たとえば、上記実施形態では、太陽電池モジュール２１によって発電を行う例について説明したが、本発明はこれに限らず、発電部として他の直流発電装置あるいは風力発電装置などの他の再生可能エネルギーを用いて発電する発電モジュールを用いてもよい。 For example, in the above-described embodiment, an example in which power generation is performed by the solar cell module 21 has been described. However, the present invention is not limited thereto, and other renewable energy such as another DC power generation device or a wind power generation device is used as a power generation unit. Alternatively, a power generation module that generates power may be used.
　また、上記実施形態では、蓄電池５１としてリチウムイオン蓄電池を用いる例を示したが、本発明はこれに限らず、他の２次電池を用いてもよい。たとえば、ニッケル水素蓄電池や鉛蓄電池などの蓄電池を用いてもよい。また、本発明の「蓄電部」の一例として、蓄電池の代わりにキャパシタを用いてもよい。 Moreover, in the said embodiment, although the example using a lithium ion storage battery was shown as the storage battery 51, this invention is not restricted to this, You may use another secondary battery. For example, a storage battery such as a nickel hydride storage battery or a lead storage battery may be used. Further, as an example of the “power storage unit” of the present invention, a capacitor may be used instead of the storage battery.
　また、上記実施形態では、蓄電ユニット５を屋外に設置する例について説明したが、本発明はこれに限らず、蓄電ユニット５を屋内に設置してもよい。 In the above embodiment, the example in which the power storage unit 5 is installed outdoors has been described. However, the present invention is not limited to this, and the power storage unit 5 may be installed indoors.
　また、上記実施形態では、太陽光発電システム１が特定状態にあると判断した場合に、まず特定情報のＬＡＮ送信を行い、ＬＡＮ送信が失敗した場合に携帯電話送信を行う例について説明したが、本発明はこれに限らず、電力供給システムが特定状態にあると判断した場合には最初から携帯電話送信により特定情報の送信を行ってもよい。また、ＬＡＮ送信と携帯電話送信との両方を用いて特定情報の送信を行ってもよい。 Moreover, in the said embodiment, when it judged that the solar power generation system 1 was in a specific state, LAN transmission of specific information was performed first, and when LAN transmission failed, the example which performs mobile telephone transmission was demonstrated, The present invention is not limited to this, and when it is determined that the power supply system is in a specific state, the specific information may be transmitted by mobile phone transmission from the beginning. Moreover, you may transmit specific information using both LAN transmission and mobile telephone transmission.
　また、上記実施形態では、時系列情報のＬＡＮ送信による送信の失敗が所定期間（１週間）継続した場合に携帯電話送信を行う例について説明したが、本発明はこれに限らず、ＬＡＮ送信が失敗した後にすぐに携帯電話送信を行ってもよい。 In the above-described embodiment, an example in which mobile phone transmission is performed when transmission failure due to LAN transmission of time-series information continues for a predetermined period (one week) has been described, but the present invention is not limited thereto, and LAN transmission is not limited to this. The mobile phone transmission may be performed immediately after the failure.
　また、上記実施形態では、時系列情報を携帯電話送信により送信する場合にはデータ量を小さくして送信する例について説明したが、本発明はこれに限らず、そのまま送信してもよい。 In the above embodiment, an example has been described in which the time series information is transmitted by mobile phone transmission with a reduced data amount. However, the present invention is not limited to this and may be transmitted as it is.
　また、上記実施形態では、時系列情報および特定情報をインターネット５００を介して外部サーバ６００に送信する例について説明したが、本発明はこれに限らず、専用回線を用いて外部サーバ６００に送信してもよい。 In the above embodiment, the example in which the time series information and the specific information are transmitted to the external server 600 via the Internet 500 has been described. However, the present invention is not limited to this, and is transmitted to the external server 600 using a dedicated line. May be.
　また、上記実施形態では、ＬＡＮ送信と携帯電話送信との２つの送信手段を設けた例について説明したが、本発明はこれに限らず、３つ以上の送信手段を設けてもよい。 In the above-described embodiment, an example in which two transmission means for LAN transmission and mobile phone transmission are provided has been described. However, the present invention is not limited to this, and three or more transmission means may be provided.
　また、上記実施形態では、ＬＡＮ送信と携帯電話送信との２つの送信手段を太陽光発電システム１から外部サーバ６００に時系列情報などを送信する場合に用いる例について説明したが、外部からデータを制御装置５８が受信する場合にＬＡＮ送信と携帯電話送信との２つの送信手段を用いてもよい。たとえば、外部サーバ６００から更新または修正プログラムなどのデータを制御装置５８に送信する場合に、ＬＡＮ経由で外部サーバ６００から制御装置５８に送信できない場合に、携帯電話通信網を用いて送信するようにしてもよい。 Moreover, although the said embodiment demonstrated the example used when transmitting the time series information etc. from the solar power generation system 1 to the external server 600 using two transmission means, LAN transmission and mobile telephone transmission, data is transmitted from the outside. When the control device 58 receives, two transmission means of LAN transmission and mobile phone transmission may be used. For example, when data such as an update or correction program is transmitted from the external server 600 to the control device 58, if data cannot be transmitted from the external server 600 to the control device 58 via the LAN, the data is transmitted using the mobile phone communication network. May be.
　また、ＬＡＮ３００内の機器のそれぞれにグローバルアドレスが割り振られている場合と異なり、ＬＡＮ３００内の機器をプライベートＩＰアドレスにより区別している場合には、外部サーバ６００から制御装置５８に直接アクセスすることができず、外部サーバ６００から修正プログラムなどのデータを制御装置５８にＬＡＮ３００により送信することができない。この場合には、外部サーバ６００から携帯電話通信部６１を介して制御装置５８に通信指示を行い、その通信指示を制御装置５８が受信した場合に、制御装置５８からＬＡＮ３００を介して外部サーバ６００にアクセスするように構成することが好ましい。これにより、外部サーバ６００から制御装置５８のプログラムの修正プログラムまたは更新プログラムなどのデータを制御装置５８に送信する場合にも、携帯電話通信よりも通信容量が大きく、かつ通信料金が定額であるＬＡＮ３００を用いて、効率的な通信を行うことができる。 Unlike the case where a global address is assigned to each device in the LAN 300, when the devices in the LAN 300 are distinguished by private IP addresses, the external server 600 cannot directly access the control device 58. Data such as a correction program cannot be transmitted from the external server 600 to the control device 58 via the LAN 300. In this case, when the external server 600 issues a communication instruction to the control device 58 via the mobile phone communication unit 61 and the control device 58 receives the communication instruction, the external server 600 via the LAN 300 from the control device 58. It is preferable to be configured to access. Accordingly, even when data such as a correction program or an update program of the program of the control device 58 is transmitted from the external server 600 to the control device 58, the LAN 300 has a communication capacity larger than that of the mobile phone communication and the communication fee is a fixed amount. Can be used for efficient communication.
　また、上記実施形態では、第１の通信部としてＬＡＮ経由で情報を送信し、第２の通信部として携帯電話通信網を用いて情報を送信する例について説明したが、本発明はこれに限らず、第１の通信部をＬＡＮ以外の通信回線を用いて構成し、第２の通信部を携帯電話通信網以外の通信回線を用いて構成してもよい。 Moreover, although the said embodiment demonstrated the example which transmits information via LAN as a 1st communication part and transmits information using a mobile telephone communication network as a 2nd communication part, this invention is not limited to this. Alternatively, the first communication unit may be configured using a communication line other than the LAN, and the second communication unit may be configured using a communication line other than the mobile phone communication network.
　また、上記実施形態では、外部サーバ６００に太陽光発電システム１の状態情報を送信する例について説明したが、本発明はこれに限らず、送信先はサーバでなくてもよい。たとえば、個人端末などに送信してもよい。 In the above embodiment, the example in which the status information of the photovoltaic power generation system 1 is transmitted to the external server 600 has been described. However, the present invention is not limited to this, and the transmission destination may not be a server. For example, it may be transmitted to a personal terminal.
　また、上記実施形態では、ＬＡＮ送信により状態情報を送信する際の送信先と携帯電話送信により状態情報を送信する際の送信先とを同一（外部サーバ６００）とした例について説明したが、本発明はこれに限らず、外部サーバ６００（外部）とメンテナンス会社７００（外部）となど、別の送信先に状態情報を送信してもよい。 In the above-described embodiment, an example in which the transmission destination when transmitting state information by LAN transmission and the transmission destination when transmitting state information by mobile phone transmission are the same (external server 600) has been described. The invention is not limited to this, and the status information may be transmitted to another transmission destination such as the external server 600 (external) and the maintenance company 700 (external).
　また、上記実施形態では、時系列情報に基づいて太陽光発電システム１が特定状態にあるか否かを判断した例について説明したが、本発明はこれに限らず、センサなどの出力に基づいて太陽光発電システム１が特定状態にあるか否かを判断してもよい。 Moreover, although the said embodiment demonstrated the example which determined whether the solar power generation system 1 was in a specific state based on time series information, this invention is not limited to this, Based on output, such as a sensor It may be determined whether the solar power generation system 1 is in a specific state.
　また、上記実施形態では、太陽光発電システム１が特定状態にあるか否かを制御装置５８が判断した例について説明したが、本発明はこれに限られない。本発明では、太陽光発電システム１が特定状態にあるか否かを制御装置５８側で判断しなくてもよい。すなわち、特定状態にあるか否かを判断するために必要な情報を特定情報として太陽光発電システム１から外部サーバ６００や利用者の個人端末などに送信し、その特定情報を受信した外部サーバ６００または利用者の側で特定状態にあるか否かを判断してもよい。 Moreover, although the said embodiment demonstrated the example in which the control apparatus 58 judged whether the solar power generation system 1 was in a specific state, this invention is not limited to this. In the present invention, it is not necessary to determine whether or not the photovoltaic power generation system 1 is in the specific state on the control device 58 side. That is, the external server 600 that transmits information necessary for determining whether or not it is in a specific state from the photovoltaic power generation system 1 to the external server 600 or a user's personal terminal as the specific information and receives the specific information. Alternatively, it may be determined whether the user is in a specific state.

Claims (13)

  1. 　蓄電部および再生可能エネルギーを用いて発電する発電部の少なくともいずれかを備えた電力供給システムに関する状態情報を取得するデータ取得部を備え、
    　前記データ取得部は、外部と通信を行うための第１の通信部と、所定の場合に、外部と通信を行うための前記第１の通信部とは異なる第２の通信部との少なくともいずれかを選択してデータを通信する、電力供給システムのためのデータ取得装置。     A data acquisition unit that acquires state information related to a power supply system including at least one of a power storage unit and a power generation unit that generates power using renewable energy,
    The data acquisition unit includes at least one of a first communication unit for communicating with the outside and a second communication unit different from the first communication unit for communicating with the outside in a predetermined case. A data acquisition device for a power supply system that selects and communicates data.
  2. 　前記所定の場合は、前記第１の通信部により外部と前記状態情報を通信できない場合である、請求項１に記載の電力供給システムのためのデータ取得装置。 The data acquisition device for the power supply system according to claim 1, wherein the predetermined case is a case where the state information cannot be communicated with the outside by the first communication unit.
  3. 　前記所定の場合は、前記第１の通信部により外部と前記状態情報を通信できない状態が所定の期間継続する場合である、請求項１に記載の電力供給システムのためのデータ取得装置。 The data acquisition device for the power supply system according to claim 1, wherein the predetermined case is a case where a state in which the state information cannot be communicated with the outside by the first communication unit continues for a predetermined period.
  4. 　前記第２の通信部により通信される前記状態情報のデータ量は、前記第１の通信部により通信される場合の前記状態情報のデータ量よりも小さい、請求項１に記載の電力供給システムのためのデータ取得装置。 The amount of data of the state information communicated by the second communication unit is smaller than the amount of data of the state information when communicated by the first communication unit. Data acquisition device for.
  5. 　前記状態情報は、前記データ取得部が時系列的に取得する前記電力供給システムの状態に関する時系列情報と、前記データ取得部が取得する前記電力供給システムが特定状態にあるか否かの判断に関する特定情報との少なくともいずれかを含む、請求項１に記載の電力供給システムのためのデータ取得装置。 The state information relates to time series information regarding the state of the power supply system acquired by the data acquisition unit in time series, and determination as to whether or not the power supply system acquired by the data acquisition unit is in a specific state. The data acquisition device for the power supply system according to claim 1, comprising at least one of the specific information.
  6. 　前記データ取得部は、前記時系列情報に基づいて前記電力供給システムが特定状態にあるか否かを判断し、前記電力供給システムが特定状態にあると判断した場合に、前記電力供給システムが特定状態にあることを示す前記特定情報を通信する、請求項５に記載の電力供給システムのためのデータ取得装置。 The data acquisition unit determines whether the power supply system is in a specific state based on the time series information, and determines that the power supply system is specified when the power supply system determines that the power supply system is in a specific state. The data acquisition device for the power supply system according to claim 5, wherein the specific information indicating that it is in a state is communicated.
  7. 　前記データ取得部は、所定の取得時間間隔毎に前記時系列情報を取得するとともに、前記時系列情報を取得する度に、前記電力供給システムが特定状態にあるか否かを判断する、請求項６に記載の電力供給システムのためのデータ取得装置。 The data acquisition unit acquires the time series information at predetermined acquisition time intervals and determines whether the power supply system is in a specific state every time the time series information is acquired. A data acquisition device for the power supply system according to claim 6.
  8. 　前記取得時間間隔は、前記所定の期間よりも短い時間間隔である、請求項７に記載の電力供給システムのためのデータ取得装置。 The data acquisition device for the power supply system according to claim 7, wherein the acquisition time interval is a time interval shorter than the predetermined period.
  9. 　前記データ取得部は、前記第１の通信部として、ローカルエリアネットワークを介して前記状態情報を外部と通信する、請求項８に記載の電力供給システムのためのデータ取得装置。 The data acquisition device for a power supply system according to claim 8, wherein the data acquisition unit communicates the state information with the outside via a local area network as the first communication unit.
  10. 　前記データ取得部が収納される筐体をさらに備え、
    　前記データ取得部は、前記第２の通信部として、前記筐体内に設置された無線通信機を利用して前記状態情報を外部と通信する、請求項９に記載の電力供給システムのためのデータ取得装置。     A housing for storing the data acquisition unit;
    The data for the power supply system according to claim 9, wherein the data acquisition unit communicates the status information with the outside using a wireless communication device installed in the housing as the second communication unit. Acquisition device.
  11. 　前記データ取得部は、前記電力供給システムの外部から前記第２の通信部によりデータの通信指示を受信した場合に、前記第１の通信部により外部と通信接続することにより、外部から前記第１の通信部によりデータを受信することが可能に構成されている、請求項１に記載の電力供給システムのためのデータ取得装置。 When the data acquisition instruction is received from the outside of the power supply system by the second communication unit, the data acquisition unit is connected to the outside by the first communication unit, thereby externally connecting the first The data acquisition device for the power supply system according to claim 1, wherein the data is received by the communication unit.
  12. 　前記データは、前記データ取得部のプログラムの更新情報または修正情報を含む、請求項１１に記載の電力供給システムのためのデータ取得装置。 The data acquisition device for a power supply system according to claim 11, wherein the data includes update information or correction information of a program of the data acquisition unit.
  13. 　蓄電部および再生可能エネルギーを用いて発電する発電部の少なくともいずれかと、
    　データ取得装置とを備え、
    　前記データ取得装置は、前記蓄電部および前記発電部の少なくともいずれかと前記データ取得装置とを備えた電力供給システムに関する状態情報を取得するデータ取得部を含み、
    　前記データ取得部は、外部と通信を行うための第１の通信部と、所定の場合に、外部と通信を行うための前記第１の通信部とは異なる第２の通信部との少なくともいずれかを選択してデータを通信する、電力供給システム。     At least one of a power storage unit and a power generation unit that generates power using renewable energy;
    A data acquisition device,
    The data acquisition device includes a data acquisition unit that acquires state information regarding a power supply system including at least one of the power storage unit and the power generation unit and the data acquisition device,
    The data acquisition unit includes at least one of a first communication unit for communicating with the outside and a second communication unit different from the first communication unit for communicating with the outside in a predetermined case. A power supply system that selects and communicates data.
PCT/JP2011/056647 2010-03-19 2011-03-18 Power supply system, and data acquiring apparatus for power supply system WO2011115273A1 (en)

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