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WO2018152986A1 - Appareil d'alarme de sécurité et système d'alimentation électrique - Google Patents

Appareil d'alarme de sécurité et système d'alimentation électrique Download PDF

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Publication number
WO2018152986A1
WO2018152986A1 PCT/CN2017/088122 CN2017088122W WO2018152986A1 WO 2018152986 A1 WO2018152986 A1 WO 2018152986A1 CN 2017088122 W CN2017088122 W CN 2017088122W WO 2018152986 A1 WO2018152986 A1 WO 2018152986A1
Authority
WO
WIPO (PCT)
Prior art keywords
alarm
coil
transformer
power supply
supply system
Prior art date
Application number
PCT/CN2017/088122
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English (en)
Chinese (zh)
Inventor
马健
马骥
Original Assignee
中领世能（天津）科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中领世能（天津）科技有限公司 filed Critical 中领世能（天津）科技有限公司
Publication of WO2018152986A1 publication Critical patent/WO2018152986A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
    • G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
    • G01R19/16547—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies voltage or current in AC supplies

Definitions

  • the present invention relates to the field of safe power supply technologies, and in particular, to a security alarm device and a power supply system.
  • the current utility power is usually powered by two output lines, one of which is a live line and the other is a zero line.
  • the voltage between the live line and the neutral line is the mains voltage.
  • the mains voltage between the two output lines is output by the high voltage power from the grid via the transformer.
  • the transformer usually consists of a core, a primary coil wound on the core, and a secondary coil, wherein the two ends of the primary coil are connected to the grid, and the two ends of the secondary coil are connected to two output lines.
  • an overvoltage protector is usually provided at the AC output to monitor the voltage of the output line of the mains.
  • the power supply of the output line is cut off by means of an air switch or a relay disconnection to protect the line and the electrical equipment.
  • the existing overvoltage protector has low sensitivity and cannot effectively protect the line when an overvoltage occurs.
  • an object of the present invention is to provide a security alarm device and a power supply system capable of effectively protecting a transmission line when a fault such as an overvoltage occurs in the power grid, thereby improving the safety of the transmission line.
  • an embodiment of the present invention provides a security alarm device, including an induction coil, an alarm chip, and an alarm;
  • the induction coil is configured to be in series with a primary coil of the transformer and generate an inductive signal
  • the alarm chip is configured to receive the sensing signal, and when the sensing signal exceeds a preset value, the alarm chip outputs an alarm activation signal;
  • the alarm is configured to receive the alarm activation signal and issue an alarm based on the alarm activation signal.
  • an embodiment of the present invention provides a first possible implementation of the first aspect, the induction coil being configured to use a current of the primary coil as an inductive signal.
  • the embodiment of the present invention provides a second possible implementation manner of the first aspect, wherein the alarm chip includes a comparison unit and a trigger unit;
  • the comparing unit is configured to receive the sensing signal and compare the sensing signal with the preset value
  • the trigger unit is configured to output an alarm enable signal when the sensing signal exceeds a preset value.
  • an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein a multi-stable trigger is disposed in the trigger unit.
  • an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the alarm includes a buzzer alarm.
  • an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the alarm device further includes a light alarm.
  • an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein a filter capacitor is connected between the alarm chip and the induction coil.
  • an embodiment of the present invention further provides a power supply system including a transformer and the foregoing security alarm device;
  • the induction coil is connected in series with a primary coil of the transformer
  • the secondary coil of the transformer is connected to the AC output.
  • an embodiment of the present invention provides a first possible implementation manner of the second aspect, wherein power terminals of the alarm chip are respectively connected at two ends of the primary coil, and in the primary coil A filter circuit is disposed between one end and the alarm chip.
  • an embodiment of the present invention provides a second possible implementation manner of the second aspect, wherein the core of the transformer is an E-type iron core.
  • an embodiment of the present invention provides a third possible implementation of the second aspect, wherein a primary coil and a secondary coil of the transformer are respectively wound around a magnetic core at both ends of the E-shaped iron core.
  • the embodiment of the present invention provides a fourth possible implementation manner of the second aspect, wherein the two portions of the primary coil of the transformer are respectively wound around the magnetic core at the two ends of the E-shaped core, Two portions of the secondary coil of the transformer are wound around the magnetic cores at both ends of the E-shaped iron core.
  • an embodiment of the present invention provides a fifth possible implementation manner of the second aspect, wherein the transformer further includes a third coil and a fourth coil configured to isolate the clutter, and the third coil And the fourth coil is wound around the core of the E-shaped core.
  • the embodiment of the present invention provides a sixth possible implementation manner of the second aspect, wherein the magnetic core in the middle of the E-shaped core can be expanded and contracted along the extending direction thereof to adjust the third coil and The number of turns of the fourth coil wound on the core between the E-shaped cores.
  • the embodiment of the present invention provides a seventh possible implementation manner of the second aspect, wherein one ends of the third coil and the fourth coil are respectively grounded, and the fourth coil is connected to the ground.
  • an embodiment of the present invention provides an eighth possible implementation manner of the second aspect, further comprising: a first relay and a second relay, wherein the first relay is connected to a protection device of the AC output end, where An output of a relay is coupled in series with a control coil of the second relay, and an output of the second relay is coupled in series with a primary winding of the transformer.
  • the security alarm device includes an induction coil, an alarm chip, and an alarm.
  • the induction coil is arranged in series with the primary coil of the transformer and generates an induced signal equal to the current of the primary coil of the transformer.
  • the alarm chip receives the sensing signal, and when the sensing signal exceeds the preset value, the alarm chip outputs an alarm starting signal.
  • the alarm receives an alarm start signal from the alarm chip and can issue an alarm according to the alarm start signal.
  • the security alarm device and the power supply system provided by the embodiments of the present invention generate an induction signal synchronized with the current level of the primary coil of the transformer by using the induction coil, and use the current magnitude of the induction coil (ie, the current of the primary coil of the transformer) as the power grid.
  • the alarm condition of fault such as overvoltage can improve the sensitivity of circuit protection and protect the transmission line more effectively, thus improving the safety of the transmission line.
  • FIG. 1 is a schematic diagram of a security alarm device according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of an alarm chip in a security alarm device according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram of a power supply system according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic view showing an E-shaped iron core of a coil wound with a transformer according to Embodiment 2 of the present invention.
  • FIG. 5 is another schematic diagram of an E-shaped iron core in which a coil of a transformer is wound in the second embodiment of the present invention.
  • an overvoltage protector is usually provided at the AC output to monitor the voltage of the output line of the mains.
  • the power supply of the output line is cut off by means of an air switch or a relay disconnection to protect the line and the electrical equipment.
  • the existing overvoltage protector has low sensitivity and cannot effectively protect the line when an overvoltage occurs.
  • an object of the present invention is to provide a safety alarm device and a power supply system capable of effectively protecting a transmission line when a fault such as an overvoltage occurs in the power grid, thereby improving the safety of the transmission line.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the embodiment of the invention provides a security alarm device 100, which can be applied to a power supply scenario such as a home, an office, or a factory.
  • the security alarm device 100 includes an induction coil L0, an alarm chip 110, and an alarm 120.
  • the induction coil L0 is arranged in series with the primary coil of the transformer, so the current of the induction coil L0 is synchronized with the magnitude of the current of the primary coil of the transformer, and the current of the induction coil L0 is used as an induction signal.
  • the alarm chip 110 receives the sensing signal, and when the sensing signal exceeds the preset value, the alarm chip 110 outputs an alarm starting signal.
  • the alarm device 120 receives the alarm activation signal from the alarm chip 110 and issues an alarm according to the alarm activation signal.
  • the security alarm device 100 provided by the embodiment of the present invention generates an induction signal synchronized with the current level of the primary coil of the transformer by using the induction coil L0, and uses the current magnitude of the induction coil L0 (ie, the current magnitude of the primary coil of the transformer) as the power grid. Overvoltage and other fault alarms Conditions, therefore, can improve the sensitivity of circuit protection, more effectively protect the transmission line, thereby improving the safety of the transmission line.
  • the two ends of the inductive coil L0 are respectively connected to the two input ends of the alarm chip 110, so that the alarm chip 110 receives the sensing signal generated by the sensing chip.
  • a filter capacitor C0 is connected between one end of the induction coil L0 and the alarm chip 110 to prevent damage to the alarm chip 110 when the amplitude of the induced signal is excessive.
  • the alarm device 120 used in the embodiment of the present invention is an electronic product that sends an alarm to remind or alert the user to take preventive measures in order to prevent or prevent the occurrence of an event.
  • the alarm 120 in the embodiment of the present invention includes a buzzer alarm.
  • the buzzer alarm will sound an alarm to prompt the user to take precautionary measures.
  • the alarm device 120 in the embodiment of the present invention further includes a light alarm.
  • the alarm 120 receives the alarm activation signal from the alarm chip 110, the light alarm will emit an alarm light to prompt the user to take precautionary measures.
  • the alarm chip 110 of the present embodiment includes a comparison unit 111 and a trigger unit 112.
  • the comparing unit 111 receives the sensing signal and compares the sensing signal with a preset value. When the sensing signal exceeds the preset value, the trigger unit 112 outputs an alarm activation signal.
  • a multi-stable flip-flop is provided in the trigger unit, and the multi-stable flip-flop is also referred to as an n-state flip-flop, which is a further development of the bistable contactor. If there is DC coupling between the input of each of the n amplification stages and the output of the remaining stages, then n steady states are obtained under a certain strip, and only one level of conduction is achieved at each steady state, and The rest are closed. In non-binary counting lines, multi-state flip-flops can achieve fast response in many different states, so the response speed is faster than that of the flip-flop.
  • the alarm chip 110 can respond within 0.1 seconds, thereby issuing an alarm start in a very short time. Signals effectively protect the grid and transformers.
  • the security alarm device 100 provided by the embodiment of the present invention generates an induction signal synchronized with the current level of the primary coil of the transformer by using the induction coil L0, and uses the current magnitude of the induction coil L0, that is, the current of the primary coil of the transformer.
  • the alarm condition of the fault such as overvoltage of the power grid can improve the sensitivity of the circuit protection and protect the transmission line more effectively, thereby improving the safety of the transmission line.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • an embodiment of the present invention further provides a power supply system 200, including a transformer TB and the security alarm device 100 provided in the first embodiment.
  • the induction coil L0 is connected in series with the primary coil L1 of the transformer TB, and the secondary coil L2 of the transformer TB is connected to the AC output terminal.
  • the power terminals of the alarm chip 110 are respectively connected to both ends of the primary coil L1, and between one end of the primary coil L1 and the alarm chip 110, a filter circuit composed of a filter resistor R1 and a filter capacitor C1 is disposed.
  • the core of the transformer TB in the embodiment of the present invention is an E-type iron core.
  • the E-shaped core is composed of a transverse core and three longitudinal cores, and a longitudinal core is disposed at both ends and intermediate positions of the transverse core.
  • the primary coil L1 and the secondary coil L2 of the transformer TB are wound around the magnetic cores at both ends of the E-shaped iron core, respectively.
  • the primary coil L1 of the transformer TB is wound on the magnetic core on the left side
  • the secondary coil L2 of the transformer TB is wound on the magnetic core on the right side.
  • the two portions of the primary coil L1 of the transformer TB are respectively wound around the magnetic core at both ends of the E-shaped core, and the two portions of the secondary coil L2 of the transformer TB are respectively wound around the E.
  • the core of both ends of the core are respectively wound around the core.
  • the transformer TB in the embodiment of the present invention further includes a third coil L3 and a fourth coil L4 configured to isolate the clutter, and the third coil L3 and the fourth coil L4 are wound around the core of the E-shaped core .
  • a filter capacitor C2 and a current limiting resistor R2 are connected between the fourth coil L4 and the ground.
  • the primary coil L1 is electromagnetically induced with the third coil L3 and the fourth coil L4, and then electromagnetically induced by the third coil L3 and the fourth coil L4, thereby indirectly energizing the electric energy. It is transmitted from the primary coil L1 to the secondary coil L2. This can isolate the clutter between the primary coil L1 and the secondary coil L2, so that the clutter generated on the primary coil L1 on the grid side does not propagate to the secondary coil L2 to ensure the stability of the AC output.
  • the core in the middle of the E-shaped core can be expanded and contracted along the extending direction thereof to adjust the number of turns of the third coil L3 and the fourth coil L4 wound on the core between the E-shaped cores.
  • the voltage ratio of the primary coil L1 and the secondary coil L2 can be adjusted, thereby adjusting the output voltage of the AC output terminal.
  • the telescopic length of the core in the middle of the E-core can be adjusted manually or automatically by setting the drive mechanism.
  • the power supply system 200 provided by the embodiment of the present invention further includes a first relay J1 and a second relay J2.
  • the first relay J1 can be configured as a protection device connected to the AC output, such as connecting the output of the protection device to the control coil of the first relay J1.
  • the output of the first relay J1 is connected in series with the control coil of the second relay J2, and the output of the second relay J2 is connected in series with the primary coil L1 of the transformer TB.
  • the first relay J1 is a normally closed relay, that is, the output end of the first relay J1 is in a closed state when the control coil is not energized.
  • the second relay J2 is a normally open type relay, that is, the output end of the first relay J1 is in an off state when the control coil is not energized.
  • the control coil of the first relay J1 is not energized, and the output end of the first relay J1 is in a closed state, so the control power supply can supply power to the control coil of the second relay J2 through the first relay J1.
  • the control coil of the second relay J2 is energized, its output terminal is in a closed state to maintain the primary coil L1 of the transformer TB for continuous power supply.
  • the control coil of the first relay J1 When the protection device outputs a power-off signal, the control coil of the first relay J1 is energized to disconnect the output of the first relay J1. Since the output end of the first relay J1 is disconnected, the control coil of the second relay J2 is de-energized, and the output end of the second relay J2 is disconnected, thereby disconnecting the grid from the primary coil L1 of the transformer TB to cut off the power supply system. Power supply of 200 to protect the power supply line.
  • the first relay J1 adopts a normally closed type relay
  • the second relay J2 adopts a normally open type relay, which has the following advantages: in the actual power supply system 200, the output end of the first relay J1 and the second relay may be J2's control coils are connected in series with a variety of relays for different purposes, such as relays for arc protection, overvoltage protection relays, and relays for short circuit protection. These relays also use a normally closed relay, and the output of each relay is connected in series with the control coil of the second relay J2, and when any one of the relays is turned off, the control coil of the second relay J2 can be powered off. Thereby cutting off the power supply of the power system.
  • the power supply system 200 provided by the second embodiment of the present invention has the same technical features as the security alarm device 100 provided in the first embodiment, so that the same technical problem can be solved and the same technical effect can be achieved.
  • the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be a fixed connection or a detachable connection, unless otherwise explicitly defined and defined. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • installation may be a fixed connection or a detachable connection, unless otherwise explicitly defined and defined.
  • connected integrally may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the security alarm device and the power supply system provided by the embodiment of the invention generate an induction signal synchronized with the current level of the primary coil of the transformer by using the induction coil, and the induction coil is
  • the magnitude of the current ie, the current of the primary coil of the transformer
  • the sensitivity of the circuit protection can be improved, and the transmission line can be more effectively protected, thereby improving the safety of the transmission line.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un appareil d'alarme de sécurité (100) et un système d'alimentation électrique (200), qui se rapportent au domaine technique de l'alimentation électrique sans danger et peuvent protéger efficacement une ligne de transmission électrique lorsqu'un défaut, tel qu'une surtension, se produit dans un réseau électrique, ce qui permet d'améliorer la sécurité de la ligne de transmission électrique. L'appareil d'alarme de sécurité (100) comprend une bobine d'induction (L0), une puce d'alarme (110) et une alarme (120), la bobine d'induction (L0) étant conçue pour être connectée en série avec une bobine primaire (L1) d'un transformateur (TB) et générer un signal d'induction ; la puce d'alarme (110) est conçue pour recevoir le signal d'induction et, lorsque le signal d'induction dépasse une valeur prédéfinie, la puce d'alarme (110) délivre un signal de début d'alarme ; et l'alarme (120) est conçue pour recevoir le signal de début d'alarme et émettre une alarme en fonction du signal de début d'alarme.
PCT/CN2017/088122 2017-02-22 2017-06-13 Appareil d'alarme de sécurité et système d'alimentation électrique WO2018152986A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710094393.0 2017-02-22
CN201710094393.0A CN106711936A (zh) 2017-02-22 2017-02-22 安全报警装置以及供电系统

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WO2018152986A1 true WO2018152986A1 (fr) 2018-08-30

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106711936A (zh) * 2017-02-22 2017-05-24 中领世能（天津）科技有限公司 安全报警装置以及供电系统
CN107086554A (zh) * 2017-05-26 2017-08-22 中领世能（天津）科技有限公司 供电系统及其多级保护装置
CN107068370A (zh) * 2017-06-22 2017-08-18 中领世能（天津）科技有限公司 E型变压器以及安全报警装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996517A (en) * 1989-04-06 1991-02-26 Assist, Inc. Household alarm system
CN201867945U (zh) * 2010-12-09 2011-06-15 曾梓桐 报警器
CN204243728U (zh) * 2014-12-13 2015-04-01 广发电器集团有限公司 变压器过载保护报警装置
CN104597313A (zh) * 2015-02-06 2015-05-06 王岩 感应装置及电力系统
CN106711936A (zh) * 2017-02-22 2017-05-24 中领世能（天津）科技有限公司 安全报警装置以及供电系统
CN206432692U (zh) * 2017-02-22 2017-08-22 中领世能（天津）科技有限公司 安全报警装置以及供电系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996517A (en) * 1989-04-06 1991-02-26 Assist, Inc. Household alarm system
CN201867945U (zh) * 2010-12-09 2011-06-15 曾梓桐 报警器
CN204243728U (zh) * 2014-12-13 2015-04-01 广发电器集团有限公司 变压器过载保护报警装置
CN104597313A (zh) * 2015-02-06 2015-05-06 王岩 感应装置及电力系统
CN106711936A (zh) * 2017-02-22 2017-05-24 中领世能（天津）科技有限公司 安全报警装置以及供电系统
CN206432692U (zh) * 2017-02-22 2017-08-22 中领世能（天津）科技有限公司 安全报警装置以及供电系统

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