CN106895813A - A kind of transmission line of electricity aerial condutor sag measuring device and its measuring method - Google Patents

Abstract

The invention discloses a device for measuring the sag of an overhead conductor of a transmission line and a measurement method thereof. The device includes at least two sensors suspended on the transmission line to monitor the coordinates of the transmission line and the inclination angle of the conductor in real time, and receives sensor data information to calculate the sag of the transmission line. A vertical handheld device, the sensor is wirelessly connected to the handheld device, and the sensor includes at least two hook parts suspended on the power line, and a support part and a handle that are assembled with the hook parts to stabilize the hook parts part; a base for real-time monitoring of the coordinates of the transmission line and the inclination angle of the conductor is installed at the bottom of the support part. By integrating electronic technology, wireless communication technology, and information technology, it is possible to accurately and instantly digitally monitor arc sag with simple operations. The sag measurement makes the power transmission line safer and more reliable.

Description

Device and method for measuring sag of overhead conductors of transmission lines

〖Technical field〗

The invention belongs to the technical field of electric power measurement, and in particular relates to a device for measuring sag of an overhead conductor of a power transmission line and a measuring method thereof.

〖Background technique〗

The sag of overhead conductors is one of the important parameters in the design and operation and maintenance of transmission lines. The size of sag directly affects the safe and stable operation of transmission lines. If the sag is too small, the mechanical load on the wire itself, fittings, insulators, etc. will increase, and the vibration will intensify, resulting in broken strands or fractures of the wire, and the safety factor will be reduced; Wind swaying, dancing and jumping of overhead lines can easily cause power outage accidents on the line. After the wire is erected, due to the influence of the initial elongation of the wire and the temperature, and the installation of various accessories (anti-vibration hammer, spacer, etc.), it brings uncertainty to the change of the wire sag. However, it may still cause greater safety hazards to the safe operation of the line, especially the sag changes of special gears such as large spans and large sags are crucial to the safe operation of the line. Therefore, the completion acceptance and line The actual sag of the wire must be measured during maintenance.

The traditional methods of measuring sag, such as end angle method, internal angle method and external angle method, are complicated to operate. The binding position of the sag plate changes due to changes in temperature or observers. The selection of the observation position, observation distance, tangency The selection of points needs to rely on the judgment of personnel experience, resulting in the disadvantages of inconvenient, inaccurate, long cycle and complicated operation, and human factors have a great influence on the accuracy of sag.

〖Invention content〗

The invention aims to provide a sag measuring device for overhead conductors of transmission lines with convenient measurement, high precision and simple operation.

The technical solution adopted by the present invention is as follows: a transmission line overhead conductor sag measurement device, including at least two sensors suspended on the transmission line to monitor the coordinates of the transmission line and the inclination angle of the conductor in real time, and receive sensor data information to calculate the transmission line sag The handheld device, the sensor is wirelessly connected with the handheld device, the sensor includes at least two claw parts suspended on the power line, and a support part and a handle part that are assembled with the claw parts to stabilize the claw parts ; A base for real-time monitoring of the coordinates of the transmission line and the inclination angle of the conductor is installed at the bottom of the support portion.

Further, a control module, a power module, a wireless communication module, a GPS module, and an angle sensor are installed in the base; the control module is electrically connected to the power module, the wireless communication module, the GPS module, and the angle sensor respectively. The base is provided with a wireless transmitting port for transmitting signals.

Further, the claw part is composed of a first component, a second component and a third component connected in sequence, and the overall shape is "bow".

Further, a handle installation slot is provided at the junction of the first assembly and the second assembly, and the handle part is connected to the hook part through the handle installation slot; a support installation slot is provided at the end of the third assembly, The support part is connected with the claw part through the support installation groove.

Further, a roller groove is provided in the middle of the first assembly and the second assembly on the side close to the power transmission line, and a rolling shaft capable of rolling along the power transmission line is installed on the roller groove.

Further, a positioning frame for stabilizing the transmission line is installed on the side of the supporting part close to the transmission line, and the positioning frame is triangular in shape.

Further, a main control module, a power supply module, a wireless communication module, a reset module and a data upload module are installed in the handset; the main control module is connected to the power supply module, the wireless communication module, the reset module and the data upload module respectively ; The handset wirelessly communicates with the sensor for leveling through the wireless communication module.

Further, a universal rod for preventing displacement of the sensor on the power transmission line is also installed at the joint of the handle part and the claw part.

The second invention object of the present invention is to provide a transmission line overhead conductor sag measurement method, comprising steps:

1) Suspend the sensor at both ends of the transmission line that needs to measure sag;

2) The handheld is connected to the wireless communication module through the USB interface and sends measurement instructions to the sensor;

3) The sensor measures the coordinates at both ends of the transmission line and the inclination angle of the wire through the GPS module and the angle sensor, and uploads the measurement data to the handset through the wireless communication module;

4) The handset calculates the height difference, gear distance and observation angle at both ends of the transmission line through the main control module through the data given by the sensor. According to the formula Get sag.

5) The handheld device uploads the measurement data through the data upload module.

Further, when the sag changes with the retraction and release of the power transmission wire, the handheld device sends a re-measurement instruction to the sensor through the reset module and the wireless communication module.

By integrating electronic technology, wireless communication technology and information technology, the present invention can accurately and real-time digitally monitor sag with only simple operations, bid farewell to estimation based on experience, and fill the gap in the field of real-time monitoring of electric power, which is extremely convenient The measurement of line sag makes the power transmission line more safe and reliable; the application of the invention can reduce the accident rate by 85%, and the construction and maintenance costs can be reduced by 15%-20%.

〖Description〗

The invention will be illustrated by way of example with reference to the accompanying drawings, in which:

Figure 1 is a schematic diagram of the overall structure of the sensor;

Fig. 2 is a working schematic diagram of the sensor suspended on the transmission line;

Fig. 3 is a structural schematic diagram of the claw part in the sensor;

Fig. 4 is a block diagram of the measuring device.

〖detailed description〗

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

As shown in Figure 1, a transmission line overhead conductor sag measurement device includes two sensors suspended on the transmission line to monitor the coordinates of the transmission line and the inclination angle of the conductor in real time, and a handheld device that receives sensor data information to calculate the sag of the transmission line , the sensor is wirelessly connected to the handset, the sensor includes two claw parts 1 suspended on the power line, and a support part 3 and a handle part 2 assembled with the claw parts to stabilize the claw parts; A base 4 for real-time monitoring of the coordinates of the transmission line and the inclination angle of the conductor is installed at the bottom of the support portion 3 .

Of course, the number of sensors and claw parts 1 can be adjusted according to actual conditions, and can be two, three or four or more.

As shown in Fig. 1 and Fig. 3, in order to facilitate the suspension of the sensor on the power transmission line, the hook part is composed of the first component 1a, the second component 1b and the third component 1c connected in sequence, and the whole is in the shape of a "bow".

In order to enable the two claw parts 1 to hang stably on the transmission line, a handle installation groove 2a is provided at the junction of the first assembly 1a and the second assembly 1b, and the handle part 2 is connected to the handle installation groove 2a through the handle installation groove 2a. The claw part 1 is connected; a support installation groove 3a is provided at the end of the third component 1c, and the support part 3 is connected with the claw part 1 through the support installation groove 3a. At this time, a stable frame structure is formed.

As shown in FIG. 2 and FIG. 3 , in order to locate and stabilize the transmission line 6 , a positioning frame 3 b is installed on the side of the support portion 3 close to the transmission line 6 , and the positioning frame 3 b is triangular in shape. When the sensor is suspended on the power transmission line 6, even if it is in swing under the influence of wind force, the claw part 1 is not easy to escape from the power transmission line 6 due to the positioning and stabilizing effect of the positioning frame 3b.

As shown in FIG. 1 , FIG. 2 , and FIG. 3 , considering that the sag of the transmission line 6 needs to be measured many times and the transmission line 6 is retracted, it can be completed. In the traditional measurement method, after the first measurement, it is necessary to remove the sensor to retract the transmission line (to prevent the sensor from moving with the retraction of the transmission line), and then reinstall the sensor for measurement, and finally make the transmission line reach a safe sag level. This operation step is complicated and takes a lot of time.

Aiming at the problem of complicated operation steps, a roller groove 101 is provided in the middle of the first component 1a and the second component 1b in the claw part 1 near the side of the power transmission line 6, and a roller groove 101 that can be installed along the The rolling axis 102 on which the transmission line 6 rolls.

At the same time, a universal rod 5 to prevent the sensor from shifting in the power transmission line is also installed at the joint between the handle part 2 and the claw part 1 . The sensor is fixed on the tower through the connector at one end of the universal rod. When it is necessary to change the sag of the transmission line to retract the transmission line, the transmission line can be retracted directly. At this time, the sensor is fixed at a certain position in the air through the action of the rotating shaft and the universal rod, and does not generate displacement with the retraction and retraction of the transmission line, which reduces the possibility of operation procedures and multiple operation errors.

As shown in Fig. 1 and Fig. 4, this scheme is through the integration of electronic technology, wireless communication technology and information technology, and a control module, a power supply module, a wireless communication module, a GPS module and an angle sensor are installed in the base 4 of the sensor; The control module is electrically connected with the power supply module, the wireless communication module, the GPS module and the angle sensor respectively, and a wireless transmitting port 4a for transmitting signals is arranged on the base 4 . (The connection relationship of the modules in the figure is not shown)

The power supply module supplies power to each module; the GPS module measures the coordinate information of the sensor; the angle sensor measures the inclination angle of the wire of the transmission line; the control module sends the measured data to the handset through the wireless communication module. (The connection relationship of the modules in the figure is not shown)

A main control module, a power supply module, a wireless communication module, a reset module and a data upload module are installed in the handset; the main control module is connected with the power supply module, the wireless communication module, the reset module and the data upload module respectively; The handheld is connected to the wireless communication module through the USB interface, and then connected to the sensor through wireless communication through the wireless communication module.

The power supply module supplies power to each module, and the main control module receives the data information of the sensor through the wireless module to calculate the sag of the transmission line; the data upload module can send the sensor data and sag to the terminal; the main control module communicates with the wireless module through the reset module. The communication module sends a re-measurement instruction to the sensor. (The connection relationship of the modules in the figure is not shown)

It works as follows:

A method for measuring the sag of an overhead conductor of a transmission line, comprising the steps of:

1) Suspend the sensor at both ends of the transmission line that needs to measure sag;

2) The handheld device sends measurement instructions to the sensor through the wireless communication module;

3) The sensor measures the coordinates at both ends of the transmission line and the inclination angle of the wire through the GPS module and the angle sensor, and uploads the measurement data to the handset through the wireless communication module;

4) The handset calculates the height difference, gear distance and observation angle at both ends of the transmission line through the main control module through the data given by the sensor. According to the formula Get sag.

Among them, f—sag, l—gear distance, h—height difference, θ—measurement angle, a—vertical distance of suspension point, ±—when the near suspension point is lower than the far suspension point, take "+", otherwise take " -".

5) The handheld device uploads the measurement data through the data upload module.

Further, when the sag changes with the retraction and release of the transmission wire, the handheld device sends a re-measurement instruction through the reset module and the sensor of the wireless communication module box.

The above embodiments are only sufficient disclosures and do not limit the present invention. Any replacement of equivalent technical features based on the creative spirit of the present invention and without creative work should be regarded as the disclosure scope of this application.

Claims (10)

1. A transmission line overhead conductor sag measuring device, comprising at least two sensors suspended on the transmission line to monitor the coordinates of the transmission line and the inclination angle of the conductor in real time, and a handheld device that receives sensor data information to calculate the sag of the transmission line, said The sensor is connected with the handset by wireless communication, and it is characterized in that: the sensor includes at least two hook parts suspended on the power line, and a support part and a handle part that are assembled with the hook parts to stabilize the hook parts; A base for real-time monitoring of the coordinates of the transmission line and the inclination angle of the conductor is installed at the bottom of the support portion. 2. transmission line overhead wire sag measuring device as claimed in claim 1, is characterized in that: control module, power supply module, wireless communication module, GPS module and angle sensor are installed in described base; Described control module is respectively It is electrically connected with a power supply module, a wireless communication module, a GPS module and an angle sensor, and a wireless transmitting port for transmitting signals is arranged on the base. 3. The sag measurement device for overhead conductors of transmission lines according to claim 1 or 2, characterized in that: the hook part is composed of the first component, the second component and the third component connected in sequence, and the whole is a "bow" shape. 4. The overhead wire sag measurement device for transmission lines as claimed in claim 3, characterized in that: a handle mounting groove is provided at the intersection of the first assembly and the second assembly, and the handle part is connected to the handle mounting groove through the handle mounting groove. The claw part is connected; a support installation groove is provided at the end of the third component, and the support part is connected with the claw part through the support installation groove. 5. The sag measurement device for overhead conductors of transmission lines as claimed in claim 3, characterized in that: a roller groove is arranged in the middle of the first assembly and the second assembly on the side close to the transmission line, and the rollers A rolling shaft capable of rolling along the transmission line is installed on the groove. 6. The overhead conductor sag measurement device for transmission lines as claimed in claim 1 or 2, characterized in that: a positioning frame for stabilizing the transmission line is installed on the side of the support portion close to the transmission line, and the positioning frame is in the form of triangle. 7. The overhead wire sag measurement device for transmission lines as claimed in claim 1 or 2, wherein a main control module, a power supply module, a wireless communication module, a reset module and a data upload module are installed in the handset; The main control module is respectively connected with the power supply module, the wireless communication module, the reset module and the data upload module; the handset is connected with the sensor through the wireless communication module. 8. The sag measurement device for overhead conductors of transmission lines according to claim 1 or 2, characterized in that: a universal rod for preventing displacement of the sensor on the transmission line is installed at the junction of the handle part and the claw part. 9. The overhead conductor sag measurement method for transmission lines as claimed in claim 1-8, characterized in that it comprises the steps of: 1) Suspend the sensor at both ends of the transmission line that needs to measure sag; 2) The handheld is connected to the wireless communication module through the USB interface and sends measurement instructions to the sensor; 3) The sensor measures the coordinates at both ends of the transmission line and the inclination angle of the wire through the GPS module and the angle sensor, and uploads the measurement data to the handset through the wireless communication module; 4) The handset calculates the height difference, gear distance and observation angle at both ends of the transmission line through the main control module through the data given by the sensor. According to the formula Get sag. Among them, f—sag, l—gear distance, h—height difference, θ—measurement angle, a—vertical distance of suspension point, ±—when the near suspension point is lower than the far suspension point, take "+", otherwise take " -". 5) The handheld device uploads the measurement data through the data upload module. 10. The method for measuring the sag of overhead conductors of transmission lines as claimed in claim 9, characterized in that: when the sag changes with the retraction and release of the transmission conductors, the handheld device sends a reset signal to the sensor through the reset module and the wireless communication module. Measurement instructions.