Insulator distribution voltage measurement method, device, medium and system

Abstract

The invention belongs to the technical field of power transmission line operation and maintenance, and particularly relates to an insulator distributed voltage measurement method, which is characterized in that an unmanned aerial vehicle carries a voltage measurement module to complete insulator distributed voltage measurement, and the voltage measurement module makes contact with metals at two ends of an insulator umbrella skirt through a probe to enable an electroluminescent device to emit light. Through optical fiber conduction, photoelectric signal conversion and signal conditioning, voltages at the two ends of the actually measured insulator are obtained and serve as a basis for judging the health state of the insulator string. According to the method, tower climbing operation is not needed, operation is simple, efficient and safe, obtained data can be transmitted to a ground station to be stored, traceability is achieved, and the method is suitable for being used and popularized in power transmission line field operation and maintenance projects. Based on the same inventive concept, the invention also provides an insulator distributed voltage measuring device, a non-transient readable recording medium storing a program of the method and a system comprising the medium, and the program can be called through a processing circuit to execute the method.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission line operation and maintenance, and discloses an insulator distributed voltage measurement method, device, system and a recording medium storing a program capable of executing the method. Background Art

[0002] Insulators are an extremely important power equipment for transmission lines. They are an insulator that connects transmission towers and transmission wires, and have strong mechanical properties and good insulation properties. Transmission line insulators work in the field and are affected by extreme weather such as rain and lightning for a long time, which causes their insulation performance to deteriorate and is prone to zero value. The existence of zero value insulators poses a great threat to the stable operation of the power system. Therefore, preventive detection of insulators is an important guarantee for the safe operation of transmission lines.

[0003] At present, insulator detection mainly uses manual detection of insulator resistance to find zero-value insulators. With the continuous development of my country's power system, the voltage level is getting higher and higher, and the length of the insulator string is getting longer and longer. The manual detection method mainly relies on the operation and maintenance personnel to take the tower to carry out insulator detection. The detection process is time-consuming and there is a risk of falling from a high altitude. The detection process often causes power outages in the power supply line, which affects the reliability and stability of the power grid operation. If a robot is used to climb the tower, the robot needs to be equipped with a tower climbing mechanism to complete more complex movements and avoid various obstacles on the top of the tower. Therefore, the robot and the detection device it carries must be small. How to develop a set of measurement devices that can complete the health status of insulators at a preset position according to the instructions of the operation and maintenance personnel is an urgent problem that technicians need to solve. Summary of the invention

[0004] By analyzing the equivalent capacitance circuit of each insulator arranged between the crossarm, insulator string and transmission line, it is found that the distribution of voltages across each insulator in an insulator string in a healthy state conforms to the standard voltage distribution curve of the insulator of the corresponding model, so that the standard voltage across each insulator can be obtained. By measuring the voltage across each insulator one by one and comparing it with the standard voltage, it can be known whether the corresponding insulator is in a healthy state. According to the above principle, the present invention provides an insulator distributed voltage measurement device to solve the problem raised in the background technology, including: an unmanned aerial vehicle, an insulator distributed voltage passive measurement module, and a ground control terminal; an obstacle avoidance warning module is fixed above the unmanned aerial vehicle, and a shock absorbing mechanism is fixed below the unmanned aerial vehicle, and the insulator distributed voltage passive measurement module is fixed on the shock absorbing mechanism and is communicatively connected with the ground control terminal; wherein the insulator distributed voltage passive measurement module includes: a voltage passive sensing module and a signal processing module that are communicatively connected, and the voltage passive sensing module includes: two groups of measurement probes, a high-voltage protection unit, an electroluminescent device, a light-conducting sealed unit, and an optical fiber, wherein the high-voltage protection unit is connected in series with the electroluminescent device, and a group of measurement probes are electrically connected at both ends; the light-conducting sealed unit with a built-in optical fiber is fixedly connected to the shock absorbing mechanism, the input end of the optical fiber is connected to the light-emitting part of the electroluminescent device, and the output end of the optical fiber is communicatively connected to the signal processing module.

[0005] Preferably, the signal processing module includes: a photoelectric conversion module, a signal conditioning and sampling module, and an airborne wireless transmission module which are communicatively connected in sequence, and the output end of the optical fiber is communicatively connected to the photoelectric conversion module.

[0006] Preferably, the ground control terminal includes a display unit, a controller, and a ground wireless transmission module that are communicatively connected to each other. The ground wireless transmission module can receive data transmitted by the airborne wireless transmission module and establish a communication connection with the flight control unit of the UAV, so as to transmit the first-person perspective image of the UAV flight back to the display unit and issue flight instructions.

[0007] Based on the same inventive concept, the present application also provides a method for measuring distributed voltage of an insulator, using the above-mentioned distributed voltage measuring device of an insulator, comprising the following steps:

[0008] S1. Make the drone with the passive measurement module for the insulator distributed voltage fly to the vicinity of the insulator shed of the transmission line to be tested, and the two sets of measuring probes contact the steel cap of the insulator to be tested and the steel cap of an adjacent insulator at the same time;

[0009] S2. The ground control terminal starts the distributed voltage collection trigger command, and the light signal emitted by the electroluminescent device is transmitted to the information processing module through the optical fiber. The information processing module converts the light signal into the voltage value at both ends of the insulator to be tested and transmits it to the ground control terminal;

[0010] S3. Obtain the voltage values ​​at both ends of each insulator in the insulator string in turn to complete the measurement of the insulator distributed voltage.

[0011] Preferably, the above method also includes the following steps: transmitting the first-person perspective image of the UAV flight to the ground control terminal in real time, issuing a command when the electroluminescent device is seen to emit light, starting the UAV to drive the probe away from the current insulator and controlling the UAV to approach the adjacent insulator for the next round of voltage measurement.

[0012] Another embodiment of the present invention is to provide a non-transitory readable recording medium for storing one or more programs including a plurality of instructions. When the instructions are executed, a processor will be caused to execute the above-mentioned insulator distributed voltage measurement method.

[0013] The present invention also provides an insulator distributed voltage measurement system, including a processing circuit and a memory electrically coupled thereto, characterized in that the memory is configured to store at least one program, the program includes multiple instructions, and the processing circuit runs the program to execute the above-mentioned insulator distributed voltage measurement method.

[0014] Compared with the prior art, the insulator distributed voltage measuring device provided by the present invention does not need to carry a power source, is light and convenient, does not add excessive load to the drone, makes it easy for the drone to maintain balance, and reduces the difficulty of drone control. The operator only needs to control the drone to the vicinity of the insulator and contact the measuring probe with the insulator steel cap to complete the insulator distributed voltage measurement and obtain the health status of the insulator. There is no need to climb the tower for operation, and the operation is simple, efficient and safe. During each operation, the operation process data and result data will be transmitted to the ground control terminal in real time, and the operation data will be stored for a long time, providing a convenient solution for operators to evaluate, manage, and query and analyze the operating status of transmission line insulators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the insulator distributed voltage measuring device in an embodiment of the present invention;

[0016] Figure 2 Schematic diagram of the working state of the drone in the embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the appearance of an insulator distributed voltage passive measurement module in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal wiring of the insulator distributed voltage passive measurement module in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the communication connection of the ground control terminal in the working state according to the embodiment of the present invention;

[0020] In the figure, 1. UAV; 2. Insulator distributed voltage passive measurement module; 3. Ground control terminal; 11. Obstacle avoidance warning module; 12. Shock absorption mechanism; 20. Voltage passive sensing module; 21. Signal processing module; 22. Measuring probe; 23. High-voltage protection unit; 24. Electroluminescent device; 25. Light transmission sealed unit; 26. Optical fiber; 27. Photoelectric conversion module; 28. Signal conditioning and sampling module; 29. ​​Airborne wireless transmission module; 31. Display unit; 32. Ground wireless transmission module; 33. Flight control unit. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making innovative efforts are within the scope of protection of the present invention.

[0022] The following technical solutions and attached Figure 1-5 , specifically describing the implementation process of the present invention, including an insulator distributed voltage measuring device and a method for measuring the insulator distributed voltage using the device.

[0023] An insulator distributed voltage passive measurement device comprises: a drone 1 with a damping mechanism 12 fixed below, an insulator distributed voltage passive measurement module 2, and a ground control terminal 3, wherein the insulator distributed voltage passive measurement module 2 is fixed on the damping mechanism 12, connected to the drone 1, including but not limited to electrical connection and optical fiber connection, and connected to the ground control terminal 3 via radio frequency communication. The drone 1 is a multi-rotor drone, the obstacle avoidance warning module 11 is fixedly installed on the top of the drone 1, and the damping mechanism 12 is fixedly installed below the drone.

[0024] The insulator distributed voltage passive measurement module 2 includes: a voltage passive sensing module 20 and a signal processing module 21. The voltage passive sensing module 20 includes two groups of measuring probes 22, a high-voltage protection unit 23, an electroluminescent device 24, and a light-conducting sealed unit 25 with a built-in optical fiber 26. The high-voltage protection unit 23 is connected in series with the electroluminescent device 24, and both ends are electrically connected to a group of measuring probes 22; the light-conducting sealed unit 25 is fixedly connected to the shock absorbing mechanism 12, the input end of the optical fiber 26 is connected to the light-emitting part of the electroluminescent device 24, and the output end of the optical fiber 26 is communicatively connected to the signal processing module 21.

[0025] The signal processing module 21 includes: an optoelectronic conversion module 27, a signal conditioning and sampling module 28, and an airborne wireless transmission module 29. The optoelectronic conversion module 27 is connected to the signal conditioning and sampling module 28 for communication; the signal conditioning and sampling module 28 is connected to the airborne wireless transmission module 29 for communication. The output end of the optical fiber 26 is connected to the optoelectronic conversion module 27.

[0026] The ground control terminal 3 includes a controller and display unit 31, and a ground wireless transmission module 32. The ground control terminal 3 is connected to the flight control unit 33 by wired or wireless means, and the first-person perspective image of the UAV flight is displayed on the display unit 31; the ground control terminal 3 is communicated with the airborne wireless transmission module 29 through the ground wireless transmission module 32.

[0027] The specific method of using the above device to measure the insulator distributed voltage and detect the health status is as follows:

[0028] The drone 1 with the passive insulator distributed voltage measurement module 2 is flown to the vicinity of the insulator shed of the transmission line to be tested, and two groups of measuring probes 22 are respectively in contact with the steel cap of the insulator to be tested and the steel cap of an adjacent insulator at the same time;

[0029] The ground control terminal 3 starts the distributed voltage collection trigger command, and the optical signal emitted by the electroluminescent device 24 is transmitted to the information processing module 21 through the optical fiber 26. The information processing module 21 converts the optical signal into the voltage value at both ends of the insulator to be tested and transmits it to the ground control terminal 3;

[0030] The first-person perspective image of the UAV 1 is transmitted back to the ground control terminal 3 in real time. When the electroluminescent device 24 is seen to emit light, a command is issued through the controller to start the UAV 1 to drive the probe away from the current insulator and control the UAV to approach the adjacent insulator for the next round of voltage measurement; the voltage values ​​at both ends of each insulator in the insulator string are obtained in turn to complete the measurement of the distributed voltage of the insulator.

[0031] By comparing the voltage across each insulator with the distributed voltage spectrum of the insulator of that model, it can be determined whether the corresponding insulator is in a healthy state.

[0032] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computers, available storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0033] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0034] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0035] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0036] Compiling the above method steps into a program and then storing it on a hard disk or other non-transitory storage medium constitutes an embodiment of "a non-transitory readable recording medium" of the present invention; and electrically connecting the storage medium to a computer processor and completing the measurement of the insulator distributed voltage through data processing constitutes an embodiment of "an insulator distributed voltage measurement system" of the present invention.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An insulator distributed voltage measuring device, comprising: An unmanned aerial vehicle, an insulator distributed voltage passive measurement module, and a ground control terminal; an obstacle avoidance warning module is fixed on the upper part of the unmanned aerial vehicle, and a shock absorbing mechanism is fixed on the lower part thereof, wherein the insulator distributed voltage passive measurement module is fixed on the shock absorbing mechanism and is communicatively connected to the ground control terminal; wherein the insulator distributed voltage passive measurement module comprises: a voltage passive sensing module and a signal processing module which are communicatively connected, wherein the voltage passive sensing module comprises: two groups of measuring probes, a high-voltage protection unit, an electroluminescent device, a light-conducting sealed unit, and an optical fiber, wherein the high-voltage protection unit is connected in series with the electroluminescent device, and each of the two ends is electrically connected to a group of measuring probes; the light-conducting sealed unit with a built-in optical fiber is fixedly connected to the shock absorbing mechanism, the input end of the optical fiber is connected to the light-emitting part of the electroluminescent device, and the output end of the optical fiber is communicatively connected to the signal processing module.

2. The insulator distributed voltage measuring device according to claim 1, characterized in that: The signal processing module comprises: a photoelectric conversion module, a signal conditioning and sampling module, and an airborne wireless transmission module which are communicatively connected in sequence, and the output end of the optical fiber is communicatively connected to the photoelectric conversion module.

3. The insulator distributed voltage measuring device according to claim 2, characterized in that: The ground control terminal includes a display unit, a controller, and a ground wireless transmission module that are communicatively connected to each other. The ground wireless transmission module can receive data transmitted by the airborne wireless transmission module and establish a communication connection with the flight control unit of the UAV, which is used to transmit the first-person perspective image of the UAV flight back to the display unit and issue flight commands.

4. A method for measuring distributed voltage of an insulator, using an insulator distributed voltage measuring device according to any one of claims 1 to 3, to complete the following steps: S1. Make the drone with the passive measurement module for the insulator distributed voltage fly to the vicinity of the insulator shed of the transmission line to be tested, and the two sets of measuring probes contact the steel cap of the insulator to be tested and the steel cap of an adjacent insulator at the same time; S2. The ground control terminal starts the distributed voltage collection trigger command, and the light signal emitted by the electroluminescent device is transmitted to the information processing module through the optical fiber. The information processing module converts the light signal into the voltage value at both ends of the insulator to be tested and transmits it to the ground control terminal; S3. Obtain the voltage values ​​at both ends of each insulator in the insulator string in turn to complete the measurement of the insulator distributed voltage.

5. The method for measuring distributed voltage of an insulator according to claim 4, characterized in that: The method also includes the following steps: transmitting the first-person perspective image of the drone flight to the ground control terminal in real time, issuing a command when the electroluminescent device is seen to emit light, starting the drone to drive the probe away from the current insulator and controlling the drone to approach the adjacent insulator for the next round of voltage measurement.

6. A non-transitory readable recording medium for storing one or more programs including a plurality of instructions, characterized in that: When the instruction is executed, the processor will be caused to execute the insulator distributed voltage measurement method described in any one of claims 4-5.

7. An insulator distributed voltage measurement system, characterized in that It comprises a processing circuit and a memory electrically coupled thereto, characterized in that the memory is configured to store at least one program, the program comprises a plurality of instructions, and the processing circuit runs the program to execute an insulator distributed voltage measurement method as described in any one of claims 4-5.

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