Method and device for measuring resistive current of line arrester

A line arrester, resistive current technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of high cost of online monitoring system, inaccurate monitoring data, and high system failure rate, and achieve economic benefits and benefits. The effect of stable operation, improved accuracy, and reduced labor intensity

Active Publication Date: 2017-10-20
ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID +1
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  • Application Information

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Problems solved by technology

Therefore, there is currently a method to use the online monitoring device of the line arrester to detect the performance of the line arrester, but there are still many problems in this method, mainly manifested in the high cost of the online monitoring system, unreliable operation, inaccurate monitoring data, high system failure rate, etc.

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  • Method and device for measuring resistive current of line arrester
  • Method and device for measuring resistive current of line arrester
  • Method and device for measuring resistive current of line arrester

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Embodiment Construction

[0023] The specific implementation of the resistive current measuring device of the line arrester of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a line arrester resistive current measurement device, including a clamp current sensor 100 connected to the grounding down conductor of the arrester, a current measurement module 200 connected to the clamp current sensor 100, and a voltage transformer 600 in the substation A voltage measurement module 300 connected to the secondary terminal, a data transfer station 400, and a handheld terminal 500;

[0025] Among them, such as figure 2 with image 3 As shown, the current measurement module 200 may include: a current acquisition unit 210, a first ultra-long-distance wireless synchronization unit 220 connected to the current acquisition unit 210, a first ultra-long-distance wireless transmission unit 220 connected to the current acquisition...

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Abstract

A method and device for measuring the resistive current of a line arrester, which uses a wireless synchronous clock pulse to synchronously collect the current signal of the line arrester and the secondary side voltage signal of the voltage transformer in the substation, and obtains the time-labeled signal by reading the clock value Current data and voltage data, and then send the current data and voltage data to the data transfer station through wireless transmission, the data transfer station automatically forwards the data in real time, after the handheld terminal receives the voltage data and current data sent by the data transfer station, First query and match the current data and voltage data with the same time label, and then determine the resistive current according to the matched current data and voltage data. The invention improves the accuracy of resistive current measurement, and then can accurately judge the performance of the line arrester, and timely maintain and replace the faulty line arrester.

Description

technical field [0001] The invention relates to the technical field of line arresters, in particular to a method and device for measuring the resistive current of a line arrester. Background technique [0002] As a transmission line overvoltage protection device, the line arrester plays a huge role in the reliable operation of the transmission line, and its performance directly affects the safety of the power system. Due to long-term exposure to power frequency voltage, impulse voltage, and internal moisture, the operating line arrester will age the valve plate of the arrester, which may cause breakdown damage and decline in protection characteristics, eventually causing its leakage current to exceed the standard. The increase of the resistive current in the leakage current is the root cause of the thermal collapse of the line arrester. Therefore, in order to ensure the safe and stable operation of the line arrester, it is necessary to conduct regular inspections on the lin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00G01R31/00
Inventor 杨晓勇彭子平王干军王荣鹏吴章洪陈清江陈伟吴毅江邱凌潘涛滕广逸
Owner ZHONGSHAN POWER SUPPLY BUREAU OF GUANGDONG POWER GRID
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