A Lightning Strike Location Method for Transmission Lines

A transmission line and positioning method technology, applied in the direction of fault location, etc., can solve problems affecting insulator strength and insulation characteristics, line damage, etc., to save search and line repair time, reduce positioning errors, and ensure effectiveness and reliability Effect

Active Publication Date: 2015-12-09
TSINGHUA UNIV +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When lightning strikes a tower or transmission line, a lightning current with a large amplitude will pass through the line where the lightning strike point is located, which may cause damage to the line
At the same time, flashover may occur

Method used

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  • A Lightning Strike Location Method for Transmission Lines
  • A Lightning Strike Location Method for Transmission Lines
  • A Lightning Strike Location Method for Transmission Lines

Examples

Experimental program
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Example Embodiment

[0028] The transmission line lightning strike location method proposed by the present invention comprises the following steps:

[0029] (1) Obtain the position P of the tower where the lightning current online monitoring system is installed from the lightning current online monitoring system 1 , lightning strike time t 1 , and the lightning current that hits the tower is shunted by the tower and the transmission line and passes through the lightning current characteristic parameters of the lightning current sensor in the online monitoring system. The lightning current characteristic parameters include the current amplitude I of the lightning current 1 , lightning current waveform, rise time t up1 and the half-wave time t h1 , and from the lightning current waveform, get the number of peaks N 1 ;

[0030] (2) Obtain the monitoring data from the lightning location system, the monitoring data includes the lightning strike time t in the same area at the same time 2 , Lightnin...

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Abstract

The invention relates to a lightning strike positioning method of a power transmission line and belongs to the technical field of high-voltage experimenting equipment and measuring. The method includes by inquiring data monitored by an online lightning current monitoring system, acquiring current amplitude, current waveform, rising time and half-wave time of lightning current, striking a pole tower, which goes through a lightning current sensor of the monitoring system after the lightning current is shunted through the pole tower and the power transmission line; by inquiring data monitored by a lightning positioning system, acquiring lightning strike time, lightning strike area, lightning current amplitude and lightning return strike time data at same time and in a same area; combining an attenuation relationship of lightning waveform, acquired by simulating calculation, after going through the pole tower and a current shunt relationship between a lightning strike point and different positions of the pole tower and taking error of the lightning positioning system into consideration to acquire position range of the lightning strike point. The lightning strike positioning method is high in positioning accuracy and beneficial to quick finding and repairing of line lightning strike loss, effectiveness and reliability of data are guaranteed, lightning strike fault finding and repairing time of the power transmission line is saved.

Description

technical field [0001] The invention relates to a lightning strike positioning method for a power transmission line, belonging to the technical field of high-voltage test equipment and measurement. Background technique [0002] According to incomplete statistics, 3000-4000 casualties are caused by lightning strikes in my country every year, and property losses reach an astonishing 20 billion yuan. Lightning disasters have become one of the most destructive meteorological disasters. The electromagnetic transient phenomenon caused by lightning belongs to the scope of electromagnetic pollution, and electromagnetic pollution is recognized as the fourth largest pollution in the world after water pollution, air pollution and noise pollution. With the modernization of industrial and agricultural production and people's lives, the requirements for the reliability and service quality of service systems and facilities such as railways, aviation, finance, electricity, telecommunication...

Claims

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Application Information

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IPC IPC(8): G01R31/08
Inventor 余占清王运超王泽众彭珑李雨赵媛陈水明何金良曾嵘端木林楠牛晓民王萍
Owner TSINGHUA UNIV
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