Transmission line lightning stroke on-line monitoring system

Abstract

This invention discloses a kind of transmit electricity circuit lightning strike online monitor system, it includes the current sensor, the lighting strike signal collection cell, the Russell loop, the accumulator links with the solar battery, the pressure converter separately, the pressure converter links with the lighting strike signal collection cell, data receive and GPRS transmission cell separately, the lighting strike signal collection cell links with the current sensor, data receive and GPRS transmission cell separately, the lighting strike signal collection cell A / D sends the gained thunderstorm current data to the data receive and GPRS transmission cell through the RS232 interface after collecting, the data receive and GPRS transmission cell sends the data gained by each thunderstorm current sensor to the internet by handset network, then to the FTP server, links with the user terminal by the server use network line. The structure of this invention is simple, the operation is automatic, the measurement is stable, the data is correct.

Description

technical field [0001] The invention relates to the field of lightning protection for electrical equipment in a power system, in particular to an online lightning strike monitoring system for an overhead power transmission line. It is suitable for judging the form of lightning strikes on overhead transmission lines and measuring lightning current parameters and waveforms. Background technique [0002] So far, the relevant research achievements at home and abroad mainly include the following types. [0003] 1 Magnetic steel rod method [0004] The earliest foreign instrument successfully developed for measuring the maximum magnitude of lightning current was made by Komel-Kov and Stekoinikov in 1941 with a loop antenna and a magnetic steel rod, and it is still used in power systems. Its main disadvantages are: the formula and production process of the magnetic steel rod are dispersed, and the exact relationship between the residual magnetism on the magnetic steel rod and the...

AI Technical Summary

Problems solved by technology

Its main disadvantages are: the formula and production process of the magnetic steel rod are dispersed, and the exact relationship between the residual magnetism on the magnetic steel rod and the measured lightning current cannot be determined uniformly; the residual magnetism of the magnetic steel rod with recorded lightning current information is easy to be transported The process is changed due to vibration, resulting in the loss of "information"; the magnetic steel rod cannot measure the lightning current below several thousand amps, and sometimes it will be saturated due to the strong lightning current; the magnetic field of the measurement environment also affects the measurement accuracy, and the error analysis shows that the largest The error can reach more than 100%

[0007] (1) The equipment is complicated and the initial investment is large;

[0008] (2) The positioning system itself has certain errors and detection dead zones;

[0009] (3) Terrain factors have great interference to the detection station, and the error is large;

[0010] (4) Cannot accurately locate the tower struck by lightning;

[0011] (5) There is an error in the calculation of the lightning current amplitude by the positioning system, which cannot be actually checked at present;

[0012] (6) The lightning current waveform cannot be given

No online lightning strike monitoring system or device for transmission lines has been disclosed or used after searching

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