Extra-high-voltage overhead line lightning current leakage acquisition and positioning analysis system

Abstract

The invention discloses an extra-high-voltage overhead line lightning current leakage acquisition and positioning analysis system and belongs to the lightning monitoring device technical field. The system comprises a plurality of lightning monitoring devices and a positioning centralized control host; the lightning monitoring devices are located on baseless towers of overhead lines and are used for acquiring current waveforms on grounding leads of the overhead line towers; the current waveforms acquired by each lightning monitoring devices are transmitted to the remote positioning centralized control host through the relaying of the other lightning monitoring devices so as to be processed by the positioning centralized control host; and the positioning centralized control host acquires the current waveforms transmitted by the lightning monitoring devices in real time and adopts the current waveforms as lightning strike and fault type judgment standards, and positions a tower struck by lightning through comparing the signals acquired by the lightning monitoring devices. The extra-high-voltage overhead line lightning current leakage acquisition and positioning analysis system has high lightning struck line positioning accuracy. With the extra-high-voltage overhead line lightning current leakage acquisition and positioning analysis system adopted, the accuracy and timeliness of the detection of lightning strike accidents can be improved, lightning strike fault types can be effectively distinguished, lightning protection measures can be improved in a targeted manner, and lightning strike tripping faults can be decreased.

Description

technical field [0001] The invention relates to the technical field of lightning monitoring devices, in particular to a lightning leakage collection and positioning analysis system for ultra-high voltage overhead lines. Background technique [0002] With the development of the national economy and the continuous growth of power demand, the problem of safe operation of power production is becoming more and more prominent. For transmission lines, lightning tripping has always been an important factor affecting the reliability of power supply of high-voltage transmission lines. Due to the randomness and complexity of atmospheric lightning activities, there are currently no effective lightning protection measures for transmission line lightning damage in the world except lightning protection. The existing technology has the following disadvantages: the lightning strike that did not cause the trip accident cannot be found, so that the damage to the wire cannot be detected in tim...

AI Technical Summary

Problems solved by technology

Due to the randomness and complexity of atmospheric lightning activities, there are currently no effective lightning protection measures for transmission line lightning damage in the world except lightning protection.

The existing technology has the following disadvantages: the lightning strike that did not cause the trip accident cannot be found, so that the damage to the wire cannot be detected in time to cause serious accidents in the future; the error of the traditional lightning positioning system is relatively large, and the distance measurement and positioning error after the lightning strike trip is relatively large, and personnel cannot eliminate it in time Hidden danger;

[0003] Impaired communication between stations due to damaged optical cables after a major accident

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