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Method and device for detecting overvoltage of circuit breaker under multiple lightning strokes

A detection method and circuit breaker technology, which is applied in the direction of instruments, electrical digital data processing, special data processing applications, etc., can solve the problem of difficult and inaccurate simulation results of circuit breaker overvoltage, and avoid inaccurate simulation results of overvoltage , the effect of accurate simulation results

Pending Publication Date: 2021-01-29
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a method for detecting the overvoltage of a circuit breaker under multiple lightning strikes, which solves the problem that the overvoltage of a circuit breaker under multiple lightning strikes is difficult to simulate and the simulation results are inaccurate

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  • Method and device for detecting overvoltage of circuit breaker under multiple lightning strokes
  • Method and device for detecting overvoltage of circuit breaker under multiple lightning strokes
  • Method and device for detecting overvoltage of circuit breaker under multiple lightning strokes

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Embodiment Construction

[0051]The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0052]Seefigure 1 , Is a flowchart of a method for detecting overvoltage of a circuit breaker under multiple lightning strikes according to Embodiment 1 of the present invention.

[0053]An embodiment of the present invention provides a method for detecting overvoltage of a circuit breaker under multiple lightning strikes, including steps S1-S3:

[0054]S1. Collect station equipment data; wherein, the station equipment data includes lines, towers, in...

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Abstract

The invention discloses a method and device for detecting overvoltage of a circuit breaker under multiple lightning strokes, and the method comprises the steps of collecting the data of equipment in astation, building a lightning invasion wave simulation model of a line-transformer substation in an electromagnetic transient program according to the data of the equipment in the station, the circuit breaker being simulated through a Cassie arc model; and acquiring lightning overvoltage of the circuit breaker in real time by adopting a multiple lightning counterattack tower and a shielding failure wire in the simulation model. According to the invention, the problems that the overvoltage of the circuit breaker under multiple lightning strokes is difficult to simulate and the simulation result is inaccurate are solved.

Description

Technical field[0001]The invention relates to the field of lightning protection for power system transformation equipment, and in particular to a method for detecting circuit breaker overvoltage under multiple lightning strikes of the circuit breaker.Background technique[0002]In recent years, lightning activities have been frequent in the five provinces of the Southern Power Grid, and the failure rate of power transmission and transformation equipment caused by lightning strikes is relatively high. In particular, lightning intrusive waves often cause breakout explosions of circuit breakers in open substations, which seriously threaten the power grid. Safe and stable operation. Studies at home and abroad have shown that more than 30% of natural lightning strikes are multiple mines. Multiple mines refer to the presence of multiple charge centers in the thundercloud that discharges to the ground. After the first charge center occurs, the subsequent charge centers continue. Discharge al...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F113/04
CPCG06F30/20G06F2113/04Y02E60/00
Inventor 冯瑞发廖民传刘刚马御棠胡上茂钱国超贾磊蔡汉生屈路祁汭晗张义胡泰山刘浩梅琪施健
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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