Diagnosing medium voltage GIS circuit breaker by observing trip coil current with simulation and actual tests

被引：10

作者：

Cheng, Chao-Yuan ^{[1
]}

Chen, L. J. ^{[2
]}

Kao, W. S. ^{[3
]}

机构：

[1] St Johns Univ, Dept Elect Engn, Taipei, Taiwan

[2] Taiwan Power Co, Taipei, Taiwan

[3] St Johns Univ, Inst Automat & Mechatron, Taipei, Taiwan

来源：

ELECTRIC POWER COMPONENTS AND SYSTEMS | 2008年 / 36卷 / 02期

关键词：

gas insulated switchgear; circuit breaker; trip mechanism; stroke test; closing time; opening time;

D O I：

10.1080/15325000701549285

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A few metal clad switchgear (MCSG) trip failures were found in the past two decades and the main causes were found related to the characteristics of operation mechanism. Meanwhile, the characteristics of circuit breaker operation mechanism are related to its trip coil current. Mechanical model and electrical model for trip mechanism of circuit breaker of 23-kV GIS are proposed in this article. Trip coil current with different resist force and shaft gap are simulated with MATLAB. One medium voltage GIS trip coil current under different conditions are measured to make a comparison with computer simulation results. Finally, current patterns are proposed as quick reference data for diagnosing operation mechanism failure.

引用

页码：181 / 194

页数：14

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