Analysis of a Delay Opening Fault of 220 kV SF<sub>6</sub> Circuit Breaker

WENG Xinlin; QIN Wenhong; ZHANG Xiaoping; HUANG Bin

doi:10.13296/j.1001-1609.hva.2017.10.040

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Analysis of a Delay Opening Fault of 220 kV SF₆ Circuit Breaker

更新时间：2025-04-26

- Analysis of a Delay Opening Fault of 220 kV SF₆ Circuit Breaker
- High VoltageApparatus Vol. 53, Issue 10, Pages: 246-251(2017)
- 作者机构：
  
  国网江西省电力公司检修分公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.10.040
  CLC： TM561.3
- Published：2017
- 稿件说明：
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[1]翁新林,秦文红,张小平,黄斌.一起220 kV SF_6断路器延迟分闸故障分析[J].高压电器,2017,53(10):246-251.

WENG Xinlin, QIN Wenhong, ZHANG Xiaoping, et al. Analysis of a Delay Opening Fault of 220 kV SF₆ Circuit Breaker[J]. High voltageapparatus, 2017, 53(10): 246-251.
[1]翁新林,秦文红,张小平,黄斌.一起220 kV SF_6断路器延迟分闸故障分析[J].高压电器,2017,53(10):246-251. DOI： 10.13296/j.1001-1609.hva.2017.10.040.

WENG Xinlin, QIN Wenhong, ZHANG Xiaoping, et al. Analysis of a Delay Opening Fault of 220 kV SF₆ Circuit Breaker[J]. High voltageapparatus, 2017, 53(10): 246-251. DOI： 10.13296/j.1001-1609.hva.2017.10.040.

摘要

针对220 kVJA变发生一起220 kV断路器跳闸延时的故障现象

笔者根据保护动作、现场检查和试验情况

初步判断故障原因液压机构动作延时。据此文中利用AMEsim仿真软件搭建断路器液压机构动作特性模型

得出液压机构分闸时各级控制阀响应特性

分析了断路器分闸动作时二级阀阀座与阀管尺寸匹配对出口动作压力的影响。根据断路器液压机构各级阀体解体检查状况

确定该故障起因为断路器液压机构管阀制造工艺存在缺陷。针对该故障

提出对该断路器同型号、同批次阀体进行全部更换并为该型号运行年限较长断路器实施B类检修

防止类似故障再次发生。

Abstract

Aiming to an accident of 220 kV circuit breaker in a substation

this paper analyzes the possible causes based on the action of relay protection equipment

on-site inspection test

preliminary judgment of the cause of the fault is hydraulic mechanism action delay.The operating characteristic model of the hydraulic mechanism of circuit breaker is built by using AMEsim software.The response characteristics of the control valve at the opening of the hy draulic mechanism are calculated and the relationship between the valve seat size and the outlet pressure is ana lyzed.According to the disassembly inspection status of the valve body of the hydraulic mechanism

it is presumed that the cause of the delay accident is defect in the manufacturing process of the hydraulic valve.The fault interrupter same model

same batch valve technology is replaced two-stage valve.

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Analysis of a Delay Opening Fault of 220 kV SF6 Circuit Breaker

DOI：10.13296/j.1001-1609.hva.2017.10.040

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Abstract

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Analysis of a Delay Opening Fault of 220 kV SF₆ Circuit Breaker