高压电器2017，Vol.53Issue(10)：246-251,6.DOI:10.13296/j.1001-1609.hva.2017.10.040
一起220kV SF6断路器延迟分闸故障分析
Analysis of a Delay Opening Fault of 220 kV SF6 Circuit Breaker
摘要
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 hydraulic mechanism are calculated and the relationship between the valve seat size and the outlet pressure is analyzed.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.关键词
断路器/分闸延时/响应特性/液压机构解体Key words
circuit breaker/delay opening/response characteristics/hydraulic mechanism disintegration引用本文复制引用
翁新林,秦文红,张小平,黄斌..一起220kV SF6断路器延迟分闸故障分析[J].高压电器,2017,53(10):246-251,6.基金项目
国家电网公司科技项目(52182316000F).Project Srpported by Science and Technology Program of SGCC(52182316000F). （52182316000F）
