断路器本体三相不一致保护回路性能优化提升措施  

Measures of Performance Optimization and Improvement of Three-Phase Inconsistent Protection for Circuit Breaker

作　　者：郭杨 陈昊 高世宇 顾浩 李义峰 GUO Yang;CHEN Hao;GAO Shiyu;GU Hao;LI Yifeng(State Grid Jiangsu Electric Power Company Limited EHV Branch Company,Nanjing 211102,China;State Grid Jiangsu Electric Power Company Limited Nanjing Power Supply Branch company,Nanjing 210019,China)

机构地区：[1]国网江苏省电力有限公司超高压分公司,江苏南京211102 [2]国网江苏省电力有限公司南京供电分公司,江苏南京210019

出　　处：《湖南电力》2022年第5期90-94,共5页Hunan Electric Power

摘　　要：针对高压电网屡次发生断路器本体三相不一致保护动作不可靠的情况,以典型二次回路为基础,介绍三相不一致保护的原理,从回路绝缘故障、人为因素、压板设置不当等多方面分析保护误动作的原因,提出了优化改进措施。应用实践表明,该措施可行有效,显著提升了三相不一致保护性能。Based on the typical secondary circuit,this paper introduces the principle of three-phase inconsistent protection in high-voltage power system,analyzes the causes of protection maloperation from the aspects of circuit insulation fault,artificial factors,improper setting of pressure plate and so on,and puts forword the optimization and improvement measures.The application practice shows that the optimized measures are feasible and effective,and the performance of three-phase inconsistent protection is greatly improved.

关 键 词：断路器 三相不一致保护 优化改进措施 特高压变电站 

分 类 号：TM561[电气工程—电器]