摘要
某区域电网2条110 kV线路突变量距离保护误动作,根据现场波形、模拟试验以及理论分析得出:保护装置原理设计缺陷导致在系统失稳频率异常情况下引起的误动。在此基础上提出了原有保护的整改方案。
This paper studies a variation distance protection misoperation which occurs on two 110 kV transmission lines in a certain regional power grid. According to the equipment waveform, experiments and theoretical analysis it is concluded that some defects of the principle design of the protection device lead to misoperation when system is instable and frequency abnormal. Based on the analysis, the rectification program is proposed for the existing protection device.
出处
《电网与清洁能源》
2013年第3期30-32,38,共4页
Power System and Clean Energy
关键词
110
KV线路
继电保护
线路保护
距离保护
突变量
保护误动
110 kV transmission line
relay protection
line protection
distance protection
mutation
protection misoperation
