摘要
通过一例对许昌继电器厂PMH-114型中阻抗母线差动保护的故障排除,分析该装置母联切换回路的动作原理,提出正确的故障查找、分析方法。同时也警醒继电保护人员,对中阻抗母差保护校验应特别注意,以避免类似故障。
This article by clearing the break-down of the relay,analyses the acting principle of the Subsection breaker of the PMH-114 middle impedance bus current differential relay made in Xu-chang Relay Factory and also suggests reasonable break-down searching and analysing methods.Meanwhile,the relay protection personnel are warned to pay more attention to protect and examine the middle impedance bus current differential relayat times to avoid the like trouble.
作者
黄雪昀
HUANG Xue—yun(Chongqing Nan’Power Supply Bureau,Chongqing 400060)
出处
《重庆电力高等专科学校学报》
2004年第4期12-15,共4页
Journal of Chongqing Electric Power College
关键词
母差
中阻抗
PMH-114
绝缘
击穿
bus current differential relay
middle impedance
PMH-114
insulating
punctures
