摘要
对电流互感器(current transformer,CT)二次侧开路产生很高的感应电压、引起发电机负序电流保护装置和纵差保护装置误动作的危害进行了具体分析,并介绍几种实现CT二次断线保护的方法及解决CT二次侧开路问题的最佳方法。
The hazards of open secondary circuit of current transformer （CT） are analyzed in detail, which include high induced voltage along with maloperation of generator negative-sequence current protection and longitudinal differential protection. Several protection methods against broken secondary circuit of CT are introduced with the best solution to open secondary circuit of CT proposed.
出处
《广东电力》
2009年第7期54-57,共4页
Guangdong Electric Power
关键词
电流互感器
负序电流
纵差保护
非线性电阻
current transformer （CT）
negative-sequence current
longitudinal differential protection
nonlinear resistance
