摘要
针对故障分量比率差动保护在运行中存在整定不当造成误动的情况 ,分析了该差动保护的整定值与制动系数的关系 ,指出了故障分量差动保护的拐点制动电流不能取得太大。并对故障分量差动保护的整定值选取问题进行了讨论 ,阐述了故障分量差动保护整定值的选取与常规差动保护的不同 。
In the operation of differential protection based on fault component the maloperation of the device may be caused by inappropriate settings. In the view of braking coefficient, it is pointed out that for differential protection based on fault component a higher value of the braking current in the knee point should not be chosen, and how to select the settings of differential protection based on fault component is discussed. It is expounded that the differential protection based on fault component differs from conventional protective devices, the selection of settings for the latter should not indiscriminately imitate the former.
出处
《电网技术》
EI
CSCD
北大核心
2001年第4期47-50,共4页
Power System Technology
关键词
故障分量
差动保护
整定值
继电保护
电力系统
fault component
differential protection
settings of protection devices
