摘要
讨论了比率制动差动保护制动系数与制动特性曲线斜率的关系、制动系数与电流互感器误差及流出电流的关系及与灵敏度的关系。指出了启动电流,最小制动电流和制动特性曲线斜率对保护制动特性的影响,提出了在整定和使用该保护时应注意的一些问题。
This paper analyses relations about percentage restraint type longitudinal differential protection restraint coefficient and restrained curve slope, restraint coefficient and error of current transformer, outflow current and sensitivity of the protection. It indicates that pick-up current, start-restraint current and the restrained curve slope affect restraint characteristic of protection, and proposes some problems when setting and using percentage restraint type differential protection.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第21期73-76,共4页
Power System Protection and Control
关键词
比率制动
制动系数
不平衡电流
差动保护
percentage restraint
restraint coefficient
unbalanced current
differential protection
