摘要
T接线路在110kV电压等级应用越来越广泛。T接线路面临区内故障电流流出、区外故障CT易饱和、三端运行及两端运行方式切换等特殊问题。结合许继公司研制的WXH-813A/T装置介绍了适用于T接线路的三端差动保护的原理及配置方案,并提出了与T接线路相关特殊问题的解决方案。
T connected lines in the 110kV voltage are applied more widely. T connected lines face to the special problems of the current outflow of internal fault, easy TA saturation of outside fault, three-terminal operation and two-terminal operating mode switch, and so on. Combining the WXH-813A / T developed by XJ, this paper introduces the device applied to T-connected three-side with line differential protection principle and configuration, and then proposes the solutions of the T-connected line related to the special problems.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第17期57-59,64,共4页
Power System Protection and Control
关键词
110
KV
T接线路
特殊问题
三端差动保护
解决方案
110 kV
T-connected line
special problem
three-terminal differential protection
solution
