具备快速合解环功能的备自投分析

Analysis and Operations on Automatic Transfer Relay with Function of Quick Close and Open Loop

随着地区电网规模的不断扩大,短路故障电流不断增大,威胁着电网的稳定,电网的分区运行势在必行,而如何确保电网在跨区合环调电时保护不发生误动就成为一个难题。结合110 kV新区变电站采用的具备快速合解环功能的新型备自投装置,对该问题展开了分析,并提出了具体的解决方案和运行操作要求。

With the expanding of regional power grids,power grid＇s stability is threatened by the increasing fault current,which makes it necessary to operate power system in partitions.But it is very difficult to ensure the relay＇s actions correct with the load transferred after the power grid partition operation.Based on the automatic transfer relay with quick closed-open loop function which was used in Xin-qu substation,how to ensure the relay＇s actions correct is discussed in this paper.Finally,some detailed solutions methods and operating requirements are proposed.