南方电网500kV3／2断路器主接线的特殊运行方式

SPECIAL OPERATING MODE OF THE 500kV MAIN ELECTRICAL CONNECTION WITH ONE AND A HALF CIRCUIT BREAKER

本文通过介绍南方电网５００ｋｖ３／２断路器主接线特殊运行方式的产生和事故情况，对由此引起的主接线可靠性的降低进行了剖析，并综合提出了在扩建期间影响可靠性的边界条件及改善运行的建议。

In the power system in South China themain electrical connection of one and ahalf circuitbreaker is adopted in 500 kV network. In this paperthe reasons of emerging special operating mode of themain electrical connection and its fault situation arepresented. The reliability depression of main electricalconnection caused by'the special operating mode is an-alyzed. The boundary conditions which affect the reli-ability during the expansion period of the network aregiven, and the proposals for improving the networkoperation are presented too。