特高压直流系统投旁通对与合旁路开关配合策略研究

在传统直流输电工程中，投旁通对有着将直流侧短路、交流侧开路的作用。针对特高压直流输电工程双12脉动阀组串联的结构，必须考虑到在停运一个阀组时，如何降低对另一阀组的影响。本文利用现场试验数据，深入研究了同极单阀组闭锁和紧急停运两种情况下，两侧换流站如何实现投旁通对和合旁路开关的配合，以及停运阀组和运行阀组的配合，分析这些配合策略是否满足系统安全稳定运行的需要。

The Coordinationbetween Initiating Bypass Pairs and Closing Bypass Breaker in ±800 kV Transmission Project

The initiating bypass pairs can help to isolate fault by bypassing DC side and blocking the AC side.The UHVDC transmission project inherits the traditional use of the method.What’s more, we must keep the other group working when group protection initiates only one group ESOF.Two aspects are analyzed with controlling logics and testing data of the transmission project,including execution bypass pairs, tendency of currency as well as voltage.We will see how initiating bypass pairs and opening bypass breaker coordinate,and the fault group and the other group coordinate. Then research if the coordinating methods can keep the UHVDV system safe and stable.