特高压换流站投旁通对的策略及改进  

Discussion on Application Schemes of UHVDC Converter Station Bypass Pair

作　　者：吕茵[1] 张文[1] 劳颖然[1] 何园峰[1] 莫文斌[1] 

机构地区：[1]中国南方电网超高压输电公司广州局,广州510405

出　　处：《高压电器》2015年第3期76-81,共6页High Voltage Apparatus

摘　　要：在特高压输电工程(UHVDC)紧急停运(ESOF)或者闭锁(BLOCK)的过程中,换流站需根据不同的控制策略,投入旁通对以及闭合旁路开关。这对快速隔离故障或者保障其他阀组正常运行起着重要的作用。而错误地投入旁通对将对直流系统的紧急停运或闭锁产生不良影响。笔者就极闭锁时是否投入旁通对进行了对比,对不同策略下的实际波形进行了分析,说明在极闭锁时不投入旁通对更有利于直流系统的稳定运行。During UHVDC ESOF or BLOCK process, it is necessary for converter stations to apply bypass pair and to close bypass switches according to different control strategies, which is utmost important for isolating faults and keeping normal operation of other valve groups. However, mistaken application of the bypass pair will result in harmful effect on the ESOF or BLOCK process. In this paper, two situations（with and without application of bypass pair during BLOCK process） are discussed, and the actual waveforms of the two situations are analyzed. The result indicates that it is favorable to safe operation of UHVDC system in BLOCK process without application of bypass pair.

关 键 词：特高压直流输电 投旁通对 紧急停运 换流阀 

分 类 号：TM721.1[电气工程—电力系统及自动化]