一起500kV交流母线送电失败故障原因分析及处理  

Cause Analysis and Treatment of a 500 kV AC Busbar Energizing Failure

作　　者：李应宏[1] 王贵山[1] LI Yinghong;WANG Guishan(Liuzhou Bureau,CSG EHV Power Transmission Company,Guangxi Liuzhou 545006,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司柳州局,广西柳州545006

出　　处：《广西电力》2020年第2期82-85,共4页Guangxi Electric Power

摘　　要：针对一起500 kV交流母线送电失败故障,通过建立母线耦合电压计算模型,分析了500 kV断路器均压电容器对多串3/2接线送电操作的影响,计算得到了500 kV断路器热备用状态下均压电容器对母线的耦合电压及增长规律,为现场故障处理提供了有效的指导。为避免类似故障再次发生,从设计、运行操作方面提出了有效的防护措施。Aimed at reviewing a 500 kV AC busbar energizing failure,the influence of the voltage equalizing capacitor in the500 kV circuit breaker on the energizing operation of the multi-string 3/2 connection mode was analyzed by the establishment of a busbar coupling voltage calculation model.The coupling voltage and increase rule of the equalizing capacitor to the busbar under the hot standby mode of the 500 kV circuit breaker are calculated,providing effective guidance for the field fault treatment.In order to avoid the recurrence of similar failures,effective protective measures are proposed in terms of design and operation.

关 键 词：500kV母线 送电失败 计算模型 均压电容器 

分 类 号：TM561[电气工程—电器]