摘要
滇西北至广东±800 kV特高压直流工程作为南方电网第三个特高压直流输电工程,在阀组投退策略上采用了有别于之前两个工程的零功率模式。介绍了滇西北直流工程采用的零功率模式阀组投退具体过程,重点分析了该模式下阀组投退对本极另一阀组的影响、对交流系统的影响,以及投退策略的特点。借助RTDS实时数字仿真平台,对阀组带电投退过程及其影响进行了仿真分析,为研究特高压直流阀组投退策略及现场运行维护提供参考。
As the third UHVDC project of CSG,Dianxibei-Guangdong±800 kV UHVDC project used the zero-power mode on the strategy of deblock/block valve groups which was different from the previous.In this paper,the detaileds process of the zero-power mode used in the second valve group′deblock/block was introduced,with a focus on the impacts on the other valve group and the AC system,and the analysis on the characterics of this mode was included.By means of real-time digital simulator(RTDS),simulating and analysing the process and the impacts of second valve group′s deblock/block,to provide references to the research on the strategy of deblock/block valve groups in UHVDC and for the on-side operation and maintenance.
作者
贺红资
HE Hongzi(Dali Bureau,CSG EHV Power Transmission Company,Dali 671000,China)
出处
《电工技术》
2019年第23期95-97,100,共4页
Electric Engineering
关键词
滇西北直流
特高压
阀组投退
换流器投入
换流器退出
Dianxibei-Guangdong project
UHVDC
deblock/block valve groups
converter entry
converter exit
