南方电网直流闭锁故障时受端系统电压稳定问题分析  

Voltage stability analysis of receiving-end system in China South Power Grid under the DC block faults

作　　者：杨雄平[1] 罗向东[1] 李扬絮[1] 杨银国[1] 

机构地区：[1]广东省电力调度中心,广东广州510600

出　　处：《电力系统保护与控制》2008年第22期40-43,共4页Power System Protection and Control

摘　　要：作为南方电网的受端电网和负荷中心,有多条交直流落点从云南、广西、贵州送端电网馈入广东电网。对交直流并联电力系统中的直流双极闭锁故障导致的动态电压稳定问题进行了研究,分析和讨论了动态无功补偿装置、紧急切除线路高抗、保留直流故障线路处电容器组策略,以提高直流闭锁故障时的暂态电压稳定性,通过仿真分析对三种策略进行了研究和比较,对各策略进一步的研究重点及存在的问题给出了建议。There are several AC and DC parallel tie lines connected to the Guangdong power grid from the else east power grids. This paper studies the voltage stability caused by the DC bipolar block faults .Three strategies including installment of SVC（Static Synchronous Compensator）, rapid removal of high voltage reactor in tie AC lines, and reserving the filter of the DC fault line at converter, are proposed and studied to enhance the voltage stability of the receiving-end power grid. These strategies are proved and discussed by simulation and analysis. Suggestion about the emphasis and problems of these strategies are given for further.

关 键 词：交直流并联运行 双极闭锁 电压稳定 南方电网 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化]