直流双极闭锁故障下提高暂态电压稳定性策略探讨  

Discussion on Strategies to Enhance the System Transient Voltage Stability Under the DC Bi-polar Block Fault

作　　者：白岩[1] 陈辉祥[2] 王仲鸿[1] 

机构地区：[1]清华大学电机系,北京市100084 [2]广东省电力设计研究院,广东省广州市510600

出　　处：《电力系统自动化》2006年第15期93-96,共4页Automation of Electric Power Systems

基　　金：国家重点基础研究发展计划(973计划)资助项目(2004CB217907)~~

摘　　要：南方电网2015年将形成多条直流输电线路并联交流电网的局面。文中对直流输电的严重故障——双极闭锁故障进行了深入的仿真研究。分析了由此导致的暂态电压稳定问题,从原理上对该问题进行了理论分析,通过仿真计算证实了理论分析的合理性。提出了一种新的保留故障直流线路处的电容器组的策略,以提高故障下的暂态稳定性。通过仿真说明了这种方法的可行性。There will be several DC lines parallel connected to the South China Power Grid in 2015. A severe fault, i.e. DC bipolar block is selected to go deep into the research by simulation. The transient stability problem caused by this severe fault is theoretically analyzed and the rationality of the analysis is proved by the simulation. A novel new strategy is proposed, in which the filter of the DC fault line at converter station is reserved to enhance the system transient voltage stability under this fault. Finally the feasibility of this approach is proved by simulation.

关 键 词：直流双极闭锁 滤波器 无功补偿 南方电网 交直流并联系统 

分 类 号：TM712[电气工程—电力系统及自动化]