四川茂县水电群孤网运行电压控制  

Voltage control for the isolated operation of Maoxian electric grid in Sichuan province

作　　者：蒲倩[1] 张毅威[1] 陆秋瑜[1] 胡伟[1] 陈磊[1] 李健[2] 周剑[2] 庞晓艳[2] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084 [2]四川省电力公司,四川成都610041

出　　处：《中国电力》2012年第2期5-8,共4页Electric Power

摘　　要：水电群通过长距离超高压通道送电,大扰动后与电网解列而形成水电群孤网,孤网可能产生高压现象。基于四川茂县水电群的实际情况,对孤网高压问题进行研究,分析其主要成因,讨论利用发电机进相运行能力解决问题的可行性,提出了通过发电机励磁控制的方法,充分而合理地利用发电机进相能力,安全、有效地控制水电群孤网电压。After a large disturbance, the hydropower group connected to main system through a long distance and extra-high voltage power line may split from the system and turn into isolated operation. Over-voltage phenomenon may occur in the isolated network. Based on the actual case of Maoxian hydropower group in Siehuan province, the problem of over-voltage control in the isolated network is studied. The major causes of over-voltage are analyzed and the feasibility of over-vohage suppression by generator leading phase operation is discussed. Methods to adequately and reasonably utilize generator＇ s leading phase operation capability through excitation control of generator are proposed to control isolated system voltage safely and effectively.

关 键 词：水电群孤网 运行控制 发电机进相运行 励磁控制 

分 类 号：TM761[电气工程—电力系统及自动化]