Impacts of Large-scale Wind Power Grid Integration on Relay Protection and Countermeasures  

作　　者：He, Shien  Suonan, Jiale  Kang, Xiaoning  Song, Guobing 

机构地区：[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China [2] Wind Power Technology Center, Gansu Electric Power Corporation, Lanzhou 730050, China

出　　处：《电力系统自动化》2012年第8期136-142,共7页Automation of Electric Power Systems

基　　金：supported by National High Technology Research and Development Program of China(863Program)(No.2011AA05A104)

摘　　要：Several large-scale wind turbine tripping accidents occurred in Jiuquan wind power base in 2011.According to the on-site survey and analysis of these accidents related to relay protection,causes were found to be the collection system defects and low correct operation rate of small current grounded line selectors of the unearthed neutral point collection system.By referring to both the characteristics of Jiuquan wind power base and arrangement of relay protection,the short-circuit features of wind power and its impacts on relay protection are analyzed.The collection system and the retrofit of the small current grounded line selector are improved by specific countermeasures.Finally,further research subjects are put forward.Several large-scale wind turbine tripping accidents occurred in Jiuquan wind power base in 2011. According to the on-site survey and analysis of these accidents related to relay protection, causes were found to be the collection system defects and low correct operation rate of small current grounded line selectors of the unearthed neutral point collection system. By referring to both the characteristics of Jiuquan wind power base and arrangement of relay protection, the short-circuit features of wind power and its impacts on relay protection are analyzed. The collection system and the retrofit of the small current grounded line selector are improved by specific countermeasures. Finally, further research subjects are put forward.

关 键 词：大型风力发电机组 继电保护 小电流接地选线 整合 电网 事故发生 现场调查 运转率 

分 类 号：TM614[电气工程—电力系统及自动化] TM77