双馈风电机组故障电流特性及其影响因素分析  

Analyses of DFIG Fault Current Characteristics and Its Influencing Factors

作　　者：陈伟伟[1] 樊艳芳[1] 李凤婷[1] 张玉[1] 李智才[1] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《水力发电》2014年第12期86-89,共4页Water Power

基　　金：新疆维吾尔自治区高校科研重点项目(XJEDU-2011I05);国家自然科学基金项目(51467019)

摘　　要：风电的间歇性、随机性等特点及不同机型的控制策略对风电接入电力系统的故障电流影响很大。分析了双馈风力发电机的短路电流特性,以PSCAD为平台搭建了双馈式风力机的模型,仿真了其稳态特性和暂态特性,验证了模型的正确性。在此基础上,仿真分析了crowber投切状况、故障点位置、投运风电机组数、无功补偿、风速等因素对风电接入电力系统故障电流的影响。分析结果说明在保护整定配置时,需要考虑上述因素对故障电流的影响。The intermittent and randomness of wind power and the different control strategies of wind generator have a great influence on fault current of power system. The short circuit current characteristic of the Double-fed Induction Generator （DFIG） is analyzed by establishing a simulation model of DFIG on PSCAD platform. The static characteristics and transient characteristics of DFIG are simulated and the correctness of model is verified. On this basis, the influences of crowbar cutting condition, fault point location, number of wind generator, reactive power compensation and wind speed on fault current of power system are simulated and analyzed respectively. The simulation results illustrate the configuration of protection setting should consider the effect of above factors.

关 键 词：双馈风电机组 仿真建模 故障电流 影响因素 

分 类 号：TM614[电气工程—电力系统及自动化] TM743