可再生能源2012，Vol.30Issue(11)：36-40,5.
电源不对称对双馈风力发电机故障诊断的影响
Influence of asymmetry of power supply on fault diagnosis of doubly-fed induction generation
摘要
Abstract
Stator inter-turn short-circuit fault is one of the common faults of doubly—fed induction generation (DFIG). It affect directly the stabilization and safety of wind power generation system. However, three—phase asymmetry exists in power supply, which may lead misjudge of stator inter-turn fault. In order to eliminate the influence of asymmetry of power supply, firstly a simulation model of DIFG with the help of coupled—circuit analysis is proposed, then the fault mechanism is analyzed, finally according to spectrum graph and time domain graph, whether a stator inter—turn short-circuit fault exists and its degree are diagnosed synthetically. Simulation result show that the method can eliminate the influence of asymmetry of power supply, and can detect the stator inter-turn short-circuit fault.关键词
双馈风力发电机/定子绕组匝间短路/电源不对称/多回路分析/对称分量分析Key words
DFIG/stator inter—turn short—circuit/asymmetry of power supply/coupled-circuit analysis/symmetrical component analysis分类
信息技术与安全科学引用本文复制引用
钱艳平,朱立贵..电源不对称对双馈风力发电机故障诊断的影响[J].可再生能源,2012,30(11):36-40,5.基金项目
国家自然科学基金项目(51007019,61104081) （51007019,61104081）
河海大学中央高校基本科研业务费项目(B1020197). （B1020197）
