电机与控制应用2017，Vol.44Issue(4)：86-92,7.
不平衡电压下双馈异步发电机定子绕组匝间短路故障的稳态仿真分析
Steady State Simulation of Stator Winding Inter Turn Short Circuit Fault of Doubly Fed Induction Generator under Voltage Unbalance
摘要
Abstract
When symmetric voltage double fed wind power generator stator winding inter turn short circuit fault occurd,used the negative sequence current produced by the stator current to detect the inter-turn short circuit fault,but when the voltage was unbalanced,would also produce negative sequence current.Based on this,established the voltage of doubly fed induction motor stator winding inter turn short circuit simulation model,the only set of voltage balance,inter turn short circuit and voltage balance of inter-turn short circuit,the simulation results,the rotor current waveform and rotor current harmonic analysis,comparison and analysis of three kinds of waveform and spectrum.Simulation results showed that:the two voltage unbalance and inter-turn short circuit would produce some of the same characteristics of frequency.When the voltage unbalance and the occurrence of inter turn short circuit,through monitoring these same frequency outside the other inter turn short circuit characteristic frequency discrimination of inter turn short circuit fault,but the frequency content was particularly small,extremely easy to by motor asymmetry factors cause a miscarriage of justice,therefore,could be through the observation of stator phase current waveform changes in the qualitative discrimination of voltage imbalance of inter turn short circuit fault.关键词
双馈异步发电机/电压不平衡/谐波分析/多回路模型/匝间短路Key words
doubly fed induction generator (DFIG)/voltage unbalance/harmonic analysis/multi loop model/turn to turn short circuit分类
信息技术与安全科学引用本文复制引用
李俊卿,康文强,沈亮印..不平衡电压下双馈异步发电机定子绕组匝间短路故障的稳态仿真分析[J].电机与控制应用,2017,44(4):86-92,7.基金项目
河北省自然科学基金资助项目(2014502015) （2014502015）
