定子双绕组感应风力发电系统不对称故障运行  

Asymmetrical Fault Ride through Operation of Dual Stator winding Induction Generator Wind Power System

作　　者：徐培凤[1] 施凯[1,2] 黄文新[2] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]南京航空航天大学自动化学院,江苏南京210016

出　　处：《电气传动》2013年第12期72-76,共5页Electric Drive

基　　金：江苏大学高级人才专项资助(07JDG052)

摘　　要：分析了电网不对称故障下定子双绕组感应电机(DWIG)风力发电机组的运行特性,系统通过发电机侧励磁变换器的快速弱磁控制,同时抑制直流侧输入功率,维持直流侧电压恒定,避免母线电压的2倍工频大幅波动,实现故障穿越。仿真结果证明,无论是单相或者两相电网电压不对称跌落,DWIG风力发电系统无需增加额外的硬件设备,通过原有的控制策略即可拥有较强的故障穿越能力。Analysis on operation characteristics of dual stator-winding induction generator（DWIG） wind power system under asymmetrical grid faults was elaborated in detail.Riding through fault is achieved by the rapid fluxweakening control by the static excitation controller on the control-winding side,which maintain output DC voltage constant,restrain input power on DC side,and avoid the fluctuations with 2 times the grid frequency.Simulation results prove that DWIG wind power system has strong fault-ride-through capability without additional hardware equipment,whether single or two phase grid voltage drop with asymmetrically degree.

关 键 词：定子双绕组感应电机 风力发电系统 不对称故障 故障穿越 

分 类 号：TM614[电气工程—电力系统及自动化] TM315