微电网中双馈感应风力发电系统控制方法研究  

Control strategy for DFIG-based wind farm in microgrid

作　　者：李国庆[1] 王鹤[1,2] 李鸿鹏[1] 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012 [2]华北电力大学电气与电子工程学院,北京102206

出　　处：《电力自动化设备》2013年第10期1-7,52,共8页Electric Power Automation Equipment

基　　金：长江学者和创新团队发展计划(IRT1114)~~

摘　　要：提出一种微电网中双馈感应风力发电系统的控制方法。并网运行时双馈感应发电机(DFIG)捕获最大风能,并采用灵敏度分析方法调整输出的无功功率来抵消有功功率变化引起的电压波动;孤岛时DFIG以电压幅值和频率可控的方式运行,并模仿下垂特性直接与其他采取下垂控制的分布式电源配合。仿真结果表明,所提方法能够调节微电网的有功功率平衡,并维持系统的电压稳定,在并网及孤岛运行状态下都能够保持微电网的平稳运行。A control strategy is proposed for the DFIG（Doubly Fed Induction Generator ） -based wind farm in microgrid,which,in grid-connection mode,tracks the maximum wind power and adjusts the output reactive power by sensitivity analysis to depress the voltage fluctuation caused by active power variation,while in islanding mode,controls the amplitude and frequency of DFIG voltage and imitates the droop characteristics to cooperate with other distributed generators with droop control. Simulative results show that,the proposed strategy adjusts the active power balance of mierogrid and maintains the voltage stability of system, supporting the stable operation of microgrid in either grid-connection mode or islanding mode.

关 键 词：微电网 分布式发电 双馈感应电机 电压控制 灵敏度分析 下垂特性 

分 类 号：TM614[电气工程—电力系统及自动化]