基于模糊PI控制器的风电机组动态稳定性分析  

Dynamic Analysis of Wind Turbines Based on Fuzzy PI Controller

作　　者：饶成诚[1] 王海云[1] 周静[2] 刘磊[1] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047 [2]中科华核电技术研究院有限公司上海分公司,上海200030

出　　处：《陕西电力》2013年第3期18-22,共5页Shanxi Electric Power

基　　金：教育部重点项目(210244);自治区高新技术项目(201132116)

摘　　要：并网风电场会对电网的安全稳定运行造成一定影响。当风电机组并网接入点发生短路故障时,双馈风电机组必须通过控制才能获得较好的动态特性并具备低电压穿越(Low Voltage RideThrough,LVRT)能力。为提高并网风电机组的故障穿越能力,设计了模糊PI控制器,建立了双馈风电机组并网仿真模型。仿真结果表明,较传统的PI控制器,模糊PI控制器可以抑制故障时双馈风电机组的有功功率、机端电压以及换流器直流母线电压的振荡,提高并网系统的故障穿越能力。Stable operation of power system would be influenced by integrating wind farms. When the fault occurred at the point of PCC（Point of Common Cnupling）,it is essential for the doubly-fed wind turbine to adopt some eontrol strategy in order to get a better dynamic characteristics and the ability of LVRT. For improving the LVRT ability of DFIG, the application of fuzzy PI controller is proposed. The power system including wind farms is built. The simulation results show that, compared with the PI controller, the fuzzy Pl controller ean restrain oscillation of the active power, the voltage of wind turbine and the DC bus voltage of DFIG. The LVRT capaeity of DFIC is improved significantly.

关 键 词：风电场 双馈风电机组 故障穿越 模糊PI控制器 

分 类 号：TM315[电气工程—电机]