双馈感应式风力发电系统低电压穿越技术概述  

Overview of Low Voltage Ride Through for Doubly-fed Induction Generator Wind Power System

作　　者：马春明[1] 解大[1] 张延迟[2] 

机构地区：[1]上海交通大学国家能源智能电网(上海)研发中心,上海200240 [2]上海电机学院电气工程系,上海200240

出　　处：《电气传动》2012年第5期3-7,32,共6页Electric Drive

基　　金：国家863目标导向类项目(2009AA05Z213)

摘　　要：随着风力发电在电网中所占比例的增加,电力系统对风机并网提出了更高的要求,低电压穿越技术应运而生。对电压跌落时双馈风电机进行动态分析,研究非平衡电压跌落下双馈风电机的控制,论述LVRT技术的重点与难点,介绍电压跌落发生器的研制情况。非平衡电压跌落下负序变量控制,Crowbar电路控制,风电机组LVRT检测认证体系等势必成为未来双馈风电机LVRT的研究热点。As wind power generation increases the proportion of electric power system,higher request is put forward for wind turbine connected to the grid, and the low voltage ride through（LVRT） technology comes along. Dynamic analysis of doubly-fed wind power turbine during voltage sag was discussed, and the control of doubly-fed wind power turbine under unbalanced voltage sag was discussed, important and difficult points of the low voltage ride through（LVRT） technology were also discussed. Research and manufacture of voltage sag generation was introduced at the same time. The double-fed wind turbine LVRT research will focus on nega- tive sequence variable control under unbalanced voltage drop,Crowbar circuit control,wind turbine LVRT tes- ting and certification system, etc.

关 键 词：双馈感应式发电机 低电压穿越 电网故障 

分 类 号：TM614[电气工程—电力系统及自动化]