双馈型风电机组低电压穿越技术要点及展望  

A Review on Low Voltage Ride-through Technologies and Prospect for DFIG Wind Turbines

作　　者：徐海亮[1] 章玮[1] 贺益康[1] 陈建生[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《电力系统自动化》2013年第20期8-15,共8页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(50907057);浙江省自然科学基金资助项目(Y13E070002);教育部博士研究生学术新人奖资助项目~~

摘　　要：近年来,风电机组在电网故障条件下的不间断运行,特别是低电压穿越已成为风电技术的重要内容,相继列入各国并网规程。文中深入解读了并网规程中低电压穿越运行的基本要求,以当前作为主流机型的双馈异步发电机为例,从机组安全并网、无功支撑和优化运行的角度,全面阐述了实现这一运行要求的几个技术要点和关键问题,并对现有的技术方案进行了相应的比较分析,以期展示这一技术的最新研究成果,预测未来可能的发展动向。In recent years, wind-turbines have been required to possess the fault ride-through capability, especially the low voltage ride-through （LVRT） during grid fault. It has been included in the latest grid codes of many countries. The paper firstly analyses the grid code requirements on the wind farm grid connection in this regards and then the doubly fed induction generator （DFIG）, a popular type of wind turbine, is taken as an example to explain the key points of LVRT technologies, from the viewpoint of secure grid-connection, reactive power support and optimized operation. Finally, the current technologies are reviewed and compared in order to present the latest progress in the LVRT technologies, and discusses its future possible development.

关 键 词：双馈感应发电机 低电压穿越 高电压穿越 无功补偿 灭磁控制 Crowbar保护 

分 类 号：TM315[电气工程—电机]