大功率并网风电机组变流器状态监测技术综述  

Overview of Condition Monitoring Technologies of Power Converter for High Power Grid-Connected Wind Turbine Generator System

作　　者：李辉[1] 刘盛权 冉立[1] 李洋[1] 胡姚刚[1] 杨东[1] 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044

出　　处：《电工技术学报》2016年第8期1-10,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(51377184);国际科技合作专项(2013DFG61520);中央高校基本科研业务费专项基金(CDJZR12150074)资助项目

摘　　要：风力发电系统在未来能源系统中占有重要地位,其安全可靠运行对于风电健康发展至关重要。现有的大功率并网风电机组中,几乎全部采用电力电子变流器,且其应用将覆盖更多的领域。由于风电机组复杂的运行环境和特殊的运行工况,其变流器的可靠性问题正成为业界关注的焦点。本文综述了风力发电应用中功率器件的老化失效机理,阐明了低频运行工况及风速随机波动对风电机组机侧变流器功率循环能力的影响,对比讨论了提高风电变流器可靠性和可用率的状态监测方法,并分析了其可能的发展趋势。As a significant part of the future energy landscape, reliability of wind turbine is vital. Power electronic converters are widely used in high power wind turbines. The reliability of the wind power converters is becoming an issue deserved more attention, due to the complex environment and special operation of wind turbines. This paper presents a review of the aging-to-failure mechanisms of power electronic converters in the context of wind turbine application, as well as states the impacts of incessant thermal cycling associated with low frequency operation on the generator side and the random wind turbulence. Condition monitoring methods of wind power converters are analyzed for improving the reliability and availability of wind turbines. The development trends are also discussed.

关 键 词：风力发电 变流器 可靠性 老化失效 状态监测 

分 类 号：TM614[电气工程—电力系统及自动化] TM46