风力发电机绝缘系统可靠性评定方法探讨  

Discussion on Reliability Evaluation Methods of Wind Generator Insulation System

作　　者：李园园 LI Yuanyuan(Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd.,Shanghai 200063,China;Shanghai Testing&Inspection Institute for Electrical Equipment,Shanghai 201401,China)

机构地区：[1]上海电器科学研究所(集团)有限公司,上海200063 [2]上海电器设备检测所有限公司,上海201401

出　　处：《电机与控制应用》2021年第8期90-97,105,共9页Electric machines & control application

摘　　要：风力发电正在快速发展。风力发电机作为发电机组的重要组成部分,其绝缘系统的可靠性对于整个风电机组的可靠性具有重要意义。与普通发电机相比,风力发电机引入变流器,绝缘系统所承受的应力不同,如高频脉冲电压、局部放电等。同时,风力发电机的运行环境较复杂,绝缘系统受高湿度、高温差、重盐雾等因素的影响。针对实际运行需求,介绍了风力发电机绝缘系统从不同维度出发的可靠性评定方法,主要包括长期耐热性评定、电应力耐久性评定以及环境可靠性评定。对各种方法进行分析,便于整机生产商根据实际需求选择合适的评定方法,提高风力发电机产品的可靠性。With the rapid development of wind power generation,wind generator has become an important part of the generator sets.The reliability of the generator insulation system is of great significance to improving the reliability of the entire wind generator set.Compared with ordinary generators,wind generators introduce converter and the insulation system bears different stresses such as high-frequency pulse voltage and partial discharge.At the same time,the operating environment of wind generators is more complicated,so that the insulation system is affected by factors including high humidity,high temperature difference,heavy salt spray,etc.during long-term operation.In response to actual operating requirements,the reliability evaluation methods of wind generator insulation systems are introduced from different dimensions,including long-term heat resistance,electrical stress durability and environmental reliability.Various methods are analyzed,so that the complete machine manufacturer can choose the appropriate evaluation method according to the actual demand and improve the reliability of the wind generator products.

关 键 词：风力发电机 绝缘系统 长期耐热性 电应力耐久性 环境可靠性 

分 类 号：TM315[电气工程—电机]