风力发电机叶片加热循环控制除冰数值仿真研究  

The Numerical Study of Electrothermal De-icing Cycle Controlled Method for Wind Turbine Blades

作　　者：舒立春[1] 杨晨 胡琴[1] 蒋兴良[1] 李瀚涛[1] 杨大川 杨航 SHU Lichun;YANG Chen;HU Qin;JIANG Xingliang;LI Hantao;YANG Dachuan;YANG Hang(State Key Laboratory of Power Transmission Equipment &System Security and New Technology (Chongqing University), Shapingba District,Chongqing 400030,China)

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)

出　　处：《中国电机工程学报》2018年第24期7149-7155,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51377180,51677014);高等学校学科创新引智计划(111计划)(52182017000X)~~

摘　　要：风力发电机的电加热除冰技术受导电滑环的功率限制,加热时间较长,除冰效率较低。针对此问题,该文提出采用新型电加热循环控制除冰方式,以重庆大学雪峰山覆冰试验站300kW风机为研究对象,结合叶素理论、湍流理论和传质传热平衡理论,建立基于流体-热力场的叶片电加热循环除冰二维耦合数值仿真。通过在叶片表面设置温度传感器监测除冰过程中的冰层温度变化,结果表明:冰层温度呈先升后降、循环升高的趋势;单次加热时间在8.5~9.5s时,总加热时间最少;所需除冰功率密度随叶片半径增加而增加。相比持续加热除冰,循环控制除冰方法可节约能耗25.9%,达到节能高效的目的。The traditional electrothermal de-icing methods have some defects with long heating time and low de-icing efficiency because of the conductive slip rings'power limit.To explore the better de-icing effect,a new method-cycle controlled de-icing method was proposed.Based on 300kW wind turbine located in the Chongqing University Xuefeng Mountain icing test station,a 2-D de-icing model of fluid and thermal field was purposed according to the blade element theory,turbulence theory and heat and mass transfer theory. Temperature sensors were installed on the blade surface to monitor the change of ice temperature.Results show that ice temperature increases and then decreases in cycle.When the single heating time is at 8.5-9.5s,the de-icing time reaches the lowest value.The de-icing power density increases follow the increase of blade radius.Compared with the sustained heating de-icing method,the de-icing energy consumption of de-icing cycle controlled method is reduced by 25.9%,which can achieve the purpose of saving energy and high efficiency.

关 键 词：风力发电机 雨凇覆冰 除冰策略 循环控制 数值仿真 

分 类 号：TM86[电气工程—高电压与绝缘技术]