YJKK系列中型高压电动机绕组温升的工程计算方法  

Engineering calculation of winding temperature rise for YJKK series high-voltage motor

作　　者：夏云彦[1] 孟大伟[1] 何金泽[1] 夏云双 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080 [2]广西电网公司百色供电局,广西百色533000

出　　处：《电工电能新技术》2014年第4期71-75,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：国家科技支撑计划重点项目(2008BAF34B04);黑龙江省科技攻关重点项目(GB08A301)资助

摘　　要：针对YJKK系列箱式紧凑型中型高压电机起动温升在工程中难以准确计算的问题,对电机起动时绕组的发热和散热过程进行分析,从工程实用的角度出发,建立了相互关联的电机通风网络模型和发热散热计算模型,对电机发热和散热情况进行计算。以时间为步长,根据在每个时间段内电机的生热量和散热量来计算电机绕组温升。用所建立的模型对YJKK500-4,2500kW电机带不同负载时绕组的温升进行计算,仿真结果与实验结果吻合,满足工程中实用要求。The heating and cooling process of motor stator and rotor windings in motor starting operation has been analyzed to carry out the accurately calculation of starting temperature rise and safety running for box-type compact medium-sized high-voltage motors. To obtain a practical calculation method, which is used to calculate motor aver- age starting temperature rise, the ventilation network model is established and studied according to the specific ven- tilation structure of the motor. The heating of motor stator and rotor winding is calculated by motor dynamic charac- teristic curves considering the flux changes; and motor heat dissipation is calculated by the cooling gas flow. The successive time is segmented and winding temperature rise is calculated according to the heat generation and heat dissipation in each time period. The method is used to calculate the winding temperature rise of YJKKS00-4, 2500kW motor with different load, the simulation results are close to experimental results, which satisfy the engi- neering demands.

关 键 词：中型高压电机 绕组温升 风阻网络 起动特性 

分 类 号：TM343[电气工程—电机]