CAJ | 학술논문

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?4，2500 kW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。
침대YJKK계렬상식긴주형중형고압전궤기동온승재공정중난이준학계산적문제，대전궤기동시요조적발열화산열과정진행분석，종공정실용적각도출발，건립료상호관련적전궤통풍망락모형화발열산열계산모형，대전궤발열화산열정황진행계산。이시간위보장，근거재매개시간단내전궤적생열량화산열량래계산전궤요조온승。용소건립적모형대YJKK500?4，2500 kW전궤대불동부재시요조적온승진행계산，방진결과여실험결과문합，만족공정중실용요구。
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 YJKK500?4, 2500kW motor with different load, the simulation results are close to experimental results, which satisfy the engi?neering demands.