Simulation of Temperature Distribution in Current Transformers with Current Flow
(0) On-site experience suggests the possibility of condensation of the moisture in Current transformers (CTs) which is impossible theoretically if temperature distribution in the CT is uniform.In order to study the temperature distribution in a typical CT,finite element analysis software (COMSOL Multiphysics) is used to obtain the temperature distribution of the outer surface and inside of SF6 in CT in different ambient temperatures (20 ℃ to-10 ℃).Besides,experiments are conducted to obtain the temperature of different positions on the CT surface that correspond to conductor,shell,spacer and porcelain bushing that are inside the CT with different ambient temperature.Both simulation and experiments show that temperature distribution in the CT is non-uniform,and the closer the part is to the conductor,the higher the temperature.Furthermore,maximum temperature difference remains about 35 ℃ in both simulation and experiments with different ambient temperatures from 20 ℃ to-10 ℃.
Current transformer non-uniform temperature distribution Finite element analysis
YAN Zhenhua REN Xiang REN Hang DING Weidong
Ningxia Electric Power Research Institute,Yinchuan,Ningxia,China State Key Laboratory of Electrical Insulation and Power Equipment,Xian Jiaotong University,Xian,Sh
国际会议
济南
英文
882-886
2012-12-29（万方平台首次上网日期，不代表论文的发表时间）