大型发电机定子线棒直流及交流耐压试验的机理研究  

The Mechanism Study of Large Generator Stator Winding in DC and AC Voltage Withstand Testing

作　　者：孙永鑫 满宇光 李正 

机构地区：[1]水力发电设备国家重点实验室,哈尔滨150040

出　　处：《大电机技术》2012年第6期1-4,共4页Large Electric Machine and Hydraulic Turbine

基　　金：水力发电设备前沿技术研究(2010CB736208)

摘　　要：本文通过对大型发电机定子线棒在直流与交流耐压试验中的特点分析,指明了两种试验的区别和联系,并使用有限元方法对存在防晕层的定子线棒进行了计算,对两种耐压形式下线棒端部表面电位、电场强度和损耗密度进行了深入分析,并通过相关试验对计算结果进行了验证。Based on the analysis of the characteristics of large generator stator bar in DC and AC voltage withstand test, this paper pointed out the differences and connections of the two tests, and stator bars existence of anti-corona layer were calculated using the finite element method, in-depth analysis the surface potential, electric field strength, and loss density of winding end of two forms, and results were verified by the relevant tests.

关 键 词：定子线棒 耐电压 电位分布 电场强度 损耗密度 

分 类 号：TM303.1[电气工程—电机]