0.1Hz超低频耐压试验装置在发电机耐压试验中的应用  

Application of 0.1Hz Ultra-low Frequency Voltage Withstand Test Apparatus in Generator's Voltage-withstand Test

作　　者：徐大鹏[1] 何勇[1] 付文光[1] 郭红兵[1] 

机构地区：[1]内蒙古电力科学研究院,呼和浩特010020

出　　处：《内蒙古电力技术》2014年第6期62-64,68,共4页Inner Mongolia Electric Power

摘　　要：介绍了0.1Hz超低频耐压试验装置的构成、原理,并在某发电厂机组大修时采用该装置进行发电机超低频耐压试验,在1min内向4号发电机的定子绕组施加50.9 kV测试电压,以此来判断发电机定子绕组局部和槽部的绝缘情况。通过试验证明,采用0.1Hz超低频耐压试验装置与传统工频耐压试验装置的试验结果一致,而超低频耐压试验装置的体积和质量明显减小,可有效降低装置的运输成本。Aadopting 0.1 Hz ultra-low frequency voltage withstand technology, produced 1 rain equivalent to the 50.9 kV voltage at the frequency of 0.1 Hz, applied on the generator stator winding to judge insulation partial and groove whether exists defects. This paper mainly introduced the device constitute, principle, and 0.1 Hz ultra-low frequency voltage withstand test in a power plant. Field test proved that it was equivalent to the traditional method of power frequency withstand voltage. Through the method could reduce the test frequency and power supply capacity, reduce the weight and volume of test equipment, solved the nroblem of heavy equipment and high cost.

关 键 词：发电机 交流耐压试验 0.1Hz超低频耐压试验装置 定子绕组 绝缘缺陷 

分 类 号：TM855[电气工程—高电压与绝缘技术]