摘要
联合超声波法和脉冲电流法对某台110 kV变压器局部放电缺陷进行诊断分析。通过检测,初步判断该变压器B相绕组端部存在裸金属接触不良放电缺陷。经吊罩检查,进一步印证了这两种方法联合诊断的准确性。超声波法和脉冲电流法的联合应用,实现了对变压器局部放电位置、放电类型及放电量的准确判断。
Local partial discharge defects of an 110 kV transformer are diagnosed and analyzed combing with ultrasonic method and pulse current method. By detection, it is judged preliminarily that there are partial discharge defects caused by bad contact of bare metal at the terminal of phase B winding of the transformer. By hanging hood inspection, the accuracy of combined diagnosis by the two methods is furthermore confirmed. The combined application of ultrasonic method and pulse current method realizes the accurate judgment of the location, the discharge type and the discharge quantity of transformer partial discharge.
出处
《广西电力》
2017年第6期51-54,共4页
Guangxi Electric Power
关键词
变压器
局部放电
超声波法
脉冲电流法
transformer, partial discharge
ultrasonic method
pulse current method
