超声波局部放电检测技术在500 kV电抗器中的现场应用研究

Field application study of ultrasonic partial discharge detection in 500 kV reactor

介绍了变压器超声局部放电检测原理和缺陷定位技术,并结合某500 k V电抗器现场检测实际应用情况,阐述了超声波检测变压器局部放电的定位方法,同时配合油中溶解气体含量色谱分析,综合判断电抗器的绝缘状况。结果表明,变压器超声波局部放电带电检测和定位技术在查找电抗器缺陷方面优点显著,具有较好的实际应用价值。

This paper introduced the principle of ultrasonic partial discharge detection of transformer and defect po- sitioning technology. Combined with the actual application of field detection of a 500kV reactor, the positioning method of ultrasonic detection of partial discharge in transformer was described. Meanwhile, with the analysis of dissolved gas content in oil, synthesis was made for the reactor insulation condition. The results show that the live detection and location technology of ultrasonic partial discharge of transformer has obvious advantages in searching defects of reactor and has good practical application value.