通过油品检测分析330kV主变有载调压开关故障的原因

Fault Analysis on 330 kV Main Transformer On-load Tap Changer by Test Technique for Oil Products

330 kV主变压器是变电站主供电设备。针对某供电局330 kV主变压器B相有载调压故障情况,从三相油质、油品颗粒污染度、油品电气强度和油中溶解气体色谱分析4个方面进行油质检测与故障分析,确定了主变压器三侧跳闸的原因,并提出了改进建议,对以后330 kV主变压器的有载调压开关运行维护有借鉴意义。

330 kV main transformer is the main facility for power-supplying in substation. In the light of the B phase fault of 330 kV main transformer on-load tap changer, oil quality test and fault analysis are carried out from four aspects of the oil quality in 3- phase, particle contamination ＆ electric strength of oil products and chromatographic analysis for the dissolved gas in oil. Based on which the causes of switch tripping on three sides of the main transformer are found out and improvement suggestions are made.