CAJ | 학술논문

通过油中溶解气体跟踪分析发现某550 kV变压器乙炔含量突然快速增长.结合历史运行工况及测试数据综合分析,判定其内部存在低能量裸金属放电,故障未涉及固体绝缘.将主变返厂吊罩,查明变压器运行异常主要由高压引线装置支撑衬条缺失引起,并提出了相应处理措施,保障了变压器的安全可靠运行.
통과유중용해기체근종분석발현모550 kV변압기을결함량돌연쾌속증장.결합역사운행공황급측시수거종합분석,판정기내부존재저능량라금속방전,고장미섭급고체절연.장주변반엄조조,사명변압기운행이상주요유고압인선장치지탱츤조결실인기,병제출료상응처리조시,보장료변압기적안전가고운행.
Acetylene content rapid increasing is revealed by testing the dissolved gas-in-oil of a 550 kV transformer. The causes of this fault are discussed based on historical operating conditions and testing data. It is pointed out that there is low energy bare metal discharge in transformer,but it has not affected solid insulation. The transformer's abnormal operation is mainly caused by the lack of high-voltage wire device support strips,and corresponding treatment measures are proposed to ensure security and reliable operation of the transformer.