摘要
对一起110 kV变压器铁芯多点接地故障的分析判断过程进行了详细表述。从发现变压器油色谱数据异常,初步判断变压器内部存在故障;对油色谱数据进行详细分析,并结合停电诊断试验、设备历史运行情况,综合分析判断为铁芯多点接地故障;最后根据分析结果和现场实际情况进行了故障处理。该案例的分析处理过程为同类故障的分析判断及处理提供了一种解决思路及参考经验。
This paper describes in detail analysis and diagnosis process of a case of multi-point grounding fault encountered by a 110 kV transformer core.Based on the discovery of abnormal oil chromatogram data,it is preliminarily determined the occurrence of the internal fault in the transformer.Through detailed analysis of oil chromatography data,combined with power outage diagnosis tests and equipment historical operation,it is comprehensively analyzed and determined that the fault is of multi-point grounding type.Finally,troubleshooting is carried out based on analysis results and practical on-site conditions.The analysis and troubleshooting process of this case provides a solution and reference for analysis,diagnosis,and troubleshooting of similar faults.
作者
程杰
崔杨柳
吴俊杰
蔡云清
周云龙
CHENG Jie;CUI Yangliu;WU Junjie;CAI Yunqing;ZHOU Yunlong(State Grid Nantong Power Supply Company,Nantong 226000,China)
出处
《电工技术》
2023年第24期119-121,共3页
Electric Engineering
关键词
变压器铁芯
多点接地
油色谱分析
transformer core
multi-point grounding
oil chromatography analysis
