一起110 kV变电站主变动作的原因分析  

Cause Analysis of Main Transformer Protection Action in a 110 kV Substation

作　　者：吴薇 汪振中 杨松 张仁标 朱宝 胡细兵 WU Wei;WANG Zhenzhong;YANG Song;ZHANG Renbiao;ZHU Bao;HU Xibing(State Grid Anqing Power Supply Company, Anqing 246000, China)

机构地区：[1]国网安庆供电公司,安徽安庆246000

出　　处：《安徽电气工程职业技术学院学报》2019年第1期49-52,共4页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：文章对某110 kV变电站变压器差动保护动作原因进行了详细的分析,经过对主变进行相关试验、油化验检查,以及开关柜一一排查后,分析了在相间接地故障情况下,主变差动保护正确动作。最后提出了改进措施,旨在更好地完善变压器保护的运行和维护。This paper makes a detailed analysis of the causes of the differential protection of transformers in a 110 kV substation. After related tests on the main transformers, oil test checks and the investigation of the switch-gear cabinets one after another, it has been found that the differential protection of the main transformers is correct in the case of phase-to-phase ground faults. Finally, measures are proposed to better improve the operation and maintenance of transformer protection.

关 键 词：110KV变电站 变压器 差动保护 相间故障 

分 类 号：TM773.4[电气工程—电力系统及自动化]