变电站二次电缆绝缘缺陷原因分析与治理措施研究  

Research on Reason and Treatment Measures of Secondary Cable Insulation Defects in Transformer Substation

作　　者：肖豪龙 臧欣 梁文武 欧阳帆 徐松 XIAO Haolong;ZANG Xin;LIANG Wenwu;OUYANG Fan;XU Song(State Grid Hunan Electric Power Company Limited Research Institute,Changsha 410007,China)

机构地区：[1]国网湖南省电力有限公司电力科学研究院,湖南长沙410007

出　　处：《湖南电力》2022年第2期94-97,共4页Hunan Electric Power

摘　　要：二次电缆是连接一次设备和二次设备的关键桥梁,其绝缘会影响二次设备动作的可靠性。通过实地取样解剖事故电缆,发现二次电缆绝缘缺陷原因是电缆头破损、潮气入侵、材料与结构缺陷和运检管理缺陷,并给出技术解决方案。The secondary cable is the important bridge connecting the primary equipment and the secondary equipment,and the insulation reliability will affect the operation reliability of the secondary equipment.Trough field sampling and dissecting the accident cable,it is found that the causes of insulation defects of secondary cable are cable head damage,moisture intrusion,meterial and structure defects and operation inspection management defects,and the technical solution is given.

关 键 词：二次电缆 继电保护装置 动作可靠性 绝缘缺陷 

分 类 号：TM63[电气工程—电力系统及自动化]