某变电站35kV电缆终端发热原因分析及处理  

Analysis on Power Cable Terminal Heating in A 35 kV Substation and Treatment

作　　者：盛靖文 杨放南[2] 刘生春[1] 吴童生[1] 李军[1] 张杰[3] 

机构地区：[1]国网青海省电力公司检修公司,青海西宁810003 [2]国网青海省电力公司,青海西宁810008 [3]国网青海省电力公司电力科学研究院,青海西宁810008

出　　处：《青海电力》2016年第1期58-61,共4页Qinghai Electric Power

摘　　要：介绍了一起35 k V电缆终端发热缺陷发现、分析及处理情况,通过对发热电缆终端进行解体、红外测温等方式,查找、分析发热缺陷产生的部位,并对地网引起的环流进行计算,确定缺陷产生的原因。同时,针对发热缺陷制定了对35 k V单芯电缆加装保护接地箱的整改措施,以确保35 k V电缆设备的安全可靠运行,并为同类缺陷的消除及后期基建工程电缆施工及验收提供了技术依据。Based on the check result after decomposition and infrared temperature measurement,an analysis on the heating defective location was made,and by the calculation of loop current induced by the grounding grid the cause for the power cable terminal heating was determined. Against the defect a improvement measure to add a protection grounding box to 35 kV power cable with single core is proposed in order to ensure the safe operation of 35 kV power cable.

关 键 词：电缆终端 发热 保护接地箱 

分 类 号：TM862.3[电气工程—高电压与绝缘技术]