高压单芯电缆接地系统破坏后的悬浮电压分析  

Floating Voltage Analysis of the HV Single-core Cable after Its Grounding System Broken

作　　者：丛光[1] 韩晓鹏[1] 周作春[2] 张文新[2] 李华春[3] 陈平 

机构地区：[1]北京电力设计院,北京100055 [2]北京市电力公司,北京100031 [3]北京市电力电缆公司,北京100027

出　　处：《供用电》2009年第5期61-64,共4页Distribution & Utilization

摘　　要：高压单芯电缆的接地系统一旦被破坏,在其电缆金属护层上会产生高值悬浮电压而引发严重后果。介绍了电缆金属护层悬浮电压的计算方法,并分析计算了运行中110 kV单芯电缆金属护层两端不接地时的悬浮电压值,讨论了影响悬浮电压的主要因素及其危害性,提出了解决电缆金属护层悬浮电压的相关措施。Once the grounding system of HV single-core cable is broken, high floating voltage will appear on its metal sheath, thus causes serious consequence. This paper introduces the calculation method of the floating voltage on cable＇s metal sheath, analyzes and calculates the floating voltage on metal sheath of 110kV singlecore cable when both ends of cable＇s metal sheath are not grounded, discusses the main factors which could affect the floating voltage and the negative influence they could exert, presents the relevant measures to deal with this floating voltage on cable＇s metal sheath.

关 键 词：高压电缆 金属护层 悬浮电压 

分 类 号：TM726.4[电气工程—电力系统及自动化]