110kV长庆电缆护套绝缘过电压保护分析计算  

ANALYSIS AND CALCULATION OF OVERVOLTAGE PROTECTION OF JACKET INSULATION OF 110 kV CABLE

作　　者：杨守信 杨力 

机构地区：[1]河南立新电力监理有限公司濮阳监理部,濮阳457000 [2]河南濮阳市电业局,濮阳457000

出　　处：《高电压技术》2004年第4期22-24,共3页High Voltage Engineering

摘　　要：针对最大负荷运行与系统单相接地短路两种状态 ,分析、计算了 110kV长庆三相单芯电缆线路的护套电路中可能出现的工频感应电压及其引起的环流数值等 ,指出电缆芯线中通过最大负荷电流时 ,3个护套链中电流引起的总功损约 0 .35kW ,对芯线负荷能力及护套温升影响不大。单相接地线路时 3个护套链电路中 ,工频感应总电压大小基本相等 ,相位相同。In this thesis, analysis and calculation is made for the possible induced industrial frequency voltage and the loop current in cable jacket circuit in 110 kV Changqing 3-phase single core cable project. It is done in the max. load and single-phase grounding condition. The problem is stated and the proposal and suggestion of operation is given.

关 键 词：单芯电力电缆 电缆护套 绝缘 过电压保护 计算 

分 类 号：TM853[电气工程—高电压与绝缘技术]