摘要
国内外对于控制电缆屏蔽层应一端接地还是两端接地仍存在很大的争议.从分析地电位升高的危害和控制电缆屏蔽层接地的作用入手,通过比较不同接地方式下引起地电位干扰的2种地网电流对控制电缆的感应电压的大小,得出两端接地时的干扰电压比一端接地时要小.因此控制电缆应采用屏蔽层两端接地的方式.
The selection of control cable shielding line grounding method with one terminal or both terminals is a disputed problem. The paper analyzes the damage of high earth potential and the function of control cable shielding lines. Comparing the power grid current induced voltages in the control cables caused by one terminal grounding and that caused by both terminals grounding, it is found that the grounding method with both terminals has lower interference voltage than that with one terminal. Ii is suggested that the control cable should take both terminals grounding mode.
出处
《电力科学与技术学报》
CAS
2007年第4期72-75,共4页
Journal of Electric Power Science And Technology
关键词
控制电缆
地电位干扰
屏蔽层
接地方式
control cable
earth potential interference
shielding line
grounding method
作者简介
陶蓉（1982-），女，硕士研究生，主要从事高电压与绝缘技术研究．
