摘要
为优化高压单芯电缆交叉互联接地方式,首先对交叉互联接地方式的优缺点进行分析,指出交叉互联接地方式的主要缺陷,来自金属护层感应环流的不可避免以及线路改造时接地方式改造的困难。讨论目前常用的几种金属护层感应环流的抑制措施,指出它们在有效性和适用性上存在的问题,最后提出了金属护层接地方式的优化方案,能有效地解决感应环流和线路改造困难等问题,可作为以后工程的推广方向。
In order to optimize the cross-bonding connection of AC single-core cable, the merits and demerits of cross-bonding connection are analyzed at first. It is pointed out that the main demerits lie in inevitability of induced circulating current of metallic sheath and reconstruction difficulty of grounding method caused by line reconstruction. After analyzing the given suppression measures of induced circulating current, the effectiveness and applicability are pointed out to be problematic. In order to solve the problems of induced circulating current and reconstruction difficul- ty, the optimization schemes of grounding methods are given at last.
出处
《电线电缆》
2014年第3期33-37,共5页
Wire & Cable
关键词
接地方式
交叉互联
感应电压
感应环流
独立地网
grounding method
cross-bonding
induced vohage
induced circulating current
independent grounding grid
