摘要
研究单芯电缆金属护套在交叉互联接地情况下的等值电路,建立金属护套交叉互联数学模型,编写Matlab程序,计算交叉互联单元内电缆布置方式和段长不一致时的金属护套环流,并对段长与金属护套环流大小的关系进行了分析。为减少金属护套环流,高压单芯电缆在满足电缆载流量的前提下,应尽可能采用正三角形布置方式且段长尽量相等。
The equivalent circuit of single-core cable metal sheath in cross-bonding grounding is researched,the mathematical model of cross-bonding metal sheath is established,and a Matlab program is coded.The circulating current in the sheaths is calcu⁃lated for the cable connection with different arrangements and lengths in the cross-bonding grounding unit,and the relationship between the length and circulating current in the sheaths is analyzed.In order to reduce the circulating current in the sheaths,the high-voltage single-core cable should take equilateral triangle arrangement with the same cable length under the right ampacity of power cable.
作者
王爱华
张勇
刘云杰
田连博
芦灯
WANG Aihua;ZHANG Yong;LIU Yunjie;TIAN Lianbo;LU Deng(Shandong Electric Power Engineering Consulting Institute Co.,Ltd.,Jinan 250013,China)
出处
《山东电力高等专科学校学报》
2022年第1期1-4,共4页
Journal of Shandong Electric Power College
关键词
电力电缆
护套环流
交叉互联
布置方式
power cable
circulating current in sheath
cross-bonding
arrangement mode
