南方电网技术Issue(2)：65-68,120,5.DOI:10.13648/j.cnki.issn1674-0629.2014.02.014
双分叉线路的接地距离保护整定计算
A Calculation Method of Grounding-Distance Protection Setting for Transmission Lines with Double-Branched Structure
文安 1王聪 2李建设 1于芮技 2莫天文 1魏承志 1寻斌斌 1李银红2
作者信息
- 1. 中国南方电网有限责任公司，广州510623
- 2. 华中科技大学 强电磁工程与新技术国家重点实验室 武汉430074
- 折叠
摘要
Abstract
Double-branched transmission line is a special structure in the extension and reconstruction of transmission lines.It can be used to increase the capacity of transmission lines, improve transmission corridors' use efficiency, save cost, shorten construction pe-riod and outage time.A model for double-branched lines has been established based on its structure, and on this basis, effect of the double branched structure to selectivity of ground distance protection has been discussed.The analysis shows that, for transmission lines with double-branched structure, it only needs to calculate zero-sequence compensating coefficient with the correct actual meas-ured value of the newly structured lines or the adjusted parameters, that can get reasonable setting values in the light of the original setting calculation method for usual lines.It provides more reasonable principles when determining the grounding distance protection settings.关键词
双分叉线路/增容改建/继电保护/整定计算Key words
double-branched transmission lines/extension and reconstruction/relay protection/setting calculation分类
信息技术与安全科学引用本文复制引用
文安,王聪,李建设,于芮技,莫天文,魏承志,寻斌斌,李银红..双分叉线路的接地距离保护整定计算[J].南方电网技术,2014,(2):65-68,120,5.
