南方电网技术2016，Vol.10Issue(2)：32-37,6.DOI:10.13648/j.cnki.issn1674-0629.2016.02.005
基于雷电冲击特性的同塔多回输电线路并联间隙配置
Parallel Gaps Configuration for Multi-Circuit Transmission Line on the Same Tower Based on Lightning Impulse Characteristics
蔡昊晖 1苏杰 2任华 2张耿斌 1许衡 2张成巍 1陈坤2
作者信息
- 1. 广州供电局有限公司，广州510000
- 2. 国网电力科学研究院武汉南瑞有限责任公司，武汉430074
- 折叠
摘要
Abstract
As there are large number of phase conductors of multi-circuit transmission line on the same tower,the parallel gaps config-uration for the line is complicated and different configuration mode exhibits different lightning performance. Combined with double-cir-cuit and triple-circuit transmission line on the same tower of Guangzhou Power Supply Bureau,optimal parallel gap configuration scheme for lightning performance of multi-circuit transmission line on the same tower is proposed based on analysis of lightning im-pulse characteristics of insulator strings and lightning protection performance,meanwhile,the lightning protection validity of parallel gaps is also studied. The results show that the lightning impulse 50% flashover voltage of long insulator with parallel gaps is about 80% of that without parallel gaps,and the voltage-time characteristic curve of long insulator with parallel gaps is under that without parallel gaps. The two aspects both indicate good insulation coordination between parallel gaps and insulator. The lightning impulse flashover arc can be led to the air formed by parallel gaps till extinction which proves effective protection of parallel gaps for insulator against lightning. It can be concluded as well that unbalanced insulation configuration between circuits formed by parallel gaps plays an effective role in reducing the lighting simultaneously trip-out rate of multi-circuit transmission line on the same tower.关键词
并联间隙/雷电冲击/同塔多回线路/差绝缘/防雷保护Key words
parallel gaps/lightning impulse/multi-circuit transmission line on the same tower/unbalanced insulation/lightning protection分类
信息技术与安全科学引用本文复制引用
蔡昊晖,苏杰,任华,张耿斌,许衡,张成巍,陈坤..基于雷电冲击特性的同塔多回输电线路并联间隙配置[J].南方电网技术,2016,10(2):32-37,6.
