工矿自动化2013，Vol.39Issue(1)：105-110,6.DOI:10.7526/j.issn.1671-251X.2013.01.028
煤矿35 kV线路防雷保护间隙的研究
Research of lightning protection gap of 35 kV power line of coal mine
邓杰文 1任文斌 2刘源 1张东 1易小飞 1廖志华1
作者信息
- 1. 长沙理工大学电气与信息工程学院,湖南长沙410076
- 2. 山西阳泉煤业(集团)有限责任公司,山西阳泉045008
- 折叠
摘要
Abstract
In order to test lightning protection effect of protection gap for 35 kV power line, the paper simulated lightning invasion in 35 kV transformer taking 35 kV overhead line of a mine as model by use of ATP-EMPT electromagnetic transient analysis software, and compared over-voltage peak value at high-voltage side of transformer before and after installing the protection gap. The compare result showed that the protection gap can significantly reduce the peak value of lightning invasion wave at high-voltage side of the transformer after 35 kV power line is subjected to single-phase or three-phase lightning. The paper also analyzed lightning withstanding level and rate of lightning trip of 35 kV power line with lightning protection gap, whose conclusions are the lightning withstanding level reduces and rate of lightning trip rises, while the two parameters satisfy requirements of DL/T 620-1997. The application results showed that the lightning protection gap installed on 35 kV line of coal mine can effectively inhibit lightning from invading substation device, but should run with automatic reclosing device for higher reliability of line lightning protection.关键词
煤矿电网/35 kV架空线路/线路防雷/雷电过电压/保护间隙/耐雷水平/雷击跳闸率/ATP-EMPTKey words
power grid of coal mine/ 35 kV overhead lines/ line lightning/ lightning over-voltage/ protection gap/ lightning withstanding level/ rate of lightning trip/ ATP-EMPT分类
矿业与冶金引用本文复制引用
邓杰文,任文斌,刘源,张东,易小飞,廖志华..煤矿35 kV线路防雷保护间隙的研究[J].工矿自动化,2013,39(1):105-110,6.
