电网技术2017，Vol.41Issue(10)：3174-3179,6.DOI:10.13335/j.1000-3673.pst.2017.1436
特高压交流半波长输电线路保护体系
UHV AC Half-Wavelength Transmission Line Protection Scheme
周泽昕 1王兴国 1柳焕章 2郭雅蓉 1杜丁香1
作者信息
- 1. 电网安全与节能国家重点实验室(中国电力科学研究院),北京市 海淀区 100192
- 2. 国网公司华中分部,湖北省 武汉市 430077
- 折叠
摘要
Abstract
Length of UHV AC half-wavelength transmission line is much longer than normal transmission lines. Electromagnetic wave propagation time and channel delay is also longer after fault. Its fault electric characteristics are nonlinear and non-monotonic. Traditional protection theory and action performance cannot meet its requirements. UHV AC half-wavelength transmission line protection scheme is proposed in this paper. The scheme, using spatial-temporal characteristics of the line, consists of one-terminal transient protection and two-terminal transient protection, including blocking type, ranging type and permissive type protections. It eliminates impacts caused by electromagnetic wave propagation time and channel delay. Its action speed meets the standard of UHV transmission line protection. With this scheme, the fault of UHV AC half-wavelength transmission line can be cleared quickly.关键词
特高压半波长输电线路/自由波能量保护/假同步保护/闭锁式保护/允许式保护/测距式保护/保护配置Key words
UHV AC half-wavelength transmission line/transient wave energy protection/asynchronous protection/blocking type protection/permissive type protection/ranging type protection/protection configuration分类
信息技术与安全科学引用本文复制引用
周泽昕,王兴国,柳焕章,郭雅蓉,杜丁香..特高压交流半波长输电线路保护体系[J].电网技术,2017,41(10):3174-3179,6.
