高电压技术2018，Vol.44Issue(1)：44-50,7.DOI:10.13336/j.1003-6520.hve.20171227006
实用的半波长输电线路纵联差动保护
Practical Differential Protection for Half-wavelength Transmission Line
赵青春 1谢华 1陆金凤 1朱晓彤1
作者信息
- 1. 南京南瑞继保电气有限公司,南京210000
- 折叠
摘要
Abstract
The traditional differential protection based on lumped parameter can not be applied to half wavelength transmission lines due to the spatial and temporal electrical characteristics of half wavelength transmission line.Consequently,we proposed a method of practical differential protection based on wave equation for half wavelength transmission lines.Through the selection of the special data synchronization point,we improved the the speed,reliability and sensitivity of the protection by constructing the restraint current and setting up two-section phase current differential protections and one section zero sequence current differential protection.Based on this principle,a differential protection device was developed.A simulation model of UHV transmission line based on RTDS was established to verify this device.The simulation results indicate that the synchronous data selection,the restraint current,and two-section phase current differential protections and one section zero sequence current differential can improve the speed,reliability and sensitivity of the protection device.关键词
半波长输电线路/差动保护/同步点数据选择/特高压/波动方程Key words
half-wavelength transmission line/differential protection/synchronization points data selection/UHV/wave equations引用本文复制引用
赵青春,谢华,陆金凤,朱晓彤..实用的半波长输电线路纵联差动保护[J].高电压技术,2018,44(1):44-50,7.
