电力系统保护与控制2015，Vol.43Issue(18)：144-149,6.
直流滤波器保护关键问题的研究
Study on the key problems of DC filter protection
田培涛 1黄金海 1吴庆范 1张爱玲 1岳笑歌 1宋延涛1
作者信息
- 1. 许继电气股份有限公司,河南 许昌 461000
- 折叠
摘要
Abstract
Based on the analysis of the structure of DC filters, measuring point arrangement, protection system of DC filters and protection configuration strategy of protection function, the key problems in current DC filter protection of UHVDC are studied, and the corresponding suggestion and optimization scheme are given. For the protection misoperation caused by the inconsistent transient characteristics of DC filters high side and low side CT current, using the new DC filter differential protection criterion and installing optical CT measuring device in the high side and low side are suggested. Aiming at the low reliability of "selecting 2 from 3" logic export strategy caused by analog fault, a new "selecting 2 from 3" logic export strategy is proposed. The high voltage capacitor C1 internal grounding fault is simulated and analyzed by using RTDS, and a new protection function criterion and setting value suggestions are given. Study on these key problems provides a useful reference for the design of DC filter protection in the subsequent HVDC project.关键词
高压直流/配置策略/三取二/RTDS仿真/可靠性Key words
HVDC/configuration strategy/selecting 2 from 3/RTDS simulation/reliability分类
信息技术与安全科学引用本文复制引用
田培涛,黄金海,吴庆范,张爱玲,岳笑歌,宋延涛..直流滤波器保护关键问题的研究[J].电力系统保护与控制,2015,43(18):144-149,6.
