华电技术 ›› 2019, Vol. 41 ›› Issue (2): 18-21.

• 研究与开发 • 上一篇    下一篇

一种适用于T接线路电流差动保护装置的研制

  

  1. 1.国电南京自动化股份有限公司,南京〓210003;  2.南京国电南自电网自动化有限公司,南京〓211153;3.国网浙江省电力公司,杭州〓310007
  • 出版日期:2019-02-25 发布日期:2019-03-13

Research on a differential current protection device for Tconnection lines

  1. 1.Guodian Nanjing Automation Company Limited, Nanjing 210003, China; 2.Nanjing SAC Power Grid Automation Company Limited,Nanjing 211153, China; 3.Zhejiang Electric Power Corporation of State Grid, Hangzhou 310007, China
  • Online:2019-02-25 Published:2019-03-13

摘要:

介绍了T接输电线路的主要特点和应用现状,针对三端数据同步方法、差动保护判据、电流互感器(CT)饱和判断方法、运行方式转换逻辑等原理进行了分析,并将其应用于T接线路电流差动保护装置中。动态模拟试验结果表明,基于相关原理开发的T接线路光纤电流差动保护装置性能优越、动作可靠,完全能够满足T接线路全线速动的要求。

关键词:

Abstract:

It introduces the main characteristics and application status of Tconnection lines. It also analyzes threeterminal data synchronization method, differential protection criterion, CT saturation discrimination method, logicconverting operation mode which are applied into Tconnection current differential protection device. The dynamical simulation test results show that the performance of fiber differential current protection device for Tconnection lines developed according to the principles above is excellent and reliable, which can completely meet the requirement for wholeline quickaction of Tconnection lines.

Key words: