摘要
提出一种新型数字式分相电流纵差保护。它与现有电流纵差保护相比具有两个突出的特点：一是利用GPS的时间传递以全新方式实现线路两端的同步采样；二是采用最新提出的故障分量瞬时值电流差动算法。该保护在实现方式和动作性能上表现出明显的优越性。文章概括介绍该保护的总体构成，重点讨论了基于GPS的同步采样技术和新的差动算法；同时给出了算法的EMTP仿真结果和装置的动模试验结果。
This paper describes a newly developed digital phase segregated current differential protection. Compared with existing ones, this protection has two notable features: one is utilizing GPS technique to implement synchronized sampling at terminals of protected lin. Another is using new differential al gorithm based on fault component instantaneous value. The application of the new theory and tecnnique makes the protection demonstrate obvious advantages in both implementing approach and operating performance. This paper briefly introduces the overall configuration of the protection, focuses on description of GPS based synchronized sampling technique and new differential algorithm. The EMTP simulation results and dynamic simulation test results are also presented.
出处
《中国电机工程学报》
EI
CSCD
北大核心
1999年第8期49-53,共5页
Proceedings of the CSEE
关键词
输电线路
电流差动保护
GPS
同步采样
current differential protection
Global positioning system
synchronized sampling
fault component
