基于故障暂态电流分量的双回线保护原理  

New principle for double-circuit transmission line protection based on transient faulted current component

作　　者：张举[1] 李志雷[1] 周强强[1] 杨春光[2] 

机构地区：[1]华北电力大学电气工程学院继电保护与安全控制技术研究所,河北保定071003 [2]大唐保定热电厂,河北保定071051

出　　处：《华北电力大学学报（自然科学版）》2006年第2期50-53,共4页Journal of North China Electric Power University：Natural Science Edition

摘　　要：提出了一种利用故障分量中的暂态电流分量实现双回线继电保护的新原理。通过比较故障后双回线上两支路暂态电流分量的相关度来判断区内、外故障。讨论了该保护的动作判据和动作特性,理论分析和仿真计算证明了所提保护原理的正确性和方案的可行性。A new principle for double-circuit transmission line protection based on transient protection theory is suggest, The correlation degree between two circuits is used to distinguish the internal and external faults.The action criteria and action performance in this scheme are discussed. The faults branch is selected by branch transient current magnitude.The EMTP simulation verifies the feasibility of the principle.

关 键 词：暂态分量 双回输电线路 相关度 继电保护 

分 类 号：TM773[电气工程—电力系统及自动化]