基于暂态电流极性比较原理的多线路集成保护研究  

Integrated Protection of Multi-Line Based on Transient Current Polarity Comparison Principle

作　　者：和敬涵[1] 张飚[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《北京交通大学学报》2007年第3期105-108,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(50677003);北京交通大学科研基金资助项目(E06J0060)

摘　　要：提出了电力系统集成保护的方案,描述了一种基于暂态电流极性比较原理的多出线集成保护系统.当故障发生后,对母线所有出线的暂态电流模量的模极大值进行极性比较就可以判别故障发生的相对位置.理论分析和仿真结果表明,利用单侧母线各出线的暂态电流信号的模量进行小波变换后的模极大值极性来判别故障的相对位置是切实可行的.Power system transient protection has the advantages of high response speed, high accuracy anti is not affected by power frequency phenomena, e, g. oscillation and transition resistance. The paper presents the scheme of integrated protection and introduces integrated protection system based on transient current polarity comparison principle. The relative situation of the fault can be distinguished by the transient current modular maximum polarity comparison from all the emanating line of a single bus. Theoretical analysis and extensive simulation studies show that it is feasible to utilize transient current modular maximum polarity comparison to distinguish the relative situation of the fault through wavelet transform.

关 键 词：集成保护 暂态电流 极性比较 模极大值 

分 类 号：TM771[电气工程—电力系统及自动化]