基于五次谐波的选择性漏电保护研究  

Study on selective leakage protection based on the five harmonic

作　　者：涂建[1] 黄贞辉[2] 

机构地区：[1]湖北师范学院机电与控制工程学院,湖北黄石435002 [2]上海理工大学,上海200093

出　　处：《湖北师范学院学报（自然科学版）》2012年第3期5-9,共5页Journal of Hubei Normal University(Natural Science)

基　　金：黄石市科技局校企联合项目(2010A1019-6)

摘　　要：在充分研究中性点经消弧线圈接地电网漏电电流分布特点基础上,重点研究了五次谐波特性,对零序电压、零序电流进行五次谐波提取并采用计算机控制来弥补其数量很小且幅值稳定性较差的缺点,通过总结传统谐波方向型漏电保护相关研究成果,并结合其存在的一些不足之处,从而提出了选择性动作于零序电流五次谐波的幅值和相位比较并以80C196为核心的微机应用系统来进行选择性漏电保护的新方案。Based on the distribution characteristics of leakage current of electric network of the neutral point grounding by arc-suppression coil,focusing on the five harmonic characteristics of zero sequence voltage,zero-sequence current,five harmonic extraction and use of computer control to compensate for its quantity is small and the amplitude stability is poor shortcomings,Base on the research results of traditional harmonic direction leakage protection and combined with its shortcomings,proposes Alignment at the result of compared with amplitude and phase about 5th harmonic of zero sequence current and take 80C196 as the core microcomputer application system.

关 键 词：中性点经消弧线圈接地 五次谐波 提取 选择性 漏电保护 

分 类 号：TH711[机械工程—测试计量技术及仪器]