中性线谐波调研分析与治理技术仿真研究  

Analysis and Treatment of Neutral Harmonic Current in Low Voltage Power System

作　　者：宋祺鹏[1] 尹忠东[1] 乔琨[1] 檀跃亭[2] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京102206 [2]廊坊供电公司,河北廊坊065000

出　　处：《现代电力》2008年第5期4-8,共5页Modern Electric Power

基　　金：国家电网公司电铁供电关键技术研究项目(SGKJ[2007]102)资助

摘　　要：在三相四线制配电系统中,不平衡和非线性负载会在中性线上引起很大零序谐波电流。分析了中线谐波电流产生的机理和危害,并实地测量了北京市多家单位供电系统的中线谐波情况;对多种谐波治理方案进行了对比仿真分析,指出了各种方案的优缺点,为各单位根据实际情况选择不同的中线谐波治理方案和滤波器的优化设计、改进提供了参考。The unbalance loads and the nonlinear loads result in a significant zero-sequence harmonic current in neutral line in a three-phase four-wire distribution power system. The cause and harm of the zero-sequence harmonic current in neutral line are analyzed. Field measurements for neutral line harmonic situation are carried out in several units in Beijing. Comparative simulated analysis is conducted on a variety of harmonic treatment programs. Their shortcomings and advantages are discussed. It provides reference for the selection of proper filter and the optimization of filter.

关 键 词：电能质量 滤波器 中性线 零序 谐波 

分 类 号：TM761[电气工程—电力系统及自动化]