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.
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
关键词
电能质量
滤波器
中性线
零序
谐波
power quality
filter
neutral line
zero-se-quence
harmonic
