居民用户谐波调查及仿真分析  

Harmonic investigation of resident customer and simulation analysis

作　　者：王葵[1] 李建超[1] 潘贞存[1] 侯源红[2] 吴钦坊[2] 

机构地区：[1]山东大学电气工程学院,山东济南250061 [2]济南供电公司,山东济南250012

出　　处：《电力系统保护与控制》2008年第22期88-92,103,共6页Power System Protection and Control

摘　　要：调查了多种低压民用负荷的谐波情况和典型配电网变压器低压侧的中性线电流和相线电流情况。低压民用负荷会产生大量的谐波和畸变功率,且功率因数较低,是影响配电网无功含量和功率因数的主要因素。配电网中性线电流中的三倍次谐波含量很高,相电流中奇次谐波含量很高,而且配电网的谐波网损很大。利用电磁暂态仿真程序ATP建立了两类主要的低压民用负荷模型,模型的仿真结果与实测数据基本吻合。The effect of harmonic distortion on the low-voltage home-used equipments is studied in this paper. It also investigates the phase current distortion levels and the neutral current behind the low voltage side of the transformer in the realistic distribution systems. The field data shows that nonlinear loads can produce much harmonics and distortion power. They dramatically decrease the power factor. So they are dominant effect with respect to reactive power and power factor of distribution network. Investigation presents an extremely amount of neutral current full with triple harmonics and phase current full with odd harmonics. In addition, harmonic losses are very large in distribution network. The analysis uses the time domain approach and utilizes the Alternative Transients Program （ATP） to model the different harmonic producing devices. The analysis proves that the models are identical with the realistic distribution systems.

关 键 词：低压民用负荷 谐波 畸变功率 功率因数 配电网 

分 类 号：TM714.3[电气工程—电力系统及自动化]