摘要
针对国内煤矿电力系统谐波污染日益严重的现状,提出一种将滤波电路与三相变压器串联,结合谐波相序特性提取电网谐波电能的方法,即滤波电路与三相变压器串联组成调谐电路,其谐波电流流入变压器一次侧,从变压器二次侧提取谐波电能。由于调谐电路中含有容性基波电流,要在变压器一次侧并联基波调谐电路,再将容性基波电流分流。重点对谐波提取电路进行了稳态特性分析,并利用Matlab进行仿真分析。仿真结果表明,该谐波提取电路实现了在不取用基波电能的情况下,提取电网谐波电能。
The harmonic pollution of domestic coal mine power system becomes increasingly serious, proposes one method that the filter circuit and three phase transformer in series and combined with harmonic phase sequence characteristics that extracts power harmonic energy. The tuning circuit is made up of filter circuits and three phase transformers in series. The harmonica current flows into one side of transformer and extracs the harmonic energy from the other side of transformer. Due to the capacitive fundamental current in the tuning circuits, it should be paralleled at one side of the transformer and then bypass capacitive current of the filter circuit. Analyzes the stable characteristics of harmonic extraction circuits in details and simulates through Matlab. The simulates result shows that this harmonic extraction circuit can extracts the harmonic power without fundamental power.
出处
《煤矿机电》
2014年第5期33-38,共6页
Colliery Mechanical & Electrical Technology
关键词
谐波相序
谐波电能
谐波提取电路
harmonic phase sequence
harmonic energy
harmonic extraction circuit