摘要
研究了中低压电网中由非线性负载产生谐波的机理 ,提出所有由非线性负载直接引起的谐波是电流谐波 ,因而治理非线性负载引起的谐波应首先考虑治理谐波电流。同时 ,从补偿和滤波两种思想出发 ,指出并联型谐波补偿有源电力滤波器 (APF)的补偿作用和串联型基波补偿APF的滤波作用可适用于非线性负载谐波电流的抑制。
The mechanism of harmonic caused by nonlinear loads in power systems with medium or low voltage is analyzed. It is put forward that the harmonic directly caused by nonlinear loads is current harmonic, which should be suppressed firstly rather than harmonic voltage. From the idea of compensation and filtering, the parallel compensating harmonic APF and series compensating fundamental wave APF are suitable for suppressing harmonic current. The correctness of the analysis is verified by simulation results.
出处
《电力系统自动化》
EI
CSCD
北大核心
2003年第20期31-34,共4页
Automation of Electric Power Systems
关键词
有源电力滤波器
非线性负载
谐波特性
补偿特性
滤波特性
Computer simulation
Electric loads
Equivalent circuits
Harmonic analysis
Nonlinear systems
