电源系统的谐波干扰分析与抑制技术

Harmonic Disturbance Analysis and Restrain Technology in Power System

谐波源分电流型和电压型2类。电流型的抑制采用滤波器分流,即通过滤波器电感和电容的谐振,形成低阻抗并为谐波电流提供通路,以降低进入电网中的谐波电流。而电压型谐波源的抑制则采用并联型滤波器分压,通过滤波器电感和电容的并联谐振,形成高阻抗,抑制降低电路中谐波电流在电网中所形成的谐波电压。2种谐波都可采用无源和有源滤波两种形式抑制。

Harmonic source is divided into current harmonic source and voltage harmonic source. The choke of current harmonic source employed electric filters to shunt, That is, the resonance of inductance and capacity which moved through the filter forms low-impedance, and provided ways for harmonic current, to slow down the harmonic current which entered the electric network. While the choke of voltage harmonic source used parallel filters. The parallel resonance of inductance and capacity produced high impedance and choked the harmonic voltage which forms when the harmonic current moved through the electric network. Two tvoes of harmonic waves both adopt active filters and positive filters to choke.