谐波治理的研究进展

Study on Development of Harmonic Elimination

随着电力电子装置的广泛应用,电力系统的谐波污染日益严重。传统的谐波抑制与无功补偿方法是采用基于谐振原理的无源滤波器,但这样只能滤除设定次数的谐波,且易与电网产生串、并联谐振。而有源滤波器由于具有高度可控性和快速响应性,能对频率和幅值都变化的谐波进行跟踪补偿,因而受到广泛的重视,成为目前国内外供电系统谐波抑制研究的热点。探讨了谐波治理的主要措施,介绍了有源滤波器研究的国内外现状,最后展望了有源滤波器研究的未来方向。

With the development of power electronical equipment, harmonic pollution of power system is more and more serious traditional method for harmonic elimination and reactive power compensation is the LC power filter based on resonance principle, but this method can only eliminate the specified order harmonic, and probably cause parallel or series resonance with the power system. Due to the high controlling and quick response, active power filter has been paid more attention for eliminating harmonic with magnitude and phase varying. This paper discusses the main approaches for harmonic damping, proposes the study development of active power filter, and gives some forecasting on the study of active power filter.