电力有源滤波器在谐波治理中的应用

随着现代电力电子技术的发展,各种交直流换流设备和开关型负荷的比重越来越大,带给系统的谐波污染也越来越大,严重影响到系统的安全和供电质量,因此无功补偿和谐波治理已成电力系统亟待解决的的问题。传统的交流滤波器已经不能很好的满足谐波治理的要求,电力有源滤波器(Active Power Filter,简称APF)的研究和应用应运而生,动态抑制谐波、补偿无功,可实现对大小和频率都变化的谐波以及变化的无功进行补偿。

Active Power Filter applied into the Harmonic Restrain of Power System

Along with the development of modern electric and electronic technology,various AC/DC converters,inverters and switching type load have been applied widely.Then the harmonic pollution has become serious more and more,the safety of power system and the quality of power supply has been threatened,therefore the reactive-load compensation and the harmonic restrain already has become a problem that should be solved in power system.As the demand of harmonic restrain could be met well by the traditional AC filter,the research and application of active power filter(APF) have been developed quickly,which can restrain harmonic dynamically,compensate reactive power and also compensate the harmonic that level and frequency of which are changing and the reactive power that it is changing.