基于微网有源滤波装置谐波检测与抑制的研究

由于微网能够改善分布式能源的利用效率，提供不间断的电源，近年来得到广泛的发展和应用。但是微网里含有大量的非线性元器件，在运行时产生大量的谐波，影响电力系统的安全稳定运行。为此，对微网的谐波检测与谐波抑制展开研究，利用基于瞬时无功功率理论的ip-iq检测法对谐波进行快速检测。同时，提出将无源滤波器与有源电力滤波器结合的方法对微网的谐波进行抑制。通过Matlab/Simulink搭建模型进行仿真验证可知，单一的无源滤波器不能满足滤波要求，而HAPF的谐波抑制方法具有较好的谐波抑制效果，验证了本文谐波抑制方法的有效性和可行性。

Harmonic Detection and Suppression of Active Filter Device Based on Microgrid

Because microgrid can improve the utilization efficiency of distributed energy resources and provide uninterrupted power supply， it has been widely developed and applied in recent years. However， the microgrid contains a large number of nonlinear components， producing a large number of harmonics during operation， and affecting the safe and stable operation of power system. Therefore， this paper makes a study on the harmonic detection and suppression of the microgrid， and uses ip-iq detection method based on instantaneous reactive power theory to detect the harmonic quickly. At the same time， the method to suppress the harmonics of the microgrid is proposed by combining passive filter with active power filter （HAPF）. In the end， the MATLAB/Simulink based simulation shows that a single passive filter does not meet the filtering requirements，while the harmonic suppression method of HAPF has a better effect on harmonic suppression， verifying the effectiveness and feasibility of the harmonic suppression method.