Active Power Filter for Harmonic Mitigation in a Distributed Power Generation System

Considerable increase in distributed power generation system (DPGS) has been marked in the literature during the last few years. Some DPGS are interconnected with its corresponding load to from a micro grid where most of the loads are fed from renewable sources. Power quality has dragged the attention of many power system engineers as it affects the performance of generation, transmission, distribution utilities. Generation of harmonics at the point of common coupling is a serious issue as it affects the performance of other loads connected to the same point of coupling. Production of harmonics due to various sources must be limited to its standard value for improvement of power quality. This paper will describe about the concept of active power filter for mitigating the harmonic produced at the point of common coupling. The experimental validation of a concept is carried out through MATLAB/SIMULINK model as it universally accepted. The performance of the system is realised based on total harmonic distortion, power factor level of improvement and cost wise reduction which correspond to the annual saving from consumer side as well as the generation side.