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With the development of distributed generation and Microgrid technology, the structure and load of microgrid system will become more and more complex, and the probability of power quality problems such as harmonics, voltage fluctuation and flicker will be higher and higher. In this paper, the problem is studied. According to the development rule of international flexible transmission, a power quality control method based on active power filter is proposed. The simulation results show that the advanced correction in this paper is feasible, and it effectively improves the power quality of grid-connected microgrid.

Research on power quality control of grid-connected microgrid based on distributed generation