Abstract—In this paper, the main impact of harmonics current of PV generation on smart distribution network a fter it is connected with the latter is indicated, and the reasons for the impact are analyzed. The methods of system harmonic suppression is summarized, three methods of PV power system based on active power filter, reactive power filter and combined system of static var compensator and active power filter are studied separately. Finally, according to the development of smart distribution network and application research on PV generation, the existing problems of the PV grid-connected system with harmonic suppression function are pointed out and its study direction in the future is also looked ahead.

Index Terms—APF, combined compensation, grid connected, harmonic suppression, photovoltaic generation, smart distribution network.

Lifeng Zhu is with the Shandong Electric Power Group Corporation, J ining, China. (e-mail: jngdfz@163.com).
Shuxi Xu, Zijia Ding, Lijun Qin and Feng Jiao are with North China Electric Power University, Beijing, China. (e-mail: jiao3395@sohu.com).