Research on Photovoltaic Distributed Generation System on Gird by Single Phase Connection for Three-Phase Imbalance in Distribution System

The distributed generation system composed of intermittent energy such as photovoltaic power generation system can be arranged nearby to supplement the load power supply shortage. The photovoltaic power generation system is affected by the weather, and its integration into the grid will affect the power supply quality of the grid. A large number of single-phase loads in the distribution system cause three-phase imbalance. The controllable photovoltaic energy storage unit is used to connect to the grid in phases to follow the changes of phase load. The PQ is used to control the split phase photovoltaic energy storage to keep the three-phase voltage and current balance at the beginning of transformer distribution, Improve the three-phase balance rate of distribution network. he abstract should summarize the contents of the paper in short terms, i.e. 150–250 words.