Distributed photovoltaic grid-connected control system and method based on transformer area intelligent fusion terminal

The invention relates to a distributed photovoltaic grid-connected control system and method based on a transformer area intelligent fusion terminal, and belongs to the technical field of new energy power generation system control. The technical scheme is as follows: for a large-scale single-phase distributed photovoltaic access low-voltage power distribution network, an intelligent fusion terminal periodically acquires three-phase current of a distribution transformer outgoing line in a transformer area and grid-connected current of an inverter, and realizes commutation control and output control of single-phase grid-connected photovoltaic by utilizing the edge calculation capability of the intelligent fusion terminal; a PCS module and a battery cabinet are combined to further independently adjust and control ABC three-phase power, and effective control over the three-phase imbalance problem of the low-voltage transformer area is achieved. According to the invention, on the premise of guaranteeing the power