Photovoltaic scale access-oriented power distribution network voltage scheduling system and method thereof

The invention belongs to the field of power grid dispatching, and particularly relates to a photovoltaic-scale access-oriented power distribution network voltage dispatching system and a photovoltaic-scale access-oriented power distribution network voltage dispatching method. The system comprises a photovoltaic generating capacity prediction subsystem which collects the generating capacity and meteorological data of each distributed photovoltaic in real time, and estimates to obtain a photovoltaic generating prediction value in a future time period; the electric vehicle charging load prediction subsystem is used for acquiring the load capacity of each electric vehicle charging station and the load capacity and behavior data of the electric vehicle in real time, and estimating to obtain a charging load prediction value in a future time period; the power distribution network voltage analysis subsystem performs correlation analysis according to the photovoltaic power generation prediction value and the charging