Electric vehicle charging control method and system considering load balance

The invention relates to the technical field of power dispatching, and provides an electric vehicle charging control method and system considering load balance, and the method comprises the following steps: collecting transformer area basic historical load data and transformer area photovoltaic historical output data; calculating a transformer area basic source load curve, and dividing the transformer area basic source load curve into n time control intervals with equal time intervals; calculating the maximum load of any time control interval; setting a load threshold value after the charging load of the electric vehicle is accessed, and calculating an allowable charging load of the electric vehicle based on the load threshold value and the maximum load of any time control interval; and according to the allowable charging load of the electric vehicle, the charging power of the electric vehicle in the corresponding time interval is controlled. According to the method, the charging load of the electric vehicle