Method and device for determining position of transformer substation and transformer substation site selection system

The invention provides a method and device for determining the position of a transformer substation and a transformer substation site selection system. The method comprises the steps that a grid chart is obtained, and the grid chart is obtained by conducting grid division on an area needing power supply; power supply information is obtained, and the power supply information is information of the required load and the required distance of the line in the grid chart; a first model is constructed, the first model is obtained by training through a DBSCAN algorithm by using multiple groups of training data, each group of training data in the multiple groups of training data comprises historical power supply information acquired in a historical time period and a historical first result corresponding to the historical power supply information, and the historical power supply information is acquired in the historical time period; the central position of the historical first result is the first historical position of