Power distribution system planning method and device and storage medium

The invention provides a power distribution system planning method and device and a storage medium, relates to the technical field of electric power, and can reasonably plan a power distribution system of a data center. The method comprises the following steps: determining an equipment updating factor and an electrical load growth factor of the data center; wherein the equipment updating factor is used for representing a relationship between an updating period of information technology IT equipment and an updating period of a power distribution system; the electrical load growth factor is used for representing an electrical load growth proportion after the IT equipment is updated; determining a capacity coefficient of the power distribution system according to the equipment updating factor and the electrical load growth factor; and determining the planned capacity of the power distribution system according to the capacity coefficient of the power distribution system and the current power demand of the data ce