Simulation calculation method and system for power distribution network gridding based on geographic information system

The invention discloses a power distribution network gridding simulation calculation method based on a geographic information system, and the method comprises the following steps: 1, analyzing the basic data of a power distribution network, generating a gridding scene, and determining the operation condition and value range of a specific node in the power distribution network; 2, after the gridding scenes are obtained, a parameter calculation model is established, parameters of all the gridding scenes under different operation conditions are calculated, and a multi-dimensional vector data set is generated according to node parameters obtained through calculation; step 3, establishing a relation graph with the power distribution network according to the generated multi-dimensional vector data set, and obtaining an optimal simulation calculation result under the current divided grid; and 4, limiting the value range of the operation condition according to the obtained optimal policy calculation result, carrying