Fine simulation modeling method and system for medium and low voltage power grid

The invention discloses a refined simulation modeling method and system for a medium and low voltage power grid, and belongs to the technical field of power grid simulation, and the method comprises the steps: carrying out the situation awareness of the medium and low voltage power grid, analyzing the change condition and trend of the load of a power distribution network, predicting the future load demand and power grid capacity, and carrying out the preliminary simulation modeling of the medium and low voltage power distribution network; according to the preliminary simulation modeling result, deducing a power distribution network fault of the medium and low voltage power grid, and performing primary optimization on the medium and low voltage power grid; according to a primary optimization result, performing optimization configuration on an energy storage system of the medium and low voltage power grid, performing secondary optimization on the medium and low voltage power grid, and realizing refined simulati