Aiming at the problem of coordination of source

network and load in planning area where the permeability of distributed generator varies from low to high at different stages of development

a dynamic expansion planning method for substation with distributed generator penetration is proposed. Firstly

considering the rolling input effect and the residual value difference of substation during the planning period

a dynamic expansion planning model for substation with distributed generator permeability is established. Secondly

considering load balance and the influence of distributed generator capacity on the power supply division of substation

the penalty function

convexity and direction improvement methods of weighted Voronoi diagram algorithm are achieved. Thirdly

the substation dynamic expansion planning method of active distribution network based on genetic algorithm and heuristic algorithm is proposed

and the construction sequence of active distribution network substation is obtained. Finally

an example is given to illustrate the scientific and practicality of the method.