Refined planning has become the key point to improve the benefit of power grid enterprises under the background of new electricity reform. Thus

in this paper

a set of ideas and methods are proposed for the medium voltage distribution network planning based on the mesh optimization generation. Firstly

a trunk route layout is determined in order to ensure the land resource reservation. Then

based on the definite objective and principle of mesh generation

the mesh optimization generation is performed in the global region by using the closest standby substations and clustering of loads. Finally

the line connection mode

construction and reconstruction standards inside each mesh are selected according to the corresponding power supply area classification

and also the trunk line routing is found based on the corresponding optimization approaches. Regarding the transition years' planning

subareas are selected in principle to be reconstructed one by one to avoid repeated work and easy for construction and reconstruction. In the proposed methods

the network planning of a global region is transformed to the network planning of much smaller meshes with the overall region planning ideas of technical feasibility and economic optimality being followed

and a basically consistent mesh scheme for different planners can be obtained

resulting in the enhancement of planning result's rationality and uniqueness. The method also has the reference value for the revision and refinement of related guidelines to a certain degree. This method has been applied in practice.