The Yunnan-Guizhou Plateau of China is mostly poor areas

and most of these areas are based on large power grids + small hydropower power supply grids

which are at the end of the distribution network

and does not meet the N-1 reliability configuration

the problem of voltage unqualified is very prominent. In this paper

the voltage quality problem of a rural power grid in the Yunnan-Guizhou Plateau is studied

and the problem of high and low voltage of power supply lines is explored in depth based on the actual operation of the local power grid

and the main influencing factors of the voltage rise and fall of distribution lines are analyzed. Based on this

in order to solve the problem of power supply voltage quality of rural power grid in this region

this paper proposes a method for establishing a small microgrid + energy storage in combination with the current situation of the local power grid

and with the help of Matlab/Simulink simulation software

a simulation analysis model of rural distribution network is established

which is further verified

and the feasibility of the solution proposed in this paper is verified through simulation analysis

which provides certain theoretical support for enhancing the power supply capacity of the local power grid and improving the reliability of power supply.