Abstract: A large number of distributed power sources are connected to the distribution station area, which will cause significant changes in the grid structure and the direction of power flow in the distribution station area. Therefore, a comprehensive assessment of the distribution station area is required. It provides theoretical support for optimizing the energy structure of the distribution station area, improving energy utilization efficiency, promoting energy conservation and emission reduction, and formulating power consumption measures. This paper focuses on the state estimation and comprehensive evaluation of high permeability distributed power station operation. It is ensured that the accuracy of state estimation can still be ensured to a high level in the case of errors in line parameters. The comprehensive evaluation of the status is to comprehensively evaluate the performance of the distribution station area from the perspective of the grid performance and photovoltaic absorption capacity of the distribution station area. It provides a reference basis for reasonable point selection and capacity determination for distributed power supply access to the distribution station area.