The city power grid is an important level in the management requirements of "four-level connection and multi-level responsibility" of the national power grid.Its development level supports the provincial power grid and covers the district and county power grids

which is a key link in the construction of the whole power grid.At the same time

the city power grid is closely related to the development of the city and promotes each other.Taking Langfang Power Grid as the research object

starting from the characteristics of medium-level city power grids

by collecting basic operation data and building an index system with comprehensive diagnostic function

the objective and accurate diagnostic evaluation results can be ensured to the greatest extent.Finally

based on the diagnosis and analysis results of the development level of Langfang power grid

scientific and reasonable opinions on power grid planning and construction are put forward.