Abstract: Independent energy storage stations are in a stage of rapid development and face complex and diverse scenarios when connected to the power grid. This paper analyzes a case of the grid integration voltage level of an independent energy storage station in a wind rich region. Focusing on a county power grid characterized by abundant wind power and a relatively small load scale, the study systematically considers the actual conditions of regional source, grid, load, and energy storage. Based on power balance analysis and operation analysis under peak valley time of use electricity prices, and using indicators such as the annual number of charging and discharging cycles of the energy storage station and the main transformer loading rate under N − 1 contingencies, the grid integration voltage level of a 100 MW independent energy storage station is comprehensively analyzed from the perspectives of safety, economy, and power system development. This analysis can provide a reference for the grid integration system design of energy storage stations in similar cases.