With the continuous increase in the penetration rate of new energy and the integration of a large number of power electronic devices, the power system is gradually showing a trend of decreasing inertia and weakening system strength, making it difficult for devices such as grid tied wind turbines to maintain grid connection in some cases. The energy storage system has the ability to establish and support voltage, which can effectively solve the problem of difficulty in integrating new energy into weak grids. This article establishes an active inertia support control strategy for energy storage inverters based on virtual synchronous machines. Multiple energy storage methods are flexibly called according to the system’s operating status, and inertia support is provided to the system by adjusting the virtual rotational inertia. And from the perspective of cost and benefit, an optimization configuration model for the comprehensive benefits improvement of high proportion new energy base grid connected systems by energy storage considering frequency safety and stability constraints was established. The Markov chain Monte Carlo simulation method was used to generate the output time series, and the k-means clustering method was used to construct typical scenarios on a daily basis. Finally, a case study analysis is conducted on the classic scene system.