Benefit Assessment for Promoting Energy Storage into Inter-Provincial Power Trading from Grid's Side

With the large-scale integration of new energy sources, the demand for flexible regulation resources in the power system is becoming increasingly urgent. The distribution of resources varies among provinces in China, and inter-provincial electricity market transactions are an effective means to enhance the overall flexibility of the power grid. As a key resource, energy storage has significant application prospects in inter-provincial electricity market transactions. This paper focuses on the mechanism and value of energy storage participating in inter-provincial market dispatch, constructs an optimal dispatch model for regional power grids including thermal power, renewable energy, and energy storage, designs two scenarios of energy storage participating in and not participating in electricity markets, and proposes a systematic benefit assessment process to analyze the benefits of energy storage participation from multiple dimensions such as system operation costs, new energy consumption rates, and load guarantee capabilities. Simulation results show that energy storage participation in inter-provincial markets can significantly reduce system operation costs, improve the utilization efficiency of new energy, and enhance system regulation capabilities and operational safety. This study provides a reference basis for promoting energy storage participation in inter-provincial power transactions and is of great significance to the development of inter-provincial electricity markets.