Feasibility study on energy storage replacing external power supply based on sequential operating simulation method

In recent years, China's energy storage industry has shown a good development trend, especially the electrochemical energy storage performance continues to improve, and the cost continues to decline. According to the analysis and prediction of authoritative organizations, the cost of electrochemical energy storage will continue to decline rapidly in the future, and the cycle life of batteries will gradually increase. It is possible to commercialize large-scale electrochemical energy storage. Considering the constraints of energy resources and transportation conditions in Jiangsu Province, as well as the constraints of environmental capacity on the development of local power supply, regional external electricity has become an important power supply in Jiangsu Province. This paper considers the development of large-scale energy storage and substitutes for a DC transmission system and analyses its operation. Some research directions and preliminary theoretical calculation references for the possible application of large capacity energy storage in power system in the future are proposed. It provides the necessary basis for provincial power grid to promote energy production and consumption revolution in the future, and explores the feasibility of further supporting the development and application of energy storage industry.