Life cycle economic benefit evaluation based on user-side shared energy storage

At present， energy storage is characterized by its high investment cost and indefinite income that hinders its large-scale promotion on the user side. It has now become a problem that demands prompt investigation to lower investment costs and increase profits. Firstly， the equipment structure of user-side shared energy storage is proposed， and load behaviors of users are analyzed and users are divided into four kinds. Secondly， peak-valley arbitrage income， capacity reduction income of transformers， investment cost， and operation cost are quantified. The dynamic return on investment period is used as the evaluation index to establish the life cycle economic benefit evaluation model based on user-side shared energy storage. To maximize peak-valley arbitrage income on a typical day， an optimal dispatching model of user-side shared energy storage is constructed to optimize the charging and discharging strategy of energy storage. Finally， a user in an industrial park is taken as an example to comprehensively analyze the investment benefits of a user-participated shared energy storage scheme from the perspective of economy and safety. The research results are of certain guiding significance to the present energy storage commercialization and application.