Cost Allocation of Energy Storage based on Cost Causation and Cooperative Game

A complex problem in the new power system is the uncertainty and variability of renewable energy resources. With the rapid development of user-side distributed generation technology, it has become an important development trend to improve the reliability and economy of community energy use by configuring energy storage. This paper studies the energy storage sharing model of multi-agent cooperative investment in community. To maximize the economic benefit and fairness, this paper considers the ES cost allocation via cost causation and coalition game. Based on the principle of cost causation, this paper improves the traditional Shapley value model. Cost causation is a commonly used principle for considering fairness and has a long tradition in power system. We applied the improved Shapley value method to equitably distribute the energy storage costs among the main bodies of communities. The fairness and computational efficiency of the method were proved by the case study. The improved Shapley model reduced the computation amount and ensured the fairness versus the exponential information required by Shapley model.