Intelligent management of battery system for energy arbitrage

The demand for renewable energy sources has increased interest in storage systems, more specifically batteries. Due to their interesting characteristics, such as rapid response and decreasing price, the batteries can be used in various scenarios in the electrical system. Among them, one can highlight the profit from the purchase and sale of electricity. The objective of this work is to evaluate the battery operation employing a fuzzy system that helps on energy arbitrage. The fuzzy system is used as an automatic decision maker for buying or storing energy in the real-time operation of the system. The proposed fuzzy system is evaluated under two strategies varying the membership functions in order to achieve the highest profit. The results are promising, considering the profits obtained by the proposed fuzzy system well above of strategies based only on a comparison with median electricity market price.