Value assessment model of battery energy storage system in distribution network

The economic value of BESS(Battery Energy Storage System) in distribution network are comprehensively analyzed based on the typical daily load curve in five aspects:decrease of grid expansion capacity,reduction of total net loss cost by peak load shifting,arbitrage of energy storage,increase of grid reliability benefit,and reduction of capacity reserve for grid-connection of renewable energy resource.The optimal value assessment model of BESS,which considers the investment and maintenance costs and takes the annual net income as its objective,is established and solved by the particle swarm optimization algorithm combined with the multi-SUMT function.Case analysis shows that,due to the unit cost of battery is high at present,the economy of BESS is poor.