Optimized deployment of storage systems for integration of distributed generation in Smart Grids

Due to an increasing share of distributed generation and recently emerging options in smart grid planning, distribution system operators (DSOs) are confronted with new challenges. Especially storage systems are frequently discussed in a smart grid context due their high flexibility. However, holistic analyses of energy storage together with traditional expansion measures are still rare. This paper addresses the optimal integration of storage systems into the planning process of smart grids. An algorithm for siting and sizing of storage systems and new overhead lines or cables is presented. The exemplary application of the algorithm proves the need for an integrated analysis of storage systems together with other expansion technologies and illustrates an economic advantage for independently operated storage systems in multifunctional operation in comparison to DSO-controlled energy storages providing only grid support.