Proven energy storage system applications for power systems stability and transition issues

Abstract Energy storage system (ESS) is one of the potential solutions for some grid applications and circumstances, specifically in the transmission and distribution networks. The increasing share of nonsynchronous generation has resulted in a rising number of issues in the grid. Transmission congestion, energy balancing needs, frequency regulation, voltage limit violation, and overload of network operating resources are some of the challenges induced by renewable generation units. Electric vehicles will pose lots of problem to the grid due to their high need for large power capacity. The main purpose of this present work is to analyze and evaluate the hybridization of proven ESSs for the delivery of digital inertia in the power grid following grid disturbances. The main directions of this chapter are to (1) assess proven energy storage for grid support stability; (2) draw special attention to grid functions relevant for ESSs; (3) highlight energy storage characterization for digital inertia and hybridized scheme; (4) implement a generic transmission model of the Danish TSO Energinet.dk, with a large wind farm to investigate some specific application of proven ESSs. The SVC unit is used and applied to improve the voltage profile in the on-land connection point of the large offshore wind farm; and (5) the future implications of a hybridized scheme to resolve transition issues to operate at large system nonsynchronous penetration.