Optimal Sizing and Location of Energy Storage System in a Power System

This paper presents a methodology for determining the optimal size and location of Vanadium Redox Flow Battery (VRFB) which supplies load frequency control in electrical power systems. The objective is to achieve the optimal investment for installing a VRFB while considering its impact on the power system. Through stochastic optimization, the proposed methodology allows computing the variable operative costs and VRFB investment costs. To achieve this, a primal-dual interior point algorithm embedded in a meta-heuristic algorithm within an exhaustive search is used. In order to analyse the influence of the VRFB on frequency quality of the power system, statistical index is proposed such as the new factor used in dimensioning the secondary reserve.