Evaluation of Reactive Power Capability by Optimal Control of Wind-Vanadium Redox Battery Stations in Electricity Market
DOI:
https://doi.org/10.24084/repqj09.583Abstract
Battery energy storage systems (BESSs) integrated with renewable energy resources are considered as necessary solutions for economical, technical and quality aspects. A BESS requires a power conditioning system (PCS) which permits both active and reactive power to be generated. In this paper, a wind-vanadium redox battery (W-VRB) station is considered as an independent power producer. The profit of this producer is maximized by solving a constrained dynamic optimization problem in a day-ahead electricity market depending on real-time electricity prices. Then, the reactive power compensation capability of this station for fulfilling the recent technical guidelines is estimated. A numerical case study is presented to illustrate the proposed method. It can be concluded that a large amount of reactive power can be achieved by an optimal operating strategy for the W-VRB station.