Optimal coordination on wind-pumped-hydro operation

Abstract

This paper addresses an integrated approach for finding the optimal scheduling and operation of a pumped-hydro system with a wind farm. The approach is characterized not only by modeling the technical operating constraints of the coordinated system, but also for lessening the variations on the active power output coming from the intermittence variability of the wind energy resource. Profitability of a pumped-hydro system tends to take place when generators operate at high prices and pump at low prices in order to capture this tendency an optimization problem should be considered. This paper presents a mixed-integer linear optimization-based approach to maximize profit, allowing profitable participation of a pumped-hydro system with a wind farm in a day-ahead market. Numerical results based on a case study are presented to prove the effectiveness of the proposed approach. Finally, conclusions are drawn.