Energy management of wind-PV-storage-grid based large electricity consumer using robust optimization technique. (February 2020) - Yu, Dongmin
Highlights: Renewable generation-based energy procurement of large electricity consumer is studied. Large consumer participates in demand response program to reduce procurement cost. Risk-neutral strategy is obtained with deterministic approach without uncertainty modeling. Robust optimization approach is proposed to model the pool market price uncertainty. Risk-averse strategy as robust operation is obtained via robust optimization approach. Abstract: Large electricity consumers (LEC) can purchase energy from various energy resources such as bilateral contracts, pool market, micro-turbines, battery storage systems, wind turbines, photovoltaic panels (PV). The uncertainty of market price leads to uncertainty in the total cost to the LEC. Therefore, in this article, the robust optimization (RO) technique is provided to investigate the uncertainty of the pool market price in the presented problem. Also, demand response program (DRP) is provided to decrease the purchased cost to the LEC as much as possible. According to the obtained results, without considering DRP, purchased cost is approximately $40, 253.252 and $42, 586.984, respectively in the risk-neutral strategy (ideal condition) and robust strategy (worst condition). Furthermore, the purchased cost is reduced nearly $36, 945.362 and $39, 789.267 in the risk-neutral and robust strategies with considering DRP. So, it can be concluded that the purchased cost to the LEC with considering DRP is reduced 8.2% and 6.5% in risk-neutral and robust strategies, respectively.