Robust multi-objective optimization for the Iranian electricity market considering green hydrogen and analyzing the performance of different demand response programs

• Published in: Applied energy 2023-03, Vol.334, p.120737, Article 120737
• Main Authors: Khalili, Reza, Khaledi, Arian, Marzband, Mousa, Nematollahi, Amin Foroughi, Vahidi, Behrooz, Siano, Pierluigi
• Format: Article
• Language: English
• Subjects: Demand response; Electricity market; Green hydrogen; Robust optimization
• ISSN: 0306-2619
• DOI: 10.1016/j.apenergy.2023.120737

•Linearized multi-objective robust optimization.•Mathematical modeling for decision-making in newly established electricity markets.•Improving the upper approximation method for quadratic functions.•In non-robust and robust planning, retailer costs are reduced by 5.57 % and 5.32 %, respectively.•After robust optimization, the power consumed by the electrolyzer decreased by 14.19 %. Using renewable energy sources (RES) and green hydrogen has increased dramatically as one of the best solutions to global environmental issues. Applying demand response programs (DRPs) in this context could enhance the system’s efficiency. Evaluating different DRPs’ performances and assessing economic impacts on different parts of the electricity market is essential. The inherent uncertainty of RES and prices is inevitable in electricity markets. As a result of the lack of information, it is crucial to mitigate the risks as much as possible, such as risks related to changes in demand, unit outages, or other traders’ bid strategies. This research introduces a robust multi-objective optimization method to reach the most confident plan for the retailer based on uncertainty in RES and price. The integration of different DRPs is assessed according to the cost to retailers and benefits for consumers using a multi-objective model to survey the impacts of different parts’ decisions on each other. The trade-off among DRPs is considered in this model, and they are traded using a new model to illustrate the daily effect of these programs in monthly operations. This paper uses hydrogen storage (HS) integrated with PV as a distributed energy resource. As the Iranian electricity market has just been established, this research proposes a framework for decision-making in new electricity markets to join future smart energy systems. The mid-term pricing evaluates the system’s performance for more accurate monthly results. Also, the operation cost of the hydrogen storage is modeled to assess its performance in non-robust and robust scheduling. Mixed-integer linear programming (MILP) has been used to model this problem in GAMS. A developed linearizing method is considered with a controllable amount of errors to reduce the volume and time of the computation. Finally, the cost of consumers in non-robust and robust market planning in the presence of DRPs is reduced by 8.77 % and 9.66 %, respectively, and HS has a compelling performance in peak-shaving and load-shifting.