ORIGINAL RESEARCH article
Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 13 - 2025 | doi: 10.3389/fenrg.2025.1695588
This article is part of the Research TopicAdvanced Modeling and Methods for Renewable-dominated Power Systems Operations under Multiple UncertaintiesView all 16 articles
Optimization of Electric-Hydrogen Coupling System in Chemical Park Considering Refined Modelling of Coupling Equipment
Provisionally accepted
- State Key Shanxi Joint Laboratory of Coal-based Solid Waste Resource Utilization and Green Development, Taiyuan University of Technology, Taiyuan, China
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The accelerated development of renewable energy sources has confronted substantial challenges, primarily attributable to their intermittency and uncertainty. Consequently, the integration of green electricity has become a pressing concern. Hydrogen production from water electrolyzer has emerged as a key method for promoting local wind and solar energy consumption. However, extant studies tend to neglect the value of hydrogen as a chemical feedstock and rely on simplified linear models to describe the characteristics of electro-hydrogen coupling devices. This has resulted in discrepancies between optimization decisions and actual operational performance. To address this gap, the present paper employs a nonlinear semi-empirical model with a focus on electrolyzer and fuel cell. It describes the energy conversion between electricity and hydrogen more accurately based on electrochemical mechanisms. On this basis, considering the dual value of hydrogen energy as both "energy carrier" and "chemical raw material", the operation optimization model of electric-hydrogen coupling system for chemical parks is established. Furthermore, a convexification method for coupling device constraints is proposed to enhance solution efficiency. The findings of the study demonstrate that the semi-empirical model provides a more accurate representation of actual equipment performance, thereby preventing deviations between real-world operation and outcomes derived from optimization. Furthermore, the collaborative optimization strategy that ac-counts for hydrogen's dual value has been shown to significantly improve the system's economic benefits.
Keywords: Renewable Energy, water electrolysis, model convexification, electricity-hydrogencoupling system, Hydrogen utilization
Received: 30 Aug 2025; Accepted: 15 Sep 2025.
Copyright: © 2025 Tao, XUE, Du, Fan and Chang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: YIXUN XUE, xueyixun@tyut.edu.cn
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