Zhang_2023_IEEE_IES_H2.pdf (780.21 kB)

Multi-timescale Power System Operations for Electrolytic Hydrogen Generation in Integrated Nuclear-Renewable Energy Systems

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posted on 2023-07-30, 13:57 authored by Jubeyer RahmanJubeyer Rahman, Roshni Jacob, Jie ZhangJie Zhang

This study explores how sector coupling via In- tegrated energy systems (IES) can improve the operational flexibility of the power grid, while hydrogen is gaining traction as a versatile energy carrier. Specifically, we have evaluated the operational benefits of integrating two electrolytic processes for hydrogen generation, namely low-temperature electrolysis (LTE) and high-temperature steam electrolysis (HTSE), into a nuclear- renewable IES using a 3-cycle power system operation frame- work. Detailed steady-state models of the electrolytic hydrogen generating facilities are constructed, with the HTSE process represented using standard transient models to account for the steam-bypass scheme from the nuclear reactor. These models are then integrated into a renewable-intensive power network model (specifically, the NREL 118-bus system). To simulate the operation of the integrated system across multiple timescales, a multi-timescale scheduling and dispatch tool is employed. Results indicate that while both electrolytic processes contribute to signif- icant flexibility enhancement and renewable energy curtailment reduction, the LTE process offers more operational benefits than the HTSE process across multiple timescales. 


Email Address of Submitting Author

Submitting Author's Institution

University of Texas at Dallas

Submitting Author's Country

  • United States of America