Hydrogen-Centered Integrated Multi-Energy System for Future High-Speed Railway Traction Substations: Modeling, System Performance, and Integrated Matching

Abstract

As the economy and society continue to evolve, the role of energy in driving overall development becomes increasingly evident. Traditional fossil fuels no longer align with sustainable development strategies, especially in the context of dual-carbon initiatives. Consequently, there is a growing global focus on researching new energy systems, particularly those centered around hydrogen energy. The integrated multi-energy system, with hydrogen energy at its core, is poised to become the primary future energy system for traction substations in high-speed railway systems, thanks to its significant role in promoting low-carbon development. This study proposes implementing an integrated multi-energy system with hydrogen as the core element to support the construction of such innovative traction substations. It also recommends establishing a system model encompassing wind power generation, photovoltaic power generation, electrolytic hydrogen generation, hydrogen storage, and other relevant subsystems. Furthermore, the study involves conducting numerical simulations of the operating characteristics of these subsystems and the integrated system using MATLAB/Simulink. The study utilizes the maximum power tracking control method to manage the maximum power output of the wind power and photovoltaic systems. Furthermore, it details the analysis and adjustment of the Monte Carlo stochastic simulation’s internal equipment to accurately reflect the operation of wind turbines and photovoltaic systems, with practical engineering implications. Lastly, the study employs an optimization algorithm to determine this system’s wind and solar volume ratio, aiming to achieve an economically viable configuration scheme.