Multi-energy combined supply system constructed based on hydrogen energy storage

The utility model relates to a multi-energy combined supply system constructed based on hydrogen energy storage, which is characterized in that hydrogen is prepared by utilizing energy of a wind power plant and/or a photovoltaic power station of a green electricity base through a water electrolysis device, and the prepared hydrogen and oxygen are fed into a gas engine and are converted into heat energy through a combustion chemical reaction to form a high-temperature and high-pressure combustion product to push a turbine to do work; the turbine converts generated airflow energy into mechanical energy to push the generator to operate to generate electric energy for power supply, part of steam generated by the gas engine exchanges heat with normal-temperature water through the heat exchange unit to generate high-temperature water for heat supply, part of the steam can be directly used for steam supply, and the other part of the steam enters the absorption refrigeration equipment to generate low-temperature wate