Coupling system based on multi-energy combined supply of hydrogen energy, control method and device thereof and medium

The invention discloses a coupling system based on multi-energy combined supply of hydrogen energy, a control method and device of the coupling system and a medium, and the coupling system comprises an alternating current bus, and a renewable energy power generation system, an energy storage system, a power grid power supply system, a fuel cell system, a hydrogen production system and a power utilization system which are connected with the alternating current bus, the renewable energy power generation system and the power grid power supply system provide electric energy for the power utilization system, the energy storage system is used for adjusting load balance of a power supply side and a power utilization side, and the hydrogen production system is used for preparing hydrogen according to residual electric energy of the power supply side and the power utilization side. And the fuel cell system is used for generating power by adopting hydrogen and providing electric energy supplement for the power utilizat