Off-network household hydrogen energy system design method and device

The invention provides an off-grid household hydrogen energy system design method and device. The method comprises the steps that a household terminal energy system structure based on coupling of distributed energy such as wind and light and a hydrogen energy storage system and a mathematical model of main equipment in the system are constructed; on the basis of typical household load demand prediction, the off-grid household hydrogen energy system model is established by taking the minimum net present total cost as the target and considering the power balance constraint, the equipment operation constraint, the hydrogen energy storage system constraint, the load missing rate constraint and the like. Distributed energy and a hydrogen energy system are combined, so that household energy can get rid of the constraint of power supply of a power grid, the problem of power failure caused by insufficient power of the power grid is avoided, dynamic balance between wind and light output and load requirements is ensure