NOVELTY - Generation power system comprises biogas preparation subsystem, methanol preparation subsystem, hydrogen preparation subsystem and hydrogen power generation subsystem; biogas preparation subsystem used for fermenting organics in biomass as raw material with methane bacteria to generate biogas under air isolation; and methanol preparation subsystem connected with a biogas outlet of preparation subsystem to extract methane from generated biogas after pressurized, and methane oxidized to generate methanol.    USE - Generation power system.    DETAILED DESCRIPTION - Generation power system comprises biogas preparation subsystem, methanol preparation subsystem, hydrogen preparation subsystem and hydrogen power generation subsystem; biogas preparation subsystem used for fermenting organics in biomass as raw material with methane bacteria to generate biogas under air isolation; and methanol preparation subsystem connected with a biogas outlet of preparation subsystem to extract methane from generated biogas after pressurized, and methane oxidized to generate methanol. The extraction of methane by the methanol preparation subsystem comprises washing bio gas by soda lime to remove hydrogen sulfide and carbon dioxide; removing ammonia gas in bio gas by concentrated sulfuric acid; and preparing biogas into high-purity methane by low temperature volatilization process. The oxidation of methane comprises mixing methane and oxygen at a volume ratio of 8-9:1-2, and obtaining methanol at 150-220 degrees C under 80-125 Pa by copper pipe reaction. The hydrogen preparation subsystem is connected with methanol outlet of methanol preparation subsystem to mix generated methanol and water, and obtaining hydrogen. The preparation of hydrogen by hydrogen preparation subsystem comprises conveying methane and water to heat exchanger for heat exchange by pump, gasifying in gasifying chamber after being subjected to heat exchange; enabling gasified methane steam and vapor to enter into reforming chamber, providing catalyst in reforming chamber at 370-409 degrees C; providing preheating temperature control mechanism between reforming chamber and separation chamber for heating gas in reforming chamber; serving preheating temperature control mechanism as buffer between reforming chamber and separation chamber, shortening temperature difference between temperature of output gas of the reforming chamber and temperature of separating chamber, and enabling temperature of gas output by reforming chamber to be identical or close to temperature of separation chamber; and providing temperature of separation chamber at 400-450 degrees C, enabling temperature of separation chamber to be higher than reforming chamber, providing palladium membrane separator in separation chamber, obtaining hydrogen from gas generation end of palladium membrane separation, and connecting hydrogen generation subsystem with hydrogen outlet of hydrogen preparation subsystem to generate by generated hydrogen.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the generation power system.