An object of the present disclosure is to provide a self-contained hydrogen power system for a smart farm, wherein hydrogen is produced through a water electrolysis device without external power by using sunlight and water received from a coast and a river, the produced hydrogen is produced as energy through a fuel cell, and the produced energy is stored in a battery or power is supplied to the controller of a smart farm in order to produce aquatic products.

In an aspect, a system for managing a smart farm includes a self-contained hydrogen generation unit configured to purify intake-water, generate clean hydrogen through water electrolysis, generate energy through a fuel cell by using the generated clean hydrogen, and store the energy, and a farm environment control unit configured to receive, from the self-contained hydrogen generation unit, energy for driving a plurality of sensors and devices for producing aquatic products and control a smart farm environment for producing aquatic products.

The self-contained hydrogen generation unit includes a water-intake and high-level water purification unit configured to retain the intake-water in a water reserve tank and perform water treatment on the intake-water by removing precipitates, a solar water electrolysis unit configured to receive the purified water, generate hydrogen through water electrolysis by using energy generated by a sunlight collector, and then purify and store the generated hydrogen, and an energy production and storage unit configured to receive the stored hydrogen, generate energy through the fuel cell by using the energy generated by the sunlight collector, and store the produced energy in an energy storage device, wherein the stored energy is also used to supply power to a solar water electrolysis unit.