| 摘要 |
A water electrolysis system includes a water electrolysis apparatus, a gas-liquid separating apparatus, a hydrogen supply line, a water level detector, and a current regulator. The water electrolysis apparatus is to electrolyze water to generate oxygen and high-pressure hydrogen having a higher pressure than a pressure of the oxygen. The gas-liquid separating apparatus is disposed upstream of the water electrolysis apparatus in a gravitational direction to separate moisture contained in the high-pressure hydrogen. The hydrogen supply line is to supply the high-pressure hydrogen discharged from the water electrolysis apparatus to the gas-liquid separating apparatus. The water level detector is configured to detect a water level in the gas-liquid separating apparatus. The current regulator is configured to regulate a current to be applied to the water electrolysis apparatus based on the water level detected by the water level detector in the gas-liquid separating apparatus.
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