Pressure control method of hydrogen production system and hydrogen production system

Abstract

The invention discloses a pressure control method of a hydrogen production system and the hydrogen production system, and is applied to the technical field of hydrogen preparation, wherein the pressure control method comprises the steps: after acquiring a parameter value variable quantity of a target electrical parameter and a pressure difference value between a current system pressure and a preset pressure threshold value, determining a first regulating quantity according to the parameter value variable quantity; and determining a target regulating quantity based on the first regulating quantity and the pressure difference value, and finally regulating the system pressure of the hydrogen production system according to the target regulating quantity. The target electrical parameter is related to the hydrogen production power of the hydrogen production system, the system pressure of the hydrogen production system can be directly influenced by the hydrogen production power fluctuation, and the pressure change occurs after the hydrogen production power fluctuation, so that the regulating quantity can be determined in advance before the hydrogen production power finally influences the change of the system pressure, the pressure control efficiency is effectively improved, the energy consumption is reduced, and the control effect is improved.

Description

technical field [0001] The invention relates to the technical field of hydrogen production, in particular to a pressure control method of a hydrogen production system and the hydrogen production system. Background technique [0002] see figure 1 , figure 1 A structural block diagram of a water electrolysis hydrogen production system is shown. In the hydrogen production system, the hydrogen production power supply is connected to the hydrogen production device, and the hydrogen production power is output to the hydrogen production device for the hydrogen production device to perform hydrogen production operations. The hydrogen separator outputs the electrolyte containing hydrogen, which is separated and processed by the hydrogen separator to obtain hydrogen. At the same time, the hydrogen production device outputs the electrolyte containing oxygen to the oxygen separator, which is separated and processed by the oxygen separator to obtain oxygen. The electrolyte after separa...

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Problems solved by technology

[0004] The inventor found that the pressure balance control method in the prior art belongs to passive control. From the detection of the system pressure, to the final determination of the adjustment amount and the adjustment of the valve opening, until the system pressure is controlled within the safe range, the whole process consumes Too long, poor pressure control effect

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