Modularized water electrolysis hydrogen production system and control method thereof

Abstract

The invention particularly relates to a modularized water electrolysis hydrogen production system and a control method thereof.The modularized water electrolysis hydrogen production system comprises a renewable energy power generation system, an energy management monitoring system, an electrolysis unit module set and an energy storage system, and the renewable energy power generation system comprises a renewable energy power generation device and a rectification inversion device; the electrolysis unit module group comprises a plurality of electrolysis unit modules, the energy storage system comprises an inversion device and an energy storage battery pack, and the energy management monitoring system is in communication connection with the renewable energy power generation system, the electrolysis unit module group and the energy storage system; the method comprises the steps of obtaining the number of electrolysis unit modules in a production state, a standby state and a shutdown state, calculating the residual load sum P < total > of the electrolysis unit modules in the production state and the standby state, predicting the generating capacity increments delta P1 and delta P2 of the renewable energy power generation system in the next time period and the next time period according to a weather forecast system, and according to the relationship among the delta P1, the delta P2 and the Ptotal, how to convert the state of the electrolysis unit and the conversion quantity are determined.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a modular water electrolysis hydrogen production system and a control method thereof. Background technique [0002] With the proposal of the 3060 double carbon target, hydrogen is gradually being mentioned as an energy carrier because of its green and environmental protection characteristics. Among many hydrogen production technologies, water electrolysis hydrogen production technology is considered to be the mainstream hydrogen production technology in the future, because when it is coupled with renewable energy, the entire hydrogen production process can truly achieve zero carbon. However, the current hydrogen production capacity of a single electrolyzer is relatively small, and it is difficult to meet the rapid growth of hydrogen demand in the future industry and other fields. At the same time, the volatility of renewable energy will also bring hidden dangers to the safety...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a modularized water electrolysis hydrogen production system and its control method to solve the problem of unstable hydrogen production, slow response of the electrolyzer, low hydrogen production efficiency, low hydrogen production, and existing problems in the existing water electrolysis hydrogen production system. Safety hazards and other issues

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