Alkaline electrolytic cell operation characteristic digital twinborn model construction method
A technology of operating characteristics and construction methods, which is applied in the field of digital twin model construction of alkaline electrolyzer operating characteristics, can solve problems such as large fluctuation range, reduced equipment working efficiency, frequent system start and stop, etc., to avoid poor model versatility and simplify construction , high accuracy and engineering usability effects
Pending Publication Date: 2021-12-14
TONGJI UNIV
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Problems solved by technology
When the electrolytic cell is coupled with wind and photovoltaic power generation, due to the intermittent and fluctuating nature of wind and solar energy, the power delivered to the electrolytic cell is not constant and fluctuates in a large range, which will cause problems such as frequent start-up and stop of the system and load changes. On the one hand, it will shorten the service life of the equipment, on the other hand, it will reduce the working efficiency of the equipment and reduce the hydrogen production, which will seriously restrict the development of large-scale power generation of renewable energy
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[0049] Digital twin technology based on sensing technology, Internet of Things technology, and simulation modeling technology has become an advanced and feasible new technology to realize the real state simulation comparison and deduction evaluation of physical entities through the fusion of physical models and data-driven models. . In recent years, models related to digital twins have attracted widespread attention in the industrial field. This technology has gradually become an emerging research hotspot in the field of intelligent manufacturing and complex system performance monitoring. For example, relevant research has introduced digital twin technology into simulation models. By comparing with the traditional static model with fixed parameters, it is verified that the digital twin model has higher accuracy and engineering usability. Referring to the research results of other objects, the digital twin technology is applied to the construction of the working characteristic ...
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The invention relates to an alkaline electrolytic cell operation characteristic digital twinborn model construction method which comprises the following steps: 1) constructing an alkaline electrolytic cell impedance characteristic digital twinborn model by taking a cell temperature as a unique twinborn correlation variable according to related tests and working mechanisms of an alkaline electrolytic cell; and 2) based on the digital twinning model of the impedance characteristic of the alkaline electrolytic cell, fusing the mathematical driving model and the electrochemical mechanism model, and realizing digital twinning modeling of the operating characteristic of the alkaline electrolytic cell by taking the characteristic characterization parameters of the total voltage, the total current, the cell body temperature, the operating power and the hydrogen yield of the electrolytic cell as observation variables, the characteristics specifically comprise temperature rise characteristics, power regulation characteristics, hydrogen production efficiency characteristics and separation tank characteristics. Compared with the prior art, the method has the advantages of being high in universality, simple in process, high in accuracy, high in engineering availability and the like.
Description
technical field [0001] The invention relates to the technical field of hydrogen production by electrolysis of water, in particular to a method for constructing a digital twin model of operating characteristics of an alkaline electrolyzer. Background technique [0002] Hydrogen energy has the characteristics of high energy density, clean and pollution-free, efficient and renewable, and is the best way to solve the energy resource crisis and environmental crisis, so it is known as "the ultimate energy source in the 21st century". The development of the hydrogen energy industry is inseparable from green, efficient and safe hydrogen production. The use of wind, light and other renewable energy to generate hydrogen has shown great application prospects. Renewable energy with electrolysis of water as the core hydrogen production technology Hydrogen production has been included in the respective energy strategies of many countries. As the core equipment of the renewable energy ele...
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IPC IPC(8): G16C20/10G16C20/90
CPCG16C20/10G16C20/90
Inventor 沈小军
Owner TONGJI UNIV