On August 30, Sinopec announced that China's largest photovoltaic power generation direct production green hydrogen project, Xinjiang Kuqa Green Hydrogen Demonstration Project (hereinafter referred to as the Green Hydrogen Demonstration Project), was fully completed and put into operation, marking a breakthrough in the large-scale industrial application of green hydrogen in China. In this project, Hollysys and Sinopec team worked together to develop and innovate, laying a solid foundation for the large-scale and efficient production and utilization of green hydrogen, promoting the deep integration of carbon peaking and carbon neutrality goals and innovative technology, and jointly promoting the high-quality construction of the demonstration and application of the whole national green hydrogen industry chain.
The green hydrogen demonstration project is the first large-scale project in China to directly produce green hydrogen by photovoltaic power generation, with a hydrogen production capacity of 20,000 tons/year by water electrolysis, a hydrogen storage capacity of 210,000 standard cubic meters, and a hydrogen transportation capacity of 28,000 standard cubic meters per hour. The 20,000 tonnes of green hydrogen produced annually are supplied to Sinopec Tahe Refining & Chemical Company nearby to replace the natural gas used in oil refining and processing to produce hydrogen. It is estimated that carbon dioxide emissions will be reduced by about 485,000 tons per year in the future.
Photo/Source: Sinopec
Relying on the abundant solar energy resource endowment in Xinjiang, the project integrates the whole process of green hydrogen production and utilization, including photovoltaic power generation, green power transmission, green electricity hydrogen production, hydrogen storage, hydrogen transportation, and green hydrogen refining. The key to the steady development of green hydrogen plants lies in the rapid response and synchronization of all links in the chain.
Photo/Source: Sinopec
In the face of difficult bottlenecks such as the large scale of the project's foundation, the instability of photovoltaic power generation, and the large number of hydrogen production device manufacturers, as well as the reality of new process technology and no mature engineering cases to learn from, Hollysys gave full play to its profound technical strength in intelligent control and provided the whole plant integrated solution from basic control to intelligent management for the project, covering the green hydrogen intelligent control and dispatching system, DCS, SIS, CCS, GDS, simulation system, and intelligent operation control platform jointly innovated and developed with the Sinopec team. Spanning the whole process of green hydrogen such as photovoltaic power generation, power transmission and transformation, hydrogen production by water electrolysis, hydrogen storage, hydrogen transportation, etc., it realizes the organic integration of strong electricity, weak electricity, process and information, and makes a breakthrough to solve the problem of flexible and economical hydrogen production and continuous and stable supply in the scenario of new energy fluctuating power.
The United Way, the first of its kind
The green hydrogen intelligent control and dispatching system jointly developed by Hollysys and Sinopec team is the core technology of the project, and it is also the industry's first integrated intelligent decision-making and scheduling system covering the whole process of a 20,000-ton large-scale green hydrogen project.
Through the simulation and intelligent simulation verification of the whole life cycle, the system meets the automatic and rapid response needs of the project to photovoltaic fluctuations, and optimizes the power strategy, slotting strategy and source-grid-load storage control strategy. According to the situation of on-site process equipment, the whole process of self-perception, self-diagnosis, self-learning, self-optimization, self-adaptation to extreme weather changes and hydrogen consumption changes, to achieve the function of one-key start and stop, fully automatic unmanned operation.
Technology foundation, digital empowerment
Simulation is a key part of the smart factory, in order to ensure the smooth and timely production of the project, Hollysys perfectly combines dynamic simulation and virtual control simulation, conducts the whole process simulation according to the actual device, realizes the same operation experience as the site, and finally carries out all the operation training and closed-loop chain verification of the control strategy in the virtual environment of the computer, so as to escort the efficient and stable operation of the green hydrogen demonstration project "safe, stable, long, full and excellent".
In addition, the intelligent operation and control platform effectively integrates the industrial data of the whole life cycle of green electricity to green hydrogen, combined with the data modeling of the business management model, and helps the transparent control of the whole production process of the green hydrogen demonstration project through intelligent applications such as production monitoring, quality management, special operation tickets, intelligent inspection, production measurement statistics, and device alarm stability rate.
Based on the 3D model and digital delivery system during the construction period, Hollysys carries out the construction of the digital twin system in the digital space, maps the whole life cycle process data integration of physical equipment, realizes special operation monitoring, virtual inspection, electronic fence and other functions, meets the data interaction between the 3D model and real production, and promotes the intelligent decision-making and closed-loop optimization of the whole business process of the project.
Hollysys has been deeply engaged in the intelligent field of refining, power generation and electrolysis industry for many years, and with the help of rich solution capabilities and on-site practical experience, it has realized the large-scale, low-cost and high-efficiency control and control of green hydrogen production, storage and transportation, providing a new idea for the localization and intelligent production control and management of intelligent green hydrogen plants, effectively promoting the development of China's hydrogen energy industry, and adding more "hydrogen" power to China's energy transformation and carbon peaking and carbon neutrality.
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