How can integrated energy technologies shine in zero-carbon smart parks?

I. What exactly is a zero-carbon smart park?

Currently, the country attaches great importance to green and low-carbon development and has introduced many policies, such as "Opinions on Fully and Accurately Implementing the New Development Philosophy and Doing a Good Job in Carbon Peak and Carbon Neutrality," and the "Action Plan for Carbon Peak before 2030." These policies point the way towards achieving the "dual carbon" goals. Simultaneously, the "14th Five-Year Plan" also mentions accelerating the construction of a digital China and promoting the digital and intelligent upgrading of parks. Against this backdrop, zero-carbon smart parks have emerged.

 

Simply put, a zero-carbon smart park integrates the concept of carbon neutrality into every aspect of the park, from planning and construction to management and operation. It starts with a "zero-carbon park" as its foundation, accurately calculating carbon emissions, setting carbon neutrality targets, and planning specific methods to achieve these targets. In this process, specialized methods are used to comprehensively monitor carbon generation and reduction, and digital means are used to integrate energy conservation and emission reduction, carbon sequestration, and carbon sink enhancement measures. Finally, through intelligent management, the park achieves low-carbon industrial development, green energy transformation, integrated resource sharing, and resource recycling, balancing carbon emissions and absorption, and harmoniously integrating production, ecology, and life. This is like creating a green and intelligent "super brain" for the park, allowing it to operate more environmentally friendly and efficiently.

II. Strengthening Grid Infrastructure: The Solid Foundation of Park Energy

Grid infrastructure is the key to park energy supply, like the foundation of a building—it must be solid. The State Grid Jinyun County Power Supply Company has done exceptionally well in this area. In the first half of 2024, it completed the commissioning of four substations: the 110 kV Panxi Substation, the 220 kV Hexi Substation, the 220 kV Yuxin Substation, and the 110 kV Bicun Substation.

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After the commissioning of the Panxi Substation, the power transmission capacity of hydropower and new energy in the southeastern part of the county has been greatly improved, like adding a "highway" for local energy transmission, allowing energy to be delivered more smoothly to where it is needed. The Hexi Substation is also significant; it alleviates the pressure of industrial loads in the Hutou Town area, meeting the rapidly growing electricity demand there. Previously, when Hutou Town experienced electricity shortages, it was like being thirsty but unable to drink water; now, with the Hexi Substation, this problem is solved. The commissioning of the Yuxin Substation has greatly helped the steel industry, accelerating industry upgrades and driving high-quality development, allowing steel companies to use energy more efficiently and environmentally during production. The Bicun Substation has improved the power grid structure in the northwestern area, meeting the energy needs of key enterprises and projects in the economic development zone, injecting strong impetus into local economic development.

 

After the completion of these substations, the power supply capacity of the Jinyun main grid has been significantly improved, completing the "14th Five-Year Plan" and construction tasks ahead of schedule. Furthermore, by constructing a "3+12" strong main grid and a modern intelligent distribution network, it has provided strong power support for the overall regional development layout. With the optimized grid structure and shortened power supply radius, favorable conditions have been created for the access and absorption of distributed energy. Previously, some distributed energy projects could not be implemented smoothly due to grid limitations; now, with the strengthened grid, more and more distributed energy projects can be implemented, accelerating the transformation and upgrading of the regional energy structure and allowing the park to use more clean and green energy.

III. Building a Smart and Highly Resilient Power Grid: Ensuring Stable Energy Supply

In response to the "dual carbon" strategy, the State Grid Jinyun County Power Supply Company has made the construction of a highly resilient and intelligent distribution network a key objective to improve the access and absorption capacity of distributed energy.

Rural power grids have their own characteristics. After in-depth research, the company has incorporated various clean energy sources such as wind, photovoltaic, hydropower, and energy storage to build a multi-energy complementary energy aggregation station. This is like an energy "supermarket," bringing together various clean energy sources to form an efficient and flexible energy supply network. By the end of 2023, Jinyun County had cumulatively connected distributed photovoltaic installations exceeding 50 MW, distributed wind power installations reaching 30 MW, and total energy storage capacity reaching 20 MW. ・ These clean energy sources are fully utilized, significantly improving the utilization rate of local clean energy, demonstrating the company's significant achievements in improving the access capacity of distributed energy.

 

To make the grid more flexible, the company has also introduced advanced digital and intelligent means to comprehensively upgrade and transform the distribution network. For example, relying on the application of new energy routers and cluster control technology, efficient scheduling and management of distributed energy can be achieved, ensuring the safe and stable operation of the power grid. Imagine the power grid as a complex transportation network; new energy routers and cluster control technology are like intelligent traffic command systems, allowing various energy sources to flow orderly within the power grid.

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The company is also actively promoting the construction of smart microgrids, using the Internet of Things, big data, and artificial intelligence technologies to build an integrated energy service platform that integrates sources, networks, loads, and storage. This platform is powerful, helping enterprises improve the access capacity of distributed energy, accelerate the development of the local new energy industry, and lay a solid foundation for the construction of smart zero-carbon parks.

IV. Promoting Photovoltaic Electrified Agriculture: Illuminating the Path to Green Rural Development

In promoting "photovoltaic + facility agriculture," the State Grid Jinyun County Power Supply Company has done a lot of practical work. The company vigorously implements rooftop solar power generation projects and actively promotes electrified agricultural greenhouses and ground source heat pump technologies, closely integrating photovoltaic power generation with agricultural production.

Installing photovoltaic components on the tops of agricultural greenhouses has many advantages. On the one hand, it provides clean electricity for farmers, like installing a small power plant in their homes, making electricity use more convenient and environmentally friendly. On the other hand, it also saves energy costs for agricultural production. Previously, electricity costs were a significant expense for farmers in agricultural production; now, with photovoltaic power generation, they can save a considerable amount of money. To date, Jinyun County has built photovoltaic agricultural projects covering an area of 1.33 square kilometers, with an annual power generation of approximately 30 million kilowatt-hours. ・ This has driven an increase in farmers' income exceeding 5 million yuan. These tangible data fully demonstrate the important role of photovoltaic electrified agriculture in promoting farmers' income and rural economic development.

Beyond agricultural greenhouses, the company promotes green energy usage methods such as electronic kitchens, all-electric homes, and electrified agricultural processing, accelerating the construction of public charging piles in rural areas. Through these measures, market-oriented methods are used to guide various rural industries to participate in demand-side response. Furthermore, the company has built a highly flexible distribution network demonstration area, exploring the construction of an energy internet in rural areas and promoting the development of high-quality agricultural services. Photovoltaic electrified agriculture provides replicable and promotable experience for building smart zero-carbon villages, laying a solid foundation for achieving the "zero-carbon village" and "future village" models, and filling the future of rural areas with green hope.

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V. Promoting Multi-Energy Complementary Technology: Building a New Hydrogen-Electricity Coupling Model

Diversified energy utilization is crucial for the construction of smart zero-carbon parks, and the State Grid Jinyun County Power Supply Company is actively exploring the application of multi-energy complementary and hydrogen-electricity coupling technologies in this area.

Jinyun County is rich in hydropower resources. The company takes full advantage of this, combining it with various clean energy sources such as wind power, solar power, and biomass energy to build a multi-energy complementary energy system. For example, the water-hydrogen biomass near-zero carbon demonstration project launched in Jinyun County combines water electrolysis hydrogen production and hydrogen fuel cell power generation technologies to enable efficient energy conversion and utilization. This project produces 500 tons of hydrogen annually and reduces carbon dioxide emissions by about 10,000 tons, making a significant contribution to the local carbon neutrality goal.

 

In order to promote the deep integration of hydrogen energy and the power system, the company has made great efforts in many aspects. In the transportation sector, multiple hydrogen refueling stations have been built to support the demonstration operation of hydrogen fuel cell vehicles. Imagine that in the future, many of the cars on the road will use hydrogen as fuel, which is both environmentally friendly and efficient. In the energy storage field, the company is also actively exploring the use of hydrogen energy as a regulation method for the power grid, utilizing hydrogen energy storage technology to improve the flexibility and stability of the power grid. This not only optimizes the energy structure and makes energy utilization more diversified, but also provides strong technical support for building smart zero-carbon parks, making the park's energy supply more stable and environmentally friendly.

VI. Future Outlook: The Unlimited Potential of Integrated Energy Technology

In the process of promoting the development of distributed energy in smart zero-carbon parks, the State Grid Jinyun County Power Supply Company has achieved remarkable results through a series of strategies, including strengthening grid infrastructure, building a smart and highly resilient power grid, promoting photovoltaic electrified agriculture, and promoting new multi-energy complementary technologies. This has not only improved the power supply capacity and reliability of the power grid, but also promoted the optimization of the local energy structure and green economic transformation, making a positive contribution to achieving the "dual carbon" goals.

In the future, with continuous technological advancements, integrated energy technology will have unlimited potential in zero-carbon smart parks. For example, with the further development of artificial intelligence and big data technologies, the intelligent management level of the power grid will become increasingly higher, and the dispatching and management of distributed energy will be more precise and efficient. In terms of photovoltaic electrified agriculture, more advanced photovoltaic materials and agricultural technologies may emerge, making the integration of photovoltaic power generation and agricultural production even closer, generating greater economic and environmental benefits. In multi-energy complementary and hydrogen-electricity coupling technologies, there may be new breakthroughs, making energy conversion and utilization more efficient and less costly.

With the help of integrated energy technology, we believe that more and more zero-carbon smart parks will emerge, our living environment will become greener and more beautiful, and energy utilization will become more efficient and sustainable. Let us look forward to that day!