Nuclear and renewable energy, not "rivals" but "teammates"

Nuclear energy and renewable energy collaborative intelligent system adopts advanced nuclear energy and renewable energy supply and energy conversion technology, energy transmission technology, energy consumption technology, intelligent processing technology, comprehensive system optimization technology, to achieve independent, safe, clean, diversified and efficient energy supply and consumption. The main features of the system include safety, cleanliness, diversity and economy.

Safety: The total amount of energy in the collaborative intelligent system of nuclear energy and renewable energy is stable and abundant, and the sustainability is strong, and the energy supply in the system is low in external dependence.

Clean: The energy supply in the collaborative intelligent system of nuclear energy and renewable energy is low-carbon energy and environmentally friendly.

Diversity: The continuity of energy supply in the collaborative intelligent system of nuclear energy and renewable energy is strong. As the base load, nuclear energy supplements each other through cold, hot, gas, water, electricity and other energy sources, and is applied flexibly to ensure a variety of energy supplies.

Economy: As a mature support power supply, nuclear energy has achieved technical independence, and its cost is controllable and will gradually decrease with the expansion of application scale. Wind, light and other renewable energy sources have also become economically competitive energy varieties. At the same time, the power transmission loss and energy loss in the collaborative intelligent system of nuclear energy and renewable energy are low.

In order to realize the intelligent collaboration between nuclear energy and renewable energy, the flexible operation capability of nuclear power is the basic guarantee. At present, China's three generations of nuclear power generally have a certain flexible operation capability, and the high energy density and adjustability of nuclear power can escort renewable energy online to meet the needs of safe and stable power grid operation.

02

- Nuclear and renewable energy collaborative application scenarios -

1. Energy base delivery scenario

By the end of the third quarter of 2020, the total installed capacity of new energy power generation in Qinghai exceeded 57.1%. Due to the inherent randomness, volatility and intermittency characteristics of renewable energy such as wind and light, its large-scale grid connection has an impact on the power grid, coupled with the shortage of peak load capacity of the power grid, resulting in grid absorption difficulties, so the new energy base must consider stable base load power supply when it is connected to the grid. In addition, the long-term oversupply of Qinghai province's power market, in order to solve the problem of large-scale new energy consumption, we must rely on the delivery channel. Therefore, the development model of "clean energy base + delivery channel + matched peak power supply" has become the only way to develop new energy bases.

Qinghai Province plans to build UHV DC channels for its second large-scale new energy base, but due to the inability to solve the problem of power support points, the planning is slow to land. In order to make full use of the best light resources and large areas of desertification land in the country, and promote the construction of comprehensive pilot projects for the nearby consumption of renewable energy in the Qaidam circular economy Pilot Zone, it can be considered to choose a suitable location to build nuclear power units, provide stable support power points for the new energy base, and promote the construction of new energy bases and delivery channels. This application scenario can be extended to regions with abundant renewable energy resources and unbalanced energy supply and demand such as Inner Mongolia and Xinjiang.

2. Comprehensive energy utilization scenario

Shandong Province is an important region of China's coastal economic belt, and the clean, efficient and safe energy system is the solid foundation for its rapid and stable development. By the end of 2020, the installed capacity of new energy and renewable energy in the province has reached 48 million kilowatts, accounting for 30% of the total installed capacity of electricity. At the same time, the planning and construction of nuclear power has been steadily advanced, and the cumulative power generation has exceeded 48.5 billion KWH, and the installed power capacity of nuclear power under construction in the province has reached 5.7 million kW. Shandong Province's geographical conditions and energy endowment have the natural conditions for the development of renewable energy and nuclear energy smart synergy.

While generating electricity, the Haiyang nuclear power Plant that has been built not only meets the clean heating needs of nearly 700,000 square meters of residents around it through nuclear heating, but also participates in the regulation of offshore wind power to make up for the intermittent shortcomings of offshore wind power to a certain extent.