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Mobile WebSiteQinghai Province on the Qinghai-Tibet Plateau has unique conditions for the development of photovoltaic and wind power. In March 2018, the National Energy Administration approved the establishment of a national clean energy demonstration province in Qinghai. As the first batch of Qinghai Haixi tens of kilowatts of clean energy base project - Luneng Haixi multi-energy complementary integration optimization national demonstration project construction is progressing in an orderly manner. What is the difference between this project and the traditional new energy project? What are the innovation highlights? What impact will it have on new energy development and safe operation of the power grid?
Innovatively build a "new energy +" multi-energy complementary demonstration project
Luneng Haixi Multi-energy Complementary Integrated Optimization Demonstration Project (hereinafter referred to as “Haixi Multi-Energy Complementary Demonstration Project”) has a total installed capacity of 700,000 kilowatts, including 200,000 kilowatts of photovoltaic projects, 400,000 kilowatts of wind power projects, and 50,000 kilowatts of solar thermal power generation. The project and the 50,000-kilowatt energy storage system are planned to be built into a world-leading “wind, light, heat, storage, regulation and load” integrated multi-energy complementary and intelligent dispatching pure clean energy comprehensive utilization innovation base. The project is the first multi-energy complementary technology innovation project in the country's first multi-energy complementary integration optimization demonstration project. After completion, the annual power generation will be about 1,262.5 million kWh, and the annual standard coal savings will be about 40,500 tons. Effectively reduce coal consumption and reduce air pollution.
Qinghai has vast desertification land and abundant solar energy resources. The advantages of developing photovoltaic and wind power are unique. However, wind energy and solar energy are affected by the weather and have strong randomness. It is difficult to provide continuous and stable power output, which has become a bottleneck restricting the large-scale development and utilization of new energy. The construction of the Haixi Multi-Energy Complementary Demonstration Project will provide a feasible solution to this problem.
Compared with the traditional new energy projects, the Haixi multi-energy complementary demonstration project adopts the “new energy+” mode, with photovoltaic, photothermal and wind power as the main development power sources, and the photothermal energy storage system and battery energy storage power station as the regulating power supply. A variety of power combinations, effectively improve the wind power and photovoltaic instability, non-adjustable defects, and completely solve the problem of power output imbalance during the peak and low peak periods. According to the unified design, step-by-step implementation, and integrated integration route, the project will implement real-time flexible control of wind power, photovoltaic, and solar thermal new energy combinations, and build an “Internet +” smart energy system to achieve intelligent control and improve system operation flexibility. Reduce output volatility and improve overall efficiency.
The Haixi Multi-energy Complementary Demonstration Project is a concrete action to implement the national energy strategy, develop and strengthen the clean energy industry, ensure energy security, and promote the construction of ecological civilization. It is also a concrete manifestation of Luneng Group's implementation of the company's decision-making and courage to undertake social responsibility.
Fill in the gap of multi-energy complementary intelligent scheduling technology
The 50,000-kilowatt energy storage project of the Haixi multi-energy complementary demonstration project adopts high-energy conversion efficiency battery energy storage module design technology, system integration technology of large-scale energy storage power station, high-efficiency and low-cost ladder utilization technology of power battery, and power coordination of large-scale energy storage power station. Control and energy management technology, making full use of the regulation of photothermal, electrical energy storage and thermal energy storage, can effectively reduce system construction costs and abandon wind, light rejection rate, and improve power supply reliability. By constructing a mobile plug-and-play energy storage power station technical solution that can access different voltage levels, the flexible application of the energy storage power station can be realized, which provides powerful support for the unified scheduling and energy management technology of large-scale battery energy storage power stations. The energy storage project will be put into operation at the end of 2018.
Energy storage projects can provide peaking, frequency modulation, standby, black start, demand response support and other services for power grid operation, improve power system flexibility, economy and safety, and enable wind energy through solar thermal energy storage and battery storage. The power generation characteristics of new energy sources such as light energy reach the power quality of conventional energy supply, realize the function of cutting peaks and filling valleys, and friendly access to the power grid.
"Demonstration projects through the deep integration and optimization of multiple energy sources can effectively solve the problem of power output imbalance during peak and low peak periods, improve grid stability, and enhance the grid's ability to accept new energy." Wei Peng introduced, Haixi The multi-energy complementary demonstration project will effectively solve the technical problems encountered in the current large-scale grid connection of new energy, promote the large-scale development and utilization of new energy, and further promote the complete supply of clean energy in Qinghai, which is a milestone in the history of new energy development.
