In the context of energy transition, the development of renewable energy in Gansu is accelerating. In recent years, Jiuquan City has seized the double-carbon opportunities, closely focused on the construction of large new energy bases, and started a new round of large-scale development of new energy. The cumulative installed capacity of new energy has reached 21.02 million kilowatts, accounting for 84.2% of the total installed capacity of electric power. The proportion power system has obvious characteristics.

Power installed scale is large

Continuously strengthened the flexibility transformation of peak-stressing thermal power, and completed the 30% ultra-low load safe operation flexibility and deep peak-shaving transformation of Huaneng Jiuquan Thermal Power Plant No. 10,000 kwh, and 4.356 million kwh of new energy will be generated; Qishao DC supporting Changle Power Plant Phase I 2×1 million kw supporting peak-shaving thermal power project will be completed, and Changle Power Plant Phase II 2×1 million kw peak-shaving thermal power project will be completed by the end of 2023 After the thermal power project is completed and put into operation, Qishao's direct current transmission capacity will be increased to 8 million kilowatts. The construction of the third phase of Changle Power Plant's 2×1 million-kilowatt peak-shaving thermal power project in the province has started, and it is expected to be completed and put into operation in 2025. After the first, second, and third phases of Changle Power Plant are all put into operation, they can support the new energy base in the Hexi region to generate 60 billion kwh of electricity per year and send out 40 billion kwh, building a new type of power with new energy as the main body for Jiuquan and even the whole province The system has created favorable conditions for the large-scale optimal allocation and bundling of thermal power and new energy. Actively build new energy storage power stations on the power side. At present, the city's new energy is equipped with 230,000 kilowatts of new energy storage power stations on the power side, and strives to reach a scale of 800,000 kilowatts within the year. 210,000 kilowatts of solar thermal installed capacity has been built, and 510,000 kilowatts of installed capacity is under construction. We strive to reach 720,000 kilowatts of solar thermal installed capacity in the city within the year, providing strong support for accelerating the construction of a new power system.     

Power grid transmission capacity is strong

One Qishao DC ±800 kV UHV DC channel, 4 750 kV substations, 12 public network 330 kV substations, and 9 750 kV transmission lines are connected to the surrounding power grids, forming a 750 kV Jiuquan, Mogao, Dunhuang, and Shazhou have a strong mainnet structure at the center. The two 750 kV power transmission and transformation projects in Yumen and Jinta have been approved. After completion, Yumen and Jinta areas can add 6.8 million kilowatts of new energy access capacity, and the power transmission capacity of Jiuquan New Energy Base will be further improved. The structure is further optimized. The city has built 60,000 kilowatts of energy storage power stations on the grid side, and plans to have an installed capacity of more than 260,000 kilowatts of independent energy storage power stations on the grid side within the year. Keywords: infrastructure, infrastructure construction, domestic engineering news, planning investment

The role of load demonstration is outstanding

Accelerate the construction of Baofeng polysilicon upstream and downstream collaborative projects, and settle electricity and electricity charges according to the virtual power plant electricity price model. The installed capacity of the grid-load-storage integration demonstration project is 700,000 kilowatts. In accordance with the principles of simultaneous planning, simultaneous construction, and simultaneous commissioning of source, grid, storage projects and load projects, actively and steadily promote the construction of source-grid-load-storage integration projects, and form a replicable, applicable, and scalable new load-side power system construction as soon as possible Based on experience, gradually expand the construction scale of the source-network-load-storage integration project. Editor/Xu Shengpeng