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New energy power generation gradually become the main force
New energy power generation gradually become the main force
Release time:
2018-07-21 08:35
As of June 30, the maximum output of new energy in the northern Hebei power grid reached 8.869 million kilowatts, accounting for 51.4 percent of the power generation in the northern Hebei region.This figure shows that the northern Hebei power grid, which shoulders more than 70% of Beijing's power transmission tasks, has surpassed the traditional power source in the proportion of new energy represented by wind power and solar photovoltaic power generation, and has become the main power source of the whole network.
According to reports, China has become the world's fastest growing new energy installed. By the end of May, the installed capacity of new energy in the operating area of the State Grid Corporation had reached 0.26 billion kilowatts, an increase of 32% over the same period last year. From January to May, new energy installed capacity increased by 17.58 million kilowatts, of which wind power and solar power installed capacity increased by 5.26 million kilowatts and 12.32 million kilowatts respectively, an increase of 24% and 15% respectively over the same period last year. The level of new energy consumption is also improving, and the abandonment rate of new energy power generation has achieved a double reduction. Take Jibei Company as an example, in the first half of the year, the amount of new energy abandoned electricity 0.524 billion kWh, down 56.3 percent from the same period last year, and the rate of new energy abandoned electricity was 2.9 percent, down 4.9 percentage points from the same period last year.
According to Shi Guirong, director of the North Hebei Electric Power Control Center of the State Grid, the main reason for the double reduction of new energy in the North Hebei Power Grid is to promote the consumption of new energy by accelerating the construction of the power grid, increasing scientific and technological innovation and refined management.
Zhangjiakou region is rich in new energy resources, and the installed capacity of new energy is expected to reach 20 million kilowatts by 2020. In recent years, State Grid Jibei Electric Power has basically met the demand for new energy grid connection in Zhangcheng area. Three years after the 13th five-year Plan, State Grid Jibei Company plans to invest 22 billion yuan to build UHV and 11 500 kV AC projects. we will further strengthen the construction of new energy channels and solve the problem of large-scale transmission.
Flexible consumption of clean energy through flexible DC is the innovative practice of Hebei North Company in science and technology. Liang Ji, director of the Jibei Electric Power Development Planning Department of the State Grid, said: "Flexible DC transmission and receiving ends can be connected with weak power grid or passive power grid to realize dynamic and continuous adjustment of transmission power, flexible operation mode, and large-scale collection and transmission of new energy." It is understood that the Zhangbei Soft Straight Demonstration Project under construction is the world's first 500 kV flexible DC demonstration project, which has important demonstration significance for exploring new energy development and utilization models in the western and northern regions of my country.
Fine modeling to enhance the transmission capacity of the power grid is also a major feature of Hebei North Company to eliminate new energy. "If the outgoing corridor is compared to a highway, then the new energy is the fleet waiting in line to pass, and the dispatch is the traffic police. We maximize the utilization rate of the highway by assessing the capacity of the highway in real time and arranging the vehicle traffic plan in a reasonable manner." Ding Ran, deputy director of the New Energy Department of Jibei Electric Power Control Center, said that Jibei Company has continuously optimized the wind-solar joint control strategy and developed a new energy active power control system. The utilization rate of the outgoing section during the full wind power generation period can reach more than 96%, greatly improving the transmission efficiency.
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