Our country will focus on solving the bottleneck of wind power transmission to reduce development obstacles

On November 3rd, the State Grid Corporation of China held a ceremony in Beijing, Gansu and Xinjiang to celebrate the completion of China's single largest project investment network on the AC. Since then, China has added a new energy supply and distribution channel. What's more, this means that China has begun to focus on solving the bottleneck of wind power transmission and reducing the development barriers for this wind power market.

The investment of 20 billion yuan in the construction of seven 750-kilovolt substations and 1,780 kilometers of double-return super high-voltage lines, from the most western part of China's Xinjiang, along the Silk Road to reach Yongdeng, Gansu, and the already built northwest 750 thousand The Volt grid is connected, which has become one of the world's largest synchronous AC grids, with a total length of 4,000 kilometers. This "electricity highway" will pass through China's two 20-million kilowatt-class wind power bases: Hami in Xinjiang and Jiuquan in Gansu.

The results of the recent survey of wind energy resources organized by the China Meteorological Administration show that Xinjiang, Gansu, Ningxia and Inner Mongolia are a huge wind belt, providing favorable conditions for the concentrated development and utilization of wind energy. Su Shengxin, general manager of Xinjiang Electric Power Co., Ltd. introduced that in Xinjiang alone there are 9 major wind districts, with 772 million kilowatts of wind energy resources, accounting for nearly 40% of the total onshore wind energy resources in China, and wind power capacity of more than 80 million kilowatts, and China’s economic development In the eastern part of the country, more than 85% of energy sources rely on external adjustments. In recent years, they frequently suffer from "electricity shortage" and "oil shortage."

Wind power regions in western China want to transform their resource advantages into economic advantages. The eastern power market wants to ease the "thirst of electricity." The feeling of "marriage" between the two sides is very urgent. This is evident in the construction speed of the 750 kV transmission project.

According to Cao Shengshun, Director of Development Planning Department of China Northwest Power Grid Corporation, the project was completed and put into operation in only 19 months, becoming a “miracle” in the history of China’s power construction. More than 30,000 builders were working day and night to overcome the cold and heat of the day and strive to get through this soon. Article "Power Highway".

The "hatching effect" of this power corridor has gradually emerged over the past year. Du Zhenzheng, chairman of Henan Mingdu Wind Power Co., Ltd., plans to build a wind farm in Hami, Xinjiang, and he is determined to invest in this UHV line. “Without power transmission, there is no way to sell electricity to the east. There is no way to make a car, but there is no way for the car to run. "At present, Hami in Xinjiang has been listed as one of the 7 "million-kilowatt-class wind power bases" in China. According to the local government, it is planned that the installed capacity of wind power in 2020 is 1080. Ten thousand kilowatts.

Jiuquan, Gansu Province, which is 500 kilometers away from Hami, is also one of China's “ten million kilowatt-class wind power bases”. By 2015, the installed capacity of wind power will reach 12.71 million kilowatts. Li Jianhua, secretary of the Jiuquan Municipal Party Committee, introduced that as of October 31, the local wind power installation had completed 5.36 million kilowatts, of which 1.15 million kilowatts had been connected to the grid for power generation. After the completion of the 10 million kilowatt-class wind power base, it was calculated according to the annual generating capacity of 2,300 hours. It can reduce carbon dioxide emissions by 16 million tons. In 2020, the installed capacity of Jiuquan wind power project will reach 20 million kilowatts."

The speed of development of wind power in Xinjiang and Gansu is not a case in China. At the Beijing International Wind Energy Conference held recently, it was estimated that 600,000 employees in the wind power industry will install one unit every 30 minutes on average in 2010, and one in each of the three installed units.

Faced with increasingly severe population, resource, and environmental pressures, the Chinese government has proposed that by 2020, non-fossil energy accounts for 15% of primary energy, of which the installed capacity of wind power has reached 150-200 million kilowatts, roughly equivalent to 13 Three Gorges The power station will generate more than 460 billion kilowatt-hours of electricity.

In the face of this plan, an EHV transmission line may not be able to meet the needs of wind power development in western China. According to relevant sources in the power sector, the 750 kV transmission line that is networked will lay the foundation for the two UHV transmission projects to be built within five years. If the 1000 kV transmission line from Xinjiang to the east and central part is completed, it will continue to be promoted. The installed capacity of wind power in western China has doubled.

Liu Zhenya, general manager of the State Grid Corporation of China, once stated that according to the national grid plan, after the completion of the Jiuquan wind power base, the 800 kV UHV DC transmission project from Jiuquan of Gansu Province to Hunan Province will be constructed. This is the first of its kind in China. Tens of kilowatts of wind power bases carry electricity. The project has a total length of 2,400 kilometers and a transmission capacity of 7 million kilowatts.

With the gradual cracking of the transmission bottleneck, the development of wind power in China will further accelerate. China has already planned to construct 70 million kilowatts of wind power bases on the coasts of Hami, Jiuquan, Mengdong, Mengxi, Hebei, Jilin, and Jiangsu. The total installed capacity is planned to reach 126 million kilowatts by 2020, and the grid-connected electricity for wind power is about 281 billion kwh.

Wu Gang, chairman of China's largest wind power equipment manufacturer Goldwind Technology Co., Ltd., said that wind power is the main option for China to address alternative energy sources and reduce environmental pollution in the future, and it is fully supported by local governments. “Although wind power also faces grids, technologies, etc. Many problems, but we are full of confidence in the future of wind power."