China has become the world’s largest wind power major power grid to break through the bottleneck of wind power consumption

On August 15th, at the press conference of the State Grid on promoting the development of new energy sources such as wind power, Zhang Zhengling, a spokesperson for the State Grid Corporation of China, said that China's grid-connected wind power is 52.58 million kilowatts, which has replaced the United States as the world’s largest wind power producer. State Grid has become the world's largest and fastest growing power grid connected to wind power. At the same time, however, the problem of coalescence of wind power grids has become increasingly prominent.

The world's largest wind power country It is understood that in June 2012, China's grid-connected wind power 52.58 million kilowatts, has replaced the United States as the world's largest wind power. The State Grid has a grid-connected wind power of 50.26 million kilowatts, and the average annual growth rate since 2007 was 87.4%. In 2011, the national power grid dispatched a total of 70.6 billion kilowatt-hours of wind power, an increase of 28.2 times over 2006, and an average annual increase of 96%. From 2006 to 2011, the annual average utilization hours of wind power was 1992 hours, and in 2010 it reached 2,095 hours, which is roughly equivalent to that of Europe and the United States. The use of wind power in China has maintained a high level.

In terms of the effectiveness of wind power grid-connected operations, the highest proportion of wind power generated by wind power in Mengdong, Mengxi, Gansu, and Weibei respectively reached 72%, 28%, 26%, and 20%, and wind power in Mengdong, Mengxi, and Gansu was instantaneous. The largest proportion of output power load was achieved at 106%, 33% and 31% respectively, which is equivalent to that of Denmark and Spain. Zhang Zhengling stated that "China's large-scale power grid has the ability to operate large wind power at the leading level in the world."

The issue of wind power consumption needs to be solved urgently. The issue of “discarding wind” has always been a worldwide problem. Compared with foreign countries, the issue of wind power consumption in China is even more prominent. On the one hand, China's wind power resources are concentrated away from the load center, so it is difficult to absorb on the spot. On the other hand, the power supply structure in China's wind power concentrated areas is single, and the capacity of system peak shaving is weak.

From a local point of view, the proportion of "three north" wind power has reached a high level of 20%, which is constrained by such factors as the small size of the market, limited peaking resources, and insufficient cross-regional transmission capacity. The space for further large-scale development of wind power is gone. From a national point of view, currently wind power accounts for only 5% of the total installed capacity of power sources, and the peak shaving resources in the eastern and central regions are relatively abundant, and the market potential of eliminating wind power is not fully realized.

“The key issue at the moment is that the linkages between the regions are still weak, and a unified national market and a nationwide networking capacity are not yet formed. It is difficult to adapt to the large-scale development of wind power in the next step and optimize the deployment in a larger area. Needs.” Shu Yinhao, deputy general manager of the State Grid Corporation of China, mentioned in his speech, “But the advantages of solving wind power problems in our country lie in unified management, unified dispatch, and nationwide networking. The State Grid Corporation of China deeply analyzes the laws of wind power operation and improves the construction of the support system. , scientifically arrange the operation mode of the power grid, give full play to the role of the large power grid, and strive to ensure the acceptance of wind power."

It is understood that under the situation of rapid development of wind power, the State Grid Corporation of China studied and formulated a series of standards and specifications such as "Technical Regulations for the Integration of Wind Farms into Power Grids," and "Technical Regulations for the Integration of Photovoltaic Power Plants into Power Grids," and compiled and published the electric power of wind farms. Some typical designs have effectively solved the problems such as the lack of regulation of new energy sources such as wind power and the lack of standards for access to the power grid.

According to sources, China will implement a renewable energy quota system by the end of 2012. The quota system makes clear the three main responsibility entities: power grid companies, large-scale power generation investment companies, and local governments. Experts at the meeting believe that the quota system has clearly defined the compulsory obligations of the three parties to a certain extent, which will help raise the level of local government's attention to the issue of wind power consumption. At the same time, the responsibility of the State Grid and power generation companies in the issue of wind power consumption is also clearly defined. This kind of quota system makes the development plans of the three main bodies more clear in the future.

Building large bases and integrating into large power grids In July 2012, the National Energy Administration issued the “Twelve Five-Year Plan for Wind Power Development” and the “Twelfth Five-Year Plan for the Development of Solar Power Generation,” and proposed China’s wind power and solar energy for 2011–2015. Power generation development goals, development layout and construction priorities. In 2015, wind power grid installed capacity was 100 million kilowatts, and 200 million kilowatts in 2020. Solar power generation installed capacity in 2015 was 21 million kilowatts, and 50 million kilowatts in 2020.

State Grid Corporation of China conducted a comprehensive and in-depth study of the “Twelfth Five-Year Plan” for wind power and solar power generation, and proposed a power grid development plan that is compatible with wind power and solar energy development goals. In accordance with the development idea of ​​“building a large base and integrating it into a large power grid”, the State Grid Corporation of China organized and completed transmission plans for all wind power bases, and “distribution of the first province, post-region, and then the whole country” arranged the market for wind power consumption, and proposed wind power bases in the province. The power grid construction plan and the external power consumption grid plan will plan the "Three North" wind power base and the "Three China" power market as a whole, and provide a comprehensive and complete implementation path for the realization of wind power development goals in China.