China's offshore wind power has a great potential for a steady start

The Shanghai International Offshore Wind Power and Wind Power Industry Chain Conference and Exhibition 2011 recently held more people's attention once again to offshore wind power, a booming emerging field.

According to the estimates of the China Wind Energy Association and the World Association for Nature and Nature, within a range of 100 kilometers from the coastline and a center height of 100 meters, winds of more than 7 meters per second will be provided to 18,000 kilometers of coastline and China in the East Asian monsoon region. The potential generating capacity will be 110 billion kilowatts per year.

The beginning of the end of 2010, China's cumulative installed capacity of wind power reached 44.73 million kilowatts, surpassing the United States to rank first in the world. At the same time, offshore wind power has also started. Last February, China’s first demonstration project of offshore wind farms and Asia’s first large-scale offshore wind farm—Shanghai Donghai Bridge’s 100,000-kilowatt offshore wind farm’s 34 units were installed, and was subsequently connected to the grid for power generation in June. Provide electricity for 400,000 families. In addition, the tender for the first batch of domestic offshore wind power projects was also launched in May of the same year. Some people vividly compared 2010 to the first year of offshore wind power development in China.

Qin Haiyan, secretary-general of the Wind Energy Professional Committee of the China Renewable Resources Association, believes that the reason why China pays high attention to offshore wind power is not the same as many European countries because of the exhaustion of land resources. On the contrary, China's onshore wind resources are still very large. Development space. The vigorous development of offshore wind power is more a result of comprehensive considerations of natural resources, climate change, and economic benefits.

The potential is huge Although offshore wind power is more difficult than onshore wind power for equipment installation, transportation and maintenance, there are still many advantages in China's development: for example, within a depth of 5 to 25 meters in the sea, 50 meters in height The installed capacity of wind power is about 200 million kilowatts; the depth of wind power of 5 to 50 meters and a height of 70 meters can be about 500 million kilowatts. Offshore wind power is close to the traditional power load center, which is convenient for power grid consumption and can reduce the troubles of long-distance transmission.

According to Shi Pengfei, deputy director of the Wind Energy Professional Committee of the China Renewable Resources Association, by 2015, China’s installed offshore wind power capacity will reach 5 million kilowatts and even exceed expectations, but the ratio is still higher than the total installed capacity of over 900 million kilowatts of electric power last year. Very small, it is unrealistic to expect offshore wind power to ease the current power shortage. The exploration of offshore wind power is more about energy conservation and emission reduction and consideration of climate change.

Shi Lishan, deputy director of the New Energy and Renewable Energy Division of the National Energy Administration, pointed out that offshore wind power is not only a trend of international energy development, but also a key focus for the future development of wind power in China.

Supporting power As offshore wind power generation in China is “wind and water”, the related supporting equipment can also keep pace with the development. Recently, the first 6 MW wind turbine unit independently researched and developed by China Huarui Wind Power Technology Co., Ltd. successfully went offline. At present, there is not yet a turbine of 6 MW or above in the commercial phase in the world.

According to reports, from the perspective of wind farm investment costs, although the increase in the size of offshore wind turbines will increase the unit purchase cost by 10%, it can save more than 15% of equipment maintenance costs, and the total investment cost will be reduced by more than 5%. Hua Gang, senior vice president of wind power, Tao Gang believes that with the development of wind power industry, especially the promotion of offshore wind power technology, the large-scale development of wind turbines has become an inevitable trend, and large wattage generator sets independently developed by China are bound to be offshore wind power generation. The development in China provides strong impetus.

“The Chinese companies are not inferior to European companies in the technological development progress of production of large wattage generator sets and the technical level of the units. However, in terms of the reliability of mass production, Chinese enterprises should continue to strengthen.” Qin Haiyan of China Wind power equipment manufacturers have confidence.

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