Recently, the National Energy Administration initiated the bidding for four offshore wind projects in Jiangsu Province. This has also caused many companies to see the huge business opportunities in the offshore wind power market. Power giants such as Huaneng, China Guangdong Nuclear Power, and Shenhua have already purchased bids, and local governments, small and large equipment manufacturers, and supporting suppliers have also taken an active part. This long-awaited bidding project has been seen as the first starting gun for China's wind power industry.
More space for development Although the "answers" for the first round of tendering still need to wait, but offshore wind power has been formally "worked" in China - on July 6, as one of the highlights of the Shanghai World Expo, Shanghai Donghai Bridge wind farm all Fans are connected to the grid for power generation. The emergence of the first large-scale offshore wind farm in China and even Asia was seen as a microcosm of offshore wind power in China. Now, offshore wind power is becoming the new darling of China's wind power sector.
“The development of China's new energy industry looks at wind power, and the prospects for wind energy development are at sea. Offshore wind power will become the future direction and commanding height of wind power in China.†An expert from the China Wind Energy Association commented on the current status of offshore wind power in China. The expert said that compared with onshore wind power, offshore wind power has the advantages of stable wind energy resources, no occupation of land resources, and minimal environmental impact. At the same time, China's offshore wind resources are very abundant. According to the latest evaluation of wind energy resources, the country's land can use 300 million kilowatts of wind energy resources, plus wind energy resources available in coastal waters, totaling about 1 billion kilowatts, and the development potential is huge. At the beginning of this year, according to the detailed investigation and evaluation of China's first wind energy resources completed by the National Meteorological Administration, it was able to measure an installed capacity of about 200 million kilowatts in China's offshore waters within 5 meters to 25 meters depth and 50 meters above sea level.
The broad prospects of offshore wind power have led to fierce competition for power giants facing pressure from renewable energy quotas. Because the east coast, especially Jiangsu and other coastal areas along the beach and offshore have very good conditions for the development of wind power, major power companies “staking their way to the seaâ€, CPI, Guodian, Huadian, China Guangdong Nuclear Power, Datang, China Resources Power, Jiangsu Guoxin Group, Germany Sola CCE has been involved. “An important reason why offshore wind power is currently sought after is that there is a market.†Zhao Song, the director of the operation and control department of AVIC Heavy Machinery Co., Ltd., said, “First, offshore wind power is mainly located in the southeast coast. Most of these areas belong to the more developed regions in the domestic economy. Electricity demand is also very large, so the electricity market is very large.Secondly, offshore wind power generation is also relatively large. After all, offshore wind resources are more abundant than land, which also makes installation capacity of offshore wind power projects more expensive than onshore wind power. Big."
Updated technical difficulties With the launch of China's offshore wind power concession bid, the industry believes that 2010 will be the first year of offshore wind power development in China. Although the prospects are good, China’s offshore wind power is also facing many difficulties. In the eyes of many people in the industry, offshore wind power is like a "premature baby". It hastily emerged without being "completely developed," and there are huge risks in many aspects.
Among them, the new technical problem of offshore wind power is one of the problems that needs to be solved urgently. “Compared to onshore wind power, the environment for the use of offshore wind power is very different, which puts different requirements on wind power equipment, etc. From the technical point of view, this requirement is more demanding. From another perspective Look, in fact, it is equivalent to setting a new technical threshold." Zhao Song said, "The main features of offshore wind power are larger installed capacity, larger wind turbines, and corrosion resistance." In June this year, the World Bank also published a report specifically that Since the marine environment is far more complicated than land, solving any minor problem of offshore wind power will cost a lot.
At present, the performance of domestically produced wind turbines is still not satisfactory, and the design standards adopted for imported wind turbines are mostly based on the wind field conditions in northern Europe. It is unrealistic and unsustainable to rely entirely on imports. Han Xiaoping, chief information officer of China Energy Network, said in an interview that although offshore wind power development is currently very promising, its development is much more difficult than onshore wind power. Offshore wind power technology is lagging behind wind power on land for nearly 10 years, and the cost is also 2 to 3 times higher. At the same time, the offshore wind power industry has a higher technical threshold than the solar energy industry. In terms of power grid support, the technology for accepting large-capacity wind power has not yet been broken, and the conflict of interests with conventional power sources has not yet been resolved. Therefore, it is still very difficult to carry out large-scale industrialization.
Experts from the China Wind Energy Association told the reporter that similar to the development of onshore wind power, technology has been one of the factors restricting the development of offshore wind power from the very beginning. First of all, the preparatory work of offshore wind farms is very complicated. It is necessary to erect a wind measuring tower of 70 meters or even 100 meters at sea, and conduct field observations on the basic conditions of the seabed topography, its movement, and engineering geology. What is more crucial is that offshore wind turbines have larger stand-alone capacity and require stricter requirements for wind turbines such as anti-corrosion, which will cause the unit to stall. Second, the environment is another problem that has to be faced. In 2006, when Typhoon Saomai landed, the Typhoon Center attacked Cangnan wind farm positively, resulting in the collapse of 28 wind turbines and almost devastating wind farms. If southern typhoon is the "first killer" of wind farm safety, then in the north, the ice on the winter sea surface will be the greatest threat to the safety of wind turbines. “The maintenance in the later period is also very important. The wind in the sea is salty, so it is very corrosive. This puts forward new requirements for the corrosion resistance of offshore wind power equipment, and also puts forward new requirements for the maintenance of the future. Therefore, it must be There are corresponding programs to solve these problems, the most important of which is that the new environment has higher requirements on the quality of the equipment," said Zhao Song.
Higher quality requirements In recent years, with the strong support of policies, through the introduction of technology, China has basically mastered the manufacturing technology of megawatt wind turbines, and initially formed a wind power equipment industrial chain with blades, gear boxes, generators, and control systems. . However, since most wind power companies re-manufacture, lightly innovate, re-introduce, and lightly absorb, the key equipment and core technologies of wind power are subject to foreign restrictions. The independent innovation capability of wind power technology has become a weakness, and the quality of equipment, especially key components, needs to be improved. In addition, with the rapid development of China's wind power industry, a large number of wind turbines have been rushed into operation. The time from the R&D to the actual operation of equipment has been greatly shortened. This has led to a series of problems in the operation of wind turbines due to insufficient technical preparation for R&D.
It is understood that although China has already realized the localization of 1 MW wind turbines and owns its own technology, if large-scale development of offshore wind power is performed, there is still a certain gap between China's 3 MW or even larger capacity fan technology and foreign countries. “Actually, offshore wind power is only slightly more recent in foreign countries in the past two years, but the technology cannot be said to have matured,†said Zhao Song. “Even if the offshore wind power is currently leading the Netherlands, it is mainly in the offshore. China’s wind power There is still a gap in equipment quality and technology compared with foreign countries, especially in the field of electrical appliances and basic materials. The quality of offshore wind power is more demanding, and we have a very small gap in these areas.†Insiders pointed out that the more large-scale Fans, the more important the quality problem, because the fan blade is large, the gear box is heavy, and the load is also large.
“Equipment reliability issues will be a huge concern for the development of wind power in China. China's wind power equipment manufacturing companies must focus on the optimization of wind power and the matching of main and auxiliary equipment. It is necessary to make great efforts to improve equipment reliability.†Expert of China Wind Energy Association Said, "China's offshore wind power must focus on capacity, but also to improve the quality of equipment, performance, level, etc." Shi Pengfei, vice chairman of the Wind Energy Professional Committee of the Chinese Renewable Energy Society, interviewed by the media pointed out that so far China's real grid The offshore wind farm is only one of the Shanghai Donghai Bridge. It has only recently been fully installed. The actual operation lasted no more than a year. It has not yet experienced the test of harsh climate. It has not been continuously improved in application and is still far from mature. It also has internationally assessed wind farms. The important indicator is the benefit of 20 years. Therefore, considering the cost of transmission and distribution to the east coast of China, will the cost of wind power be high on the sea or high on the land? This requires calm and objective measurement and reflection.
Offshore wind turbines are not necessarily the bigger the better, and the efficiency of power generation and the stability of technology are the first. Experts from the China Wind Energy Association pointed out that wind power as an emerging industry will inevitably have some problems. However, this is a problem in the development of the industry itself. It is a contradiction in the way forward, and it will take several years for the wind power industry to enter a mature period. For offshore wind power, we must not only be optimistic about its prospects but also fully understand its difficulties, adhere to the principle of quality first, and allow offshore wind power to play a greater role in the future.
More space for development Although the "answers" for the first round of tendering still need to wait, but offshore wind power has been formally "worked" in China - on July 6, as one of the highlights of the Shanghai World Expo, Shanghai Donghai Bridge wind farm all Fans are connected to the grid for power generation. The emergence of the first large-scale offshore wind farm in China and even Asia was seen as a microcosm of offshore wind power in China. Now, offshore wind power is becoming the new darling of China's wind power sector.
“The development of China's new energy industry looks at wind power, and the prospects for wind energy development are at sea. Offshore wind power will become the future direction and commanding height of wind power in China.†An expert from the China Wind Energy Association commented on the current status of offshore wind power in China. The expert said that compared with onshore wind power, offshore wind power has the advantages of stable wind energy resources, no occupation of land resources, and minimal environmental impact. At the same time, China's offshore wind resources are very abundant. According to the latest evaluation of wind energy resources, the country's land can use 300 million kilowatts of wind energy resources, plus wind energy resources available in coastal waters, totaling about 1 billion kilowatts, and the development potential is huge. At the beginning of this year, according to the detailed investigation and evaluation of China's first wind energy resources completed by the National Meteorological Administration, it was able to measure an installed capacity of about 200 million kilowatts in China's offshore waters within 5 meters to 25 meters depth and 50 meters above sea level.
The broad prospects of offshore wind power have led to fierce competition for power giants facing pressure from renewable energy quotas. Because the east coast, especially Jiangsu and other coastal areas along the beach and offshore have very good conditions for the development of wind power, major power companies “staking their way to the seaâ€, CPI, Guodian, Huadian, China Guangdong Nuclear Power, Datang, China Resources Power, Jiangsu Guoxin Group, Germany Sola CCE has been involved. “An important reason why offshore wind power is currently sought after is that there is a market.†Zhao Song, the director of the operation and control department of AVIC Heavy Machinery Co., Ltd., said, “First, offshore wind power is mainly located in the southeast coast. Most of these areas belong to the more developed regions in the domestic economy. Electricity demand is also very large, so the electricity market is very large.Secondly, offshore wind power generation is also relatively large. After all, offshore wind resources are more abundant than land, which also makes installation capacity of offshore wind power projects more expensive than onshore wind power. Big."
Updated technical difficulties With the launch of China's offshore wind power concession bid, the industry believes that 2010 will be the first year of offshore wind power development in China. Although the prospects are good, China’s offshore wind power is also facing many difficulties. In the eyes of many people in the industry, offshore wind power is like a "premature baby". It hastily emerged without being "completely developed," and there are huge risks in many aspects.
Among them, the new technical problem of offshore wind power is one of the problems that needs to be solved urgently. “Compared to onshore wind power, the environment for the use of offshore wind power is very different, which puts different requirements on wind power equipment, etc. From the technical point of view, this requirement is more demanding. From another perspective Look, in fact, it is equivalent to setting a new technical threshold." Zhao Song said, "The main features of offshore wind power are larger installed capacity, larger wind turbines, and corrosion resistance." In June this year, the World Bank also published a report specifically that Since the marine environment is far more complicated than land, solving any minor problem of offshore wind power will cost a lot.
At present, the performance of domestically produced wind turbines is still not satisfactory, and the design standards adopted for imported wind turbines are mostly based on the wind field conditions in northern Europe. It is unrealistic and unsustainable to rely entirely on imports. Han Xiaoping, chief information officer of China Energy Network, said in an interview that although offshore wind power development is currently very promising, its development is much more difficult than onshore wind power. Offshore wind power technology is lagging behind wind power on land for nearly 10 years, and the cost is also 2 to 3 times higher. At the same time, the offshore wind power industry has a higher technical threshold than the solar energy industry. In terms of power grid support, the technology for accepting large-capacity wind power has not yet been broken, and the conflict of interests with conventional power sources has not yet been resolved. Therefore, it is still very difficult to carry out large-scale industrialization.
Experts from the China Wind Energy Association told the reporter that similar to the development of onshore wind power, technology has been one of the factors restricting the development of offshore wind power from the very beginning. First of all, the preparatory work of offshore wind farms is very complicated. It is necessary to erect a wind measuring tower of 70 meters or even 100 meters at sea, and conduct field observations on the basic conditions of the seabed topography, its movement, and engineering geology. What is more crucial is that offshore wind turbines have larger stand-alone capacity and require stricter requirements for wind turbines such as anti-corrosion, which will cause the unit to stall. Second, the environment is another problem that has to be faced. In 2006, when Typhoon Saomai landed, the Typhoon Center attacked Cangnan wind farm positively, resulting in the collapse of 28 wind turbines and almost devastating wind farms. If southern typhoon is the "first killer" of wind farm safety, then in the north, the ice on the winter sea surface will be the greatest threat to the safety of wind turbines. “The maintenance in the later period is also very important. The wind in the sea is salty, so it is very corrosive. This puts forward new requirements for the corrosion resistance of offshore wind power equipment, and also puts forward new requirements for the maintenance of the future. Therefore, it must be There are corresponding programs to solve these problems, the most important of which is that the new environment has higher requirements on the quality of the equipment," said Zhao Song.
Higher quality requirements In recent years, with the strong support of policies, through the introduction of technology, China has basically mastered the manufacturing technology of megawatt wind turbines, and initially formed a wind power equipment industrial chain with blades, gear boxes, generators, and control systems. . However, since most wind power companies re-manufacture, lightly innovate, re-introduce, and lightly absorb, the key equipment and core technologies of wind power are subject to foreign restrictions. The independent innovation capability of wind power technology has become a weakness, and the quality of equipment, especially key components, needs to be improved. In addition, with the rapid development of China's wind power industry, a large number of wind turbines have been rushed into operation. The time from the R&D to the actual operation of equipment has been greatly shortened. This has led to a series of problems in the operation of wind turbines due to insufficient technical preparation for R&D.
It is understood that although China has already realized the localization of 1 MW wind turbines and owns its own technology, if large-scale development of offshore wind power is performed, there is still a certain gap between China's 3 MW or even larger capacity fan technology and foreign countries. “Actually, offshore wind power is only slightly more recent in foreign countries in the past two years, but the technology cannot be said to have matured,†said Zhao Song. “Even if the offshore wind power is currently leading the Netherlands, it is mainly in the offshore. China’s wind power There is still a gap in equipment quality and technology compared with foreign countries, especially in the field of electrical appliances and basic materials. The quality of offshore wind power is more demanding, and we have a very small gap in these areas.†Insiders pointed out that the more large-scale Fans, the more important the quality problem, because the fan blade is large, the gear box is heavy, and the load is also large.
“Equipment reliability issues will be a huge concern for the development of wind power in China. China's wind power equipment manufacturing companies must focus on the optimization of wind power and the matching of main and auxiliary equipment. It is necessary to make great efforts to improve equipment reliability.†Expert of China Wind Energy Association Said, "China's offshore wind power must focus on capacity, but also to improve the quality of equipment, performance, level, etc." Shi Pengfei, vice chairman of the Wind Energy Professional Committee of the Chinese Renewable Energy Society, interviewed by the media pointed out that so far China's real grid The offshore wind farm is only one of the Shanghai Donghai Bridge. It has only recently been fully installed. The actual operation lasted no more than a year. It has not yet experienced the test of harsh climate. It has not been continuously improved in application and is still far from mature. It also has internationally assessed wind farms. The important indicator is the benefit of 20 years. Therefore, considering the cost of transmission and distribution to the east coast of China, will the cost of wind power be high on the sea or high on the land? This requires calm and objective measurement and reflection.
Offshore wind turbines are not necessarily the bigger the better, and the efficiency of power generation and the stability of technology are the first. Experts from the China Wind Energy Association pointed out that wind power as an emerging industry will inevitably have some problems. However, this is a problem in the development of the industry itself. It is a contradiction in the way forward, and it will take several years for the wind power industry to enter a mature period. For offshore wind power, we must not only be optimistic about its prospects but also fully understand its difficulties, adhere to the principle of quality first, and allow offshore wind power to play a greater role in the future.
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