On the 27th, the "China-Dutch Offshore Wind Power Exchange Conference" sponsored by the National Energy Administration was held in Nanjing. This exchange will bring a wake-up call to domestic wind power companies: Over 10 years of experience in offshore wind power development in Europe may not be fully replicated in China. Domestic wind power industry should learn to “discard†and understand that “technology is the absolute principleâ€.
Because offshore wind power is characterized by abundant resources, high hours of power generation and utilization, no land occupation, no consumption of water resources, and suitable for large-scale development, European and American countries have begun to shift the focus of wind power development to offshore wind power in recent years. As of 2011, there are 15 offshore wind farms in Europe with a generating capacity of over 100 MW. According to the plan of the German government, German offshore wind power will account for 25% of the entire wind power generation in the future.
“China’s development of offshore wind power can not repeat the mistakes Europe has made in the past.†Pu Aibo, a new energy expert from the Netherlands, said: “The Netherlands is the first country in the world to develop offshore wind power and has more than 10 years of experience and lessons. Onshore wind power, offshore wind power construction costs are large, the construction environment is complex, and the technical requirements are even higher.A few years ago, after a period of time when a 2 megawatt offshore wind turbine from a well-known European wind turbine manufacturer had been operating for a period of time, a number of motor insulation faults occurred. Forced to repair and replace."
Shi Lishan, deputy director of the New Energy Division of the National Energy Administration, said that China's offshore wind power resources are very rich, and the amount of offshore shallow water resources that can be exploited is about 200 million kilowatts. The state has already proposed the goal of offshore wind power development and will build 5 million kilowatts in 2015. However, although the development of offshore wind power in Europe has reference significance for China, not all experience is worth following. For example, the situation in Europe at sea is very different from that in China. Europe is not cold in winter and hot in summer. Their designed survival temperature is minus 25 degrees, but this is far from enough in China.
Longyuan Power Group Co., Ltd. is the largest wind power company in China. As of the end of last year, Longyuan Power Wind Power Holdings had an installed capacity of 8.556 million kilowatts, ranking the third in the world. Zhang Gang, general manager of the company, said with emotion that “exploring the development of offshore wind power is the most difficult part of the bones.†If the tidal flats in the intertidal zone are soft and soft, it would be hard to step on the beach with a few steps. The beach surface will liquefy into a “paste-like†form, and heavy machinery will have no place on the beach. After more than two years of research, they have developed a shallow draft dredging beach barge that is specially used for intertidal wind power construction. It is impossible to make the construction of intertidal wind power. In May of last year, an 800-ton full-rotation crane ship suitable for intertidal and shallow-sea wind power construction was put into use. This special vessel enabled offshore wind power to enter the stage of scale development from a small-scale test. Allegedly, the development of these special equipment can reduce the construction cost of offshore wind power by about 25%. After the new equipment such as jack-up lifting vessels under development is put into use, the cost of offshore wind power construction will be further reduced.
It is understood that the cost of developing offshore wind power is a major obstacle. Although offshore wind power generates more electricity than land-based wind power, its construction and maintenance costs are twice that of the latter.
In order to withstand strong winds and seawater, offshore wind turbines must be more sturdy; due to their distance from the coast, their maintenance also requires special equipment and transportation tools. Not only that, the cost of subsea drilling is more expensive, and connecting offshore wind farms to the land grid also requires additional costs. Xie Hongwen of the Water Conservancy and Hydropower Planning and Design Institute said that the current domestic offshore wind farm unit kilowatt investment is about 16,000 to 19,000 yuan, and the electricity price level is about 0.85 yuan per kilowatt-hour. "With future offshore wind turbine technology, construction equipment and construction levels With a substantial increase in the cost of offshore wind farms, the cost of investment will drop. By then, the price of offshore wind farms will be further reduced."
Experts pointed out that for both Chinese and European companies, we must follow the concept of equipment and technology first before we can really develop the emerging industry of offshore wind power. As a offshore wind power base of 10 million kilowatts in Jiangsu, offshore wind power installed capacity increased by 100,000 kilowatts in 2011, and the scale of offshore wind power grid connection has exceeded 130,000 kilowatts. Coupled with the economic development of the coastal areas, the power grid has a strong ability to accept wind power, there is no power consumption problem, which also provides a convenient condition for offshore wind power development.
Because offshore wind power is characterized by abundant resources, high hours of power generation and utilization, no land occupation, no consumption of water resources, and suitable for large-scale development, European and American countries have begun to shift the focus of wind power development to offshore wind power in recent years. As of 2011, there are 15 offshore wind farms in Europe with a generating capacity of over 100 MW. According to the plan of the German government, German offshore wind power will account for 25% of the entire wind power generation in the future.
“China’s development of offshore wind power can not repeat the mistakes Europe has made in the past.†Pu Aibo, a new energy expert from the Netherlands, said: “The Netherlands is the first country in the world to develop offshore wind power and has more than 10 years of experience and lessons. Onshore wind power, offshore wind power construction costs are large, the construction environment is complex, and the technical requirements are even higher.A few years ago, after a period of time when a 2 megawatt offshore wind turbine from a well-known European wind turbine manufacturer had been operating for a period of time, a number of motor insulation faults occurred. Forced to repair and replace."
Shi Lishan, deputy director of the New Energy Division of the National Energy Administration, said that China's offshore wind power resources are very rich, and the amount of offshore shallow water resources that can be exploited is about 200 million kilowatts. The state has already proposed the goal of offshore wind power development and will build 5 million kilowatts in 2015. However, although the development of offshore wind power in Europe has reference significance for China, not all experience is worth following. For example, the situation in Europe at sea is very different from that in China. Europe is not cold in winter and hot in summer. Their designed survival temperature is minus 25 degrees, but this is far from enough in China.
Longyuan Power Group Co., Ltd. is the largest wind power company in China. As of the end of last year, Longyuan Power Wind Power Holdings had an installed capacity of 8.556 million kilowatts, ranking the third in the world. Zhang Gang, general manager of the company, said with emotion that “exploring the development of offshore wind power is the most difficult part of the bones.†If the tidal flats in the intertidal zone are soft and soft, it would be hard to step on the beach with a few steps. The beach surface will liquefy into a “paste-like†form, and heavy machinery will have no place on the beach. After more than two years of research, they have developed a shallow draft dredging beach barge that is specially used for intertidal wind power construction. It is impossible to make the construction of intertidal wind power. In May of last year, an 800-ton full-rotation crane ship suitable for intertidal and shallow-sea wind power construction was put into use. This special vessel enabled offshore wind power to enter the stage of scale development from a small-scale test. Allegedly, the development of these special equipment can reduce the construction cost of offshore wind power by about 25%. After the new equipment such as jack-up lifting vessels under development is put into use, the cost of offshore wind power construction will be further reduced.
It is understood that the cost of developing offshore wind power is a major obstacle. Although offshore wind power generates more electricity than land-based wind power, its construction and maintenance costs are twice that of the latter.
In order to withstand strong winds and seawater, offshore wind turbines must be more sturdy; due to their distance from the coast, their maintenance also requires special equipment and transportation tools. Not only that, the cost of subsea drilling is more expensive, and connecting offshore wind farms to the land grid also requires additional costs. Xie Hongwen of the Water Conservancy and Hydropower Planning and Design Institute said that the current domestic offshore wind farm unit kilowatt investment is about 16,000 to 19,000 yuan, and the electricity price level is about 0.85 yuan per kilowatt-hour. "With future offshore wind turbine technology, construction equipment and construction levels With a substantial increase in the cost of offshore wind farms, the cost of investment will drop. By then, the price of offshore wind farms will be further reduced."
Experts pointed out that for both Chinese and European companies, we must follow the concept of equipment and technology first before we can really develop the emerging industry of offshore wind power. As a offshore wind power base of 10 million kilowatts in Jiangsu, offshore wind power installed capacity increased by 100,000 kilowatts in 2011, and the scale of offshore wind power grid connection has exceeded 130,000 kilowatts. Coupled with the economic development of the coastal areas, the power grid has a strong ability to accept wind power, there is no power consumption problem, which also provides a convenient condition for offshore wind power development.
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