Mechanical Seals Manufacturer In China » wind power http://www.hfanlx.cn Professional Mechanical Seals,Rubber Mechanical Seals、Carbone Sealts In China Fri, 03 Sep 2010 09:40:57 +0000 http://wordpress.org/?v=2.8.2 en hourly 1 Beijing wind power electricity price 0.61 yuan per kWh http://www.hfanlx.cn/archives/193 http://www.hfanlx.cn/archives/193#comments Fri, 03 Sep 2010 09:40:46 +0000 admin http://www.hfanlx.cn/?p=193 According to the policy, the future of wind power electricity price in Beijing determined to be 0.61 yuan per kWh. This is also the National Wind Power Pricing of the highest standards.
In the past, electricity price for wind power, developed around the different standards, to some extent the confusion caused by the price of wind power. In order to regulate the price of wind power management, and promote sustained and healthy development of wind power generators industry, the National Development and Reform Commission on the wind electricity price for a unified standard. Wind energy resources by state and engineering construction conditions, the country is divided into four wind energy resource areas, new land-based wind power turbines projects in the future electricity price will be 0.51 yuan per kilowatt-hour and 0.54 yuan, 0.58 yuan and 0.61 yuan implementation.
Beijing Municipal Development and Reform Commission, said the documents forwarded the NDRC, Beijing is a fourth category set by the state wind resource area. This means that wind power will be the highest standard benchmark electricity price, which is the implementation of 0.61 yuan per kWh.
The document also requests the unit to a true and complete record and preserve the power of wind power projects online transactions, price and amount of subsidies, etc., to ensure the implementation of wind generator electricity price policy in place.
It is learned from the new regulations have been implemented on August 1 this year. Prior to approval of wind power projects, electricity price based upon the existing regulations.

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]]> http://www.hfanlx.cn/archives/193/feed 0 Direct drive wind power system grid inverter http://www.hfanlx.cn/archives/189 http://www.hfanlx.cn/archives/189#comments Tue, 31 Aug 2010 14:21:46 +0000 admin http://www.hfanlx.cn/?p=189 To reduce the inverter with output current of the harmonic, using the space vector pulse width modulation. According inverter with synchronous rotating coordinate system in the mathematical model, the grid voltage vector oriented vector control and d, q axis current loop control to achieve the d, q axis current decoupling control: d-axis current control active power, q-axis current control reactive power. Simulation and experimental results verify the feasibility and correctness.
Keywords: space vector pulse width modulation [5] grid voltage vector orientation [2] the current loop [2] decoupling control [3]
With the deterioration of the natural environment and the increasing depletion of the daily energy, wind power energy structure in the future occupy an increasingly important position, wind power technology to become the research hotspot countries [1-5]. Between the wind turbine and generator speed matching is a key issue, low-speed operation of wind turbine and the wind generators is accelerated through a common gear box connection. Expensive high capacity gearbox, high failure rate, maintenance difficulties, so wind power gear box has become the bottleneck of the further development of the system [6-8]. Development of direct drive wind power system to improve system efficiency and reliability of an effective way.
In VSCF wind power system, grid electrical grid-connected inverter is the heart. Inverter with pulse-width modulation (pulse width modualtin, PWM) control technology, with output current is sinusoidal and low harmonic content, power factor adjustable and fixed output voltage power grid under the DC bus voltage regulation, etc [9 -10], in the new energy and power generation plays an important role in the control strategy has been studied. [11] detailed analysis of the steady-state DC inverter model, low frequency small signal model and high-frequency small-signal model, these models because of their complex and difficult to apply control. [12] The instantaneous active and reactive closed-loop control, but there is no current loop and PWM modulation module, but by active and reactive power for a given error and feedback selector switch table, the method uncertainty kept switching frequency , so its hard to filter circuit is difficult to design and the need for high-speed A / D converter. Literature [13-15] The amplitude and phase control, but more complex control algorithm.
This article is derived in detail and wind power system network model inverter with space vector pulse width modulation (space vector pulse width modulation, SVPWM) method and the grid voltage vector oriented control strategy, using d, q axis current loop, to achieve active and reactive power decoupling control.

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]]> http://www.hfanlx.cn/archives/189/feed 0 French construction of large offshore wind power base http://www.hfanlx.cn/archives/187 http://www.hfanlx.cn/archives/187#comments Sat, 28 Aug 2010 13:07:56 +0000 admin http://www.hfanlx.cn/?p=187 France in September to tender construction of 3,000 megawatts of offshore wind power generators base, wind power base will be built in the Loire Valley, Brittany North, Poulenc and more – Shandong Yong and the Normandy coast, around the bend of the river Seine and Suomo bend to avoid the destruction of landscapes and shipping. 3,000 MW of generating capacity equivalent to two EPR nuclear power plant generating capacity. French wind generators and environment ministry introduced the investment of about 15 billion -200 billion euros.
This large-scale wind turbine generator base in a long construction period, the first wind power installed capacity to wait until after the second half of 2015. This large-scal

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]]> http://www.hfanlx.cn/archives/187/feed 0 Tianjin First Wind Power Transmission Project began operations http://www.hfanlx.cn/archives/176 http://www.hfanlx.cn/archives/176#comments Tue, 17 Aug 2010 09:10:50 +0000 admin http://www.hfanlx.cn/?p=176 Binhai New Area to ensure that clean energy development strategies, by the municipal Electric Power Company over Dan Wei Deng Coastal Power subsidiary to work together, manholes child wind power generators cord into the device works through the audit tender stage, the project for the further successful implementation of the Dianding the foundation. This is the city the first Wind Power Transmission Project.

Shajingzi wind farm is located in Dagang peaceful village. Plans to install 33 sets of 1500 kW unit capacity of domestic wind turbine, a year after completion of the project will provide clean energy to local 101,475,000 kwh. With the same amount of thermal power generation compared to annual savings of nearly 40,000 tons of standard coal, 21 million cubic meters of water conservation, and can significantly reduce carbon dioxide, sulfur dioxide emissions to the air,wind generators improve the atmospheric environment can play a positive effect. The project is expected by the end of grid.

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]]> http://www.hfanlx.cn/archives/176/feed 0 Day one-stop development of clean wind power group http://www.hfanlx.cn/archives/167 http://www.hfanlx.cn/archives/167#comments Sun, 08 Aug 2010 09:04:14 +0000 admin http://www.hfanlx.cn/?p=167 Sources in the Inner Mongolia Wind Xing’an League Tuquan day, day of clean production and installation of two groups of “big windmill” has rotating six months. After a series of technical inspection confirmed that the two wind turbines operating in good condition.

Last November, days Jie Group and China State Power and the air damper joint venture power company electricity and clean wind energy in Inner Mongolia China Co., Ltd., responsible for the development of Inner Mongolia Hing’an one million kilowatts wind farm, the first phase of 49,500 kilowatts wind farm has been issued Inner Mongolia Autonomous Region and Reform Commission approval, will and wind power generator . This is the day cleaning the Group formally approved the first wind farm project.

To speed up the progress of construction days, the source wind farm, days cleaning the Group invested nearly 600 million yuan, the first production base in the brand new wind turbine on the production line; in Tuquan invest 150 million yuan, professional wind generators manufacture wind tower fan cylinder to reduce transportation costs. By the end of December this year, days source wind farm a total of 35 wind turbines will be installed into operation.

So far, Tin Kit Group in Inner Mongolia Hing’an and Tongliao City, Ningxia Wuzhong City, Pinghu, Zhejiang, Wenzhou and has made nine million kilowatts wind farm development rights, and is carrying out wind, the wind project resource allocation, approval processing, etc. preliminary work to develop an annual rate of more than 300,000 kilowatts for wind farm development.

Days cleaning group dedicated to wind turbines R & D, manufacturing and production, the key manufacturing TJ1500 kW pitch moment VSCF wind turbine, and is committed to providing customers with real fans, “turnkey” project, on the whole fan equipment design, manufacturing, transportation, installation guide, commissioning, operation and maintenance of overall responsibility for guidance. Wind energy company with professional institutes, and universities in Shenyang, Shanghai, Yu-feng small wind turbines research institute closely with domestic and foreign research institutions, with more than 80 professional R & D personnel and 50 pieces (sets) advanced experimental research equipment.

Group General Manager Yu Jie-day side that, as clean energy, wind power generation in the world with an average annual increase rate of 30%, China’s faster, more than 70%. The next three years, space research and development of clean wind power to 3,000 kilowatts and above wind turbine, the formation of annual production in 5 years, more than 1,000 MW of wind power generating units of the national large-scale equipment manufacturing base of wind power in 10 years become one of the pre-manufacturing industries top three.

March to the new energy industry, while cleaning the Group to further enlarge and strengthen day environmental protection equipment industry. Late last year, days of cleaning the Group invested in Zhejiang Environmental Science and Technology Co., Ltd., was originally from the Group’s environmental pollution prevention and control She Bei Jing Ying’s contract, design, home wind turbines manufacture, installation Ye Wu constructed a new professional platform and team, enables companies to more professional more focus on integration of professional, technical, financial and other resources, environmental protection equipment for the development, production, installation.

This year from January to June, days clean energy output of new environmental protection group reached 3.029 billion yuan with a profit of 171 million yuan, tax paid 54.38 million yuan, both up 10% year on year. Even more gratifying is that in the first half-day group active in clean technology innovation, optimizing industrial structure, and comprehensive energy consumption of 3.14 million tons, 10 thousand yuan output value dropped 10.07% year on year energy consumption.

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]]> http://www.hfanlx.cn/archives/167/feed 0 China’s offshore wind power in the dark forward http://www.hfanlx.cn/archives/165 http://www.hfanlx.cn/archives/165#comments Fri, 06 Aug 2010 08:56:07 +0000 admin http://www.hfanlx.cn/?p=165 Shanghai East Sea Bridge, near the sea, there are 34 30-storey wind turbines. They have just installed this year in February. National Energy Board new energy and renewable energy Tateyama Deputy Secretary Nagao recently heard that the wind farm will be fully integrated into power in mid-June. This is the first offshore wind farm demonstration project is Asia’s first large-scale offshore wind farm. Each fan capacity of 3 megawatts (MW), a total of 102MW, will be able to provide electricity to 40 million homes.
Next we will see a second, third, etc., at the beginning of a national energy conference, the National Energy Secretary Zhang in “2010 the overall energy requirements and tasks of work,” said: “2010, to continue promote large-scale wind power base construction, particularly offshore wind power to be carried out together. “Subsequently, the National Energy Board and the State Oceanic Administration jointly issued the” development and construction of offshore wind Interim Measures “, making the government and enterprises in carrying out offshore wind power generator plan and investment began to rule-based. And National Energy Board announced recently will start the first round of offshore wind power concession bidding, which means countries are about large-scale development of offshore wind power. Sources said the project will be located in Jiangsu and Shandong, including two 300MW of tidal capacity of power plants and 200MW of offshore capacity of two power stations with a total capacity of 1 gigawatt (GW).
2010, known as the first year of China’s offshore wind generator . In fact, the country has not yet decided which to develop offshore wind power before, beginning in 2005, many of energy enterprises have been the central coastal provinces started taking, and the local government signed a “framework of the development agreement” after a few years for development of offshore wind energy resources offshore Basic waters have been “among themselves.” Bureau of Energy, “starting gun” ring, all of the energy companies began to speed up and wind resources in the city’s government access. At the same time, the parties came to the East China Sea Bridge and the soon to be launched in the new field offshore wind power project of many questions and controversies, such as lack of previous research and demonstration, the quality of suspicious domestic fans, and other network problems exist. Offshore wind power in the global pattern of development, China is the latecomers, but not weaker than the development of impulsive pioneer. Agitation in the industry, the policy level, to show caution.
Many countries competing to send offshore wind power
In the new pattern of energy development, solar and wind power has been a top priority. In a number of experts, the offshore wind wind Zi Yuan more than the land-based wind power is more stable, does not occupy the land resources, influenced by the surroundings and small, and that vast region has great potential, especially for those with an extensive coastline of the country It is rich, a quality and clean new energy. Therefore, many countries have long realized the strategic significance of offshore wind power, and actively developed. Which the EU is a pioneer in the development of offshore small wind turbines , both in the number of wind farms have been built or maturity of the technology in both the global leader in the United States is also a decade of disputes this year, after April as the first offshore wind energy projects, “Cape Wind” release.
Denmark is the first offshore wind power development in countries. Since the late 70 century, the energy crisis, Denmark and the United States, Japan, Germany and other countries began to develop new energy sources. From land-based wind began: in government subsidies under the 25-55 kilowatts (KW) of the small fan gradually occupy the market, while market demand for some machinery manufacturing enterprises in developing large-scale commercialization of fans — since the 1980s, Denmark Lu upwind electric fan has been installed more than 6,000 units, many fans replaced with a larger fan capacity. 90 years of the 20th century, to expand the scale of wind power, Denmark began to develop offshore wind power market. 1991, Denmark created the world’s first offshore wind farm, but mainly for experimental exploration. In 1996, Denmark had invited the two to establish the form of about 160MW of offshore wind demonstration project has been put into operation. After years of Danish wind power development, a single fan power has been achieved from the following 1MW 3MW, 5MW fan of technology is already mature. Today, Denmark already has nine offshore wind turbines farm, 305 fans, and has trained such as Vestas, offshore wind power project in the design, installation, commissioning and maintenance of a mature technology and rich experience leading companies .
Britain is the rising star of the field of offshore wind power, it has 12 offshore wind farm, Fan 287, Click to potential development may soon be over Denmark. In addition, Sweden, the Netherlands, Germany 7 European countries have offshore wind power technology. EU countries the pace of development of offshore wind power is increasing. According to the European Wind Energy Association, in 2009 the Taiwan Strait on the European installation of 199 wind turbines with a total capacity of 577MW, while in 2008 this figure was 373MW. In 2009, the European offshore wind industry turnover is about 15 billion euros, is expected to double by 2010. Nine European countries have decided to jointly develop North Sea wind energy resources and create worth 300 million euros (240 billion yuan) of renewable energy network. At present, European countries, more than 100GW of offshore wind power projects are being planned.
Offshore wind power industry in China triggered agitation
China has reached 18,000 km coastline of China, the development of offshore wind power is vast. Some experts in China more than 900 stations under 10 meters height data were preliminary, and that China could be the development and use of offshore wind turbine generator energy reserves of about 750 million KW. Now the development of wind power on land space is running out, last year because of the way wind power industry is overheating, even the fan manufacturing overcapacity situation, in this context, the development of offshore wind power a matter of course. Moreover, the offshore wind farm closer to a more intensive use of electricity in eastern, inland wind power can be relatively large number of transmission cost savings, more practical significance.
In fact, the major energy companies for offshore wind power market value has long coveted. Donghai Bridge in Shanghai as early as the time of tendering the project, there Datang, China Guangdong Nuclear, China Power Investment, Shanghai green energy, Three Gorges, CNOOC, the applicant can, Huadian Group and other energy giants to bid. Although the final withering Datang Commonwealth, but lost the energy giant has not given up offshore wind power.
Second half of 2005 the major energy companies, started a raging fire, wind, Happy Valley Circle, the major power giant and local governments have signed a strategic agreement massive offshore wind power. For example, there are media reports, Guohua Energy and signed an open Dongtai build 4 million KW of large offshore wind power project agreement, the agreement planned total investment of 90 billion yuan. China Long Yuan Electric power to admit States Longyuan and local governments also signed a large number of offshore wind power on the framework agreement, currently the company’s offshore wind power base throughout the Jiangsu, Zhejiang, Fujian, Guangdong and other coastal cities. “The total amount of the agreement 100 000 000 000 -1 500 billion.”
It was said that the energy companies offshore enclosure, is that in February 2005 enacted the “Renewable Energy Law”, which provides that “power grid enterprises should be in full acquisition of the network coverage and network within the renewable energy power generation projects online . ”
Power Group is facing the same time to complete the quota of renewable energy generation pressure, for the Power Group, the state’s intention to request more than 5 million KW installed capacity of power generation companies, in 2010, in addition to water and electricity production with renewable energy, other renewable energy quota of 3% will have to reach 8% in 2020. This year the national focus on developing offshore wind power, is going to put the news of the concession tender has just introduced, although not yet officially implemented, many of energy enterprises have started contacts with the local government to express investment interest. Jiangsu’s Yancheng, Nantong, Dafeng and other cities are planning for offshore wind resources are concentrated in cities, local governments of these cities to the media that the company received a large number of “lobbyists.”
In addition, the Ministry of Industry and released on March 26 a “wind power equipment manufacturing industry access standards” (draft), on the wind power equipment manufacturers specifications. “Standard” provides wind turbine manufacturers must have the production capacity of 2.5MW and above stand-alone, annual production of 1 million KW or more conditions necessary for the production and all production facilities. Current domestic production of wind power machine has reached 80 companies, can meet this standard is only 10 or so vendors, including Sinovel, Goldwind, Hunan Electric wind, Dongfang Electric, State Power of the United Power, Ship Heavy Industry, Guangdong Ming Yang, Suzlon, Vestas, China Electrical Instrument.
Because the offshore wind power concession project bidding, will take “bundling” tender manner, about the project developers, wind power equipment manufacturers and professional installation of the three companies jointly tendering, many resource-rich offshore wind city also started the construction of wind power industrial park, the wind power equipment business also started to have settled.
Construction of offshore wind power are still many questions
While energy companies eager for offshore wind power development in China, there are multi-party disputes. “We are ready to offshore wind power was inadequate,” the Chinese Wind Energy Association, De-xin, said, “beach land area of the wind farm construction, high-power wind turbine reliability problems (no solution), a lot of basic work none of us do. “Chinese Academy of Engineering Ni said:” wind power resources from the investigation, wind, planning, layout, installation of fans on this basis, Internet access, delivered to end users, fans manufactured from gear boxes, bearings, blades, control systems, operation, this is a very long chain. “The complexity of the domestic offshore wind power industry chain, in many areas of technology and operations are not mature. For domestic offshore wind power development challenge the status quo include the following aspects.
Early studies demonstrated lack of existence of various risks. Offshore wind farm construction are conducted prior to the wind operating conditions set conditions, site conditions, environmental conditions, including a number of investigations. Such as Denmark’s offshore wind power management, the first asked the applicant to pass on the wind, ocean currents and undersea A survey of the proposed the building programs, building programs to Tijiao the environmental impact assessment report. Secondly, through public participation on environmental impact assessment reports and other technical documentation review and questions from the Danish Energy Board for approval before beginning projects. And domestic, such as the East China Sea Bridge wind farm, did not first obtain census data on wind resources to start construction, is under construction, while data collection, site of scientific compromised, which would have a greater impact power generation efficiency. Surveying equipment, such as domestic wind tower wind can not meet the corresponding technical requirements. Many tenders have not fully listen to opinions from various sectors, such as wind field for the fishing, shipping, and military influence, it has not been fully taken into account may lead to future multi-party conflict of interest.
The reliability of domestic equipment and technology challenged. East China Sea Bridge wind farm with a large fan-made fan Rui Hua, lower part of the cost. However, technical sources, because of the particularity of offshore wind environment, the corrosion resistance of the fan, deal with the impact of waves and typhoons have a higher performance requirements. And according to the scientific research procedures, the general need for offshore wind turbine prototype test run first on land and then to the sea, from prototype to production run at least a year’s time. The Hua Rui and other domestic turbine manufacturers also began to fan the production of four or five years, production of sea fan is a recent thing, and its fans have been installed directly on the sea, its reliability, durability is questionable. And the reason is because the sea climate, sea fans need maintenance and repair difficult technology, and domestic enterprises in this area is still relatively backward technology.
And network problems unresolved. Although offshore wind power over land-based wind power and stability, but there are voltage fluctuations, flicker and other random fluctuations in the power grid to its carrying capacity is limited. The rapid development of wind power on the grid on land put forward higher requirements, the growth of wind power has not fully integrated into network planning, it was even said, “to promote wind power development has become a key link.” Offshore wind power development plan, to a large extent depend on their own network capacity to accommodate how much growth. Even on the smart grid research in Europe and the United States has more than 20 years, but did not completely solve the large-scale wind power problem.
Alleged that on May 18 from the home wind turbines National Energy Board has started issuing the business plan to the enterprise 4 months of lead time, the tender was held in September this year. Probably because of the existence of many disputes, the bidding was relatively cautious, relatively small size of the tender, the tender bids, the quality of equipment, operation stability and other constraint areas in detail. Positioning of these projects is still a “pilot” and “demonstration projects.” China’s offshore wind power, or at the exploratory stage in the front row.

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]]> http://www.hfanlx.cn/archives/165/feed 0 Italian Group leader in the European wind power expensive http://www.hfanlx.cn/archives/159 http://www.hfanlx.cn/archives/159#comments Mon, 02 Aug 2010 09:20:35 +0000 admin http://www.hfanlx.cn/?p=159 European Wind Energy Association recently released a research report, the German energy giant agreed Aung Group (E. ON) in the first half of the 118 total building wind generators farms, to become the fastest expansion of the EU wind power business enterprises.
The first half of this year, E. ON successfully installed the first offshore wind farm in Germany Alpha Ventus, the project installed capacity of 18 million kilowatts, then had caused no small stir. In addition, E. ON is also a large array of wind power projects in London (London Array) of the main builders. Under construction in the London Array project is expected to be fully operational by 2015 when the installed capacity of up to 1 million kilowatts, E. ON is responsible for 64% of project construction.
As Germany’s largest energy company, E. ON wind began to get involved early on, since 2001, E. ON has been accumulated in the field of wind turbines investment of 1.2 billion U.S. dollars.

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]]> http://www.hfanlx.cn/archives/159/feed 0 Yucheng wind power, “China chip” into Europe and the United States http://www.hfanlx.cn/archives/153 http://www.hfanlx.cn/archives/153#comments Tue, 27 Jul 2010 14:44:37 +0000 admin http://www.hfanlx.cn/?p=153 Recently, high-tech zones in the city of Tong Yu Yu Heavy Industry Co., Ltd. (hereinafter referred to as “General Yu Heavy”) project bases that support a group of hundreds of megawatts of wind power generator to prepare the factory spindle products are loading. “This year, we have successfully opened up the European high-end market.” Tong Yu-Sun Shuhai Heavy heavy equipment workshop director, said, “These high-power wind power spindle is designed for Spanish Kaemi Sa, GE and other U.S. customers order custom-made products. ”
It is understood that large-scale wind turbine spindle is the key system components, due to “high Strength” feature, known as “the heart of wind power”, its value-added components than large-scale equipment manufacturing nearly 2 percent, can be described as heavy “core.” Once the bottleneck due to heavy dependence on imported technology, “technology hollowing out” of a small wind turbines manufacturing industry in our pain.
In 2009, China ranked the world’s wind power installed capacity of the top three, but most companies do not have core technology and the role just as assembly plants including wind power spindle equipments including large-scale wind energy industries most heavily dependent on imports.
According to insiders, through self-developed margin Heavy 1.5 trillion -5 MW wind turbine main shaft has reached the international advanced level both at home became the first production of 3 MW or more axis of the enterprise.
Before finalizing the purchase agreement, GE had sent a special representative to visit the United States, on the selected materials, products strictly. It is understood that only the energy and materials sectors, Tung Yu Heavy fuel furnace heat treatment wind generators process for industrial use of natural gas to the thermal efficiency of 10%, the United States is very satisfied customers. Tong Yu GE Heavy thus successfully become a strategic partner the United States, for the wind power industry, “China chip” to open the European and American high-end market.

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]]> http://www.hfanlx.cn/archives/153/feed 0 eed to seize the commanding heights of wind power development opportunities and challenges face http://www.hfanlx.cn/archives/148 http://www.hfanlx.cn/archives/148#comments Tue, 20 Jul 2010 10:00:09 +0000 admin http://www.hfanlx.cn/?p=148 “At present, China’s wind power turbines development much faster than expected, has entered the fast lane.” Wind power more than 20 years of experience in the Long Yuan Electric Power Group (hereinafter referred to as “Long Yuan Electric Power”), Chief Engineer, Xiao-Sheng Yang said that with the recent to a large number of wind turbine development, wind power has been shown to replace oil, coal and other fossil energy has great potential.
By the end of 2009, China’s wind power generator installed capacity in 4 consecutive years of growth to double, the first over Germany, ranked second in the world. “Great efforts to develop wind energy, not only is our response to the needs of global climate change, but also improve China’s energy structure and maintain the sustainable development of China’s energy industry needs.” Xiao-Sheng Yang said.
He said that the overall level of China’s wind power development with the world advanced level not very different. Seize a new wave of energy development, to gain the advantage in the international community demonstrated great power influence, China’s wind power in terms of responsibility practitioners.
Three major market opportunity
“Along with the rapid development of wind power industry, home wind turbines manufacturing industry has ushered in a rare development opportunity.” Xiao-Sheng Yang said, “If the goal of wind power installed capacity has been adjusted to ‘2020, 150 million kilowatts installed capacity’, that corresponding to the value of wind power equipment can reach about 750 billion yuan. ”
As he expected, the wind power market to attract this big cake, the resources have been transferred to the fan manufacturer. According to statistics, China’s wind turbine machine manufacturers have more than 80. Xiao-Sheng Yang believes that only through intense market competition, enterprises can accelerate the digestion and absorption of the advanced pace of wind energy technology, while encouraging continued research and innovation enterprise, manufacturing high quality fan.
He also thinks that the rapid development of wind power state for wind power technology in China and is also a rare opportunity for development. It is reported that since 2004, the state and the introduction of wind power businesses to invest in technology to carry out innovative research, and the acquisition cost of the test facility has more than 1 billion yuan, the current number of new scientific and technological achievements for the wind stream.
He also believes that wind energy technology should be at the current level of excellence, should be further strengthened basic research and materials technology research efforts to improve the quality and unit operation equipment availability, create and perfect with independent intellectual property rights brand unit.
In his view, the rapid development of China’s wind power challenges posed by the grid, actually facing the development of an excellent network opportunity. “150 million kilowatts of small wind turbines installed capacity, and finally issued by the power to conduct Absorptive and delivery to the user, which itself is a great opportunity.”
He believes that this is precisely the power to conduct large-scale development and the corresponding transformation of the perfect opportunity, “in the course of development of wind power, power grid construction will be enriched and strengthened to become involved in many business types, business has been expanded . can be expected in the future most likely benefit from grid enterprises. “Xiao-Sheng Yang said.
Face three major challenges
“Behind the rapid development of wind power, the same three issues deserve our attention.” Xiao-Sheng Yang respect, first of all power and wind power are not supporting the issue.
Most of China’s wind energy resources, distribution of points in the northwest, north, northeast and other regions, far from the eastern load centers. “Although the” Renewable Energy Law “provides that the acquisition of its power grid enterprises should cover the full range of renewable energy projects in the electricity grid and provide Internet services. But there are still difficulties currently running, sent by the constraints of wind power . ”
As Xiao-Sheng Yang said, now in Gansu, Inner Mongolia and other places, although some wind farms have been built, unit commissioning has been completed, but power was not complete in the strong seasonal wind, wind power can not be networked, fans had to stop or part of the shutdown.
“According to incomplete statistics, the major vertical wind turbines business in 2008 due to limited electrical power lost about 372 million kwh of electricity, in January 2009 to May lost about 615 million kwh of electricity. Second half of 2009 power loss even worse. power despite increased efforts to complete construction, but because of rising construction speed of wind power in general loss of power is increasing. “Xiao-Sheng Yang says.
Secondly, he thinks I made the quality of the wind turbine needs to be improved.
At present, the problem of poor quality of domestic equipment has been gradually exposed, “the two years in 2007,2008, our wind generators farm by domestic equipment deliveries are on time, not complete, unit commissioning a long time, tune out the crew pass Run assessment, fans and other items can not put into troubled time. Even if wind put into operation, there is also many times the quality and technical problems in leaf fracture, crack wheel, gear box failure, electrical failure, etc.. “In his view years, as less than the quality of mechanical equipment, failure of the high rate of real quality has not been fully exposed, the greater challenge is yet to come.
Finally, he considered relevant to the current field of wind energy regulations, policies, and industry services to be improved.
He said that although China has promulgated the “Renewable Energy Law”, but need refinement, need further provides that the parties wind power industrial chain of responsibility and obligation.
He also stressed that, although the Woguo on wind power design Zixunjigou, academic organizations, associations organizations, Xin Xi intermediary Renzhengshiyan Yijizhuanye Yunxingweixiu Deng Ye wind power service agencies have Jian Li, and play an increasingly important catalytic role but now all Tiji not perfect, the authority of the relevant services, coordination, and credibility are to be improved.

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]]> http://www.hfanlx.cn/archives/148/feed 0 Five risks facing the offshore wind power http://www.hfanlx.cn/archives/130 http://www.hfanlx.cn/archives/130#comments Sat, 26 Jun 2010 14:34:38 +0000 admin http://www.hfanlx.cn/?p=130 In 2010, offshore wind power as a prelude to the start of the concession tender officially opened. Although offshore wind power has a good wind resources, coastal network architecture is superior, the advantages of close to load centers, but its risks can not be ignored. Compared to wind farm developers, equipment manufacturers and other interested parties, the more directly bear these risks. China Guangdong Nuclear Wind Power Assistant General Manager Lu Hao said: “The offshore wind power development with high-risk, and advanced character.”

The high cost of long processing time and

China’s offshore wind generators resources such as wind power surveys for approval by the Shuiguizongyuan, understand Shuiguizongyuan very strict examination and approval. Marine environmental assessment and preparation of the report and assessment route longer time. General approval from the wind to the sea project a reasonable time was 2.5 years, longer than the land-based projects. In addition, the sea-front costs of developing wind power is wind power generator on land about 10 times.

Fan high price, design experience less

Although the major wind turbine manufacturers competing to develop offshore wind turbines, but the real volume manufacturers can rarely, less than the demand for short-term memory in the case, there is little room developers keep the prices down. Technically the fan, fan manufacturers to take part of the system Guonei pickled I design principles, in order to improve the offshore wind turbine reliability and availability, but may increase the device cost. Add twice the equipment cost is still in a high level.

In the design of wind farms, offshore wind power generator currently have some experience of the Design Institute designed little competition, inadequate design of high cost. Design costs as the proportion of small, risk is relatively small, design experience are a major risk.

Multiple risks faced by construction

Wind from the currently available data, China’s annual 50-meter-high coastal wind speeds ≥ 8m / s wind speed time to account for 40%, ≥ 10m / s wind speed accounted for 20% of the time, showing that construction of wind on the sea have a certain impact.

It is understood that whole sea area north of the Yangtze Estuary can work for about 1/3-1/2. Generated in the Western Pacific, 29 tropical cyclones each year, of which can affect tropical cyclones north of the Yangtze Estuary annual average of 3.1, up to up to 7 years (1990), at least 1 year only. 1949-2007 years, a positive landing north of the Yangtze Estuary were 5 times (2%). Waters north of the Yangtze Estuary can be seen every year by the impact caused by the typhoon, but are less opportunities for attacks.

As the domestic manufacturers and construction unit fans lack experience in building offshore wind, the early construction, construction progress will be slower, but with the progress of the project, with the maturity of various types of work, progress will accelerate gradually. But in general there is the potential risk of contractor delays.

It is understood that China is still not suitable for lifting of the special vessels at sea fans. Construction of multi-base can be installed more domestic vessels, but can be more than 5 meters in diameter pile foundation construction of the vessel less. East China Sea Bridge, a similar scheme can, with the overall lifting capacity floating crane lifting all boats, 20 domestic, but most of lifting height is not enough. Shows that if large-scale offshore wind power development, the lack of construction of the ship’s problem is quite serious.

Wind farm operation and maintenance risks

Ease of maintenance point of arrival mainly by the weather, sea state, distance and transportation decisions. Distance offshore wind farm, the general 10-50 kilometers offshore. In addition to fans of quality, high reliability requirements other than necessary maintenance is essential. Currently abroad, offshore wind generator farm maintenance overhaul the means of transport are boats and helicopters. The two modes of transport by the weather, great influence on sea conditions.

Availability from the fans point of view, the fans in terms of land, offshore wind turbines require higher reliability, learned from the current situation, offshore wind turbine availability is generally low.

Submarine cable is the problem can not be ignored, it is known, the domestic 35KV and 110KV submarine cable technology is more mature and complex. But can not produce 220KV submarine cable. The cost is land Submarine cables 5-10 times the risk of injury exist anchors. Relatively strong coastal grid structure, but involves offshore wind farm in the local network is also weak, according to a potential reason as rife electric grid can not run the risk of full power.

Offshore small  wind turbine tower tube for years by the invasion of sea salt, the corrosion rate faster than the terrestrial environment, in addition to the tower tube manufacture in strict accordance with the requirements of anti-corrosion coating, regularly checked to maintain the tower tube. As the fan base is located in the seabed, seabed local shape changes in the wave, tidal and ocean current role of seafloor topography in sports, on the basis of the stability of a great impact, sometimes endangering the safety fan. While taking fully into account in the design of ocean currents, waves, tidal effects on the basis, but fans running, the fan base should be regularly diving observations and maintenance.

Internet Risk

State has not developed a unified electricity price of wind turbine generator at sea, while the electricity price is indeed a major source of income developers get clear and reasonable electricity price allows developers to formulate investment and financing plans.

In addition, the coastal areas although high levels of network structure, but involves the Internet for offshore wind power shortage still exists, grid companies involved in offshore wind power development in the responsibility should be strengthened.

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