Offshore wind power status and development trend

Posted by admin on 五月 15th, 2011

In recent years, offshore windmill power project gradually developed from a single unit for medium and large wind farm construction. The design of offshore wind farms offshore wind farm on the technical and economic important, including the arrangement of unit wind farm control.

Offshore wind turbines should be considered the arrangement of the structure of the seabed as well as environmental, geographical and technical conditions and other restrictions, as far as possible to avoid interference between the wind turbine, wind turbine to reduce the losses caused by the wake, optimal use of sea ​​area, so that the installed capacity per unit area, or to maximize power generation. To reduce costs, wind turbine should be arranged as far as possible in the shallow, flat waters and seabed.

Large-scale offshore wind generator farms are two methods commonly used method, multiple turbines in parallel connected to a converter and then the grid, or by direct fan control with a distributed grid. Which each have their own fan inverter, a substantial increase in reliability, will not result in a single inverter fault can not be transported all the fan power to the grid, while transmission capacity increase, respectively, control the single wind machine can work in the ideal state. With offshore home  wind generator capacity increasing offshore wind power will face new technical issues, namely the delivery of offshore wind power, and second, the dynamic stability of wind farm impact on the grid. Improve the controllability of wind power is the future direction of development, in addition to wind turbine manufacturers control technology, research should focus on short-term weather forecast of wind power and wind farms in the centralized control strategy. Technical aspects of the power grid, through technical and management measures, as much as possible to keep the wind turbine generator synchronized with the other

30 billion yuan wind power projects have lianshan

Posted by admin on 五月 10th, 2011

The total investment of about 30 billion yuan of new energy wind power projects recently autograph in yao’s county, the lianshan zhuang after the completion of the project total ZhuangJiLiang can reach 30 million kilowatts, make the local power generation capacity growth for local three times, and can bring huge economic benefits and social benefits.

Lianshan XiNaLu XianJing located in nanling residentail wind generator mountains, 49 and around 1,000 meters altitude above the highest mountain peaks, fog 1659.3 meters altitude wind resources abundant, domestic. Huarun new energy project is lianshan at present introduces wind the only a use wind power projects but also the county currently the largest enterprise-establishing project investment. The program plans to use three to four years, the total ZhuangJiLiang can finish development up to 30 million kilowatts, make them from the current generating capacity in the county 1.35 million kilowatts growth to 43.5 kw, growth almost tripled.

At present, the new energy companies are to autograph for detailed wind turbine generator resources lianshan in re-ligion investigation, and windmill generator towers to install regional test measure wind, will start in the second half of the first phase of the project and then rolling development, until it reaches ZhuangJiLiang 30 million kilowatts of total size. To cope with the project development, lianshan design a total capacity of 54 million kilowatts installed 220 kv transmission of the city has been put into use, first phase project of new energy wind power projects to ensure huarun with plenty of transmission capacity.

Our own technology to realize the wind power generation ‎

Posted by admin on 五月 6th, 2011

The world by maglev magnetic move 493,000 dollars of wind power technology step county of shandong province recently in experiment stations started to be constructed. This new technology to realize the wind, the wind power design work for grade 1-12 wind, wind energy conversion efficiency grade wind greatly increased.

According to step county commission chief introduction, the existing wind generators are three-wing horizontal axis type of wind speed, the demand is higher, when the wind is less than 6 meters per second per second or greater than the difficulty in power 24 metres. By dalian magnetic valley institute of technology Co., LTD. Development of maglev magnetic dynamic wind power technology, theoretically, the wind power generation, realized the full breeze can power generation.

Supposedly, it a maglev technology distinguishes magnetic move to Germany, Japan, as a representative of the ChangDao, superconducting levitation technique, have fully independent intellectual property rights. Using this technique of fans for grade 1 – working speed wind, windmill generator turn 12 level turbulence, and a strong ability to resistance to ° direction changes, wind 360 is expected to improve the efficiency of conversion from wind to several times. Moreover, use this technology is equipped with the home wind generator energy-storage heap, energy storage pile of first will get a wind turbine on energy stored up, after the needs of users output corresponding current.

Responsible for the technical development experts think the maglev magnetic dynamic wind power technology can effectively solve the current WTG intermittent, lack of low voltage across functions defects. Maglev magnetic dynamic wind power 15MW project investment research experiment stations issue 2.2 billion yuan, the first units this year is expected to put into production in December. Second, will invest 1.5 billion yuan in the Yellow River along the 47 km step section, and Yellow River levee construction of yellow 15MW maglev for wind turbines manufacturers magnetic move 10 sets wind turbine generators.

Wind power plant or wind farm

Posted by admin on 五月 3rd, 2011

Wind power from the wind, just a word of change, but the wind industry has marked the beginning stage, primary bid farewell to the working principle of original, at present people have developed mature, the major of devoted to improving working efficiency and stable fan performance, and this is strict industrial category.
A word problem – that is, now we invest in the construction of the wind power base should be called the wind power plant or wind farm.

This seemingly unimportant word disputes, actually relates to a kind of ideas and industry pattern.

This concept actually from abroad, initially, foreign will wind power kit base called WindFarm, specific definition is also very simple, is “a group of fans”. Fram contain “farm” due to the idea, so be translated for wind farm.

Dr SunFuJie bring slides, will wind power base for the English name change WindPlant, placing one of the main meaning is “factories, workshop”. “WindPlant” and “WindPowerPlant” has been widely applied to foreign wind field. He believes that by now IBM and within the industry in the nature of work to see the Horizontal wind turbines word, the wind power plant more can reflect the essence of modern wind development.

Wind power is a word reminiscent of exotic Danish windmills. In fact, windmills, was born in 12th century in Europe. There is a view of this technique is by attended the Crusades soldier from the palestinians and Syria back, the windmill long-term is applied in the grinding cereals, really fit the meaning of “the farm”.

The early wind power because technology not mature, single typhoon car limited, and is hard to scale capacity utilization, always give a person a kind of solo combat feeling, it seems that no industrial civilization enterprise, really like ancient manual mill inheritance. Be understood for marine wind generators farm really appropriate.

WangShengWei wind power in China, said hair modern fans have realized the networking, and between machine in gradually realize automation and intelligent and other high-tech industrial characteristic. Wind power technology is a completely independent, developed to a certain stage industrial technology, should no longer be simple defined as “a group of fans”.

Wind power from the wind, just a word of change, but the wind industry has marked the beginning stage, primary bid farewell to the working principle of original, at present people have developed mature, the major of devoted to improving working efficiency and stable fan performance, and this is strict industrial category.

Another sign is mainly rely on factors. The early windmill generator technology is rely on to have the wind, fan can move, people can’t anticipate how much wind can be extracted from it, and how many wind can be transformed into concrete application at any time, even the stalled likely. But now, the fan development have transformed by technology for development. FengJi is not very high breeze can also use; High, medium, low-level wind can points situation of use; Wind energy utilization more hasten is stable… These features without exception, show that the wind is no longer an cannot control the weather, and become a can be make full use of energy.

The first really comes from windmills agricultural production small wind turbines technology with windmills. This is a word, also seems to be the change in remind people, to use the means of industrialization and information to transforming traditional agriculture, or from traditional agricultural draw available idea or basic skills, convert it to the more beneficial to human survival and development of the new technology has technology content.

Wind power bearing enormous market potential

Posted by admin on 四月 29th, 2011

With the equipment, technology level of ascent, such as domestic enterprises and tianma wazhou import substitution has begun by yaw and change to the slurry bearing field spindle bearing and gear box bearing expansion. Wind power bearing market space, only the above bearing enormous market capacity of 2009 reaches 50 billion yuan of above, wind power bearing oligopoly competition pattern has been formed and is expected to fall modestly profitable space is relatively posture, barriers to entry, we also expect high spindle bearing &gearboxes lubricated by bearing, according to the calculation, wazhou B future three years are: $0.40 EPS was $0.50 0.65 yuan, and, among which the 2009 PE is only 10 times, giving wazhou B “immediately” investment rating, maintain home wind generator tianma shares “increasing” investment rating.

Domestic enterprises import substitution by yaw and change to high-end plasma bearing spindle bearing and gear box bearing expansion.

In wind power yaw and variable plasma bearing field, is expected to domestic enterprises wazhou group and tianma shares were up to 10 billion revenue 09, and amounted to RMB dominant market share rate up to 80%, basically complete import substitution.

For spindle bearing spindle bearing and gear box, precision level up to equipment, material P4, selection and design level higher, on behalf of wind power bearing the highest level. But in this field, domestic wind turbines enterprises will come true import substitution, wazhou shares to realize the 2009 400 million RMB income, tianma shares also is expected to have gained ground in about three years between finish is expected to import substitution.

Wind power bearing market space is huge, and tianma infuriated only wazhou 2009 market capacity is bearing 50 million yuan of above.

According to the calculation, yaw and variable plasma of wind generator bearing the 2009 market capacity up to 20 billion yuan of above, spindle bearing &gearboxes lubricated by bearing 30 billion yuan total also above, import substitution space is enormous.

Damning Byrd offshore wind farm

Posted by admin on 四月 25th, 2011

Damning Byrd offshore wind farm was built in Suffolk coast from England about 25 kilometers sandbars. 500 megawatts of capacity to make it become the world’s largest offshore wind farm. Once it starts to run Siemens energy can supply 140 3.6 megawatts of wind power generators, and make wind farm and the national grid connected. Damning Byrd in green energy supply will play a more important role in 2020, help realize renewable energy accounts for 20% of the total energy eu objectives.
In order to help the safe operation of wind farm, Siemens building safety department provides business department important telecom, closed-circuit television monitoring system solutions. Includes video network and completely based on IP monitoring network monitoring alarm system, can pass speech synthesis alarm monitor 25 kilometers waters. In order to make Britain and Europe are able to share video data, Siemens will video alarm and monitoring integrated into the Siemens SCADA platform and client IP network.
Offshore wind farm testing aims to assess the remote sites, ensure the safety of operators and monitoring waters. Video information can also be used for logistical planning and evaluation of the potential accident.
Network and equipment choice must be perfected, and the elastic to cope with the challenge of severe Marine environment. This project needs a delivery ways to adapt to the requirements, both onshore and offshore to meet the delivery and maintain two different environment crucial life and health security challenges.
In particular, security solutions team is the most important factor is one of the design of the position of remote turbines. 140 turbines were installed in the depth of Horizontal wind turbines 24 meters to 34 meters and steel monopoly and transition block. This solution is the most important respect this system possesses mature component high availability. As more and more increased, Siemens has backup completed remote diagnostic IP platform to promote remote maintenance.
Siemens company design system to meet user needs, experience of using state grid and offshore from project. Siemens understand factory acceptance test (FAT) and site acceptance test (SAT) is of great importance. Siemens is supervision project installation and supervise commissioning work. This homemade wind generator system is designed, to achieve “return to exclude disaster land” service. This involves a plugin function and broadcast design, in an error can easily remove and exchange fault components. This means that expert doesn’t need to be transported to the turbine, so can reduce maintenance costs and downtime, all the subtle records were also kept in the box so much easier to maintain and keep storage flexibility.

The United States first offshore wind farm open built

Posted by admin on 四月 22nd, 2011

The United States government 19 approval in Massachusetts resort building near cape wind power.at the domestic first offshore.
On the interior statement cape wind power projects “announced” lines. According to the plan, the German Siemens Co., LTD will be in before fall in Kentucky near cape conaniah, build 130 sets across the open wind turbine generators, the total installed capacity of 3.6 megawatts (mw).
The wind project proposal in 2001, after the interior wind generators ministry affiliate management, supervision, and Marine energy strict environment and management assessment Nevada, eventually approved.
Interior secretary Ken sasha la salle said, related workers have taken “special measures” to comprehensive assessment of cape wind project site, Kentucky ecological environment and cultural resources across the potential impact.
When completed, the wind farm is expected to put into operation meet cape and around the horse and vineyards island and nan’s island three-quarters Kentucky power demand, every year for Massachusetts 73.3 tons carbon-dioxide emissions.

Wind power generation capacity exceeded 5 million kwh

Posted by admin on 四月 13th, 2011

East White Mountain wind farm is the first in Zhejiang wind generator farm is the only one in Zhejiang wind farm. As at 0:00 on March 23, the field of wind power capacity totaled 5,139,540 degrees, breaking the 5 million kwh mark.

East White Mountain wind farm in the town of Dongyang City, Deer Tiger Dongbaishan Peak. Dongyang East White Mountain is the main peak, elevation of 1194.7 meters, 50 meters along the ridge height of the annual average wind speed is 7.44 m / sec, the wind power density of 429 W / m, with good wind resources.

The wind farm in May 2009 to start construction in two phases, a total investment of about 1.4 billion, in the East White Mountain ridges along the plasma away from the wind turbines installed 20 fixed units, each unit capacity of 750 kW, with a total installed capacity 15 MW, the annual average of 26.88 million kwh electricity. In addition, simultaneously supporting the construction of a booster station of 35 KV, 35 KV line sent one back. East White Mountain Wind Farm is a landlocked alpine-type wind farm, according to the nature of public power plant construction, the full generation capacity acquired by the Jinhua Electric Power Bureau.

Last year early in November, the official East White Mountain wind farm grid. “According to wind power generation capacity and each household uses 5 kilowatt hours per day, the day East White Mountain Wind Farm generating capacity to meet the 15,000 residents of the demand for electricity a day, to a certain extent, ease the summer of Dongyang City power shortage. “Dongyang City Power Supply Bureau, the person in charge. It is understood that, since the grid since the farms have been running smoothly, the first month of generating capacity reached 100 million kwh.

Approved for the Humber Gateway offshore wind farm

Posted by admin on 四月 9th, 2011

Analysis by The Carbon Trust also shows that offshore wind could deliver between 20 to 50% of our total electricity by the same date. From a CSR perspective, both of these pieces of news are highly significant.

Internally, the UK needs to meet a European Union renewable energy target of 15% by 2020. Offshore wind energy is a realistic option for meeting this target as the technology, based on adapted onshore wind technology, is ready.

The US and China have recently indicated ambitious targets for offshore wind capacity – helping boost the global market. Renewable energy looks as if it could become a CSR success story for the UK.

The UK is already the leading country in terms of installed capacity for offshore wind energy. As a result, the key wind turbine manufacturers are based in the UK as well as leading companies in design, research and development. This element of renewable energy is an area in which the UK is leading the field and showing real CSR leadership. The UK also has an historic advantage from its offshore experience in oil and gas exploration, particularly in the North Sea.

The Carbon Trust’s research indicates that the offshore wind  turbines manufacturers industry will grow by 10% a year of the next 40 years and be worth 170bn by 2050. UK businesses operating in this industry could capture 3% of the global market for components to around 15% for installation.

In the UK, offshore wind could contribute between 3bn and 10bn a year to GDP between 2010 and 2050. This would mean a cumulative figure of between 50-100bn. The home wind power generator industry development is estimated to create between 80,000 and 230,000 jobs. The majority of the contribution to GDP (around 80%) would come from European markets. A total of 80% of the jobs would be generated from exports from the UK.

Benj Sykes, director of Innovations at the Carbon Trust, said:?”Offshore wind is a strategically important economic asset for the UK that can deliver long term growth and energy security. The economic prize for the UK economy is vast and we have to grab it now. We are in an excellent position to be a global market leader.”

Given the fact that the UK is an island, it is perhaps not surprising that we should have quietly developed this specialism. A number of different offshore wind generators manufacturers farms are either in train or have recently been given approval. Thanet, the world’s largest offshore wind farm, opened last year. It has 100 turbines, and can generate electricity for 200,000 homes. Earlier this year plans were approved for the Humber Gateway offshore wind farm, which will be able to power 15,000 homes.

The wind generator bearing used in due to corrosion cause damage

Posted by admin on 四月 2nd, 2011

The wind generator bearing used in due to corrosion cause damage, which is one reason for the wind generator fault. Generator bearing electric corrosion is when the bearing was spinning have internal energized, the current through the rotation is very thin contacting part of oil film residential wind generator bearing produces sparks, make the phenomenon of local melting surface happen. In order to prevent corrosion occurrence, USES the insulation good ceramic material production ceramic bearing. In this bearing structure, because in bearing outer ring have a layer of spray plating ceramic film or resin, make its insulation film than traditional bearing has the following advantages:
The long-term stable insulation;
Bearing easy installation;
Due to the warming of lubricant is less, improve service life.
Special to note is the traditional bearing due to a electric corrosion, must early for replacement. And insulation ceramic bearing because its good insulation, can prevent corrosion occurrence. Large wind generators cabin is apart from the ground up, bearing produces attaint around 100m replaced, the operation is very difficult, costly maintenance cost. And wind-driven generator for maintenance extended shutdown, also reduced the power of time. Insulation ceramic bearing of not only prevent premature damage wind generator and reduce the maintenance cost and improves the reliability of the whole small wind turbines.
The new economic policy by the United States green worldwide represented, the use of natural energy will greatly speed. Wind-driven generator plays a big role. In the future the  wind turbine  generator in the process of the development of large-scale development lightweight, compact, the high reliability wind-driven generator bearing is very important. In addition, in order to reduce the maintenance cost and improve the bearing and lubricant of working condition of the monitoring technology and advance the accuracy and reliability of the maintenance technology also is very important.


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