KR101334584B1 - The transfer method of the offshore wind turbine by the ＂marine transportation system＂ - Google Patents
The transfer method of the offshore wind turbine by the ＂marine transportation system＂ Download PDFInfo
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- KR101334584B1 KR101334584B1 KR1020120045275A KR20120045275A KR101334584B1 KR 101334584 B1 KR101334584 B1 KR 101334584B1 KR 1020120045275 A KR1020120045275 A KR 1020120045275A KR 20120045275 A KR20120045275 A KR 20120045275A KR 101334584 B1 KR101334584 B1 KR 101334584B1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention is an offshore wind power generator for generating electricity by installing a wind power generator on the sea in order to recycle the wind passing through the sea, a method of effectively transferring the offshore wind power generator to the desired sea point using a barge It is about. The present invention is a transfer method of the offshore wind turbine generator of a new concept that can be easily and conveniently transferred to a desired point, unlike the existing offshore wind turbine transfer method.
According to the present invention, the "offshore wind power generator transport method using the offshore transport system" is a barge, offshore wind power generator, reinforced concrete structure for buoyancy, ballast tank, tugboat, eg Quoted chain ". Existing offshore wind power generators have a complicated process and enormous cost to transport them to the sea, while the "offshore wind power generator transfer method using an offshore transportation system" according to the present invention is a barge and buoyant reinforced concrete structure, tugboat ( Since it is effectively transported by using a tugboat, etc., the main characteristic is that it can transport the offshore wind turbine to the desired offshore point quickly and at low cost.
The "offshore wind power generator transfer method using the marine transportation system" according to the present invention has the advantage that the transfer method is simple, the transfer cost is low, and the transfer method is convenient. In addition, the transfer time can be shortened as much as possible.
Description
The present invention relates to a 'offshore wind power generator transfer method using an offshore transportation system' for producing electricity by installing a wind power device on the sea, and more particularly, the wind power generator is transferred to the sea and installed through the sea and passes through it. It is related to renewable energy technology that produces air by converting air (wind) into energy sources. In order to effectively install the offshore wind power generators at sea, they need to be transported to the desired point.
Wind power is a power generation technology that generates electricity by converting wind energy. The wind system consists of "mechanical parts, electric parts, control parts".
The mechanical unit is composed of a rotor (rotor) including a shaft, a gearbox, a gearbox for converting the rotor to a proper speed, a brake for improving the efficiency of starting, braking and operation, Pitching System, and Yawing System.
The electric device part is constituted by a power stabilizing device which supplies a generator and other stable electric power.
Control system is composed of control system and yawing controller which is set up and operated to enable unmanned operation of wind turbine generator, active control of output by controlling the pitch of the blade, And a monitoring system that enables control and determination of the state of the system on the ground.
Wind turbine systems are composed of various types.
[Table 1] shows the types of wind turbine systems.
[Table 1] Types of wind turbine systems
When the wind turbine system is divided along the direction of the rotating shaft, it is divided into a vertical axis generator and a horizontal axis generator. Vertical-axis generators have no relation to the direction of the wind, so they can be installed in desert or plains, but they are expensive and inefficient compared to horizontal axis windmills. The horizontal axis generators are simple to install because they are simple to install but they are influenced by the wind direction. Generally, a horizontal axis generator is used for medium to large scale class and a vertical axis generator is used for small class of 100kW or less.
The wind turbine system is classified into a geared type and a gearless type according to the operation mode. Most wind turbines are geared wind turbines using constant-speed induction generators and are equipped with gears that increase the rotational speed of the rotor to match the high rated revolutions of the induction generator.
The Gearless type corresponds to a wind power generation system using a variable-speed operation synchronous (or permanent magnet) generator, and is a direct-drive type in which a rotor and a generator are directly connected to each other without a speed-increasing gear unit using a multi-pole synchronous generator. Although the power generation efficiency is high, it is more expensive than the induction generator and has a large size.
Because wind turbines have higher wind speeds and larger wind turbines can produce more wind energy, the amount of power generated by wind turbines depends on the strength of the wind and the size of the windmill. Also, as the height increases, the wind blows harder, so the generator in the higher place is larger than the generator in the lower place and the generation amount is also higher. For wind power generation, winds blowing at an average speed of more than 4 m / s are required. The velocity of the wind referred to here is not the ground on which we stand, but the speed at which the wind generator is at its wing.
The effects of wind power generation are as follows.
First, the effect of replacing fossil fuels with power generation method using wind kinetic energy is very high.
Secondly, it is possible to supply economical power to the underdeveloped areas such as the islands.
Third, land use can be streamlined by installing in coastal and mountainous areas with excellent wind direction.
Fourth, in some specific areas such as Jeju region, large scale wind farm complexes can be used as tourism resources.
Because wind power generation uses pollution-free and infinite winds scattered everywhere, it has little impact on the environment and can utilize the land efficiently. In the case of large-scale power generation complexes, Is a new energy generation technology. In addition, the area actually used in the wind farm is only 1% of the total area of the whole area including the foundation of the wind turbine, the road, the measurement and the central control room, and the remaining 99% Can be used. In general, the area required for power generation is wind power 1,335 m2 / GWh, coal 3,642 m2 / GWh, solar heat 3,561 m2 / GWh, and solar power generation 3,237 m2 / GWh. Wind power generation is very effective in reducing pollutants, so if a 200 kW wind turbine generates a power of 400,000 kWh for one year, it will replace about 120-200 tons of coal. -3.2 tons of NOx, 1.2-2.4 tons of CO2, 300-500 tons of CO2, 16-28 tons of slag and ash, and the emission of suspended solids is about 160-280 kg per year. . The price of wind power generation system varies depending on the wind resource of the installation area. However, the large-scale wind farms in the US currently have a system installation cost of about $ 750 / kW and a power generation cost of about 5 ¢ / kWh. It is competitive. Moreover, if continuous investment and technology development are combined, wind power generation is expected to achieve 3.9 ¢ / kWh unit price target within 15 years. Since the technology related to wind power generation is already in practical use stage, it tends to concentrate on lowering the price of wind power generators and increasing the size and spread of the wind power generators rather than developing element technology. In many countries, wind power generators are being supplied in a competitive manner. By the end of 1994, the world has installed about 3,7600 MW of wind power generators, producing more than 4.5 billion kWh of electricity annually. In 1994, a new wind turbine with a capacity of 611 MW was newly installed, and in India, a wind farm with a size of 235.5 MW was planned to be built in 1995. Currently, the largest number of wind turbines operate in the United States, Germany, and Denmark. In the United States, a large-scale wind farm in California produces about 3 billion kWh of electricity annually in 1993, In 1994, it produced about 3.5 billion kWh of electricity. However, the country with the largest share of wind power is Denmark, which currently produces 1,135 MW of 4900 wind turbines, accounting for 7% of electricity consumption and supplying to 440,000 households. According to Inara 's "Energy 21" plan, it will raise 10% by 2000 and 50% by 2030. The present state of the domestic technology development was analyzed by the Korea Research Institute of the National Institute of Advanced Industrial Science and Technology (AIST) to analyze the characteristics of wind resources using the statistical data of 64 meteorological stations and measurement data of some parts of the inland area. Due to the nature of the wind resource, which is heavily influenced, the basic statistical data have not been improved yet. Therefore, it is necessary to continue the evaluation of wind power resources in the prospective wind power generation area and the feasibility evaluation project for wind farm construction.
Let's take a closer look at offshore wind power generation.
Offshore wind power generation refers to a power generation system in which a wind turbine is installed in a lake, a fjord terrain, or a coastal waterside, and the kinetic energy of the wind blowing there is converted into mechanical energy by rotating wings to obtain electricity. The necessity of offshore wind power generation has been limited due to the enlargement of the wind turbine due to the development of onshore wind power generation, and problems such as the noise problem due to the enlargement of the turbine, installation and transportation problems, Therefore, offshore wind power generation has been devised as a solution to solve the problems of onshore wind power generation.
The advantages of offshore wind power generation are as follows.
end. Massive installation site
It is not easy to find an area where a wind turbine can be installed in a country with limited territory. In other words, in the case of onshore wind power generation, there is a limitation of installation site. On the other hand, it is possible to construct a large-scale wind power generation complex with a good land acquisition.
I. Periodic and strong winds
The offshore is able to maintain about 1.5 ~ 2 times higher power generation [2] with relatively low fatigue loads compared to onshore wind power generation under similar conditions because of less turbulence of wind and less wind speed depending on height and direction.
All. Eliminate noise and visual pressure
In case of offshore wind power generation, since it is installed at a distance of about 15 km from the coast, problems such as noise caused by the enlargement of the wind turbine and visual over-pressure can be solved
la. Creation of added value as tourist area
The wind turbines installed on the sea produce excellent scenery. For example, in Denver, Denmark, Lunden is known for being a successful example of building a world-class offshore wind farm.
Major technologies of offshore wind power generation are as follows.
end. Offshore wind turbine
Offshore wind turbines basically apply the same technology as onshore wind turbines. It has a life span of about 20 years, and it uses wind turbines of 3 ~ 5MW or more, which are larger than those on the land. Each element is designed and coated to prevent corrosion damage due to salt.
I. Foundation foundation
Basic construction can be divided into four representative types.
(end). Concrete caisson type
It was applied to Vindeby, Middelgrunden and Nysted offshore wind farms. It can be used at relatively shallow water depths of 6 ~ 10m and maintain its position by its frictional force with its own weight and sea floor. The foundation diameter is 12 ~ 15m and there is a possibility of causing stability problem of eccentric slope in bad ground.
(I). Monopile type
It is the most basic type of offshore wind power plant currently used and can be installed at a depth of 25 ~ 30m. Horns Rev, North Hoyle, and Scroby Sands offshore wind farms. It is economical when used for large-scale complexes by fixing large diameter piles on the sea floor by driving or drilling. The base diameter is 3 ~ 3.5m and there is fatigue load or corrosion problem on the member.
(All). Jacket type
Currently, there is a lot of interest in the countries with offshore wind farms. This type, applied in the UK's "The Talisman Beatrice Wind Farm Demonstrator" project, is supported by a jacketed structure and secured to the seabed by piles or piles. It is a large-scale ocean structure, has high track record and high reliability, and is economically advantageous when used in a large-scale complex construction like the monophasic type. [5]
(la). Floating type
Future deep sea winds The floating type, which is a mandatory task of wind power generation, is being studied by many wind power companies so that it can be installed at a depth of 40 ~ 900m.
All. How to connect to the grid
(end). Individual connection
It does not affect other projects and features the shortest cable length. Although the location of the problem can be clearly identified when a problem occurs, it has a disadvantage that it requires a large area for cable connection, lacks operational flexibility, and has a large environmental impact.
(I). Mesh Grid
It is possible to minimize the efficiency deterioration in the partial load due to the use of the intermediate transmission, but the design considering the technical and commercial aspects is required and the investment cost is great. At full load there is no advantage over other methods. [5]
(All). Radial Configuration
It is easy to receive licenses because there is not enough space for cable connection and the environmental impact is small. However, there is a disadvantage that the length of the cable becomes longer and the operational flexibility is insufficient.
As can be seen from the above, the most important aspect of offshore wind power generation is in the process of installing offshore wind power generators at sea. There is a problem in that it is difficult and costly to install the wind power generation equipment at sea. In addition, since the function is simplified by utilizing only the wind power generator, the function of the offshore wind power generator is not various compared to the high installation cost, and the problem is simple.
The present invention is an offshore wind power generator for generating electricity by installing a wind power generator on the sea in order to recycle the wind passing through the sea, a method of effectively transferring the offshore wind power generator to the desired sea point using a barge It is about. The present invention is a transfer method of the offshore wind turbine generator of a new concept that can be easily and conveniently transferred to a desired point, unlike the existing offshore wind turbine transfer method.
Offshore wind power generator transfer method using the marine transport system according to the present invention, is installed on the sea offshore wind power generator (S12) for producing electricity; A barge dedicated to transporting the offshore wind power generator to a desired offshore point (S11); The main housing is attached to the lower end of the bottom bar of the dedicated barge (S11), having a ballast tank (S14) inside the main housing, the reinforced concrete structure for buoyancy made of reinforced concrete to support the bottom of the offshore wind power generator ( S13); A tugboat (S16) towing the dedicated barge (S11) to a desired sea point; As a method of transporting an offshore wind power generator using an offshore transport system including a towing chain (S17) connecting the dedicated barge (S11) and the tug boat (S16) to each other, the offshore wind power is installed in the sea to produce electricity. Manufacturing a generator (S12); Mounting the offshore wind generator on a dedicated barge (S11) to transport it to a desired offshore point; Injecting a predetermined amount of seawater into a ballast tank (S14) located inside the buoyant reinforced concrete structure (S13) attached to the bottom of the bottom of the barge (S11); Using the towing chain (S17) to connect the dedicated barge (S11) and the tugboat (S16) to each other, the sea to use the maritime transport system comprising the step of towing the dedicated barge (S11) to the desired sea The main feature is the wind turbine transport method.
According to the present invention, "offshore wind power generator transfer method using an offshore transportation system" can be expected the following effects.
First, offshore wind generators can be transported to the sea at low cost.
Second, the transfer method is simple and has the advantage of easy transfer and installation.
Third, the transfer time can be shortened. In other words, it has the advantage of minimizing the transfer time of offshore wind power generators.
1 is a schematic conceptual diagram showing a method of transporting an offshore wind power generator according to "offshore wind power generator transport method using an offshore transport system" according to the present invention.
According to the present invention, the "offshore wind power generator transport method using the offshore transport system" is a barge (S11), offshore wind power generator (S12) for the transport and installation of offshore wind power generators, reinforced concrete structures for buoyancy (S13), ballast Tank S14, tugboat S16, towing chain S17 "and the like.
"Dedicated barge for transport and installation of offshore wind power generators (S11)" means a dedicated barge manufactured to transport and install offshore wind power generators to the desired offshore point.
"Offshore wind power generator (S12)" means the offshore wind power generators (기) manufactured to produce electricity by installing on the sea.
The "buoyant reinforced concrete structure (S13)" means the main housing (Housing) of the structure made of reinforced concrete with a buoyancy function for supporting the offshore wind power generator.
"Ballast Tank (Ballast Tank) (S14)" refers to the internal empty space of the "buoyant reinforced concrete structure (S13)", more specifically "S14" shown in Figure 1 "ballast tank (S14) Figure 1 shows the case where ballast is filled with seawater.
Ballast is a heavy load placed on the lower part of a ship to maintain proper stability in the ship and to control draft and trim. Safe sailing requires adequate resilience and proper draft. It is designed to satisfy these conditions in full load condition, but in the collinear condition, the draft is shallow, the trim is inadequate and the restoring force is insufficient, so that it can be sailed. Put seawater or fresh water into the ballast tank and adjust. This seawater and fresh water are called water ballasts.
An appropriate amount of seawater should be introduced into the water ballast in order to safely transfer the "barge (S11) for transport and installation of offshore wind turbines" to a desired offshore point. By doing so, the "barge (S11) for the transfer and installation of offshore wind power generators" to enable safer operation at sea level (S15).
"Tugboat (S16)" means a tugboat for transporting a "barge (S11) for transport and installation of offshore wind power generators" equipped with "offshore wind power generators (S12)" to a desired offshore point. do.
"Tugboat (S17)" connects the "Tugboat (S16)" by connecting the "Tugboat (S16)" and "Tugboat (S16)" to each other for the transport and installation of offshore wind turbines. By means of towing, means a towing connection line (連 結 線) used to transfer the "barge (S11) for transport and installation of offshore wind power generator (S11)" equipped with "offshore wind power generator (S12)" to the desired sea. .
As described above, the "offshore wind power generator transfer method using the offshore transport system" according to the present invention is a "barge (S11), offshore wind power generator (S12), buoyancy reinforced concrete structure ( S13), ballast tank (S14), tugboat (Tugboat) (S16), towing chain (S17), etc., "dedicated barge for transport and installation of offshore wind power generators (S11)" and "tug" The "Tugboat" (S16) is operated by connecting the "Tugboat" (S16) to each other using the "towing chain (S17)" to install the "offshore wind power generator (S12)". It means to transport to a specific place.
S11: dedicated barge for transport and installation of offshore wind power generators
S12: Offshore wind power generator S13: Reinforced concrete structure for buoyancy
S14: Ballast Tank S15: Sea Level
S16: tugboat S17: towing chain
Claims (1)
A barge dedicated to transporting the offshore wind power generator to a desired offshore point (S11);
The main housing is attached to the lower end of the bottom bar of the dedicated barge (S11), having a ballast tank (S14) inside the main housing, the reinforced concrete structure for buoyancy made of reinforced concrete to support the bottom of the offshore wind power generator ( S13);
A tugboat (S16) towing the dedicated barge (S11) to a desired sea point;
A towing chain (S17) for connecting the dedicated barge (S11) and the tugboat (S16) to each other;
As a method of transporting offshore wind power generators using an offshore transport system comprising:
Manufacturing an offshore wind power generator (S12) to install on the sea to produce electricity;
Mounting the offshore wind generator on a dedicated barge (S11) to transport it to a desired offshore point;
Injecting a predetermined amount of seawater into a ballast tank (S14) located inside the buoyant reinforced concrete structure (S13) attached to the bottom of the bottom of the barge (S11);
Connecting the dedicated barge (S11) and the tugboat (S16) to each other using the towing chain (S17), and towing the dedicated barge (S11) to a desired sea;
Offshore wind power generator transfer method using a marine transport system comprising a.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101667042B1 (en) | 2016-07-04 | 2016-10-28 | (주)명일정공 | Integrated Device offshore wind turbine installation |
| KR101694124B1 (en) | 2016-09-05 | 2017-01-09 | (주)명일정공 | One integrated offshore wind turbine installation apparatus and method of installation comprises a suction base |
| KR20190136409A (en) | 2018-05-30 | 2019-12-10 | 삼성중공업 주식회사 | Barge for transferring marine structure and balancing method thereof |
| KR102657443B1 (en) | 2024-01-02 | 2024-04-15 | 주식회사 스펙엔지니어링와이엔피 | Of prefabricated lower-platform of the floating body for installation offshore wind turbine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095630B (en) * | 2019-05-15 | 2020-03-27 | 临海迪萨智能技术有限公司 | Wind power detection equipment based on sea surface survey |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100086800A (en) * | 2009-01-23 | 2010-08-02 | 소레탄체 프레씨네트 | Method for the transport of a civil engineering structure in an aquatic medium |
| KR101041282B1 (en) * | 2008-09-30 | 2011-06-14 | 한국해양연구원 | Construction Method of Marine Structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101041282B1 (en) * | 2008-09-30 | 2011-06-14 | 한국해양연구원 | Construction Method of Marine Structure |
| KR20100086800A (en) * | 2009-01-23 | 2010-08-02 | 소레탄체 프레씨네트 | Method for the transport of a civil engineering structure in an aquatic medium |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101667042B1 (en) | 2016-07-04 | 2016-10-28 | (주)명일정공 | Integrated Device offshore wind turbine installation |
| KR101694124B1 (en) | 2016-09-05 | 2017-01-09 | (주)명일정공 | One integrated offshore wind turbine installation apparatus and method of installation comprises a suction base |
| KR20190136409A (en) | 2018-05-30 | 2019-12-10 | 삼성중공업 주식회사 | Barge for transferring marine structure and balancing method thereof |
| KR102657443B1 (en) | 2024-01-02 | 2024-04-15 | 주식회사 스펙엔지니어링와이엔피 | Of prefabricated lower-platform of the floating body for installation offshore wind turbine |
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| KR20130122165A (en) | 2013-11-07 |
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