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WO2018174348A1 - Floating type offshore wind power generation plant - Google Patents

Floating type offshore wind power generation plant Download PDF

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Publication number
WO2018174348A1
WO2018174348A1 PCT/KR2017/008395 KR2017008395W WO2018174348A1 WO 2018174348 A1 WO2018174348 A1 WO 2018174348A1 KR 2017008395 W KR2017008395 W KR 2017008395W WO 2018174348 A1 WO2018174348 A1 WO 2018174348A1
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WO
WIPO (PCT)
Prior art keywords
column
wind power
offshore wind
upper structure
column member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/008395
Other languages
French (fr)
Korean (ko)
Inventor
김용휘
권영규
이항희
류진혁
김민지
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mastek Heavy Industries Co ltd
Original Assignee
Mastek Heavy Industries Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mastek Heavy Industries Co ltd filed Critical Mastek Heavy Industries Co ltd
Priority to CN201780039301.7A priority Critical patent/CN109804158A/en
Publication of WO2018174348A1 publication Critical patent/WO2018174348A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/11—Combinations of wind motors with apparatus storing energy storing electrical energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to a floating offshore wind turbine, and more particularly, to produce a floating body having a structure that can overcome the wave drift force (current drift force) and current force (stable power) It relates to a floating offshore wind power plant to be made.
  • the structure for installing the wind power plant on the sea can be divided into fixed and floating, first, the fixed structure is a form that is directly fixed to the bottom of the sea, such as on land, to respond to environmental loads by structural deformation, and also The floating type is floating on the surface and is subjected to self weight, buoyancy, environmental load and mooring force, and overcomes environmental load by six degrees of freedom movement of the structure.
  • An object of the present invention is to minimize the wave surface force applied to the floating body by minimizing the water surface area of the floating body and at the same time, by designing the shape of the floating body in a streamlined or oval shape to minimize the current flowing to the floating body, It is to provide a floating offshore wind power plant to ensure a stable solid state of the fluid.
  • Floating offshore wind power generation equipment supports the upper structure and the upper structure is formed so that the wind power generation unit, connecting the substructure and the seabed to moor the substructure and the substructure formed by buoyancy body
  • the mooring line and along the outer edge of the upper structure and the lower structure are respectively installed and connected to each other, characterized in that it comprises a column structure formed to have an inclined connection form.
  • the column structure has a length along the outer edge of the upper structure and is installed along a plurality of first column members and the outer edge of the lower structure, extending to be inclined upward toward the upper structure the first column And a second column member connected to one end of the member.
  • the column structure is formed with an inclination so that the connection form of the first column member and the second column member to form an oval or streamlined,
  • the present invention minimizes the wave drift force applied to the floating body by minimizing the water surface area of the floating body and at the same time designing the shape of the floating body in a streamlined or oval shape to minimize the current flow force applied to the floating body, It has the effect of making stable bakbak.
  • the present invention by the installation form of the column constituting the side of the float in the form of inclined upward from the bottom to the top rather than vertical, it is possible to increase the restoring buoyancy of the float according to the inclination of the column, Therefore, it has an effect of increasing the action force of the relative buoyancy.
  • FIG. 1 is a view schematically showing a floating offshore wind power plant according to an embodiment of the present invention.
  • FIG. 1 is a view schematically showing a floating offshore wind power plant according to an embodiment of the present invention.
  • the floating offshore wind turbine includes an upper structure 100, a lower structure 200, a mooring line 300, and a column structure 500.
  • the upper structure 100 is formed to be mounted on the wind turbine.
  • the upper structure 100 is formed to have a predetermined size and is provided to be exposed to the sea, and the wind power generator mounted on the upper structure 100 is not shown in the drawing, but in general, the rotor and the rotor can rotate. It may be provided with a nacelle (nacelle) to support it, and may further include a power generation device, power storage device or power transmission device.
  • a nacelle nacelle
  • the lower structure 200 is a structure arranged to be spaced apart from the upper structure 100 in a vertical direction, and is formed as a buoyancy body that supports the weight of the upper structure 100 and the wind power generating unit with buoyancy.
  • the substructure 200 is preferably made in the form of a vertical cylinder, but this is only an example and is not limited to any one special form.
  • the lower structure 200 is configured to generate a buoyancy as a hollow hollow structure, the ballast (ballast) for placing the center of gravity under the buoyancy center for this purpose may be mounted on the bottom.
  • the mooring line 300 connects the substructure 200 and the sea bottom to moor the substructure 200.
  • the number of mooring lines 300 is one, so that the equipment is moored by a single mooring line 300, thereby reducing the number of mooring lines 300 itself, the mooring line 300 It is possible to minimize the installation work of the anchor 310.
  • the mooring line 300 may be made of a wire rope having rigidity, and the wire rope may be a structure in which strands made by twisting wires are twisted together in a single or a plurality of layers. It doesn't happen.
  • the top of the mooring line 300 is fixed to the bottom of the lower structure 200, the anchor 310 is installed on the bottom is fixed to the bottom.
  • the anchor 310 is for mooring the lower structure 200 connected to the mooring line 300 at a predetermined position.
  • the anchor 310 is fixed to the sea bottom through an anchor bolt or the like. Gravity-type structures that sink by self weight can be applied.
  • the mooring line 300 is installed in a tensile mooring structure having a tension between the substructure 200 and the anchor 310.
  • the mooring line 300 is pulled to pull the substructure 200 into the water against the buoyancy of the substructure 200 to be anchored to the anchor 310, and accordingly the mooring line 300 by the excess buoyancy Tension will be applied.
  • the mooring line 300 is mooring by giving a predetermined initial tension (pretension) according to the conditions of the equipment, the mooring line 300 is applied during operation such as the initial tension and the up and down fluctuation of the equipment to the mooring line 300
  • the specification is determined by considering the dynamic tension.
  • the column structure 400 is provided along the outer edges of the upper structure 100 and the lower structure 200 are provided in plural and are connected to each other, the connection form is formed to have an inclination.
  • the column structure 400 includes a first column member 410 and a second column member 420.
  • the first column member 410 has a length along the outer edge of the upper structure 100 is installed in plurality.
  • the second column member 420 is installed in plurality along the outer edge of the lower structure 200 to correspond to the installation position and the number of the first column member 410.
  • the second column member 420 is extended to be inclined upward toward the upper structure 100 so as to be connected to one end of the first column member 410.
  • the column structure 400 has an elliptical or streamlined connection form of the first column member 410 and the second column member 420, as shown in FIG.
  • the resistance can be minimized.
  • a structure that can overcome the wave drift force (current drift force) and the current force (current drift) is required for the stable securing of the floating body at sea, for this purpose, the upper structure 100, the lower structure 200 And it is possible to minimize the force acting on the facility by optimizing the shape of the float consisting of the columnar structure 300 to oval or streamline as described above.
  • the restoration buoyancy of the columnar structure 400 can be increased, and as a result, the action force of the relative buoyancy can be increased.
  • the outer diameter of the second column structure 420 can be gradually reduced through the inclined shape as described above, the resistance according to the blue can be minimized and the auxiliary facilities such as mooring facilities can be reduced as the resistance becomes smaller. have.
  • the floating body according to the present embodiment is preferably designed in a mooring manner by one point so as to receive the minimum water resistance in the current direction, and accordingly, posture control may be possible to have an optimal action force according to the direction of the current and waves.
  • a multipoint mooring method is often used to fix offshore structures.
  • the contact area of external force varies according to the direction of tidal currents (or currents). have.
  • the float in an elliptical or streamlined form as in the present embodiment, and to change the design from the general multipoint mooring method to the one point mooring method through the mooring mooring line 300.
  • the present invention minimizes the wave drift force applied to the floating body by minimizing the water surface area of the floating body and at the same time designing the shape of the floating body in a streamlined or oval shape to minimize the current flow force applied to the floating body, It has the effect of making stable bakbak.
  • the present invention by the installation form of the column constituting the side of the float in the form of inclined upward from the bottom to the top rather than vertical, it is possible to increase the restoring buoyancy of the float according to the inclination of the column, Therefore, it has an effect of increasing the action force of the relative buoyancy.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The present invention comprises: an upper structure formed to be mounted by a wind power generation part; a lower structure formed of a buoyant material and supporting the upper structure; a mooring line which connects the lower structure and a sea bed to moor the lower structure; and column structures connected to each other and installed, respectively, along outer edges of the upper structure and the lower structure, the column structures being formed such that the connections are at an incline.

Description

부유식 해상 풍력발전설비Floating Offshore Wind Power Plant

본 발명은 부유식 해상 풍력발전설비에 관한 것으로서, 더욱 상세하게는 파 표류력(wave drift force) 및 해류력(current force)을 극복할 수 있는 구조의 부유체를 제작하여 해상에서의 안정적인 고박이 이루어지도록 하는 부유식 해상 풍력발전설비에 관한 것이다.The present invention relates to a floating offshore wind turbine, and more particularly, to produce a floating body having a structure that can overcome the wave drift force (current drift force) and current force (stable power) It relates to a floating offshore wind power plant to be made.

일반적으로, 지구온난화에 따른 환경규제와 화석 연료의 수급불안 등과 같은 문제점이 대두되어 신재생 에너지 생산시스템으로서 풍력발전이 각광을 받고 있다.In general, wind power generation has been spotlighted as a renewable energy production system due to problems such as environmental regulation and unstable supply and demand of fossil fuels due to global warming.

이러한 풍력발전설비는 주로 육상에 설치되어 왔으나, 점차적으로 해상 설치가 증가하고 있으며, 풍력발전을 위해 해상은 육상에 비해 바람의 질이 대체로 좋은 편이며, 날개 소음 문제에 있어서도 보다 쉽게 대응할 수 있는 장점이 있다.These wind power installations have been installed mainly on land, but the installation of sea is gradually increasing. For wind power, the quality of wind is generally better than that of land, and it is easier to respond to the problem of wing noise. There is this.

특히, 경제성 확보를 위해서는 대규모의 단지 확보가 요망되는데, 육상에는 이러한 대규모 단지를 구비하기 어렵기 때문에, 연안이나 근해의 해상이 대단위 해상 풍력단지로 떠오르고 있다.In particular, it is necessary to secure large-scale complexes to secure economic feasibility, and since such large-scale complexes are difficult to equip on land, offshore and offshore seas have emerged as large offshore wind farms.

한편, 풍력발전설비를 해상에 설치하기 위한 구조는 고정식과 부유식으로 나눌 수 있는데, 먼저 고정식 구조는 육상에서와 같이 구조물이 직접 해저면에 고정되어 환경하중을 구조적 변형으로 대응하는 형식이고, 또한 부유식은 수면에 떠있으며 자중, 부력, 환경 하중 및 계류력을 받고 있고, 구조물의 6 자유도 운동으로 환경하중을 이겨내는 방식이다.On the other hand, the structure for installing the wind power plant on the sea can be divided into fixed and floating, first, the fixed structure is a form that is directly fixed to the bottom of the sea, such as on land, to respond to environmental loads by structural deformation, and also The floating type is floating on the surface and is subjected to self weight, buoyancy, environmental load and mooring force, and overcomes environmental load by six degrees of freedom movement of the structure.

최근까지 해상 풍력발전설비는 고정식으로 주로 얕은 수심에 설치되었으나, 고정식 구조는 구조물이 해저면에 고정되어 있어 유리한 조업조건을 제공하는 반면, 수심이 깊어지면 구조물의 규모가 커지고 피로파괴의 위험성을 피하기 어려워지며, 또한 설비의 대형화 추세에 따라 구조물의 제작, 설치에 드는 비용이 천문학적으로 증가하게 된다.Until recently, offshore wind power plants were fixed and mainly installed at shallow depths. However, fixed structures provide favorable operating conditions because the structures are fixed to the ocean floor, while deeper waters increase the size of the structures and avoid the risk of fatigue destruction. In addition, as the size of equipment increases, the cost of manufacturing and installing the structure increases astronomically.

한편, 바람은 육상에서 멀어질수록 강하고 일정해지므로 발전효율을 높일 수 있기 때문에, 해안으로부터 멀리 떨어져 수심이 깊은 곳에서도 풍력발전의 개발 필요성이 제기되고 있으며, 그에 따라 수심이 깊어져도 구조물의 크기에 제한을 받지 않는 부유식 구조를 이용한 해상 풍력발전설비에 대한 많은 연구가 이루어지고 있다.On the other hand, since the wind is stronger and more constant as it moves away from the land, the power generation efficiency can be improved. Therefore, there is a need for developing wind power even in a deep water far from the coast. Much research is being done on offshore wind power plants using floating structures without limitation.

본 발명의 목적은, 부유체의 수표면 면적을 최소화하여 부유체로 가해지는 파 표류력을 최소화함과 동시에 부유체의 형상을 유선형 또는 타원형으로 설계하여 부유체로 가해지는 해류력를 최소화함으로써, 해상에서 부유체의 안정적인 고박이 이루어지도록 하는 부유식 해상 풍력발전설비를 제공함에 있다.An object of the present invention is to minimize the wave surface force applied to the floating body by minimizing the water surface area of the floating body and at the same time, by designing the shape of the floating body in a streamlined or oval shape to minimize the current flowing to the floating body, It is to provide a floating offshore wind power plant to ensure a stable solid state of the fluid.

본 발명에 따른 부유식 해상 풍력발전설비는 풍력발전부가 탑재되도록 형성되는 상부구조물과 상기 상부구조물을 지지하며, 부력체로 형성되는 하부구조물과 상기 하부구조물을 계류시키기 위하여 상기 하부구조물과 해저면을 연결하는 계류라인 및 상기 상부구조물 및 상기 하부구조물의 외측 테두리를 따르며 각각 설치되어 서로 연결되고, 연결 형태가 경사를 가지도록 형성되는 컬럼구조물을 포함하는 것을 특징으로 한다.Floating offshore wind power generation equipment according to the present invention supports the upper structure and the upper structure is formed so that the wind power generation unit, connecting the substructure and the seabed to moor the substructure and the substructure formed by buoyancy body The mooring line and along the outer edge of the upper structure and the lower structure are respectively installed and connected to each other, characterized in that it comprises a column structure formed to have an inclined connection form.

이러한 상기 컬럼구조물은 상기 상부구조물의 외측 테두리를 따라 길이를 가지며 복수개로 설치되는 제1컬럼부재 및 상기 하부구조물의 외측 테두리를 따라 설치되고, 상기 상부구조물을 향하여 상향 경사지도록 연장되어 상기 제1컬럼부재의 일단부와 연결되는 제2컬럼부재를 구비한다.The column structure has a length along the outer edge of the upper structure and is installed along a plurality of first column members and the outer edge of the lower structure, extending to be inclined upward toward the upper structure the first column And a second column member connected to one end of the member.

여기서, 상기 컬럼구조물은 상기 제1컬럼부재 및 상기 제2컬럼부재의 연결 형태가 타원형 또는 유선형을 이루도록 경사를 가지며 형성된다,Here, the column structure is formed with an inclination so that the connection form of the first column member and the second column member to form an oval or streamlined,

본 발명은, 부유체의 수표면 면적을 최소화하여 부유체로 가해지는 파 표류력을 최소화함과 동시에 부유체의 형상을 유선형 또는 타원형으로 설계하여 부유체로 가해지는 해류력를 최소화함으로써, 해상에서 부유체의 안정적인 고박이 이루어지도록 하는 효과를 갖는다.The present invention minimizes the wave drift force applied to the floating body by minimizing the water surface area of the floating body and at the same time designing the shape of the floating body in a streamlined or oval shape to minimize the current flow force applied to the floating body, It has the effect of making stable bakbak.

또한, 본 발명은 부유체의 측면을 이루는 컬럼의 설치 형태가 수직이 아닌 하부에서 상부를 향해 상향 경사진 형태로 이루어지게 함으로써, 컬럼의 경사에 따른 부유체의 복원부력을 증가시킬 수 있고, 그에 따라 상대적 부력의 작용력을 크게 할 수 있도록 하는 효과를 갖는다.In addition, the present invention by the installation form of the column constituting the side of the float in the form of inclined upward from the bottom to the top rather than vertical, it is possible to increase the restoring buoyancy of the float according to the inclination of the column, Therefore, it has an effect of increasing the action force of the relative buoyancy.

도 1 은 본 발명의 실시예에 따른 부유식 해상 풍력발전설비를 개략적으로 보여주는 도면이다.1 is a view schematically showing a floating offshore wind power plant according to an embodiment of the present invention.

이하, 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시 예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 이점 및 특징, 그리고 그것을 달성하는 방법은 첨부된 도면과 함께 상세하게 후술 되어 있는 실시 예들을 참조하면 명확해질 것이다.Advantages and features of the present invention, and a method of achieving the same will be apparent with reference to the embodiments described below in detail with reference to the accompanying drawings.

그러나, 본 발명은 이하에 개시되는 실시 예들에 의해 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시 예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다.However, the present invention is not limited by the embodiments disclosed below, but will be implemented in various different forms, only the embodiments are to make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.

또한, 본 발명을 설명함에 있어 관련된 공지 기술 등이 본 발명의 요지를 흐리게 할 수 있다고 판단되는 경우 그에 관한 자세한 설명은 생략하기로 한다.In addition, in the following description of the present invention, if it is determined that related related technologies and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

도 1 은 본 발명의 실시예에 따른 부유식 해상 풍력발전설비를 개략적으로 보여주는 도면이다.1 is a view schematically showing a floating offshore wind power plant according to an embodiment of the present invention.

도 1에 도시된 바와 같이, 본 실시예에 따른 부유식 해상 풍력발전설비는 상부구조물(100), 하부구조물(200), 계류라인(300) 및 컬럼구조물(500)을 포함한다.As shown in FIG. 1, the floating offshore wind turbine according to the present embodiment includes an upper structure 100, a lower structure 200, a mooring line 300, and a column structure 500.

먼저, 상부구조물(100)은 풍력발전부가 탑재되도록 형성된다.First, the upper structure 100 is formed to be mounted on the wind turbine.

즉, 상부구조물(100)은 소정의 크기를 가지며 형성되고, 해상에 노출되도록 구비되는 것으로서, 상부구조물(100)에 탑재되는 풍력발전부는 도면에 도시되지는 않았으나 일반적으로 로터와, 로터를 회전 가능하게 지지하는 나셀(nacelle)을 구비할 수 있고, 또한 발전장치나 축전장치 또는 송전장치를 더 구비할 수 있다.That is, the upper structure 100 is formed to have a predetermined size and is provided to be exposed to the sea, and the wind power generator mounted on the upper structure 100 is not shown in the drawing, but in general, the rotor and the rotor can rotate. It may be provided with a nacelle (nacelle) to support it, and may further include a power generation device, power storage device or power transmission device.

하부구조물(200)은 상부구조물(100)과 수직 방향을 따라 이격되어 배치되는 구조로서, 상부구조물(100) 및 풍량발전부의 중량을 부력으로 지지하는 부력체로 형성된다.The lower structure 200 is a structure arranged to be spaced apart from the upper structure 100 in a vertical direction, and is formed as a buoyancy body that supports the weight of the upper structure 100 and the wind power generating unit with buoyancy.

이러한 하부구조물(200)은 수직 실린더 형태로 이루어지는 것이 바람직하나, 이는 예시일 뿐 어느 하나의 특별한 형태로 한정되는 것은 아니다.The substructure 200 is preferably made in the form of a vertical cylinder, but this is only an example and is not limited to any one special form.

또한, 하부구조물(200)은 내부가 빈 중공 구조로서 부력을 생성할 수 있도록 구성되며, 이를 위해 부력중심 밑에 중력중심을 두기 위한 발라스트(ballast)가 하부에 탑재될 수 있다.In addition, the lower structure 200 is configured to generate a buoyancy as a hollow hollow structure, the ballast (ballast) for placing the center of gravity under the buoyancy center for this purpose may be mounted on the bottom.

계류라인(300)은 하부구조물(200)을 계류시키기 위하여 하부구조물(200)과 해저면을 연결한다.The mooring line 300 connects the substructure 200 and the sea bottom to moor the substructure 200.

본 실시예에서 계류라인(300)의 개수는 한 개로 이루어지며, 이와 같이 단일의 계류라인(300)에 의해 설비가 계류됨으로써, 계류라인(300) 자체의 개수를 줄이고, 계류라인(300)의 앵커(anchor)(310) 설치 작업을 최소화할 수 있게 된다.In the present embodiment, the number of mooring lines 300 is one, so that the equipment is moored by a single mooring line 300, thereby reducing the number of mooring lines 300 itself, the mooring line 300 It is possible to minimize the installation work of the anchor 310.

여기서, 계류라인(300)은 강성을 갖는 와이어로프(wire rope)로 이루어질 수 있으며, 와이어로프는 소선을 꼬아 만든 스트랜드(strand)를 단일 또는 복수개의 층으로 꼬아 합친 구조일 수 있으나, 이는 특별히 한정되는 것은 아니다.Here, the mooring line 300 may be made of a wire rope having rigidity, and the wire rope may be a structure in which strands made by twisting wires are twisted together in a single or a plurality of layers. It doesn't happen.

계류라인(300)의 상단은 하부구조물(200)의 하단에 고정 설치되고, 하단에는 앵커(310)가 설치되어 해저면에 고정된다.The top of the mooring line 300 is fixed to the bottom of the lower structure 200, the anchor 310 is installed on the bottom is fixed to the bottom.

앵커(310)는 계류라인(300)으로 연결되는 하부구조물(200)을 미리 설정된 위치에 계류하기 위한 것으로서, 예를 들어 앵커볼트 등을 통해 해저면에 고정되는 구조나 또는 닻이나 콘크리트 구조물 등의 자중에 의해 가라 앉는 중력식 구조가 적용될 수 있다.The anchor 310 is for mooring the lower structure 200 connected to the mooring line 300 at a predetermined position. For example, the anchor 310 is fixed to the sea bottom through an anchor bolt or the like. Gravity-type structures that sink by self weight can be applied.

계류라인(300)은 하부구조물(200)과 앵커(310) 사이에 장력을 갖는 인장 계류 구조로 설치된다.The mooring line 300 is installed in a tensile mooring structure having a tension between the substructure 200 and the anchor 310.

즉, 계류라인(300)은 하부구조물(200)의 부력에 대항하여 하부구조물(200)을 수중으로 끌어내리도록 당겨져 앵커(310)에 계류되며, 그에 따라 계류라인(300)에는 잉여부력에 의한 장력(tension)이 걸려있게 된다.That is, the mooring line 300 is pulled to pull the substructure 200 into the water against the buoyancy of the substructure 200 to be anchored to the anchor 310, and accordingly the mooring line 300 by the excess buoyancy Tension will be applied.

계류라인(300)은 설비의 조건에 따라 미리 설정된 초기 장력(pretension)을 부여하여 계류하며, 이에 계류라인(300)은 계류라인(300)에 걸리는 초기 장력과 설비의 상하 동요와 같이 운전 중에 걸리는 동적 장력(dynamic tension)을 고려하여 그 제원을 결정한다.The mooring line 300 is mooring by giving a predetermined initial tension (pretension) according to the conditions of the equipment, the mooring line 300 is applied during operation such as the initial tension and the up and down fluctuation of the equipment to the mooring line 300 The specification is determined by considering the dynamic tension.

한편, 컬럼구조물(400)은 상부구조물(100) 및 하부구조물(200)의 외측 테두리를 따르며 복수개로 각각 설치되어 서로 연결되고, 그 연결 형태가 경사를 가지도록 형성된다.On the other hand, the column structure 400 is provided along the outer edges of the upper structure 100 and the lower structure 200 are provided in plural and are connected to each other, the connection form is formed to have an inclination.

이를 위해, 컬럼구조물(400)은 제1컬럼부재(410) 및 제2컬럼부재(420)를 구비한다.To this end, the column structure 400 includes a first column member 410 and a second column member 420.

제1컬럼부재(410)는 상부구조물(100)의 외측 테두리를 따라 길이를 가지며 복수개로 설치된다.The first column member 410 has a length along the outer edge of the upper structure 100 is installed in plurality.

제2컬럼부재(420)는 제1컬럼부재(410)의 설치 위치 및 개수에 대응하도록 하부구조물(200)의 외측 테두리를 따라 복수개로 설치된다.The second column member 420 is installed in plurality along the outer edge of the lower structure 200 to correspond to the installation position and the number of the first column member 410.

이러한 제2컬럼부재(420)는 상부구조물(100)을 향하여 상향 경사지도록 연장 형성되어 제1컬럼부재(410)의 일단부와 연결된다.The second column member 420 is extended to be inclined upward toward the upper structure 100 so as to be connected to one end of the first column member 410.

그에 따라, 컬럼구조물(400)은 제1컬럼부재(410) 및 제컬럼부재(420)의 연결 형태가 도 1에 도시된 바와 같이 타원형 또는 유선형으로 이루어지며, 이러한 형태 특징을 통해 해류에 의한 수저항을 최소화 할 수 있다.Accordingly, the column structure 400 has an elliptical or streamlined connection form of the first column member 410 and the second column member 420, as shown in FIG. The resistance can be minimized.

즉, 해상에서 부유체의 안정적인 고박을 위해서는 파 표류력(wave drift force) 및 해류력(current force)을 극복할 수 있는 구조가 필요하게 되는데, 이를 위해 상부구조물(100), 하부구조물(200) 및 컬럼구조물(300)로 이루어진 부유체의 형상을 상기와 같이 타원형 또는 유선형으로 최적화하여 설비에 작용하는 힘이 최소화되도록 할 수 있다.That is, a structure that can overcome the wave drift force (current drift force) and the current force (current drift) is required for the stable securing of the floating body at sea, for this purpose, the upper structure 100, the lower structure 200 And it is possible to minimize the force acting on the facility by optimizing the shape of the float consisting of the columnar structure 300 to oval or streamline as described above.

다시 말해, 부유체로 가해지는 해류력을 최소화하기 위하여 부유체를 유선형 또는 타원형으로 설계하여 수저항을 최소화할 수 있으며, 또한 컬럼구조물(400)의 직경을 최소화 하여 부유체의 수표면 면적을 최소화 함으로써, 부유체로 가해지는 파 표류력을 최소화할 수 있다.In other words, in order to minimize the current flow to the float to minimize the water resistance by designing the float in a streamlined or oval shape, and also by minimizing the diameter of the column structure 400 by minimizing the surface area of the float As a result, the wave drift force applied to the floating body can be minimized.

더 자세히 설명하면, 부유체의 횡방향 또는 종방향의 복원력 확보를 위하여 상부구조물(100) 및 하부구조물(200)을 연결하는 컬럼구조물(400)의 연결 형태를 수직이 아닌 경사를 가지게 함으로써, 경사에 따른 컬럼구조물(400)의 복원 부력이 증가되게 할 수 있고, 결과적으로는 상대적 부력의 작용력을 크게 할 수 있다.In more detail, in order to secure the restoring force in the transverse or longitudinal direction of the floating body by making the connection form of the column structure 400 connecting the upper structure 100 and the lower structure 200 to have a non-vertical inclination, The restoration buoyancy of the columnar structure 400 can be increased, and as a result, the action force of the relative buoyancy can be increased.

그에 따라, 상기와 같은 경사진 형상을 통하여 제2컬럼구조물(420)의 외경을 점진적으로 줄일 수 있기 때문에, 파랑에 따른 저항력을 최소화하고, 저항력이 작아짐에 따라 계류설비 등의 부대시설을 줄일 수 있다.Accordingly, since the outer diameter of the second column structure 420 can be gradually reduced through the inclined shape as described above, the resistance according to the blue can be minimized and the auxiliary facilities such as mooring facilities can be reduced as the resistance becomes smaller. have.

이때, 본 실시예에 따른 부유체는 해류 방향에서 최소 수저항을 받도록 원 포인트로 계류 방식으로 설계하는 것이 바람직하며, 그에 따라 해류 및 파도의 방향에 따라 최적 작용력을 가지도록 자세 제어가 가능할 수 있다,At this time, the floating body according to the present embodiment is preferably designed in a mooring manner by one point so as to receive the minimum water resistance in the current direction, and accordingly, posture control may be possible to have an optimal action force according to the direction of the current and waves. ,

일반적으로, 해양구조물을 고박하기 위해서는 다점 계류 방식을 많이 사용하는데, 이러한 경우 해양구조물에 대한 구속력이 증가하므로 조류(또는 해류) 방향에 따라 외력의 접촉면적이 달라지므로, 그에 따른 저항력이 증가될 수 있다.In general, a multipoint mooring method is often used to fix offshore structures. In this case, since the binding force to offshore structures increases, the contact area of external force varies according to the direction of tidal currents (or currents). have.

이러한 저항력을 줄이기 위해서, 본 실시예에서와 같이 부유체를 타원형 또는 유선형으로 제작함과 동시에, 일반적인 다점 계류 방식에서 계류 계류라인(300)을 통한 원 포인트 계류 방식으로 설계를 변경하는 것이 바람직하다.In order to reduce this resistance, it is preferable to manufacture the float in an elliptical or streamlined form as in the present embodiment, and to change the design from the general multipoint mooring method to the one point mooring method through the mooring mooring line 300.

본 발명은, 부유체의 수표면 면적을 최소화하여 부유체로 가해지는 파 표류력을 최소화함과 동시에 부유체의 형상을 유선형 또는 타원형으로 설계하여 부유체로 가해지는 해류력를 최소화함으로써, 해상에서 부유체의 안정적인 고박이 이루어지도록 하는 효과를 갖는다.The present invention minimizes the wave drift force applied to the floating body by minimizing the water surface area of the floating body and at the same time designing the shape of the floating body in a streamlined or oval shape to minimize the current flow force applied to the floating body, It has the effect of making stable bakbak.

또한, 본 발명은 부유체의 측면을 이루는 컬럼의 설치 형태가 수직이 아닌 하부에서 상부를 향해 상향 경사진 형태로 이루어지게 함으로써, 컬럼의 경사에 따른 부유체의 복원부력을 증가시킬 수 있고, 그에 따라 상대적 부력의 작용력을 크게 할 수 있도록 하는 효과를 갖는다.In addition, the present invention by the installation form of the column constituting the side of the float in the form of inclined upward from the bottom to the top rather than vertical, it is possible to increase the restoring buoyancy of the float according to the inclination of the column, Therefore, it has an effect of increasing the action force of the relative buoyancy.

이상의 본 발명은 도면에 도시된 실시 예(들)를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형이 이루어질 수 있으며, 상기 설명된 실시예(들)의 전부 또는 일부가 선택적으로 조합되어 구성될 수도 있다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 청구범위의 기술적 사상에 의해 정해여야 할 것이다.Although the present invention has been described with reference to the embodiment (s) shown in the drawings, this is merely exemplary, and various modifications can be made therefrom by those skilled in the art, and the embodiments described above It will be appreciated that all or part of the (s) may be optionally combined. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

Claims (3)

풍력발전부가 탑재되도록 형성되는 상부구조물;An upper structure formed to be mounted on the wind power generator; 상기 상부구조물을 지지하며, 부력체로 형성되는 하부구조물;A lower structure supporting the upper structure and formed of a buoyancy body; 상기 하부구조물을 계류시키기 위하여 상기 하부구조물과 해저면을 연결하는 계류라인; 및A mooring line connecting the substructure and the sea bottom to moor the substructure; And 상기 상부구조물 및 상기 하부구조물의 외측 테두리를 따르며 각각 설치되어 서로 연결되고, 연결 형태가 경사를 가지도록 형성되는 컬럼구조물;을 포함하는 것을 특징으로 하는 부유식 해상 풍력발전설비.Floating offshore wind turbines, characterized in that the column structure is formed along the outer edge of the upper structure and the lower structure is connected to each other, the connection form is formed to have a slope. 청구항 1에 있어서,The method according to claim 1, 상기 컬럼구조물은,The column structure, 상기 상부구조물의 외측 테두리를 따라 길이를 가지며 복수개로 설치되는 제1컬럼부재; 및A first column member having a length along an outer edge of the upper structure and installed in plurality; And 상기 하부구조물의 외측 테두리를 따라 설치되고, 상기 상부구조물을 향하여 상향 경사지도록 연장되어 상기 제1컬럼부재의 일단부와 연결되는 제2컬럼부재;를 구비하는 것을 특징으로 하는 부유식 해상 풍력발전설비.Floating offshore wind turbine is installed along the outer edge of the lower structure, the second column member extending to be inclined upward toward the upper structure connected to one end of the first column member; . 청구항 2에 있어서,The method according to claim 2, 상기 컬럼구조물은,The column structure, 상기 제1컬럼부재 및 상기 제2컬럼부재의 연결 형태가 타원형 또는 유선형을 이루도록 경사를 가지며 형성되는 것을 특징으로 하는 부유식 해상 풍력발전설비.Floating offshore wind turbine is characterized in that the inclined form to form an elliptical or streamline connection of the first column member and the second column member.
PCT/KR2017/008395 2017-03-24 2017-08-03 Floating type offshore wind power generation plant Ceased WO2018174348A1 (en)

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