KR20230095520A - Offshore wind power equipment of floating type - Google Patents

Offshore wind power equipment of floating type Download PDF

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Publication number
KR20230095520A
KR20230095520A KR1020210185088A KR20210185088A KR20230095520A KR 20230095520 A KR20230095520 A KR 20230095520A KR 1020210185088 A KR1020210185088 A KR 1020210185088A KR 20210185088 A KR20210185088 A KR 20210185088A KR 20230095520 A KR20230095520 A KR 20230095520A
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South Korea
Prior art keywords
floating
wind power
offshore wind
damping member
power generator
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KR1020210185088A
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Korean (ko)
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김응수
박규식
노명현
김우영
오진수
우식광
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주식회사 포스코
에스케이에코플랜트(주)
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Priority to KR1020210185088A priority Critical patent/KR20230095520A/en
Publication of KR20230095520A publication Critical patent/KR20230095520A/en

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    • 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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B2039/067—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water effecting motion dampening by means of fixed or movable resistance bodies, e.g. by bilge keels
    • 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
    • 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
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • 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
    • F05B2240/97—Mounting on supporting structures or systems on a submerged structure
    • 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
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • F05B2260/964—Preventing, counteracting or reducing vibration or noise by damping means
    • 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

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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)
  • Wind Motors (AREA)

Abstract

A floating type offshore wind power generation device is disclosed to ensure motion stability by securing resistance against heave motion. According to one aspect of the present invention, provided is a floating type offshore wind power generation device comprising a floating structure for supporting a wind turbine which generates electricity using wind power generated at sea, wherein the floating structure comprises a floating body having buoyancy to float on the sea and a damping member installed on the floating body and opened at the bottom, and the damping member is provided so that the open bottom is immersed in seawater, thereby increasing the fluid added mass.

Description

부유식 해상 풍력발전장치{Offshore wind power equipment of floating type}Offshore wind power equipment of floating type}

본 발명은 해상에 부유하도록 설치되며, 해상에서 발생하는 바람을 이용하여 전기를 생산하는 부유식 해상 풍력발전장치에 관한 것이다.The present invention relates to a floating offshore wind power generator that is installed to float on the sea and produces electricity using wind generated at sea.

친환경 에너지 개발에 대한 요구가 증대됨에 따라, 풍력 발전기를 활용한 발전이 전세계적으로 각광을 받고 있다. 그런데, 풍력 발전기를 설치하기 위해서는 까다로운 환경적인 조건이 요구된다.As the demand for eco-friendly energy development increases, power generation using wind power generators is in the limelight worldwide. However, demanding environmental conditions are required to install a wind power generator.

예를 들어, 풍력 발전기가 설치되는 장소는 블레이드의 유의미한 회전을 얻기 위한 일정 수준 이상의 풍속이 보장될 수 있는 곳이어야 하고, 풍력 발전기의 구동 시 발생되는 소음에 따른 공해가 이슈가 되지 않아야 하는 곳이어야 한다. 또한, 이러한 환경적인 조건을 만족한다고 하더라도, 풍력 발전기를 설치하기 위해서는 매우 넓은 면적의 공간이 필요하다.For example, the place where the wind turbine is installed must be a place where wind speed above a certain level can be guaranteed to obtain meaningful rotation of the blades, and pollution caused by noise generated when the wind turbine is driven must not be an issue. do. In addition, even if these environmental conditions are satisfied, a very large area of space is required to install the wind power generator.

최근에는 위와 같은 제약 조건으로부터 상대적으로 자유로운 해상 풍력 발전기에 대한 관심이 증가하고 있다. 해상 풍력발전장치는 크게 발전설비를 해상에 설치하는 방법에 따라 고정식과 부유식으로 나눌 수 있다. 고정식은 수심이 깊지 않은 바다의 해저기반에 기초공사를 하고, 그 위에 구조물 및 발전설비를 설치하는 방식이다. 부유식은 해상에 떠있는 부유체 위에 발전설비를 고정 시키고, 부유체의 운동을 계류 시스템으로 제어하는 방식이다.Recently, interest in offshore wind power generators that are relatively free from the above constraints has increased. Offshore wind power generators can be largely divided into fixed and floating types according to the method of installing power generation facilities on the sea. The fixed type is a method in which foundation work is done on the seabed foundation of the sea where the depth is not deep, and structures and power generation facilities are installed on it. The floating type is a method in which power generation equipment is fixed on a floating body floating on the sea and the movement of the floating body is controlled by a mooring system.

여기서, 부유식의 경우 수심에 따른 구조물의 제한이 적기 때문에 강한 바람을 통해 발전효율을 높이기 유리한 수심이 깊은 원해에 용이하게 설치될 수 있다.Here, in the case of a floating type, it can be easily installed in deep waters where it is advantageous to increase power generation efficiency through strong winds because there are few restrictions on the structure according to the depth of the water.

이러한 부유식 해상 풍력발전장치는 운동안정성 확보 측면에서 가장 유용한 구조물은 하부구조물인 부유체에 있다. 즉, 부유체는 다양한 형태와 구조를 가지고 있으며, 그 형태에 따라 운용중에 발생할 수 있는 다양한 거동에 대한 장단점을 가지게 된다. 특히, 부유식 해상 풍력발전장치의 운용 중 발생하는 다양한 거동 중 바람, 파랑, 조류 등에 의한 히브운동(heaving : 상하동요)를 저감시키는 것이 전체 안정성을 증가시키는 관점에서 매우 중요하다. 이러한 부유체의 운동응답을 줄이기 위해서는 감쇠력을 높이거나 부가질량을 증가시켜야 한다.In this floating offshore wind power generator, the most useful structure in terms of ensuring motion stability is in the floating body, which is a lower structure. That is, the floating body has various shapes and structures, and depending on the shape, it has advantages and disadvantages for various behaviors that may occur during operation. In particular, it is very important from the viewpoint of increasing overall stability to reduce heaving (heaving) caused by wind, waves, currents, etc. among various behaviors occurring during the operation of a floating offshore wind power generator. In order to reduce the motion response of the floating body, the damping force must be increased or the added mass must be increased.

이에, 종래에는 인위적으로 부가질량과 감쇠력을 증가시키기 위해 부유구조물에 나선형이나 원판 형태의 부착물(이하 '감쇠판'이라 함)을 설치하고 있다.Accordingly, conventionally, in order to artificially increase the additional mass and damping force, a spiral or disk-shaped attachment (hereinafter referred to as 'damping plate') is installed on the floating structure.

그러나, 평판 형태의 감쇠판은 유체와 접촉하는 면적에 비례하여 감쇠력이 커지기 때문에 과도한 부유체의 거동을 감쇠시키기 위해서는 평판의 면적이 과도하게 증가할 수 밖에 없어 부유구조물의 제작비가 상승하는 문제점이 있다.However, since the damping force of the damping plate in the form of a flat plate increases in proportion to the area in contact with the fluid, there is a problem in that the manufacturing cost of the floating structure rises because the area of the flat plate must be excessively increased in order to damp the excessive behavior of the floating body. .

또한, 부유구조물이 다수의 부유체(폰툰)로 구성되는 경우 부유체 간의 설치간격에 제한이 발생하여 감쇠판의 크기는 한정될 수 밖에 없다는 문제점이 있다.In addition, when the floating structure is composed of a plurality of floating bodies (pontoons), there is a problem in that the size of the damping plate is inevitably limited because the installation interval between the floating bodies is limited.

본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치는 부유구조물의 감쇠력을 향상시킴은 물론, 유체 부가질량을 추가적으로 증가시켜 히브운동에 대항하는 저항력을 확보함으로써 운동안정성을 제공할 수 있도록 한다.The floating offshore wind turbine generator according to an embodiment of the present invention improves the damping force of the floating structure and additionally increases the additional mass of the fluid to secure resistance against the heave motion, thereby providing motion stability.

본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치는 설치면적이 커지지 않도록 하더라도 거동을 효율적으로 감소시킬 수 있으며, 또한 설치면적이 커지지 않아 부유체의 설치 간격에 제한을 완화시킬 수 있도록 한다.The floating offshore wind power generator according to an embodiment of the present invention can efficiently reduce the behavior even if the installation area is not increased, and also can relieve restrictions on the installation interval of the floating body because the installation area is not increased.

본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치는 종래의 감쇠판과 동일한 감쇠력을 확보하기 위한 기존 감쇠판 제작비보다 절감시킬 수 있도록 한다.The floating offshore wind turbine generator according to an embodiment of the present invention allows to reduce the manufacturing cost of the existing damping plate for securing the same damping force as the conventional damping plate.

본 발명의 일 측면에 따르면, 해상에서 발생되는 풍력을 이용하여 전력을 생산하는 풍력발전기를 지지하기 위한 부유구조물을 구비하는 부유식 해상 풍력발전장치에 있어서, 상기 부유구조물은, 해상에 부유하도록 부력을 가지는 부유체; 및 상기 부유체에 설치되며 하부가 개방된 감쇠부재;를 포함하고, 상기 감쇠부재는 개방된 하부가 해수에 잠기도록 마련되어 유체 부가질량이 증가하도록 하는 부유식 해상 풍력발전장치가 제공될 수 있다.According to one aspect of the present invention, in the floating offshore wind turbine generator having a floating structure for supporting a wind power generator for generating electric power using wind power generated at sea, the floating structure has buoyancy to float on the sea. A floating body having; and a damping member installed on the floating body and having an open lower portion, wherein the damping member is provided such that the open lower portion is submerged in seawater to increase the added mass of the fluid.

또한, 상기 감쇠부재는 상부가 밀폐된 박스 형태로 마련될 수 있다.In addition, the damping member may be provided in the form of a box with an upper portion sealed.

또한, 상기 부유체는 복수개로 마련되고, 상기 복수의 부유체를 연결하기 위한 연결부재를 더 구비할 수 있다.In addition, the floating body may be provided in plurality, and a connecting member for connecting the plurality of floating bodies may be further provided.

또한, 상기 감쇠부재는 상기 복수의 부유체에 각각 마련될 수 있다.In addition, the damping member may be provided on each of the plurality of floating bodies.

또한, 상기 감쇠부재는 부유체의 운동저감 운용에 따라 크기가 선택적으로 가변되도록 마련될 수 있다.In addition, the damping member may be provided so that the size is selectively variable according to the motion reduction operation of the floating body.

또한, 상기 감쇠부재는 상기 풍력발전기의 타워 하부에 설치될 수도 있다.In addition, the damping member may be installed below the tower of the wind turbine.

본 발명의 일 실시예에 따른 부유식 해상 풍력발전장치는 부유구조물의 감쇠력을 향상시킴은 물론, 유체 부가질량을 추가적으로 증가시켜 히브운동에 대항하는 저항력을 확보함으로써 운동안정성을 향상시킬 수 있다.The floating offshore wind turbine generator according to an embodiment of the present invention improves the damping force of the floating structure and improves motion stability by additionally increasing the additional mass of the fluid to secure the resistance against the heave motion.

또한, 부유구조물의 거동을 효율적으로 감소시키면서 설치면적이 커지지 않도록 하여 부유체의 설치 간격에 제한을 완화시킬 수 있다.In addition, while effectively reducing the behavior of the floating structure, it is possible to alleviate restrictions on the installation distance of the floating body by preventing the installation area from increasing.

또한, 종래의 감쇠판과 동일한 감쇠력을 확보하기 위한 기존 감쇠판 제작비보다 절감시킬 수 있다.In addition, it is possible to reduce the manufacturing cost of the existing damping plate for securing the same damping force as the conventional damping plate.

본 발명은 아래 도면들에 의해 구체적으로 설명될 것이지만, 이러한 도면은 본 발명의 바람직한 실시예를 나타낸 것이므로 본 발명의 기술사상이 그 도면에만 한정되어 해석되어서는 아니된다.
도 1은 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치를 개략적으로 나타내는 도면이다.
도 2는 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치에 마련된 감쇠부재의 설치상태를 나타내는 부분 발췌도이다.
도 3은 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치에 마련된 감쇠부재와 종래의 감쇠판을 비교한 상태를 나타내는 도면이다.
도 4는 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치를 나타내는 평면도이다.The present invention will be specifically described by the drawings below, but since these drawings show preferred embodiments of the present invention, the technical spirit of the present invention should not be construed as being limited to the drawings.
1 is a view schematically showing a floating offshore wind turbine generator according to an embodiment of the present invention.
Figure 2 is a partial excerpt showing the installation state of the damping member provided in the floating offshore wind power generator according to an embodiment of the present invention.
3 is a view showing a state in which a damping member provided in a floating offshore wind power generator according to an embodiment of the present invention and a conventional damping plate are compared.
Figure 4 is a plan view showing a floating offshore wind turbine generator according to an embodiment of the present invention.

이하에서는 본 발명의 실시 예를 첨부 도면을 참조하여 상세히 설명한다. 이하의 실시 예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 본 발명의 사상을 충분히 전달하기 위해 제시하는 것이다. 본 발명은 여기서 제시한 실시 예만으로 한정되지 않고 다른 형태로 구체화될 수도 있다. 도면은 본 발명을 명확히 하기 위해 설명과 관계 없는 부분의 도시를 생략하고, 이해를 돕기 위해 구성요소의 크기를 다소 과장하여 표현할 수 있다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented to sufficiently convey the spirit of the present invention to those skilled in the art. The present invention may be embodied in other forms without being limited to only the embodiments presented herein. In the drawings, in order to clarify the present invention, illustration of parts irrelevant to the description may be omitted, and the size of components may be slightly exaggerated to aid understanding.

도 1은 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치를 개략적으로 나타내는 도면이고, 도 2는 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치에 마련된 감쇠부재의 설치상태를 나타내는 부분 발췌도이고, 도 3은 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치에 마련된 감쇠부재와 종래의 감쇠판을 비교한 상태를 나타내는 도면이며, 도 4는 본 발명의 일 실시 예에 따른 부유식 해상 풍력발전장치를 나타내는 평면도이다.1 is a view schematically showing a floating offshore wind power generator according to an embodiment of the present invention, and FIG. 2 shows an installation state of a damping member provided in a floating offshore wind power generator according to an embodiment of the present invention. A partial excerpt, and FIG. 3 is a view showing a state in which a damping member provided in a floating offshore wind power generator according to an embodiment of the present invention and a conventional damping plate are compared, and FIG. It is a plan view showing a floating offshore wind power generator according to

도 1 내지 도 4를 참조하면, 본 발명의 일 측면에 따른 부유식 해상 풍력발전장치(1)는 풍력발전기(100)를 지지하는 부유구조물(200)을 구비할 수 있다. 또한, 부유구조물(200)은 부유체(210) 및 감쇠부재(230)를 포함할 수 있다.1 to 4, the floating offshore wind turbine generator 1 according to one aspect of the present invention may include a floating structure 200 supporting the wind turbine 100. In addition, the floating structure 200 may include a floating body 210 and a damping member 230 .

부유구조물(200)은 풍력발전기(100)를 지지하는 하부 구조물로서, 해상에서 부유할 수 있도록 부력을 갖는다. 보다 구체적으로, 부유구조물(200)은 해수면으로부터 부유되는 부유체(210)와, 부유체(210)에 설치되는 감쇠부재(230)를 갖는다.The floating structure 200 is a lower structure supporting the wind turbine 100 and has buoyancy so as to float on the sea. More specifically, the floating structure 200 has a floating body 210 floating from the sea level, and a damping member 230 installed on the floating body 210 .

부유체(210)는 원기둥 형상을 갖도록 형성될 수 있으나, 이에 한정되지 않으며, 사각기둥 또는 다각기둥 형상을 갖도록 형성될 수 있다.The floating body 210 may be formed to have a cylindrical shape, but is not limited thereto, and may be formed to have a square column or polygonal column shape.

또한, 부유체(210)는 운동안정성을 확보하기 위해 복수개로 마련될 수 있다. 예컨대, 복수의 부유체(210)는 삼각 구도로 배치되도록 마련될 수 있다. 또한, 그 중심에 풍력발전기(100)가 설치되는 부유체(210)가 마련될 수 있다. 이때, 풍력발전기(100)는 삼각 구도로 배치된 부유체(210) 중 어느 하나에 설치될 수도 있다.In addition, a plurality of floating bodies 210 may be provided to ensure motion stability. For example, the plurality of floating bodies 210 may be arranged in a triangular configuration. In addition, a floating body 210 in which the wind power generator 100 is installed may be provided at the center. At this time, the wind power generator 100 may be installed on any one of the floating bodies 210 arranged in a triangular composition.

이러한 부유체들(210)은 연결부재(220)에 의해 서로 연결되어 안정감 있게 부유할 수 있다. 여기서 연결부재(220)는 파이프로서 원형, 사각형 또는 다각형의 파이프가 될 수 있다.These floating bodies 210 are connected to each other by the connecting member 220 and can float stably. Here, the connecting member 220 is a pipe and may be a circular, rectangular or polygonal pipe.

풍력발전기(100)는 부유체(210) 상에 설치되어 해상에서 발생되는 풍력을 이용하여 전력을 생산하는 발전설비이다. 이러한 풍력발전기(100)는 복수의 부유체(210) 중 어느 하나의 상면 중심에 설치된다. 여기서, 풍력발전기(100)는 부유체(210)의 상면에 결합되는 타워(110)와, 타워(110)의 상부에 연결 설치되어 전기를 발생시키는 너셀(120) 및 너셀(120)에 회전 가능하게 설치되어 풍력에 의해 회전하는 블레이드(130)를 포함할 수 있다. 이러한 풍력발전기(100)는 공지된 다양한 풍력발전기의 구성을 포함할 수 있으며, 본 발명에 따른 부유체(210)에 적용될 수 있다.The wind power generator 100 is a power generation facility that is installed on the floating body 210 and produces power using wind power generated at sea. The wind turbine 100 is installed at the center of one of the plurality of floating bodies 210 . Here, the wind turbine 100 is rotatable to the tower 110 coupled to the upper surface of the floating body 210, the nacelle 120 connected to the top of the tower 110 and generating electricity, and the nacelle 120 It may include a blade 130 that is installed to rotate by wind power. This wind power generator 100 may include a configuration of various known wind power generators, and may be applied to the floating body 210 according to the present invention.

감쇠부재(230)는 부유체(210)에 설치되며 하부가 개방되게 마련된다. 예컨대, 감쇠부재(230)는 상부가 밀폐된 박스 형태로 마련될 수 있다. 도시된 바에 따르면, 감쇠부재(230)는 부유체(210)의 외관에 설치되는 평판 형상의 제1 플레이트(231)와, 제1 플레이트(231)의 가장자리로부터 하측으로 연장 형성되어 측벽을 이루는 제2 플레이트(232)로 구성될 수 있다. 이러한 감쇠부재(230)는 부유체(210)에 결합되어 하부가 개방된 상태로 마련된다. 즉, 제1 플레이트(231)와 제2 플레이트(232)에 의하여 그 하부측으로 추가적인 유체 부가질량이 발생되도록 한다.The damping member 230 is installed on the floating body 210 and is provided with an open bottom. For example, the damping member 230 may be provided in the form of a box with a closed top. As shown, the damping member 230 is a flat plate-shaped first plate 231 installed on the exterior of the floating body 210 and extends downward from the edge of the first plate 231 to form a side wall. It may be composed of two plates (232). The damping member 230 is coupled to the floating body 210 and is provided in an open lower portion. That is, an additional fluid added mass is generated to the lower side by the first plate 231 and the second plate 232 .

보다 구체적으로, 도 3의 (a)는 종래의 부유체(10)에 감쇠판(20)이 마련된 상태를 나타내고, 도 3의 (b)는 본 발명에 따른 감쇠부재(230)가 부유체(210)에 마련된 상태를 나타낸다. 여기서, 도 3에 해칭된 부분의 도면부호 P1은 종래의 감쇠판(20)에 의한 유체 부가질량을 나타내고, P2는 본 발명에 따른 감쇠부재(230)에 의한 추가적인 유체 부가질량을 임의적으로 나타낸 것이다. 즉, 도 3에 도시된 바와 같이, 본 발명에 따른 감쇠부재(230)는 종래에 비하여 추가적으로 유체 부가질량(P2)이 증가된 것을 확인할 수 있다. 이는 종래와 비교시 동일한 감쇠력을 가지고 있으나 추가적으로 유체 부가질량(P2)이 향상됨에 따라 히브운동에 대항하는 저항력이 향상되어 운동안정성을 제공할 수 있게 된다.More specifically, FIG. 3 (a) shows a state in which the damping plate 20 is provided in the conventional floating body 10, and FIG. 3 (b) shows the damping member 230 according to the present invention floating body ( 210). Here, the reference numeral P1 of the hatched portion in FIG. 3 represents the added fluid mass by the conventional damping plate 20, and P2 represents the additional fluid added mass by the damping member 230 according to the present invention. . That is, as shown in FIG. 3, it can be confirmed that the damping member 230 according to the present invention has an additional fluid added mass P2 increased compared to the prior art. This has the same damping force as compared to the prior art, but as the added fluid mass P2 is additionally improved, the resistance against the heave movement is improved to provide movement stability.

이러한 감쇠부재(230)는 복수의 부유체(210)에 각각 설치될 수 있다. 이때, 복수의 부유체(210)에 설치 시 종래에 비하여 유체 부가질량(P2)이 증가되어 유체와의 접촉면적을 증가시키기 않더라도 부유구조물(200)의 거동을 효율적으로 감소시킬 수 있어 부유체(210)의 설치 간격에 제한을 완화시킬 수 있게 된다. 이에, 부유구조물(200)의 운동저감 목적에 따라 적어도 하나의 감쇠부재(230)를 마련하거나, 감쇠부재(230)의 크기를 가변시켜 운용할 수 있는 설계 자유도가 향상될 수 있다.These damping members 230 may be installed on each of the plurality of floating bodies 210 . At this time, when installed in the plurality of floating bodies 210, the fluid added mass P2 is increased compared to the prior art, so that the behavior of the floating structure 200 can be effectively reduced without increasing the contact area with the fluid, so that the floating body ( 210) can alleviate the restrictions on the installation interval. Accordingly, the degree of freedom in design that can be operated by providing at least one damping member 230 or changing the size of the damping member 230 according to the purpose of reducing the motion of the floating structure 200 can be improved.

한편, 감쇠부재(230)는 유체의 부가질량을 확보하기 위해 단순 박스형태를 포함한 다양한 형태로 변형되어 사용될 수도 있다. 예컨대, 감쇠부재(230)는 부유체(210)에 설치되어 상부가 밀폐되고 하부가 개방된 형태라면 어떠한 형상을 갖더라도 무방하다.Meanwhile, the damping member 230 may be deformed and used in various shapes including a simple box shape in order to secure an additional mass of the fluid. For example, the damping member 230 may have any shape as long as it is installed on the floating body 210 and has a closed top and an open bottom.

더욱이, 감쇠부재(230)는 부유체(210) 뿐만 아니라, 풍력발전기(100)의 타워(110) 하부에 설치되어 사용될 수도 있다. 즉, 감쇠부재(230)는 유체와의 접촉면적에 따른 감쇠력과 함께 추가적인 유체 부가질량을 갖도록 이루어짐으로써 히브운동에 저항하는 설비의 다양한 위치에서 사용될 수 있다.Moreover, the damping member 230 may be installed and used below the tower 110 of the wind power generator 100 as well as the floating body 210 . That is, the damping member 230 is made to have a damping force according to the contact area with the fluid and an additional fluid added mass, so that it can be used in various positions of the equipment that resists the heave motion.

이상과 같이, 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those skilled in the art to which the present invention belongs Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

1 : 부유식 해상 풍력발전장치
100 : 풍력발전기
200 : 부유구조물
210 : 부유체
230 : 감쇠부재1: Floating offshore wind power generator
100: wind generator
200: floating structure
210: floating body
230: damping member

Claims (6)

해상에서 발생되는 풍력을 이용하여 전력을 생산하는 풍력발전기를 지지하기 위한 부유구조물을 구비하는 부유식 해상 풍력발전장치에 있어서,
상기 부유구조물은,
해상에 부유하도록 부력을 가지는 부유체; 및
상기 부유체에 설치되며 하부가 개방된 감쇠부재;를 포함하고,
상기 감쇠부재는 개방된 하부가 해수에 잠기도록 마련되어 유체 부가질량이 증가하도록 하는 부유식 해상 풍력발전장치.In the floating offshore wind power generator having a floating structure for supporting a wind power generator for generating power using wind power generated at sea,
The floating structure,
Floating bodies having buoyancy to float on the sea; and
Including; a damping member installed on the floating body and having an open bottom;
The damping member is a floating offshore wind power generator that is provided so that the open bottom is submerged in seawater to increase the fluid added mass. 제1항에 있어서,
상기 감쇠부재는 상부가 밀폐된 박스 형태로 마련되는 부유식 해상 풍력발전장치.According to claim 1,
The damping member is a floating offshore wind power generator provided in the form of a box with an upper portion sealed. 제1항에 있어서,
상기 부유체는 복수개로 마련되고,
상기 복수의 부유체를 연결하기 위한 연결부재를 더 구비하는 부유식 해상 풍력발전장치.According to claim 1,
The floating body is provided in plurality,
Floating offshore wind turbine generator further comprising a connecting member for connecting the plurality of floating bodies. 제3항에 있어서,
상기 감쇠부재는 상기 복수의 부유체에 각각 마련되는 부유식 해상 풍력발전장치.According to claim 3,
The damping member is a floating offshore wind power generator provided on each of the plurality of floating bodies. 제1항에 있어서,
상기 감쇠부재는 부유체의 운동저감 운용에 따라 크기가 선택적으로 가변되도록 마련되는 부유식 해상 풍력발전장치.According to claim 1,
The damping member is a floating offshore wind power generator provided to be selectively variable in size according to the motion reduction operation of the floating body. 제1항에 있어서,
상기 감쇠부재는 상기 풍력발전기의 타워 하부에 설치되는 부유식 해상 풍력발전장치.
According to claim 1,
The damping member is a floating offshore wind power generator installed below the tower of the wind turbine.
KR1020210185088A 2021-12-22 2021-12-22 Offshore wind power equipment of floating type KR20230095520A (en)

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