JP2014145346A - Ocean current power generation device and power transmission cable installation method of ocean current power generation device - Google Patents

Ocean current power generation device and power transmission cable installation method of ocean current power generation device Download PDF

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JP2014145346A
JP2014145346A JP2013015617A JP2013015617A JP2014145346A JP 2014145346 A JP2014145346 A JP 2014145346A JP 2013015617 A JP2013015617 A JP 2013015617A JP 2013015617 A JP2013015617 A JP 2013015617A JP 2014145346 A JP2014145346 A JP 2014145346A
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power generation
ocean current
cable
power transmission
transmission cable
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JP6187737B2 (en
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Hiroyuki Saito
宏幸 齊藤
Shigeki Nagaya
茂樹 長屋
Yoshiyuki Yamane
善行 山根
Norihisa Handa
典久 半田
Norio Asami
典男 淺海
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IHI Corp
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IHI Corp
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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
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

PROBLEM TO BE SOLVED: To provide an ocean current power generation device in which two mooring ropes for mooring a pair of power generation parts on the sea bottom and a power transmission cable for transmitting power can be prevented from being interfered or entangled with each other and maintenance management of the mooring ropes and the power transmission cable can also be facilitated, and a power transmission cable installation method thereof.SOLUTION: A twin-engined underwater floating power generation device comprises: a device body 2 including a pair of power generation parts 4, 4 each having a turbine 3 which is rotated by receiving an ocean current, and a concatenation beam 5 concatenating the power generation sections 4, 4 in parallel with each other; and two mooring ropes 6, 6 for mooring the device body 2 on the sea bottom B. Between the two mooring ropes 6, 6, a power transmission cable 8 from the power generation parts 4, 4 is disposed while being held by a plurality of cable holding mechanisms 10. Each of the cable holding mechanisms 10 includes tubular bodies 11, 11 mounted to the two mooring ropes 6, 6, a cable holding body 12 for holding the power transmission cable 8 in a slidable manner, and a bar 13 for concatenating the tubular bodies 11, 11 and the cable holding body 12.

Description

本発明は、海流（潮流）を受けて回転するタービンを有する発電部を備えた浮上及び沈降可能な水中浮遊式の海流発電装置及び海流発電装置の送電ケーブル設置方法に関するものである。   The present invention relates to a floating and sinking submerged floating ocean current power generator including a power generator having a turbine that rotates in response to a sea current (tidal current), and a method for installing a power transmission cable of the ocean current power generator.

近年、海流（潮流）等の海水の流れを利用して発電を行う海流発電装置が開発されている。
このような海水の流れを利用して発電を行う海流発電装置としては、例えば、特許文献１に記載されたものがあり、この海流発電装置は、いわゆる双発の水中浮遊式発電装置であって、海流を受けて回転する水平軸型のタービンを有する一対の発電部と、これらの発電部同士を並列に連結する連結ビームと、この連結ビームで一体化された一対の発電部を海底に設置したシンカーに係留する２本の係留索と、発電部で発電した電力を送る送電ケーブルを備えている。 2. Description of the Related Art In recent years, ocean current power generation apparatuses that generate electricity using a seawater flow such as an ocean current (tidal current) have been developed.
As an ocean current power generation device that generates power using such a flow of seawater, for example, there is a device described in Patent Document 1, and this ocean current power generation device is a so-called twin underwater floating power generation device, A pair of power generation units having a horizontal axis turbine that rotates in response to the ocean current, a connection beam that connects these power generation units in parallel, and a pair of power generation units that are integrated by this connection beam are installed on the seabed. Two mooring lines moored to the sinker and a transmission cable for sending the power generated by the power generation unit are provided.

この海流発電装置において、大きな張力がかかる係留索には、金属や高強度の素材が採用され、一方、送電ケーブルには、導線を絶縁材で被覆する構成が採用される。これらの係留索及び送電ケーブルは、上記した各々の用途及び構成が違う都合上、一本のケーブルに纏めることが困難であり、結局、これらの係留索及び送電ケーブルは個々に配置されて、一対の発電部又は連結ビームに対して別々に接続されるようになっている。   In this ocean current power generation device, a metal or a high-strength material is used for a mooring line to which a large tension is applied, while a configuration in which a conductor is covered with an insulating material is used for a power transmission cable. These mooring cables and transmission cables are difficult to be bundled into one cable because of the different uses and configurations described above. After all, these mooring cables and transmission cables are arranged individually, Are separately connected to the power generation unit or the connecting beam.

特開2002-266743号JP 2002-266743 A

上記したような水中浮遊式の海流発電装置において、一対の発電部は、海流の状況に応じて海底のシンカーを中心にした移動が許容されていることから、一対の発電部又は連結ビームに個々に接続される係留索及び送電ケーブルが、各々の配置状況や動作の違いによって互いに干渉したり絡んだりする虞があるという問題を有しており、これを解決することが従来の課題となっている。   In the underwater floating type ocean current power generation apparatus as described above, the pair of power generation units are allowed to move around the sinker on the seabed according to the current conditions. The mooring cable and power transmission cable connected to each other have a problem that they may interfere with each other or entangle with each other depending on the arrangement state and operation of each, and it is a conventional problem to solve this Yes.

本発明は、上記した従来の課題に着目してなされたもので、一対の発電部を海底に係留する２本の係留索及び電力を送る送電ケーブルが互いに干渉したり絡んだりするのを防ぐことができるうえ、係留索及び送電ケーブルの保守管理の容易化を実現することが可能である海流発電装置及び海流発電装置の送電ケーブル設置方法を提供することを目的としている。   The present invention has been made by paying attention to the above-described conventional problems, and prevents two mooring lines mooring a pair of power generation units on the seabed and a power transmission cable for transmitting power from interfering with each other or being entangled. It is another object of the present invention to provide an ocean current power generation apparatus and a method for installing a power transmission cable for an ocean current power generation apparatus that can facilitate the maintenance and management of mooring lines and transmission cables.

上記した目的を達成するために、本発明の請求項１に係る発明は、海流によるタービンの回転により発電する発電部と、前記発電部で発電した電力を送る送電ケーブルと、Ｖ字状やＹ字状に張られて前記発電部を海底に係留する２本の係留索を備えた海流発電装置において、前記送電ケーブルを前記２本の係留索間で保持する、好ましくは、２本の係留索間の中央で保持するケーブル保持機構が備えられている構成としたことを特徴としており、この構成の海流発電装置を前述した従来の課題を解決するための手段としている。   In order to achieve the above-described object, the invention according to claim 1 of the present invention includes a power generation unit that generates power by rotation of a turbine caused by an ocean current, a power transmission cable that transmits power generated by the power generation unit, a V-shape and a Y-shape. In an ocean current power generation apparatus provided with two mooring lines that are stretched in a letter shape and mooring the power generation section on the seabed, the power transmission cable is held between the two mooring lines, preferably two mooring lines A cable holding mechanism for holding in the middle is provided, and the ocean current power generation device having this configuration is used as a means for solving the above-described conventional problems.

ここで、海流により回転するタービンには、直径約４０ｍのものが用いられ、このタービンを有する発電部は、水深５０ｍ程度の位置にて係留され、いわゆる双発の水中浮遊式発電装置の場合、発電容量はおおよそ２ＭＷである。なお、この発電容量は仕様等の違いに応じて上下する。   Here, a turbine rotating about 40m in diameter is used as the turbine rotating by the ocean current, and the power generation unit having this turbine is moored at a position where the water depth is about 50m. The capacity is approximately 2 MW. The power generation capacity varies depending on the difference in specifications.

本発明の請求項２に係る海流発電装置において、前記ケーブル保持機構は、前記２本の係留索の双方に連結された状態で前記送電ケーブルを摺動可能に保持するケーブル保持体を具備し、前記２本の係留索間における前記送電ケーブルの複数個所に配置されている構成としている。   In the ocean current power generation device according to claim 2 of the present invention, the cable holding mechanism includes a cable holding body that slidably holds the power transmission cable in a state of being connected to both of the two mooring lines, It is set as the structure arrange | positioned in the several places of the said power transmission cable between the said two mooring lines.

本発明の請求項３に係る海流発電装置において、前記ケーブル保持機構は、海流を受けて生じる抵抗力を前記発電部に対して深度を増す方向の力として前記係留索を介して伝える抵抗体を具備している構成としている。   In the ocean current power generation device according to claim 3 of the present invention, the cable holding mechanism is configured to transmit a resistance force generated by receiving an ocean current through the mooring line as a force in a direction of increasing the depth to the power generation unit. It has the composition which has.

一方、本発明の請求項４に係る発明は、海流によるタービンの回転により発電する発電部と、前記発電部で発電した電力を送る送電ケーブルと、前記発電部を海底に係留する２本の係留索を備えた海流発電装置の前記送電ケーブルの設置方法であって、前記２本の係留索の双方に連結された状態で前記送電ケーブルを摺動可能に保持するケーブル保持体を具備したケーブル保持機構を該２本の係留索間における長さ方向の複数個所に配置して、一端を前記送電ケーブルに繋げたメッセンジャーロープを前記複数のケーブル保持機構の各ケーブル保持体に保持させ、前記複数のケーブル保持機構の各ケーブル保持体に前記送電ケーブルを保持させるべく、前記メッセンジャーロープの前記発電部側に位置させた他端を引き上げて該メッセンジャーロープを巻き取り、前記メッセンジャーロープの一端とともに手繰り寄せた前記送電ケーブルの端部を前記発電部に接続する構成としている。   On the other hand, the invention according to claim 4 of the present invention includes a power generation unit that generates power by rotating a turbine by an ocean current, a power transmission cable that transmits power generated by the power generation unit, and two moorings that moor the power generation unit on the seabed. A method of installing the power transmission cable of an ocean current power generation apparatus including a cable, wherein the cable holding device includes a cable holding body that slidably holds the power transmission cable in a state of being connected to both of the two mooring cables. The mechanism is disposed at a plurality of positions in the length direction between the two mooring lines, and a messenger rope having one end connected to the power transmission cable is held by each cable holding body of the plurality of cable holding mechanisms, In order to hold the power transmission cable in each cable holding body of the cable holding mechanism, the other end of the messenger rope positioned on the power generation unit side is pulled up to Winding the rope, the power transmitting end of the cable hauled one end of the messenger rope is configured to be connected to the power generating unit.

本発明に係る海流発電装置では、ケーブル保持機構が送電ケーブルを２本の係留索間で保持するので、２本の係留索及び送電ケーブルが一体化することとなり、その結果、一対の発電部が、海流の状況に応じて海底のシンカーを中心に移動したとしても、２本の係留索及び送電ケーブルが互いに干渉したり絡んだりすることが回避されることとなる。
この際、例え２本の係留索のうちの１本の係留索が切れたとしても、ケーブル保持機構によって送電ケーブルが残りの１本の係留索に留まるので、送電ケーブルが残りの１本の係留索から離れて動作することが阻止されることとなる。
加えて、２本の係留索及び送電ケーブルが一体化しているので、係留索及び送電ケーブルの保守管理の作業性が向上することとなる。 In the ocean current power generation device according to the present invention, since the cable holding mechanism holds the power transmission cable between the two mooring lines, the two mooring lines and the power transmission cable are integrated. Even if it moves around the sinker on the seabed according to the current situation, the two mooring lines and the power transmission cable are prevented from interfering with each other or being entangled.
At this time, even if one of the two mooring lines breaks, the cable holding mechanism keeps the transmission cable on the remaining one mooring line, so the transmission cable remains on the remaining one mooring line. It will be prevented from moving away from the rope.
In addition, since the two mooring lines and the power transmission cable are integrated, the workability of maintenance management of the mooring lines and the power transmission cable is improved.

また、本発明の請求項２に係る海流発電装置では、２本の係留索の双方に連結された状態で送電ケーブルを摺動可能に保持するケーブル保持体を具備したケーブル保持機構を２本の係留索間において複数個所に配置しているので、２本の係留索及び送電ケーブルが強固に一体化することとなり、２本の係留索及び送電ケーブルが互いに干渉したり絡んだりする虞がほとんど皆無となる。   Moreover, in the ocean current power generation device according to claim 2 of the present invention, two cable holding mechanisms including a cable holding body that slidably holds the power transmission cable in a state of being connected to both of the two mooring lines are provided. Since the mooring lines are arranged at a plurality of positions, the two mooring lines and the transmission cable are firmly integrated, and there is almost no possibility that the two mooring lines and the transmission cable interfere with each other or become entangled. It becomes.

さらに、本発明の請求項３に係る海流発電装置では、ケーブル保持機構が海流を受けて抵抗力を生じる抵抗体を具備しているので、例えば、バラストタンクを操作して発電部を所望の深度まで沈降させる際の一助となり、その分だけ、発電コストの低減が図られることとなる。   Furthermore, in the ocean current power generation device according to claim 3 of the present invention, the cable holding mechanism includes a resistor that generates a resistance force by receiving the ocean current. For example, the power generation unit is moved to a desired depth by operating a ballast tank. As a result, the power generation cost is reduced by that amount.

一方、本発明の請求項４に係る海流発電装置の送電ケーブル設置方法では、送電ケーブルを２本の係留索間に保持させて両者を一体化する作業が容易に成されることとなる。   On the other hand, in the method for installing a power cable of the ocean current power generation apparatus according to claim 4 of the present invention, the work of holding the power cable between the two mooring lines and integrating them is easily performed.

本発明に係る海流発電装置では、一対の発電部を海底に係留する２本の係留索及び電力を送る送電ケーブルが互いに干渉したり絡んだりするのを防ぐことが可能であり、加えて、係留索及び送電ケーブルの保守管理の容易化を実現することができるという非常に優れた効果がもたらされる。   In the ocean current power generation device according to the present invention, it is possible to prevent two mooring lines mooring a pair of power generation units on the seabed and a power transmission cable for transmitting power from interfering with each other or entangled. The excellent effect of facilitating the maintenance of the cable and the transmission cable can be achieved.

本発明の一実施例による海流発電装置を海流の下流側から見た説明図（ａ）及び図１（ａ）の楕円部分の拡大断面説明図（ｂ）である。It is explanatory drawing (a) which looked at the ocean current power generation device by one Example of this invention from the downstream of ocean current, and the expanded sectional explanatory drawing (b) of the ellipse part of Fig.1 (a). 図１における海流発電装置の送電ケーブルの設置要領を示す説明図（ａ）〜（ｃ）である。It is explanatory drawing (a)-(c) which shows the installation point of the power transmission cable of the ocean current power generator in FIG. 本発明の他の実施例による海流発電装置を示す図１（ａ）の楕円部分に相当する部分における拡大説明図（ａ）及び海流と直交する方向から見た説明図（ｂ）である。It is the expanded explanatory view (a) in the part corresponded to the elliptical part of Fig.1 (a) which shows the ocean current electric power generating apparatus by other Example of this invention, and explanatory drawing (b) seen from the direction orthogonal to an ocean current.

以下、本発明を図面に基づいて説明する。
図１及び図２は本発明に係る海流発電装置の一実施例を示している。 Hereinafter, the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of an ocean current power generation apparatus according to the present invention.

図１（ａ）に示すように、この海流発電装置１は、いわゆる双発の水中浮遊式発電装置であって、海流を受けて回転する水平軸型のタービン３を有する一対の発電部４，４と、これらの発電部４，４同士を並列に連結する連結ビーム５を具備した装置本体２を備えていると共に、この装置本体２を海底Ｂに係留する２本の係留索６，６を備えている。   As shown in FIG. 1 (a), this ocean current power generation device 1 is a so-called twin-engine underwater floating power generation device, and has a pair of power generation units 4, 4 each having a horizontal axis turbine 3 that rotates in response to the ocean current. And an apparatus main body 2 having a connecting beam 5 for connecting the power generation units 4 and 4 in parallel, and two mooring lines 6 and 6 for mooring the apparatus main body 2 to the seabed B. ing.

一対の発電部４，４の各タービン３，３は、各々の回転トルクを相殺するべく互いに反対方向に回転する。また、一対の発電部４，４には、深度計や角度センサが内蔵されているほか、海中における発電時に深度の調整を行うためのバラストタンクがそれぞれ内蔵されており、このバラストタンクは、必要に応じて連結ビーム５内にも配置される。   The turbines 3, 3 of the pair of power generation units 4, 4 rotate in directions opposite to each other so as to cancel each rotational torque. In addition to the built-in depth meter and angle sensor, the pair of power generation units 4 and 4 has a built-in ballast tank for adjusting the depth during power generation in the sea. Accordingly, the connecting beam 5 is also arranged.

２本の係留索６，６は、各々の一端が連結ビーム５の両端部にそれぞれ接続されていると共に、各々の他端が海底Ｂに設置したシンカー７にそれぞれ接続されている。つまり、２本の係留索６，６は、連結ビーム５とともに逆三角形の隙間を形成するようにして張られており、２本の係留索６，６間には、発電部４，４からの送電ケーブル８が、ケーブル保持機構１０によって保持された状態で配置されている。   One end of each of the two mooring lines 6 and 6 is connected to both ends of the connecting beam 5, and the other end is connected to a sinker 7 installed on the seabed B. That is, the two mooring lines 6, 6 are stretched so as to form an inverted triangular gap together with the connecting beam 5, and between the two mooring lines 6, 6 from the power generation units 4, 4. The power transmission cable 8 is arranged in a state of being held by the cable holding mechanism 10.

この場合、ケーブル保持機構１０は、２本の係留索６，６間における送電ケーブル８の複数個所（図１（ａ）では５箇所）に配置されており、図１（ｂ）に示すように、２本の係留索６，６にそれぞれ装着された筒体１１，１１と、送電ケーブル８を摺動可能に保持する円筒形状を成すケーブル保持体１２と、筒体１１，１１及びケーブル保持体１２を連結するバー１３を具備している。   In this case, the cable holding mechanism 10 is arranged at a plurality of places (five places in FIG. 1A) of the power transmission cable 8 between the two mooring lines 6 and 6, as shown in FIG. Cylindrical bodies 11 and 11 mounted on the two mooring lines 6 and 6, respectively, a cylindrical cable holder 12 that slidably holds the power transmission cable 8, and the cylindrical bodies 11 and 11 and the cable holder. The bar 13 which connects 12 is provided.

この実施例において、筒体１１，１１にそれぞれ設けたフランジ１１ａ，１１ａ及びケーブル保持体１２に相反する向きに設けたフランジ１２ａ，１２ａに、ピン１４を介してバー１３の両端部をそれぞれ回動自在に連結することで、２本の係留索６，６から送電ケーブル８に掛かる負荷を減らすようにしている。   In this embodiment, the flanges 11a and 11a provided on the cylinders 11 and 11 and the flanges 12a and 12a provided in opposite directions to the cable holding body 12 are respectively rotated at both ends of the bar 13 via the pins 14. By freely connecting them, the load applied to the power transmission cable 8 from the two mooring lines 6 and 6 is reduced.

この海流発電装置１において、送電ケーブル８を海中ＵＳにおいて２本の係留索６，６間に設置するに際しては、図２（ａ）に示すように、ケーブル保持機構１０を２本の係留索６，６間における長さ方向の複数個所（図２では３箇所）に配置して、クレーン船Ｘ上のリール２１にコイルした送電ケーブル８に一端を繋げたメッセンジャーロープ２２を複数のケーブル保持機構１０の各ケーブル保持体１２に順次挿通して保持させる。   In this ocean current power generation apparatus 1, when the power transmission cable 8 is installed between the two mooring lines 6 and 6 in the sea US, the cable holding mechanism 10 is connected to the two mooring lines 6 as shown in FIG. , 6 are arranged at a plurality of locations in the length direction (three locations in FIG. 2), and a messenger rope 22 having one end connected to the power transmission cable 8 coiled on the reel 21 on the crane ship X is connected to the plurality of cable holding mechanisms 10. The cable holders 12 are sequentially inserted and held.

次いで、図２（ｂ）に示すように、複数のケーブル保持機構１０の各ケーブル保持体１２に送電ケーブル８が保持されるように、メッセンジャーロープ２２の装置本体２側に位置させた他端を引き上げて、巻き上げ船Ｙ上のリール２３でメッセンジャーロープ２２を巻き取る。   Next, as shown in FIG. 2B, the other end of the messenger rope 22 positioned on the device body 2 side is held so that the power transmission cable 8 is held by each cable holding body 12 of the plurality of cable holding mechanisms 10. Pull up and wind up the messenger rope 22 with the reel 23 on the winding ship Y.

これに先立って、クレーン船Ｘ上では、リール２１にコイルした送電ケーブル８と他のリール２４にコイルしたリジッドケーブル２５とがコネクタ２６を介して接続されており、上記の巻き上げ船Ｙによるメッセンジャーロープ２２の巻き取りに合わせて、クレーン船Ｘ上のクレーン２７からワイヤ２８を繰り出して、図２（ｂ）に仮想線で示すように、ワイヤ２８に吊り下げた送電ケーブル８とリジッドケーブル２５とのコネクタ２６を海底Ｂに設置する。   Prior to this, on the crane ship X, the power transmission cable 8 coiled on the reel 21 and the rigid cable 25 coiled on the other reel 24 are connected via the connector 26, and the messenger rope by the above-mentioned hoisting ship Y is connected. In accordance with the winding of the wire 22, the wire 28 is fed out from the crane 27 on the crane ship X, and the power transmission cable 8 and the rigid cable 25 suspended from the wire 28 are suspended as shown by the phantom line in FIG. The connector 26 is installed on the seabed B.

そして、メッセンジャーロープ２２の一端とともに手繰り寄せた送電ケーブル８の端部をメッセンジャーロープ２２から切り離すと共に、この切り離した送電ケーブル８の端部を浮上状態にある装置本体２の発電部４に接続すると、２本の係留索６，６間への送電ケーブル８の設置が完了することとなり、図２（ｃ）に示すように、この状態で、例えば、バラストタンクを操作して装置本体２を所望の深度まで沈降させて、白抜き矢印に示す海流による発電を開始する。   Then, while disconnecting the end of the power transmission cable 8 brought together with one end of the messenger rope 22 from the messenger rope 22, and connecting the end of the disconnected power transmission cable 8 to the power generation unit 4 of the apparatus main body 2 in a floating state, Installation of the power transmission cable 8 between the two mooring lines 6 and 6 is completed. As shown in FIG. 2 (c), in this state, for example, the ballast tank is operated and the apparatus main body 2 is set in a desired manner. Settling down to the depth, power generation by the ocean current indicated by the white arrow is started.

この実施例による海流発電装置１では、ケーブル保持機構１０が送電ケーブル８を２本の係留索６，６間で保持するので、２本の係留索６，６及び送電ケーブル８が一体化することとなる。   In the ocean current power generation device 1 according to this embodiment, since the cable holding mechanism 10 holds the power transmission cable 8 between the two mooring lines 6 and 6, the two mooring lines 6 and 6 and the power transmission cable 8 are integrated. It becomes.

したがって、装置本体２が、海流の状況に応じて海底Ｂのシンカー７を中心に移動したとしても、２本の係留索６，６及び送電ケーブル８が互いに干渉したり絡んだりすることが回避されることとなる。   Therefore, even if the apparatus main body 2 moves around the sinker 7 on the seabed B according to the state of the ocean current, the two mooring lines 6 and 6 and the power transmission cable 8 are prevented from interfering with each other. The Rukoto.

この際、例え２本の係留索６，６のうちの１本の係留索６が切れたとしても、ケーブル保持機構１０によって送電ケーブル８が残りの１本の係留索６に留まるので、送電ケーブル８が残りの１本の係留索６から離れて動作することが阻止されることとなる。
加えて、２本の係留索６，６及び送電ケーブル８が一体化しているので、係留索６及び送電ケーブル８の保守管理の作業性が向上することとなる。 At this time, even if one of the two mooring lines 6 and 6 is cut, the cable holding mechanism 10 causes the power transmission cable 8 to remain on the remaining one mooring line 6. 8 is prevented from moving away from the remaining one mooring line 6.
In addition, since the two mooring lines 6 and 6 and the power transmission cable 8 are integrated, the workability of maintenance management of the mooring lines 6 and the power transmission cable 8 is improved.

また、この実施例による海流発電装置１では、ケーブル保持体１２を具備したケーブル保持機構１０を２本の係留索６，６間において複数個所に配置しているので、２本の係留索６，６及び送電ケーブル８が強固に一体化することとなり、２本の係留索６，６及び送電ケーブル８が互いに干渉したり絡んだりする虞がほとんど皆無となる。   Further, in the ocean current power generation apparatus 1 according to this embodiment, the cable holding mechanism 10 having the cable holding body 12 is arranged at a plurality of positions between the two mooring lines 6, 6. 6 and the power transmission cable 8 are firmly integrated, and there is almost no possibility that the two mooring lines 6 and 6 and the power transmission cable 8 interfere with each other or get entangled.

そして、上記した送電ケーブル設置方法では、送電ケーブル８を２本の係留索６，６間に保持させて両者を一体化する作業が容易に成されることとなる。   And in the above-mentioned power transmission cable installation method, the operation | work which hold | maintains the power transmission cable 8 between the two mooring lines 6 and 6, and integrates both will be done easily.

図３は本発明に係る海流発電装置の他の実施例を示している。
この海流発電装置が、先の実施例による海流発電装置１と相違するところは、図３に部分的に示すように、ケーブル保持機構１０Ａのケーブル保持体１２Ａが、海流を受けて生じる抵抗力を装置本体２に対して深度を増す方向の力として係留索６，６を介して伝える抵抗板（抵抗体）１６，１６を具備している点にある。 FIG. 3 shows another embodiment of the ocean current power generation apparatus according to the present invention.
This ocean current power generation device is different from the ocean current power generation device 1 according to the previous embodiment in that the cable holding body 12A of the cable holding mechanism 10A has the resistance generated by receiving the ocean current, as partially shown in FIG. This is in that resistance plates (resistors) 16 and 16 transmitted through the mooring lines 6 and 6 as a force in the direction of increasing the depth to the apparatus main body 2 are provided.

この場合、抵抗板１６，１６は、円筒形状を成すケーブル保持体１２Ａの外周面に沿って配置され、ケーブル保持体１２Ａの軸方向の支持ピン１５，１５により支持されている。これらの抵抗板１６，１６において、例えば、バラストタンクを操作して装置本体２を所望の深度まで沈降させる際には、抵抗板１６，１６が支持ピン１５，１５を軸として左右両側に対称的に開く、いわゆる観音開き状態となることで生じる抵抗力を装置本体２に係留索６，６を介して伝えるようになっており、沈降動作の一助となる分だけ、発電コストの低減が図られることとなる。   In this case, the resistance plates 16 and 16 are arranged along the outer peripheral surface of the cable holding body 12A having a cylindrical shape, and are supported by the axial support pins 15 and 15 of the cable holding body 12A. In these resistance plates 16 and 16, for example, when the ballast tank is operated and the apparatus main body 2 is settled to a desired depth, the resistance plates 16 and 16 are symmetrical on the left and right sides with the support pins 15 and 15 as axes. The resistance generated by the so-called double door opening state is transmitted to the device body 2 via the mooring lines 6 and 6, and the power generation cost can be reduced by the amount that helps the settling operation. It becomes.

本発明に係る海流発電装置及び海流発電装置の送電ケーブル設置方法の構成は、上記した実施例に限定されるものではなく、例えば、ケーブル保持機構１０，１０Ａの個数やケーブル保持体１２，１２Ａの形状は適宜変更可能である。   The configuration of the ocean current power generation device and the power transmission cable installation method for the ocean current power generation device according to the present invention is not limited to the above-described embodiments. For example, the number of cable holding mechanisms 10 and 10A and the number of cable holding bodies 12 and 12A The shape can be changed as appropriate.

１ 海流発電装置
３ タービン
４ 発電部
６ 係留索
８ 送電ケーブル
１０，１０Ａ ケーブル保持機構
１２ ケーブル保持体（ケーブル保持機構）
１６ 抵抗板（抵抗体）
２２ メッセンジャーロープ
Ｂ 海底 DESCRIPTION OF SYMBOLS 1 Ocean current power generation device 3 Turbine 4 Power generation part 6 Mooring line 8 Transmission cable 10, 10A Cable holding mechanism 12 Cable holding body (cable holding mechanism)
16 Resistance plate (resistor)
22 Messenger Rope B

Claims (4)

海流によるタービンの回転により発電する発電部と、
前記発電部で発電した電力を送る送電ケーブルと、
前記発電部を海底に係留する２本の係留索を備えた海流発電装置において、
前記送電ケーブルを前記２本の係留索間で保持するケーブル保持機構が備えられていることを特徴とする海流発電装置。 A power generation unit that generates power by rotating a turbine by an ocean current;
A power transmission cable for sending power generated by the power generation unit;
In the ocean current power generation apparatus provided with two mooring lines mooring the power generation section on the seabed,
An ocean current power generation apparatus comprising a cable holding mechanism for holding the power transmission cable between the two mooring lines. 前記ケーブル保持機構は、前記２本の係留索の双方に連結された状態で前記送電ケーブルを摺動可能に保持するケーブル保持体を具備し、前記２本の係留索間における前記送電ケーブルの複数個所に配置されている請求項１に記載の海流発電装置。   The cable holding mechanism includes a cable holding body that slidably holds the power transmission cable in a state of being connected to both of the two mooring lines, and a plurality of the power transmission cables between the two mooring lines. The ocean current power generation device according to claim 1, which is disposed at a location. 前記ケーブル保持機構は、海流を受けて生じる抵抗力を前記発電部に対して深度を増す方向の力として前記係留索を介して伝える抵抗体を具備している請求項１又は２に記載の海流発電装置。   3. The ocean current according to claim 1, wherein the cable holding mechanism includes a resistor that transmits a resistance force generated by the ocean current through the mooring line as a force in a direction of increasing a depth to the power generation unit. Power generation device. 海流によるタービンの回転により発電する発電部と、前記発電部で発電した電力を送る送電ケーブルと、前記発電部を海底に係留する２本の係留索を備えた海流発電装置の前記送電ケーブルの設置方法であって、
前記２本の係留索の双方に連結された状態で前記送電ケーブルを摺動可能に保持するケーブル保持体を具備したケーブル保持機構を該２本の係留索間における長さ方向の複数個所に配置して、一端を前記送電ケーブルに繋げたメッセンジャーロープを前記複数のケーブル保持機構の各ケーブル保持体に保持させ、
前記複数のケーブル保持機構の各ケーブル保持体に前記送電ケーブルを保持させるべく、前記メッセンジャーロープの前記発電部側に位置させた他端を引き上げて該メッセンジャーロープを巻き取り、
前記メッセンジャーロープの一端とともに手繰り寄せた前記送電ケーブルの端部を前記発電部に接続する
ことを特徴とする海流発電装置の送電ケーブル設置方法。 Installation of the power transmission cable of the ocean current power generation apparatus provided with a power generation unit that generates power by rotating a turbine by an ocean current, a power transmission cable that transmits power generated by the power generation unit, and two mooring lines that moor the power generation unit on the sea floor A method,
A cable holding mechanism having a cable holding body that slidably holds the power transmission cable while being connected to both of the two mooring lines is arranged at a plurality of positions in the length direction between the two mooring lines. Then, a messenger rope having one end connected to the power transmission cable is held on each cable holding body of the plurality of cable holding mechanisms,
In order to hold the power transmission cable in each cable holding body of the plurality of cable holding mechanisms, the other end of the messenger rope positioned on the power generation unit side is pulled up to wind up the messenger rope,
A power transmission cable installation method for an ocean current power generation apparatus, wherein an end portion of the power transmission cable brought together with one end of the messenger rope is connected to the power generation unit.
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