EP3278412A1 - Ensemble de transfert d'énergie électrique - Google Patents

Ensemble de transfert d'énergie électrique

Info

Publication number
EP3278412A1
EP3278412A1 EP15726580.2A EP15726580A EP3278412A1 EP 3278412 A1 EP3278412 A1 EP 3278412A1 EP 15726580 A EP15726580 A EP 15726580A EP 3278412 A1 EP3278412 A1 EP 3278412A1
Authority
EP
European Patent Office
Prior art keywords
water
arrangement according
electrical device
arrangement
depth
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
EP15726580.2A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Knaak
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP3278412A1 publication Critical patent/EP3278412A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/14—Laying or reclaiming pipes on or under water between the surface and the bottom

Definitions

  • the invention relates to an arrangement for the transmission of electrical energy with an electrical device which is arranged in a body of water.
  • offshore structures In offshore waters, for example, on a sea, offshore structures are increasingly being installed.
  • An example of such an offshore structure is an offshore wind turbine, an oil rig, a transformer platform, or a platform for another offshore facility.
  • offshore buildings can be
  • Such electrical devices may, for example, a power converter or a
  • the invention has for its object to provide an arrangement with an electrical device, the simple and cost can be realized in an offshore construction.
  • the arrangement can be designed so that the device is arranged free of ground contact.
  • the electrical device floats or floats in the water and does not touch the bottom of the water (and not the surface of the water). This will not make the device may be damaged or mechanically stressed by any rocks or sharp-edged structures present on the bottom of the watercourse.
  • the arrangement may be configured so that the device is arranged floating. The device can therefore swim between the bottom of the water and the surface of the water.
  • the arrangement may be such that the device (below the surface of the body of water) is located at a depth that is at least L / 4, where L is the mean length of waves appearing on the water. The depth is therefore at least 25% of L, where L is the mean wavelength (typical wavelength) of the
  • Deep water is water in which the total water depth is greater than half the wavelength (L / 2). If single big waves with a larger wavelength than the middle one
  • Wavelength L occur, this is not a problem. It is not necessary to avoid any undue stress on the device due to waves. Rather, it is
  • the mean stress of the device can be kept low, so that the life of the device
  • the arrangement can also be designed so that the
  • L is the mean wavelength of occurring on the water
  • the electrical device is arranged at a depth which corresponds to at least half the wavelength of waves occurring on the water, then the water particles are only very slightly moved by the waves in this depth. For example, cases occur where at a depth of L / 2, the movement of the water particles is only about 5% based on the movement of the water particles on the surface of the water.
  • the arranged at a depth of at least L / 2 electrical device is therefore only very slightly moved by the waves and is thus exposed to only a very small mechanical load by the wave movements. This applies in particular to deep water. This contributes to the fact that the electrical device can be produced in a particularly cost-effective manner, because a particularly robust mechanical design can be dispensed with.
  • the arrangement can also be designed so that the
  • a depth of at least 48 meters is particularly advantageous because the electric
  • the arrangement can also be designed so that the
  • Device is arranged at a depth that is maximum
  • the electrical device can thus be arranged for example at a depth which is between 48 and 1000 meters.
  • a depth of a maximum of 1000 meters has been found to be advantageous because at depths greater than 1000 meters of effort for the
  • the arrangement can also be designed so that the
  • the electrical device is held by means of at least one attached to the bottom of the water rope below the surface of the body of water.
  • the electrical device has an average density which is lower than the density of water. This density can be determined by an appropriate choice of material and / or by an appropriate amount of one in the
  • the arrangement can be designed so that the device is associated with at least one buoyant body.
  • this buoyant body can be achieved advantageously that the electrical device floats in the water and does not sink to the bottom of the water.
  • Buoyancy is used to generate a buoyancy force to keep the electrical device groundless. It can also be used a plurality of buoyancy bodies to keep the electrical device groundless.
  • the buoyant body may also be referred to as a floating body.
  • the buoyancy body can be on or
  • the arrangement can also be designed so that the
  • Means is associated with at least one pump for pumping a fluid, and the pump is connected by means of a fluid line to the buoyant body.
  • a fluid in particular a gas
  • the buoyant body be pumped.
  • water is forced out of the buoyant body, whereby the buoyant body can be positioned at different depths of the water body (similar to a submarine).
  • the arrangement can be designed such that the
  • the electrical device can hang on such a buoyant body floating on the surface of the water, so that the device does not sink to the bottom of the water body.
  • the arrangement may also be designed such that the electrical device is rigid with the buoyant body
  • Electrical device with the buoyancy ensures that the electrical device is always in a defined position / position with respect to the buoyant body.
  • the arrangement can also be designed so that the
  • Platform is connected.
  • the electrical device and the platform advantageously a
  • the platform has a portion located above the surface of the body of water.
  • Such a semi-submersible has the advantage that its center of gravity is very low and that the semi-submerser is therefore calm in the water even in wind and waves.
  • the arrangement can also be designed so that the
  • the Device is connected by means of a hollow connecting element with the surface of the body of water.
  • a hollow Connecting element can advantageously be achieved accessibility to the electrical device from above the water surface.
  • the connecting element can advantageously also serve as an antenna in order to communicate by radio with the electrical device.
  • the arrangement can also be designed so that the
  • Suspension has the advantage that the electrical device even with short-term movements / wave movements of the
  • the arrangement can also be designed so that the
  • Device has a waterproof housing, which is in direct contact with the water.
  • the arrangement can also be designed such that the device is installed in a frame, which is of the
  • Components can be realized easily and inexpensively, for example via cables or pipes.
  • the frame ensures that the electrical device is mechanical
  • the arrangement may be designed so that the device comprises a power converter and / or a transformer.
  • the arrangement can be designed so that the device by means of a first cable electrically with a
  • the arrangement can also be designed such that the device by means of the second cable electrically with a arranged on the bank of the water body inverter
  • the method described enables a cost-effective and secure transmission of electrical energy between the offshore structure and the shore of the water body (in both
  • An offshore structure is a permanent structure built in the open sea (off the coast).
  • An example of an offshore structure is an oil rig, a wind turbine or a transformer platform.
  • Figure 1 shows an embodiment of an arrangement with a arranged in a body of water
  • Figure 2 shows another embodiment of a
  • Figure 3 shows another embodiment of a
  • Figure 4 shows an embodiment of an arrangement with a on the surface of the water body
  • Figure 5 shows an embodiment of an arrangement with a rigid connection between the
  • Figure 6 shows an embodiment of an arrangement with a hollow connecting element
  • FIG. 7 shows an exemplary embodiment of an arrangement with a platform arranged above the surface of the water body
  • Figure 9 shows an embodiment of an arrangement in which the electrical device is held by means of a rope at the bottom of the water and in
  • the electrical device 3 consists in the embodiment of two
  • the electrical device 3 is in one
  • the electrical device 3 is by means of a first
  • An offshore building is a fixed one
  • the offshore structure 18 is configured in the embodiment as a wind turbine 18.
  • the wind turbine 18 is anchored or fixed by means of a schematically illustrated pile 21 in the bottom 7 of the body of water 5.
  • the wind turbine 18 has a generator 24, which AC
  • the alternating current is transmitted to the electrical device 3 via the first cable 15.
  • the electrical device 3 a transformer 205 and a power converter 208, see Figure 2.
  • Diode rectifier is configured) in DC
  • the high-voltage direct current is connected by means of a second electric cable 27 to the shore 11 of the
  • the second cable 27 is electrically connected to the shore 11 with an inverter 30.
  • This inverter 30 converts the high voltage direct current into high voltage alternating current, which then continues on land
  • the electrical device 3 is arranged below the surface 9 of the water body and above the bottom 7 of the water body 5. In this case, the electrical device 3 is located at a depth 33 below the surface of the water body. It is advantageous that in the depth 33 of the water, the water pressure (hydrostatic pressure) is lower than at the bottom 7 of the water. Furthermore, it is advantageous that due to the arrangement above the bottom of the water body, a contact between the electrical device 3 and the bottom 7 of the water is avoided. This allows the electrical
  • the Electrical Device is arranged in a water depth, in which only small wave movements are recorded.
  • the electrical device 3 is groundless and floating in the depth 33 below the surface 9 of the body of water 5.
  • This depth 33 is advantageously chosen so that it has a certain relationship to the wavelength of waves occurring on the water
  • FIG. 2 shows an embodiment in which on the
  • Water surface 9 schematically a shaft 202 is shown.
  • the shaft 202 has a wavelength L. in the
  • Embodiment of Figure 2 is the electrical
  • Device 3 is arranged at a depth 33, wherein the depth 33 is greater than a quarter of the wavelength of the shaft 202 (ie greater than L / 4). In such a depth 33 larger or equal to L / 4, the movement of the water particles through the shaft 202 has already decreased greatly, so that the electrical device 3 is only slightly moved by the shaft 202. Thus, only a small mechanical load of the electrical device 3 through the shaft 202 occurs.
  • the electrical device 3 has a transformer 205 and a power converter 208 in the form of a rectifier 208.
  • the electrical device 3 has a watertight housing 211. This housing 211 is in direct contact with the water 5 and protects the transformer 205 and the power converter 208 from contact with the water.
  • FIG. 3 shows an exemplary embodiment in which the electrical device 3 is arranged at a depth 33 that is at least L / 2.
  • L is the mean wavelength of waves 302 occurring on the water.
  • the electrical device 3 is arranged at a depth 33 which is at least 48 meters.
  • the electrical device 3 does not obstruct shipping, because today's ships have a maximum draft of about 24m.
  • the electrical device 3 is advantageously arranged at a depth of at most 1000 m. At a maximum depth of 1000m the occurring water pressure is at
  • FIG. 4 shows a further arrangement with the electrical device 3.
  • the electrical device 3 is by means of a rope 403 on a buoyancy body 406th
  • the cable 403 may be an elastic cable 403.
  • Embodiment may be sufficient even a single rope with a single buoyant body to keep the electrical device 3 above the bottom of the water (free of ground contact).
  • the electrical device 3 is gimballed to the cable 403, so that the electrical device 3 maintains its original position even when shaft movements. For this purpose is between the rope 403 and the
  • the electrical device 3 a gimbal 409 arranged.
  • the gimbal 409 has two
  • Cardanic suspensions as such are well known, so that a detailed description can be omitted here.
  • FIG. 5 shows an embodiment of an arrangement is shown in which the electrical device 3 rigid with two buoyant bodies 406 is connected.
  • 406 rigid struts 502 struts 502 are arranged between the electrical device 3 and the buoyancy bodies, which realize a rigid connection between the electrical device 3 and the buoyancy bodies 406.
  • 406 is a rigid between the two buoyancy bodies
  • the Brace 504 arranged.
  • the struts 502 are washed by the water.
  • Struts 502 are passages that allow the water to flow through the water unhindered. Thus, the electrical device is little or not moved by currents of the water.
  • FIG. 6 shows an exemplary embodiment of an arrangement in which the electrical device 3 is connected to the surface 9 of the body 5 by means of a hollow connecting element 603.
  • Connecting element 603 is a permanent accessibility to the electrical device 3 (from above the
  • the hollow connector 603 may also be an antenna for wireless telecommunications.
  • the electrical device 3 is connected by means of a hollow connecting element 703 with a platform 706 arranged above the surface 9 of the water body.
  • Embodiment the electrical device even by means of two hollow connecting elements 703 with the
  • Platform 706 connected; In another embodiment, however, a hollow connecting element 703 would already be sufficient.
  • a heliport 709, a docking facility 712 for ships and / or a recreation room 715 for service personnel are arranged. From the platform 706 is through the hollow
  • Connecting element 703 an access to the electrical
  • the hollow connecting element 703 allows not only permanent access but also ventilation of the electrical
  • the electrical device 3 has a greater weight than the platform 706. As a result, the majority of the total weight is below the water surface 9, so that the center of gravity of the arrangement is low, in particular below the
  • the arrangement of Figure 5 or 7 may also be referred to as a semi-submersible.
  • This arrangement has a large-volume component below the water surface and a small-volume component above the water surface. Between the large-volume component and the small-volume component, there are one or more thin connecting parts, whereby the arrangement is insensitive to waves.
  • the weight of the large-volume component aligns the arrangement vertically in the water. By appropriate selection of masses and centers of gravity is achieved that the arrangement floats with a given draft.
  • FIG. 8 shows a further exemplary embodiment in which the electrical device 3 is held in a floating manner between the bottom and the surface of the body 9 by means of at least one buoyant body 803.
  • Buoyancy body 803 is connected by a fluid line 806 to a pump 809 (fluid pump 809).
  • the pump 809 serves a fluid (for example, a gas) in the
  • This swimming level adjustment (swimming depth adjustment) is similar to a submarine.
  • the buoyancy bodies 406 and 803 serve to generate a buoyancy force to the electrical device. 3
  • FIG. 9 shows a further exemplary embodiment in which the electrical device 3 is held below the surface 9 of the body by means of one or more cables 902. One end of the cable 902 is connected to the electrical device 3, the other end of the cable 902 is attached (for example by means of an anchorage 904 or by means of a weight) to the bottom 7 of the body of water. Such holding the electrical device 3 means
  • buoyant body 906 is in particular
  • the electrical device 3 can fully emerge, d. H. completely over the surface 9 of the water body 5 can be brought. This is for example advantageous if the corrosion protection of the housing of the electrical
  • FIG. 10 shows an exemplary embodiment in which the electrical device 3 is installed in a frame 1003.
  • the frame 1003 is flushed by the body of water 5, i. H. the body of water 5 can flow between the electrical device 3 and the elements of the frame 1003.
  • the frame 1003 ensures that the components of the electrical device have a fixed and defined distance from one another.
  • the retractable frame 1003 thus provides a defined arrangement of
  • the electrical device 3 can be brought to the surface of the water, if necessary, for example
  • the electrical device 3 appears on the surface 9 of the body of water 5. This can be the case for example
  • Embodiment of Figure 4 take place in that the electrical device 3 by means of the cable 403 for
  • the electrical device 3 is caused to rise to the surface 9 of the body by means of the cable 902.
  • the cable 902 is longer than can be seen in FIG. 9 and, for example, rolled up on a roll, from which it can be unrolled if necessary.
  • the housing or the electrical device may be filled with a gas, for example with air, an anti-corrosive gas or an electrically insulating gas such as nitrogen.
  • the housing can also act as a bell-shaped housing
  • This bell-shaped housing may be open at the bottom or closed at the bottom by a flexible membrane. Inside the bell-shaped housing is a gas bubble
  • Cable bushings are necessary to lead electrical lines to the electrical device 3. At this point
  • Embodiment of the housing is formed (by the lower
  • the wall of the bell-shaped housing can be made thin-walled and thus cost-effective.
  • a housing which is closed (similar to a bell) at the top and on the side surfaces, at the bottom, however, is open or at the
  • the electrical device 3 can in particular a
  • Converter for example, a diode rectifier or a converter
  • the electrical device may also have other components, such as a switchgear, cables, a choke, a capacitor or at least one electrical filter.
  • the electrical device is used for transmission, and in particular for forming, of electrical energy.
  • the described arrangements may be used to implement a high voltage DC transmission between the offshore structure 18 and the shore 11.
  • the second cable 27 may be a high voltage cable, in particular a high voltage direct current cable.
  • the arrangements described form, for example, a
  • High voltage transmission device in particular a high voltage direct current transmission device.
  • electrical energy can be transmitted.

Landscapes

  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

L'invention concerne un ensemble (1) de transfert d'énergie électrique comprenant un appareillage électrique (3) qui est placé en dessous de la surface (9) d'une étendue d'eau (5) et au-dessus du fond (7) de l'étendue d'eau.
EP15726580.2A 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique Ceased EP3278412A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/061875 WO2016188585A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique

Publications (1)

Publication Number Publication Date
EP3278412A1 true EP3278412A1 (fr) 2018-02-07

Family

ID=53276863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15726580.2A Ceased EP3278412A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique

Country Status (2)

Country Link
EP (1) EP3278412A1 (fr)
WO (1) WO2016188585A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060062635A1 (en) * 2004-09-21 2006-03-23 Kellogg Brown And Root, Inc. Concentrated buoyancy subsea pipeline apparatus and method
WO2010051872A1 (fr) * 2008-11-04 2010-05-14 Rolls-Royce Plc Connexions électriques à une embarcation
FR2984396A1 (fr) * 2011-12-19 2013-06-21 Total Sa Installation de transfert de fluides entre une tete de puits au fond de l'eau et une structure de surface

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7602577A (nl) * 1975-03-20 1976-09-22 Richard Francisco Arnold Werkwijze en inrichting voor het onder het zee- oppervlak leggen van elektrische kabels of pijp- leidingen.
IT1048460B (it) * 1975-08-19 1980-11-20 Francisco A Conduttore sottomarino migliorato per la trasmissione di energia elettrica ad alta tensione in mare profondo
US4110994A (en) * 1976-01-26 1978-09-05 Poseidon Marketing And Development Co. Marine pipeline
JPH01274608A (ja) * 1988-04-26 1989-11-02 Nec Corp 海底ケーブル保持方法
US6239363B1 (en) * 1995-09-29 2001-05-29 Marine Innovations, L.L.C. Variable buoyancy cable
WO2013087948A1 (fr) * 2011-12-12 2013-06-20 Fundacion Tecnalia Research & Innovation Système et procédé d'interconnexion d'ombilicaux pour la transmission d'énergie, de fluides et/ou de données en environnement marin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060062635A1 (en) * 2004-09-21 2006-03-23 Kellogg Brown And Root, Inc. Concentrated buoyancy subsea pipeline apparatus and method
WO2010051872A1 (fr) * 2008-11-04 2010-05-14 Rolls-Royce Plc Connexions électriques à une embarcation
FR2984396A1 (fr) * 2011-12-19 2013-06-21 Total Sa Installation de transfert de fluides entre une tete de puits au fond de l'eau et une structure de surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016188585A1 *

Also Published As

Publication number Publication date
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