WO2016188584A1 - Ensemble de transfert d'énergie électrique - Google Patents

Ensemble de transfert d'énergie électrique Download PDF

Info

Publication number
WO2016188584A1
WO2016188584A1 PCT/EP2015/061870 EP2015061870W WO2016188584A1 WO 2016188584 A1 WO2016188584 A1 WO 2016188584A1 EP 2015061870 W EP2015061870 W EP 2015061870W WO 2016188584 A1 WO2016188584 A1 WO 2016188584A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
water
arrangement according
cable section
arrangement
Prior art date
Application number
PCT/EP2015/061870
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Knaak
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2015/061870 priority Critical patent/WO2016188584A1/fr
Priority to EP15728786.3A priority patent/EP3278414A1/fr
Publication of WO2016188584A1 publication Critical patent/WO2016188584A1/fr

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

Definitions

  • the invention relates to an arrangement for transmitting electrical energy with an electrical cable.
  • electrical energy can be transmitted over long distances. It may be necessary, at least partially, for electrical cables in a body of water
  • the invention has for its object to provide an arrangement with which electrical energy can be transmitted inexpensively through water.
  • an electrical cable having at least one cable section which is arranged below a surface of a body of water and which is arranged above the bottom of the water body.
  • the electrical cable has one or more cable sections, although below the surface, but above the bottom of the
  • this cable section is exposed to a lower water pressure than a cable section located at the bottom of the water is arranged. Therefore, this cable section can be designed to be less pressure-resistant, which can be produced cheaper this cable section. In other words, the at least one cable section is free of ground contact.
  • the arrangement may be such that the sum of the lengths of the cable sections is at least 80% of that in the
  • Variant of the arrangement may run less than 20% of the running in the water cable length at the bottom of the water. This is particularly beneficial for waters that have very shallow areas (for example, mudflats in the North Sea). In such shallow water areas, the cable may well be deposited on the bottom of the water. This is not a problem in terms of the required compressive strength of the cable, since only very low water pressures occur at very shallow depths.
  • the arrangement can also be designed so that the running in the water cable length is at least 5 km.
  • the arrangement can be designed such that the
  • Cable section extends substantially horizontally. Due to the substantially horizontal course of the cable section is achieved that at all points of the cable section in
  • Cable section are dimensioned to this intended water pressure out, so that the cable section on the one hand easily withstands the intended water pressure, however on the other hand, an unnecessary (pressure-related)
  • the arrangement may in particular be designed such that the cable section (below the surface of the body of water) is arranged at a depth that is at least L / 4.
  • the depth is therefore at least 25% of L.
  • L is the mean wavelength (typical wavelength) of on the
  • Deep water is water in which the total water depth is greater than half the wavelength L. If single large waves with a longer wavelength than the average wavelength L occur, this is not a problem. It goes with the
  • the arrangement can also be designed such that the cable section (below the surface of the
  • L is the mean wavelength of waves appearing on the water. If the cable section (s) are arranged at a depth that is at least half the wavelength of waves appearing on the waterway, then the
  • the arrangement can also be designed so that the
  • Cable section (below the surface of the water body) is arranged at a depth which is at least 48 meters.
  • a depth of at least 48 meters is particularly advantageous for the arrangement of the cable sections, because the
  • the arrangement can be designed such that the
  • Cable section (below the surface of the water) is located at a depth that is a maximum of 1000 meters.
  • the cable section can therefore be arranged, for example, at a depth which is between 48 and 1000 meters.
  • a depth of a maximum of 1000 meters has proven to be advantageous because at depths greater than 1000 meters, the cost of upgrading the cable for the water pressures occurring at such depths increases sharply.
  • the arrangement can be designed such that the
  • Cable section has a density that is less than the density of water. This density can be achieved by an appropriate choice of material of the cable section.
  • the arrangement can also be designed so that the
  • Cable section is assigned at least one buoyant body.
  • this buoyant body can be advantageously achieved that the cable section floats in the water and does not sink to the bottom of the water.
  • the buoyant body serves to generate a buoyancy force in order to keep the or the cable sections groundless.
  • buoyancy bodies are used to keep the cable portion groundless.
  • Buoyancy can also be referred to as a floating body.
  • the buoyancy body or float can float on the surface of the water body or below the surface of the water body.
  • the arrangement can also be designed so that the
  • Floating buoyant body can hang a cable section, so that the cable section does not sink to the bottom of the water. Often, the cable section depends on a plurality of such buoyant bodies.
  • the arrangement can also be designed so that the
  • Cable section 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
  • a fluid line to the buoyant body.
  • a fluid in particular a gas
  • water is forced out of the buoyant body, whereby the buoyant body in different Depths of the water can be positioned (similar to a submarine).
  • the arrangement may be configured such that the cable is a high voltage cable, in particular a high voltage DC cable.
  • the arrangement is special
  • the arrangement may also be configured such that a first end of the cable is electrically connected to a rectifier and a second end of the cable is electrically connected to an inverter.
  • HVDC high-voltage direct current
  • the high-voltage transmission device may in particular be a high-voltage DC transmission device. Also disclosed is a method of transmitting
  • electrical energy in which the electrical energy is transmitted by means of an arrangement according to the variants described above.
  • electrical energy in which the electrical energy is transmitted by means of an arrangement according to the variants described above.
  • 1 is an embodiment of a in a
  • Figure 6 shows an embodiment of an arrangement in which the electrical cable is provided with buoyancy bodies, and in
  • Figure 7 shows an embodiment of an arrangement in which the electrical cable is fixed by means of cables at the bottom of the water.
  • Cable 3 is arranged in a body of water 5. Recognizable is the bottom 7 of the water body 5 and the surface 9 of the water body 5 (water surface 9) and a first bank 11 of the water body and a second bank 13 of the water body.
  • the electrical cable 3 extends from the first bank 11, starting through the water 5 to the second bank 13. Only in the area of the first bank and the second bank of the cable 3 touches the bottom of
  • a first cable section 3 a extends in the first bank 11 to
  • a second cable section 3b extends below the surface 9 of the water body and above the bottom 7 of the water body (in the direction of the second bank 13).
  • a third cable section 3c extends in the second bank 13.
  • the second cable section 3b is free of ground contact, i. he does not touch the bottom 7 of the waters 5.
  • Cable section 3b is substantially horizontal, i. it runs horizontally. Therefore, the cable portion 3b is arranged substantially at a constant depth (below the surface 9 of the water).
  • the water pressure (hydrostatic pressure) is lower than at the bottom 7 of the water. Furthermore, it is advantageous that when laying the cable above the
  • Reason of the water body may be a contact between the cable and possibly at the bottom of the water body
  • Essentially horizontal arrangement of the cable in the water (that is, a "floating" arrangement of the cable in the water, so to speak) can be the electrical connection with a minimum length of the cable section 3b realize.
  • Water body 5 is arranged.
  • the cable 3 may also have a plurality of cable sections, which are arranged below the surface 9 and above the bottom 7 of the body of water 5.
  • FIG. 2 shows a further exemplary embodiment in which a wind power plant 202 on the body of water 5
  • the wind turbine 202 is anchored by means of a schematically illustrated pile 204 in the bottom 7 of the body of water 5.
  • the wind turbine 202 has a generator which generates alternating current.
  • the alternating current is raised to a high voltage level by means of a transformer
  • the resulting high-voltage direct current is arranged via the cable 3 to one on the second bank 13
  • Inverter 208 transmitted. Similar to the
  • Cable section 3b which extends below the surface 9 of the water body and above the bottom 7 of the water body. This cable section 3b is ground free and runs substantially horizontally.
  • High-voltage direct current (HVDC) transmission realized by means of which the power generated by the wind turbine 202 can be transmitted to the second bank 13 with low loss.
  • the running in the waters 5 cable length of the cable 3 is 5km in this embodiment, in others
  • this cable length can also be up to several hundred kilometers.
  • the length of the second cable section 3b essentially corresponds to that in FIG.
  • Cable section 3b but also be significantly shorter than the total running in the water cable length. This is the case, for example, when the second bank 13 of the Water body runs very flat (for example, a watts is available) and the cable 3 rests in the region of the second bank 13 in appreciable length on the bottom of the shallow shore. It is advantageous if the cable sections extending horizontally and above the ground have, in total, a total length which corresponds to at least 80% of the cable length running in the water.
  • FIG. 3 shows an exemplary embodiment in which a wave 302 is shown schematically on the water surface 9.
  • the shaft 302 has the wavelength L. in the
  • FIG. 4 shows an exemplary embodiment in which the second cable section 3b extends at a depth
  • L is the mean length of on the water
  • the cable portion 3b is at a depth
  • the cable section 3b does not interfere with shipping because today's ships have a maximum draft of about 24m
  • FIG. 5 shows another arrangement with the cable 3
  • the second cable section 3b is attached by means of cables 502 to buoyancy bodies 504, which are designed as floating bodies 504. Thus, it is prevented that the second cable section 3b drops to the bottom 7 of the water. Because the ropes 502 are all substantially the same length
  • the floating body 504 indicate the course of the second cable section 3b in the water, so that, for example, skipper on the
  • Buoyant body be sufficient to the second
  • the second cable section 3b can be gimballed to the buoyancy bodies, so that the second cable section 3b, even with shaft movements its original position
  • buoyant bodies can also be like one
  • the buoyancy bodies can a large volume below the water surface and a smaller volume above the water surface exhibit. Between the two volumes, one or more small volume fasteners are arranged. Such a half-diver is insensitive to wave motion.
  • Laying a cable by means of buoyancy bodies floating beneath the surface of the water body is, for example, advantageously applicable in the Mediterranean.
  • the electrical cable with the buoyant bodies would then sink to a certain depth, where an equilibrium of forces between the weight and the buoyancy force develops.
  • FIG. 6 shows a further exemplary embodiment in which the second cable section 3b, by means of at least one buoyant body 602, floats between the bottom of the
  • the buoyancy bodies 602 are each connected to a pump 606 by means of a fluid line 604.
  • the pump 606 serves a fluid (for example, a gas) in the respective
  • buoyancy bodies 504 and 602 serve for
  • FIG. 7 shows a further exemplary embodiment in which the second cable section 3b is held below the surface 9 of the body by means of one or more cables 702. One end of the cable 702 is connected to the Cable section 3b connected, the other end of the cable 702 is attached (for example by means of an anchor 704) to the bottom 7 of the water. Such a hold of the
  • Cable section 3b by means of at least one rope
  • At least one anchoring (or weight) at the bottom 7 can be used, for example, for the laying of the cable in the (relatively shallow) North Sea.
  • High voltage cables in particular a high voltage
  • the arrangements described form, for example, a high-voltage transmission device, in particular a high-voltage DC transmission device.
  • electrical energy can be transmitted. It can the
  • an electrical cable has one or more cable sections, which are arranged both below the surface of the water body and above the bottom of the water body.

Abstract

L'invention concerne un ensemble (1) de transfert d'énergie électrique comprenant un câble électrique (3) dont au moins un tronçon de câble (3b) est placé en dessous d'une surface (9) d'une étendue d'eau (5) et au-dessus du fond (7) de l'étendue d'eau (5).
PCT/EP2015/061870 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique WO2016188584A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2015/061870 WO2016188584A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique
EP15728786.3A EP3278414A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/061870 WO2016188584A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique

Publications (1)

Publication Number Publication Date
WO2016188584A1 true WO2016188584A1 (fr) 2016-12-01

Family

ID=53396455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/061870 WO2016188584A1 (fr) 2015-05-28 2015-05-28 Ensemble de transfert d'énergie électrique

Country Status (2)

Country Link
EP (1) EP3278414A1 (fr)
WO (1) WO2016188584A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610799A1 (de) * 1975-03-20 1976-10-07 Francisco Arnold Richard Vorrichtung und verfahren zur herstellung und zum verlegen von unterwasserleitungen
US4110994A (en) * 1976-01-26 1978-09-05 Poseidon Marketing And Development Co. Marine pipeline
US4132084A (en) * 1975-08-19 1979-01-02 Francisco Arnold Richard D Submarine conductor for the deep sea transmission of high voltage electrical power
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
EP2793333A1 (fr) * 2011-12-12 2014-10-22 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001503192A (ja) * 1996-10-28 2001-03-06 エービービー パワー システムズ アクチボラゲット 高電圧直流伝送システム用の海中電極
MY140418A (en) * 2006-01-27 2009-12-31 Alpha Perisai Sdn Bhd Electrical power transmission system
JP2011234511A (ja) * 2010-04-27 2011-11-17 Toshiba Corp 発変電設備
US8018083B2 (en) * 2010-08-05 2011-09-13 General Electric Company HVDC connection of wind turbine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610799A1 (de) * 1975-03-20 1976-10-07 Francisco Arnold Richard Vorrichtung und verfahren zur herstellung und zum verlegen von unterwasserleitungen
US4132084A (en) * 1975-08-19 1979-01-02 Francisco Arnold Richard D Submarine conductor for the deep sea transmission of high voltage electrical power
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
EP2793333A1 (fr) * 2011-12-12 2014-10-22 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

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