EP0562331B1 - Elektrisches Ein- oder Mehrleiterverbundkabel mit integrierter Kühlung - Google Patents

Elektrisches Ein- oder Mehrleiterverbundkabel mit integrierter Kühlung Download PDF

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Publication number
EP0562331B1
EP0562331B1 EP93103539A EP93103539A EP0562331B1 EP 0562331 B1 EP0562331 B1 EP 0562331B1 EP 93103539 A EP93103539 A EP 93103539A EP 93103539 A EP93103539 A EP 93103539A EP 0562331 B1 EP0562331 B1 EP 0562331B1
Authority
EP
European Patent Office
Prior art keywords
composite
cable according
electrical
hollow
cable
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.)
Expired - Lifetime
Application number
EP93103539A
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German (de)
English (en)
French (fr)
Other versions
EP0562331A2 (de
EP0562331A3 (en
Inventor
Werner Prof. Dr.-Ing. Rasquin
Heinrich Prof. Dr.-Ing. Brakelmann
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.)
Felten and Guilleaume Energietechnik AG
Original Assignee
Felten and Guilleaume Energietechnik 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 Felten and Guilleaume Energietechnik AG filed Critical Felten and Guilleaume Energietechnik AG
Publication of EP0562331A2 publication Critical patent/EP0562331A2/de
Publication of EP0562331A3 publication Critical patent/EP0562331A3/de
Application granted granted Critical
Publication of EP0562331B1 publication Critical patent/EP0562331B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
    • H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid

Definitions

  • the invention relates to an electrical single or multi-conductor composite cable with integrated cooling according to the preamble of the main claim.
  • DE OS 16 40 122 shows a multi-core electrical pressure cable, in which a cooling tube is arranged in the gusset spaces between the energy wires.
  • the shape of the cooling tube is circular, so that there is only a linear contact with the conductor wire.
  • the position of the oval wires of the cable is not fixed over the cable length; their position is random because of the twists that cannot be prevented in the stranding process.
  • the cooling tube has insufficient contact with the wire.
  • Another form of cooled cable is to place a coolant tube centrally in the conductor of the energy core (DE 23 27 316).
  • tubular channels are arranged helically around the tubular screen around a deep-frozen conductor (DE-A-2 342 160).
  • the cooling channels are firmly connected to the conductor - here preferably a superconductor.
  • Such an arrangement is not transferable to high-performance power cables insulated with dielectric.
  • FR-A-1 221 588 shows a cable with extruded tubes with cooling channels.
  • the wires of the cable are stranded in a preferably metallic metal jacket. Cooling channels are formed on the circumference of the metal jacket. Since the cooling channels do not rest in the gusset spaces of the cores and also not directly on the cores, only limited heat dissipation is possible.
  • FR-A-995 055 discloses an energy cable with gas-carrying metal tubes and conductors according to the preamble of claim 1.
  • the metal tubes are designed as stranded cable elements, each with a hollow channel for forward and return.
  • the coolant-carrying elements fill the gusset space between the wires under the cable jacket.
  • the thermal load on a cable increases with increasing transmission power. Ways need to be found to accommodate the increase in performance.
  • the invention has for its object to propose cooled power cables for higher performance based on existing design principles.
  • the power cables according to the invention are to be distinguished by a compact structure.
  • the task is solved with the features of the main claim. Advantageous further developments can be found in the subclaims.
  • existing pipes can be used by pulling the old cables out and pulling in the cables according to the invention. They can be used to transmit higher power, saving expensive earthwork during the laying process.
  • the lower thermal load on the cable also means a lower thermal load on the ground.
  • the composite profiles according to the invention also have a supporting function, which has a favorable effect on the determination of the wires in the cable.
  • a typical application of the invention is a multi-core External gas pressure cable.
  • the core gusset rooms there are composite profiles that are crossed with one or more hollow channels with different cross-sections.
  • a cooling medium is passed through the hollow channels.
  • thermally insulate at least one hollow duct In the case of cables which contain a composite profile with a plurality of hollow ducts or a plurality of composite profiles with a hollow duct, it is proposed to thermally insulate at least one hollow duct.
  • a thermally insulating material made of glass or plastic in the form of braid, powder, fibers or fine-grained is provided as insulation.
  • the thermally insulated hollow channel serves to return the heated cooling medium, so that thermal couplings between the cooling medium supply line and return line are prevented. With this measure, the heated cooling medium can become a heat exchanger in the same cable section to be led back. As a result, the heat exchanger stations can be concentrated in specific locations and still do not have to reduce the distance between the stations.
  • the thermal insulation can consist of a mesh of glass fibers with which the jacket of the hollow channel is wound.
  • Another solution is to embed a fine-grain thermal insulator between two coaxial tubes.
  • the two tubes can be made of stainless steel or the inner tube is made of stainless steel and the outer tube made of aluminum.
  • the composite profiles with insulated hollow duct are stranded as cable elements in the multi-conductor cable with the cable cores or in the single-conductor cable with the cable core, since even a heat-insulating covering made of braid around the hollow duct jacket can be processed in one step in the manufacture of the composite profiles in the extruder.
  • the sum of the cross sections of the hollow ducts for the supply line of the cooling medium can be chosen equal to the sum of the cross sections of the hollow ducts for the return line.
  • Another embodiment of the cable according to the invention is proposed for single-core cables which are used in high-performance networks, e.g. for 400 kV, can be used.
  • the composite ducts, which are inserted in the space above the vein, have a kidney shape.
  • the composite profiles are placed close or less closely adjacent to each other around the wire.
  • the edge profile of the adjacent composite profiles is flat if the maximum filling of the space above the wire is required.
  • the cross sections of the composite profiles are adapted to the cross section of the gusset spaces in the multi-conductor cable.
  • the outer contour of the composite profiles is designed so that they optimally fill the gusset space in the multi-conductor cable and lie close to the surface of the wires, so that good heat transfer is guaranteed.
  • the contour of the composite profile facing the wire corresponds to the contour of the wire facing the composite profile.
  • gusset spaces of different sizes are created, so that the gusset space is filled to the maximum. It is also proposed to fill gusset rooms of different sizes with composite profiles of different cross-sections. For example, in two gusset rooms with a small triangular cross section there can be one composite profile each and in the third gusset room only one composite profile with large triangular cross section.
  • An almost triangular cross section optimally fills the gusset space and allows extensive contact with the wire surface.
  • the composite profiles can be stranded in particular in the single-core cable.
  • the positions of the axes of the oval wires are determined by stranding the composite profiles.
  • the gusset rooms are given defined sizes and the core axes are fixed.
  • a true-to-profile core layer is created over the entire cable length.
  • the composite profile is preferably made of highly thermally conductive material. Mainly aluminum or copper are available as materials.
  • the composite profile is stranded with the wires as a previously extruded cable element.
  • the close contact of the composite profiles made of good heat-conducting material allows effective heat dissipation from the wire surfaces.
  • the hollow channels are made of thin, corrosion-resistant tubes, preferably made of stainless steel.
  • the composite profiles can be made from extruded aluminum, with the stainless steel tubes being fed from the inlet side into the press in which the composite profiles are extruded.
  • the heat absorbed by the cooling medium is dissipated via heat exchangers located at certain stations along the cable route.
  • a composite profile is provided with a plurality of parallel channels parallel to the hollow channel.
  • a serrated or tooth profile is created around the jacket of the hollow channel. Paired, symmetrical parallel channels are favorable.
  • Composite profiles equipped with parallel channels can also be manufactured as extrusion elements.
  • the parallel channels can either be straight (parallel) to the axis of the composite profile or lead around the hollow channel in a helix.
  • a fiber-shaped sensor and / or at least one optical message conductor can be drawn into at least one parallel channel.
  • the parallel channels are preferably open to the jacket of the hollow channel.
  • a sensor inserted into the parallel channel lies directly on the jacket.
  • Physical or chemical sensors are proposed as sensors that report operating variables of the cable or the line system, which can also be used for alarm messages.
  • Optical fibers are very suitable as sensors. For example, they can be used to detect heat (hot spots) or magnetic field changes.
  • a three-wire gas pressure cable 20 is shown.
  • the three cores 22, 22 ', 22 "(conductor cross-section typically 90 to 800 mm 2 ) are each surrounded with an insulation 24, which is provided with an inner 26 and an outer conductive layer 27.
  • a gas-tight but pressure-resilient membrane is located above it of metal jacket 29 and a pressure protection bandage 30.
  • the stranded composite is held together by a flat wire reinforcement 40 which is designed to be slidable so that the cable can be easily pulled into outer tubes.
  • the gas pressure is maintained in the gas space 50.
  • the outer jacket 53 consists of a solid metal tube 52 (Iron) with corrosion protection 54.
  • the composite profiles each have three hollow channels 66, 66', 66" of different cross-section through which a cooling medium can flow.
  • a hollow channel preferably consists of a stainless steel tube 64 which is embedded in the composite profile 62 extruded from aluminum.
  • the contour 31 of the composite profiles is designed so that it matches the contour of the wire surface 32 of the conductor 22, 22 ', 22 ", so that good heat transfer is ensured.
  • the space 30 between the composite profiles 62, 62', 62" and the wires 22, 22 ' , 22 " is unfilled.
  • the axes AA, A'A 'of the oval wires 22, 22', 22 "run almost towards the center of the cable.
  • the axes fall AA, A'A 'of two wires together, the axis BB of the third wire lies parallel to the axis of the first wire. Gusset spaces of different sizes are created.
  • the cross sections of the composite profiles are the cross section of the gusset spaces and the outer contour 31 of the composite profiles is the contour 32 of 2 shows that a composite profile with a triangular cross-section lies in two gusset spaces 30 and a circular composite profile 72 in the third gusset space.
  • the cable sheath 53 is constructed as in FIG.
  • the composite profiles are each crossed with a coolant-carrying hollow channel 76, 76 ', 76 "with a circular cross-section. Furthermore, it is shown that a composite profile is provided with a stainless steel tube 64, which is wound with a material 68 of low thermal conductivity (braid made of glass fibers).
  • the outer tube 70 can be made of aluminum or stainless steel.
  • the cross sections of two hollow channels 76 ', 76 are small and the cross section of the third hollow channel 76 corresponds approximately to the sum of the cross sections of the first two hollow channels.
  • the hollow channels 76', 76" are for the supply of the cooling medium and the thermally insulated hollow channel 76 is for the return of the heated cooling medium is provided.
  • the axes of the wires assume more or less any positions in the stranding process. Since the cross-sections of the composite profiles are matched to the outer contours of the cores and the size of the gusset spaces, the position of the oval conductor cores is determined by the stranding of the composite profiles.
  • FIG. 3 shows an outer pressure cable with sheath 53 in which the axes AA, BB, CC of the oval conductors 22, 22 ', 22 "lie on the sides of a triangle, so that gusset spaces 30 of equal size are created.
  • the outer contour 31 of the composite profiles is designed according to the contour 32 of the wire surface.
  • the composite profiles are each crossed with a coolant-carrying hollow channel 66, 66 ', 66 ", the cross sections (as in FIG. 2) being selected to be of different sizes.
  • the hollow channel with the larger cross section consists of two coaxial tubes 64.70.
  • the space between the tubes is filled with a thermally insulating medium 68.
  • the thermally insulated hollow channel 66 serves to return the heated cooling medium.
  • a composite profile 62 ' is provided with additional parallel channels 80 parallel to the hollow channel 66'.
  • the parallel channels can either be designed parallel to the axis of the composite profile or lead around the hollow channel in a helical line.
  • the fiber 82 of an optical waveguide is drawn into one of the parallel channels.
  • the optical fiber serves as a physical or chemical sensor.
  • the cable sheath 53 is constructed as in FIG. 1.
  • Fig. 4 shows with the reference numerals as used in Fig. 2, a three-wire cable (gas pressure cable) with jacket 53 and with a central composite profile 62 ', with four composite profiles 62 located in the Zwikkelraum 30 and a thermally insulated composite profile 72 with outer circular cross section for the coolant return.
  • the outer contour 31 of the composite profiles is designed in accordance with the contour 32 of the wire surface.
  • the hollow channels 76, 76 ' are each surrounded by a longitudinal tube 64, 64'.
  • FIG. 5 shows a single-core cable 100 with composite profiles and hollow channels 116.
  • FIG. 5 shows four embodiments, which are shown in the drawing as four sectors S1, S2, S3, S4 of the cable. The embodiments differ only in the design of the composite profiles 108, 108 ', 108 ", 108"'.
  • the conductor 102 is surrounded by a conductor smoothing 104, above which the conductor insulation 105 with an outer conductive layer 106 connects.
  • the inner cable is enclosed by a corrugated sheath 131, which lies in a conventional outer sheath 132 with corrosion protection 134.
  • the composite profiles 108 ' are made circular from highly thermally conductive material with an internal stainless steel tube 122.
  • sector S2 there are only sheathless, circular composite profiles 108 "in the space 130.
  • sectors S3 and S4 the adjacent, kidney-shaped composite profiles abut each other. Their contour 110 facing the core corresponds to the contour contour 106 of the core.
  • the edge profile 111 is for adjacent composite profile approximately circular (semicircular arc), in sector S4, the edge profile 112 is flat.
  • the closest contact between adjacent composite profiles 108 occurs with a flat edge profile 112, as shown in sector S4.
  • the thermal and electrical conductivity is optimal because the space 130 is almost completely filled.
  • the magnetic shielding effect is high in this embodiment.
  • a single-core cable with a composite profile is only produced in one of the embodiments 108, 108 ', 108 ", 108"' shown in the four sectors.
  • mixed forms of at least two embodiments of the composite profiles are also possible.
  • the hollow channels 116 can have different internal cross sections. It is also not shown that hollow ducts in the composite profiles of the single-core cable can be surrounded by a heat-insulated jacket. The heat-insulated hollow channels are intended for the return of the cooling medium. As already mentioned, the cross sections can also be selected here in such a way that the cooling medium is fed through one or more hollow channels via a cross-sectional sum that corresponds approximately to the cross-sectional sum of the hollow channels for the return line of the cooling medium.
  • the hollow ducts 116 in single-conductor cables 100 can also be surrounded by parallel ducts.

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EP93103539A 1992-03-24 1993-03-05 Elektrisches Ein- oder Mehrleiterverbundkabel mit integrierter Kühlung Expired - Lifetime EP0562331B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209928A DE4209928C1 (enrdf_load_stackoverflow) 1992-03-24 1992-03-24
DE4209928 1992-03-24

Publications (3)

Publication Number Publication Date
EP0562331A2 EP0562331A2 (de) 1993-09-29
EP0562331A3 EP0562331A3 (en) 1993-12-22
EP0562331B1 true EP0562331B1 (de) 1997-09-03

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EP (1) EP0562331B1 (enrdf_load_stackoverflow)
DE (2) DE4209928C1 (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007137159A3 (en) * 2006-05-19 2008-07-03 Cvc Ltd 1 Llc Conductor raceway separator
EP3807123B1 (en) * 2018-06-13 2023-04-05 TE Connectivity Corporation Charging system with cooling tube
US11935672B2 (en) 2021-07-30 2024-03-19 Aptiv Technologies AG Power cable assembly for a power distribution system having an integrated cooling system
US12154706B2 (en) 2021-07-30 2024-11-26 Aptiv Technologies AG Power cable assembly for a power distribution system having an integrated cooling system

Families Citing this family (31)

* Cited by examiner, † Cited by third party
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JPH10106362A (ja) * 1996-08-07 1998-04-24 Sumitomo Wiring Syst Ltd 電気自動車充電用冷却ケーブル
DE19723879C1 (de) * 1997-06-06 1998-08-13 Felten & Guilleaume Energie Kabelanlage zur Übertragung großer Leistung
DE19820379C1 (de) * 1998-05-07 1999-07-08 Felten & Guilleaume Ag Verfahren zur Nutzung der Verlustleistung eines Starkstromkabels
DE19843100B4 (de) * 1998-09-21 2004-11-04 Nkt Cables Gmbh Drehstromkabel
GB9928783D0 (en) * 1999-12-07 2000-02-02 Bircumshaw Peter S Underground power cable conduit etc
DE10012950B4 (de) * 2000-03-16 2010-01-21 Volkswagen Ag Gekühlte Kabel, insbesondere luftgekühlte Kabel
DE10039274A1 (de) * 2000-08-11 2002-02-21 Alcatel Sa Temperatur beständiges Nachrichtenkabel
DE502006001606D1 (de) * 2006-06-23 2008-10-30 Delphi Tech Inc Kabelbaum mit Kühlung
JP2011124129A (ja) * 2009-12-11 2011-06-23 Showa Aircraft Ind Co Ltd 高周波用の電線
DE102010038778A1 (de) * 2010-08-02 2012-02-02 Robert Bosch Gmbh Gassensor
EP2426674A1 (de) * 2010-09-01 2012-03-07 Nexans Anordnung zum Kühlen eines Energiekabels
CA2821796C (en) 2010-12-15 2015-08-25 Abb Technology Ltd High voltage electric cable
WO2012090004A1 (en) * 2010-12-30 2012-07-05 Skanska Utilities Limited Energy recovery system
DE102011100389A1 (de) 2011-05-04 2012-05-24 Volkswagen Aktiengesellschaft Ladekabel, Vorrichtung zur Übertragung elektrischer Energie, Verfahren zur Herstellung einer Vorrichtung und Verfahren zur Übertragung elektrischer Energie
NO2817807T3 (enrdf_load_stackoverflow) * 2012-02-20 2018-06-16
NO20120777A1 (no) * 2012-07-04 2014-01-06 Aker Subsea As Varmeavledning i kraftkabler, kraftumbilikaler og andre kabler
ITMI20121899A1 (it) * 2012-11-07 2014-05-08 Prysmian Spa Cavo elettrico per un impianto solare per la generazione di energia elettrica e di energia termica ed impianto che lo comprende
NO340457B1 (no) * 2013-05-08 2017-04-24 Nexans Indre kjøling av kraftforsyningskabler og kraftforsyningsumbilikaler
US9321362B2 (en) * 2014-02-05 2016-04-26 Tesia Motors, Inc. Cooling of charging cable
DE102015114133A1 (de) * 2015-08-26 2017-03-02 Phoenix Contact E-Mobility Gmbh Stromkabel mit einer Kühlleitung
DE102016210152A1 (de) * 2016-06-08 2017-12-14 Leoni Kabel Gmbh Hochfrequenzleitung und Verwendung einer solchen
DE102016117261B3 (de) * 2016-09-14 2017-11-30 HARTING Automotive GmbH System aus einem Steckverbinder, einem fluidgekühlten Kabel und einer Anschlusseinheit
DE102016118193A1 (de) 2016-09-27 2018-03-29 Phoenix Contact E-Mobility Gmbh Elektrisches Kabel mit einer Kühlmittelleitung
DE102016224104A1 (de) * 2016-12-05 2018-06-07 Leoni Kabel Gmbh Hochstromkabel und Stromversorgungssystem mit Hochstromkabel
DE102016224106A1 (de) * 2016-12-05 2018-06-07 Leoni Kabel Gmbh Hochstromkabel und Stromversorgungssystem mit Hochstromkabel
DE102017105985A1 (de) * 2017-03-21 2018-09-27 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Ladekabelanordnung
US20180350488A1 (en) * 2017-06-02 2018-12-06 Schlumberger Technology Corporation Electrical cables and processes for making and using same
DE102018130261B4 (de) * 2018-11-29 2024-08-14 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur faseroptischen Temperaturmessung in einem als Hohlfaser ausgebildeten Lichtwellenleiter, Temperatursensor, Kühlsystem und Ladesystem
CN111724943A (zh) * 2019-03-19 2020-09-29 广东吉青电缆实业有限公司 一种新型多芯散热轨道交通车辆用电缆
CN117153477B (zh) * 2023-10-30 2024-02-02 广东南缆电缆有限公司 一种抗拉双重冷却液冷电缆
CN119673541A (zh) * 2024-12-06 2025-03-21 武汉第二电线电缆有限公司 一种伺服系统用恒温动力电缆及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR995055A (fr) * 1949-07-18 1951-11-27 Geoffroy Delore Perfectionnements aux câbles de puissance pour haute tension
GB875930A (en) * 1958-06-23 1961-08-23 Pirelli General Cable Works Improvements in or relating to electric cables
DE1640122A1 (de) * 1968-03-07 1970-05-21 Felten & Guilleaume Carlswerk Elektrisches Druckkabel Elektrisches Druckkabel
DE2342160B2 (de) * 1973-08-17 1977-06-16 AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach Kuehlschirm fuer elektrische kabel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007137159A3 (en) * 2006-05-19 2008-07-03 Cvc Ltd 1 Llc Conductor raceway separator
EP3807123B1 (en) * 2018-06-13 2023-04-05 TE Connectivity Corporation Charging system with cooling tube
US11935672B2 (en) 2021-07-30 2024-03-19 Aptiv Technologies AG Power cable assembly for a power distribution system having an integrated cooling system
US12154706B2 (en) 2021-07-30 2024-11-26 Aptiv Technologies AG Power cable assembly for a power distribution system having an integrated cooling system

Also Published As

Publication number Publication date
EP0562331A2 (de) 1993-09-29
DE59307231D1 (de) 1997-10-09
DE4209928C1 (enrdf_load_stackoverflow) 1992-12-24
EP0562331A3 (en) 1993-12-22

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