EP1128395A1 - Hoch und Höchstspannungsgleichstromenergiekabel - Google Patents

Hoch und Höchstspannungsgleichstromenergiekabel Download PDF

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Publication number
EP1128395A1
EP1128395A1 EP01400363A EP01400363A EP1128395A1 EP 1128395 A1 EP1128395 A1 EP 1128395A1 EP 01400363 A EP01400363 A EP 01400363A EP 01400363 A EP01400363 A EP 01400363A EP 1128395 A1 EP1128395 A1 EP 1128395A1
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EP
European Patent Office
Prior art keywords
styrene
insulation
cable
voltage
cable according
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.)
Granted
Application number
EP01400363A
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English (en)
French (fr)
Other versions
EP1128395B1 (de
Inventor
Robert Gadessaud
Bernard Aladenize
Patrice Tran
Hakim Janah
Pierre Mirebeau
Daniel Acroute
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.)
Nexans SA
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Nexans SA
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Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to DK01400363T priority Critical patent/DK1128395T3/da
Publication of EP1128395A1 publication Critical patent/EP1128395A1/de
Application granted granted Critical
Publication of EP1128395B1 publication Critical patent/EP1128395B1/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
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/442—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from aromatic vinyl compounds

Definitions

  • the present invention relates to high and very high energy cables direct current voltage.
  • the cables covered by the present invention are cables from 60 to 600 kV and more, preferably those of 150 kV and more, direct current, comprising a extruded polymeric insulation.
  • Document JP-A-2-18811 discloses a current power cable continuous, which has a conductive core and an extruded polymeric insulation surrounding the soul.
  • This insulation consists of a mixture of polyethylene high density, low density polyethylene, peroxide and preferably black of carbon in the form of fine particles, with from 2 to 20% by weight high density polyethylene and from 0.2 to 1.5% by weight of carbon black, and is cross-linked. It is intended to improve the breakdown characteristics in DC voltage and in shock voltage, in particular of the cable, with respect to with the same characteristics as an analog cable but the insulation of which includes a single type of polyethylene.
  • Patent EP-A-0 539 905 discloses a high voltage current cable continuous in which the insulation material is made of rubber thermoplastic comprising an elastomeric phase and a phase thermoplastic.
  • the rubber thermoplastic can be of olefinic type.
  • the elastomeric phase consists of an ethylene-propylene rubber and the thermoplastic phase is chosen from polyethylene and polypropylene.
  • the thermoplastic rubber may be of styrenic type.
  • the elastomeric phase can be hydrogenated and chosen from polybutadiene and polyisoprene and the thermoplastic phase formed of polystyrene.
  • the present invention aims to achieve a high and very high cable direct current voltage avoiding dielectric losses in the insulation and having both breakdown resistance characteristics in DC voltage and resistance to breakdown in optimized impulse impulse voltage, for a high useful operating voltage, and a quantity of charges space minimized in the presence of continuous high voltage, for a very good cable reliability.
  • a high or very high voltage direct current cable comprising a conductive core and an extruded polymeric insulation made of styrenic material, characterized in that said material consists a blend of polyethylene and a hydrogenated block copolymer of styrene chosen from the copolymers of styrene and butadiene and of styrene and isoprene, has a mass content of styrene of 11 to 18% and is not crosslinked.
  • the useful operating voltage in steady state permanent is particularly high and at the same time the risk of breakdown are made very weak thereby increasing the reliability of the cable.
  • the mass content of styrene in said mixture is chosen between 11.5 and 16%.
  • said cable comprises an internal semiconductor screen between said conductive core and said insulation and an external semiconductor screen around said insulation, constituted in a polymer matrix which is chosen to be of the same kind as said insulation, contains a conductive filler and is not crosslinked.
  • Power cable 1 high or very high voltage and direct current illustrated in FIG. 1 comprises a central conductive core 2 and, successively and coaxially around this core, a semiconductor screen internal 3, insulation 4, external semiconductor screen 5, screen protective metal 6 and an outer protective sheath 7.
  • screens 3, 5 and 6 are preferable. Insulation 4 is made according to the invention.
  • the semiconductor screens 3 and 5 are also produced according to the present invention.
  • the protective structure which includes the metal screen 6 and the sheath exterior, may also include other protective elements such as in particular a protective strip, not shown, swelling in the presence of water and semiconductor or not.
  • a protective strip is interposed preferably between the external semiconductor screen and the metal screen. It ensures itself or is associated with conductive means ensuring electrical continuity between the external semiconductor screen and the metal screen.
  • the protective structure of this cable is as such of known type and outside the scope of the present invention.
  • the insulation 4 of the cable 1 is constituted of a mixture comprising polyethylene, a hydrogenated block copolymer of styrene and an antioxidant, having a mass content of styrene of between 11 and 18% and being uncrosslinked.
  • the polyethylene used is chosen from low polyethylene and / or medium and / or high density.
  • the hydrogenated block copolymer is chosen among the copolymers of styrene and butadiene and of styrene and isoprene. It is preferably a hydrogenated tri-block copolymer.
  • the rate of 11 to 18% of styrene in this mixture allows surprising characteristics to be obtained resistance to breakdown under continuous tension and breakdown under shock voltage caused by lightning on a converter station connected to the cable or on one end of the cable which is optimized to allow high useful voltage. It simultaneously minimizes the quantity space charges in the insulation of the cable under DC voltage, which greatly reduces the risk of breakdown.
  • This mass content of styrene in the mixture is preferably from 11.5 to 16%.
  • the various samples used consist of a mixture which comprises low density polyethylene, a tri-block hydrogenated copolymer of styrene-butadiene- styrene.
  • the mass content of styrene is different according to the samples. These all have the same thickness.
  • This mixture is not crosslinked and thus avoids the presence of crosslinking byproducts which lead to an increase in the density of space charges.
  • Vimp is the breakdown resistance under impact voltage and Vcc resistance to breakdown in DC voltage of samples at 70 ° C and Vo the permissible useful voltage gradient in steady state, in kV / mm, according to the mass rate of styrene in the samples.
  • Vimp and Vcc as a function of the mass rate of styrene are illustrated in Figure 2. They show that the breakdown resistance in DC voltage Vcc which is relatively low at 0% of styrene then increases significantly for styrene levels up to 10% and does not decrease while very weakly remaining very high for styrene levels ranging from 10 to 15% and above up to a limit rate of easy implementation possible. At the same time, the breakdown resistance under impact voltage Vimp is relatively raised to 0% styrene and decreases by cons very quickly, for a rate of styrene increasing up to 10%, but then increases very suddenly and very surprisingly beyond 10% and this up to the limit bet rate easy to work.
  • the performance obtained through the use of insulation according to the present invention are further improved by also using internal and external semiconductor screens made from a matrix polymer of the same kind as said insulation.
  • This matrix of semiconductor screens is made up of a mixture of polyethylene, of hydrogenated block copolymer of styrene and antioxidant, in which a conductive filler is incorporated to obtain electrical resistance and mechanical properties and rheological required. It allows chemical and electrical compatibility between the insulation material and that of semiconductor screens, at their interfaces. It thus brings an additional reduction in space charges in the insulation and a reduction in the intensity of the electric field at the interfaces, by improving the resistance of the cable under continuous tension and lightning shock.
  • the semiconductor screen matrix is not cross-linked, for the same reasons than those indicated above for insulation.
  • the conductive filler is carbon black or preferably an acetylene black.
  • the styrene content of the polymer matrix of semiconductor screens is as such less critical than that of insulation, due to the presence of the conductive filler incorporated in this matrix.
  • the matrix can comprise from 0.1 to 20% of styrene. Preferential content is 1 to 10.%.
  • the space charge measurements illustrated in Figures 5, 6 and 7 are carried out by a pulsed electro-acoustic process (PEA), as such known. They were carried out on a flat sample of the insulation system concerned, consisting of a layer of insulation 0.5 mm thick and two semiconductor layers 0.2 to 0.3 mm thick located on both sides other side of the insulation layer, applying a potential difference between the semiconductor layers.
  • PEA pulsed electro-acoustic process
  • the insulation system according to the invention is with an insulating layer 4 according to the invention and with semiconductor layers 3 'and 5 'classics.
  • the preferred insulation system according to the invention has an insulation layer 4 and a semiconductor layer 3 and 5, which are all in accordance with the present invention.
  • the curves in FIG. 5 show that the layer of insulation 4 'of the conventional insulation system contains significant space charges in all its thickness.
  • the load quantities are all the more important as the voltage gradient is high.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Communication Cables (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Cable Accessories (AREA)
EP01400363A 2000-02-24 2001-02-12 Hoch und Höchstspannungsgleichstromenergiekabel Expired - Lifetime EP1128395B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK01400363T DK1128395T3 (da) 2000-02-24 2001-02-12 Kraftkabel til höjspændt og meget höjspændt jævnström

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0002324 2000-02-24
FR0002324A FR2805656B1 (fr) 2000-02-24 2000-02-24 Cable d'energie haute et tres haute tension a courant continu

Publications (2)

Publication Number Publication Date
EP1128395A1 true EP1128395A1 (de) 2001-08-29
EP1128395B1 EP1128395B1 (de) 2004-06-30

Family

ID=8847355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400363A Expired - Lifetime EP1128395B1 (de) 2000-02-24 2001-02-12 Hoch und Höchstspannungsgleichstromenergiekabel

Country Status (7)

Country Link
US (1) US6509527B2 (de)
EP (1) EP1128395B1 (de)
JP (1) JP4986331B2 (de)
AT (1) ATE270460T1 (de)
DE (1) DE60104029T2 (de)
DK (1) DK1128395T3 (de)
FR (1) FR2805656B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932604A1 (fr) * 2008-06-11 2009-12-18 Nexans Cable electrique a haute tension

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0001748D0 (sv) * 2000-03-30 2000-05-12 Abb Ab Induktionslindning
SE0001123L (sv) * 2000-03-30 2001-10-01 Abb Ab Kraftkabel
US8257782B2 (en) * 2000-08-02 2012-09-04 Prysmian Cavi E Sistemi Energia S.R.L. Electrical cable for high voltage direct current transmission, and insulating composition
US7208682B2 (en) * 2002-12-11 2007-04-24 Prysmian Cavi E Sistemi Energia Srl Electrical cable with foamed semiconductive insulation shield
US20040194996A1 (en) * 2003-04-07 2004-10-07 Floyd Ysbrand Shielded electrical wire construction and method of manufacture
DE10322379A1 (de) * 2003-05-17 2004-12-02 Nexans Elektrisches Kabel für einen Linearmotor und daraus hergestellte Wicklung
US20050288461A1 (en) * 2004-06-25 2005-12-29 Jensen Michael D Polymerization catalysts for producing polymers with low levels of long chain branching
JP5437250B2 (ja) * 2007-09-25 2014-03-12 ダウ グローバル テクノロジーズ エルエルシー オレフィン基材間の接着性を調節するためのブレンド成分としてのスチレン性ポリマー
EP2380177B1 (de) * 2008-12-17 2015-02-25 ABB Technology AG Gleichstromkabel für hohe spannungen
PT2312591T (pt) * 2009-08-31 2020-04-23 Nexans Barreira metálica anti-humidade resistente à fadiga em cabo elétrico submarino
EA022362B1 (ru) * 2009-11-11 2015-12-30 Бореалис Аг Силовой кабель, способ его получения и применение полимерной композиции, содержащей полиолефин
ES2534468T5 (es) 2009-11-11 2022-10-31 Borealis Ag Composición polimérica y cable eléctrico que comprende la composición polimérica
IN2012DN03436A (de) 2009-11-11 2015-10-23 Borealis Ag
FI3098244T4 (fi) 2009-11-11 2023-09-05 Silloitettavissa oleva polymeerikoostumus ja kaapeli, jolla on edulliset sähköiset ominaisuudet
KR20130016285A (ko) * 2010-03-17 2013-02-14 보레알리스 아게 유리한 전기적 특성을 갖는 와이어 및 케이블 용도의 중합체 조성물
BR112012023374B1 (pt) * 2010-03-17 2020-06-09 Borealis Ag cabo de alimentação, processo para a produção, composição polimérica e uso da mesma
CN103003351B (zh) * 2010-06-10 2015-09-02 北欧化工股份公司 一种组合物及其应用
EP3591670A1 (de) 2010-11-03 2020-01-08 Borealis AG Polymerzusammensetzung und stromkabel mit der polymerzusammensetzung
EP2705079B1 (de) * 2011-05-04 2018-01-24 Borealis AG Polymerzusammensetzung für elektrische vorrichtungen
CN116102818A (zh) * 2014-10-27 2023-05-12 北欧化工股份公司 具有优越电性能的聚合物组合物以及电缆
CN115505192A (zh) * 2014-10-27 2022-12-23 北欧化工股份公司 具有优越电性能的用于电缆应用的聚合物组合物
WO2016097250A1 (en) * 2014-12-19 2016-06-23 Borealis Ag Polymer composition for w&c application with advantageous electrical properties

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EP0370518A2 (de) * 1988-11-25 1990-05-30 Nippon Unicar Company Limited Flammhemmende Zusammensetzung
US5561185A (en) * 1993-11-12 1996-10-01 The Furukawa Electric Co., Ltd. Fire-retardant resin composition and a covered electric wire
US5889117A (en) * 1995-03-20 1999-03-30 Bicc Cables Corporation Polymeric compositions for power cables

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4060659A (en) * 1975-11-07 1977-11-29 Sumitomo Electric Industries, Ltd. Electric wires or cables with styrene containing dielectric layer
EP0370518A2 (de) * 1988-11-25 1990-05-30 Nippon Unicar Company Limited Flammhemmende Zusammensetzung
US5561185A (en) * 1993-11-12 1996-10-01 The Furukawa Electric Co., Ltd. Fire-retardant resin composition and a covered electric wire
US5889117A (en) * 1995-03-20 1999-03-30 Bicc Cables Corporation Polymeric compositions for power cables

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2932604A1 (fr) * 2008-06-11 2009-12-18 Nexans Cable electrique a haute tension
EP2136376A1 (de) * 2008-06-11 2009-12-23 Nexans Hochspannungsstromkabel

Also Published As

Publication number Publication date
US6509527B2 (en) 2003-01-21
FR2805656A1 (fr) 2001-08-31
DE60104029D1 (de) 2004-08-05
US20010030053A1 (en) 2001-10-18
ATE270460T1 (de) 2004-07-15
EP1128395B1 (de) 2004-06-30
FR2805656B1 (fr) 2002-05-03
JP2001307564A (ja) 2001-11-02
JP4986331B2 (ja) 2012-07-25
DK1128395T3 (da) 2004-11-15
DE60104029T2 (de) 2004-10-28

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