EP1128395B1 - Câble d'énergie haute et très haute tension à courant continu - Google Patents
Câble d'énergie haute et très haute tension à courant continu Download PDFInfo
- Publication number
- EP1128395B1 EP1128395B1 EP01400363A EP01400363A EP1128395B1 EP 1128395 B1 EP1128395 B1 EP 1128395B1 EP 01400363 A EP01400363 A EP 01400363A EP 01400363 A EP01400363 A EP 01400363A EP 1128395 B1 EP1128395 B1 EP 1128395B1
- Authority
- 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.)
- Expired - Lifetime
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Classifications
-
- 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, especially 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 object of the present invention is to produce a high and very high cable direct current voltage avoiding dielectric losses in the insulation and having both continuous breakdown breakdown characteristics 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 high DC 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.
- the high or very high voltage and direct current power cable 1 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 makes it possible to obtain surprising characteristics 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 in shock 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 on the other side of the insulating layer, applying a potential difference between the semiconductor layers.
- PEA pulsed electro-acoustic process
- the two have been designated under the references 3 ′ and 5 ′ semiconductor layers and reference 4 'the insulation layer of a system classic insulation.
- 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 amounts of charge 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)
Description
- la figure 1 est une vue en perspective éclatée d'un câble haute ou très haute tension à courant continu selon l'invention,
- la figure 2 illustre les caractéristiques de claquage en tension de choc de foudre et en tension continue, en fonction du système d'isolation du câble,
- les figures 3 et 4 illustrent sous forme de graphe le gradient de tension utile admissible en fonction dudit système d'isolation.
- La figure 5 illustre les quantités de charges d'espace dans un système d'isolation classique, pour différentes valeurs de gradient de potentiel appliqué dans ce système.
- - Les figures 6 et 7 illustrent les quantités de charges d'espace dans des systèmes d'isolation conformes à l'invention, pour les mêmes valeurs de gradient de potentiel que dans la figure 5.
Styrène % en poids | Vimp kV/mm | Vcc kV/mm | Vo (r=1,4) kV/mm | Vo (r=1,1) kV/mm |
0 | 223 | 146 | 146 | 146 |
1 | 218 | 178 | 156 | 178 |
5 | 203 | 225 | 145 | 185 |
10 | 137 | 336 | 98 | 125 |
12 | 231 | 323 | 165 | 210 |
15 | 219 | 295 | 156 | 199 |
Claims (6)
- Câble haute ou très haute tension à courant continu, comportant une âme conductrice et une isolation polymérique extrudée réalisée en matériau styrénique, caractérisé en ce que ledit matériau de ladite isolation (4) est constitué d'un mélange qui comprend du polyéthylène, un copolymère séquencé hydrogéné de styrène, choisi parmi les copolymères de styrène et butadiène et de styrène et isoprène, et un anti-oxydant, a un taux massique de styrène de 11 à 18 % et est non réticulé.
- Câble selon la revendication 1, caractérisé en ce que ledit mélange présente un taux de styrène compris entre 11,5 et 16 %.
- Câble selon l'une des revendications 1 et 2, caractérisé en ce que ledit copolymère séquencé hydrogéné de styrène est tri-séquencé.
- Câble selon l'une des revendications 1 à 3, caractérisé en ce qu'il comporte un écran semi-conducteur interne (3) entre ladite isolation (4) et ladite âme conductrice (2) et un écran semi-conducteur externe (5) entourant ladite isolation, constitués l'un et l'autre en une matrice polymérique qui est choisie de même nature que ladite isolation, contient une charge conductrice et est non réticulée.
- Câble selon la revendication 4, caractérisé en ce que ladite matrice polymérique contient un taux massique de styrène compris entre 0,1 et 20 %.
- Câble selon la revendication 5, caractérisé en ce que ladite matrice polymérique contient un taux massique de styrène compris entre 1 et 10 %.
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 |
---|---|---|---|
FR0002324A FR2805656B1 (fr) | 2000-02-24 | 2000-02-24 | Cable d'energie haute et tres haute tension a courant continu |
FR0002324 | 2000-02-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1128395A1 EP1128395A1 (fr) | 2001-08-29 |
EP1128395B1 true EP1128395B1 (fr) | 2004-06-30 |
Family
ID=8847355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01400363A Expired - Lifetime EP1128395B1 (fr) | 2000-02-24 | 2001-02-12 | Câble d'énergie haute et très haute tension à courant continu |
Country Status (7)
Country | Link |
---|---|
US (1) | US6509527B2 (fr) |
EP (1) | EP1128395B1 (fr) |
JP (1) | JP4986331B2 (fr) |
AT (1) | ATE270460T1 (fr) |
DE (1) | DE60104029T2 (fr) |
DK (1) | DK1128395T3 (fr) |
FR (1) | FR2805656B1 (fr) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE0001123L (sv) * | 2000-03-30 | 2001-10-01 | Abb Ab | Kraftkabel |
SE0001748D0 (sv) * | 2000-03-30 | 2000-05-12 | Abb Ab | Induktionslindning |
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 |
FR2932604B1 (fr) | 2008-06-11 | 2010-05-28 | Nexans | Cable electrique a haute tension |
KR20110094341A (ko) | 2008-12-17 | 2011-08-23 | 에이비비 테크놀로지 아게 | 고전압용 dc 케이블 |
EP2312591B1 (fr) * | 2009-08-31 | 2020-03-04 | Nexans | Barrière métallique contre l'humidité résistant à la fatigue dans un câble d'alimentation sous-marin |
EP3098244B2 (fr) | 2009-11-11 | 2023-06-28 | Borealis AG | Composition de polymère réticulable et câble avec des propriétés électriques avantageuses |
EA022362B1 (ru) * | 2009-11-11 | 2015-12-30 | Бореалис Аг | Силовой кабель, способ его получения и применение полимерной композиции, содержащей полиолефин |
WO2011057927A1 (fr) | 2009-11-11 | 2011-05-19 | Borealis Ag | Composition polymere et cable electrique comprenant la composition polymere |
WO2011057925A1 (fr) | 2009-11-11 | 2011-05-19 | Borealis Ag | Cable et son procede de production |
BR112012023374B1 (pt) | 2010-03-17 | 2020-06-09 | Borealis Ag | cabo de alimentação, processo para a produção, composição polimérica e uso da mesma |
WO2011113685A1 (fr) * | 2010-03-17 | 2011-09-22 | Borealis Ag | Composition polymère pour application w&c à propriétés électriques avantageuses |
ES2667488T3 (es) * | 2010-06-10 | 2018-05-11 | Borealis Ag | Nueva composición y uso de la misma |
ES2750266T3 (es) | 2010-11-03 | 2020-03-25 | Borealis Ag | Una composición de polímero y un cable de alimentación que comprende la composición de polímero |
CA2836773A1 (fr) * | 2011-05-04 | 2012-11-08 | Borealis Ag | Composition polymere pour dispositifs electriques |
CN107001729A (zh) * | 2014-10-27 | 2017-08-01 | 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 |
WO2016066619A1 (fr) * | 2014-10-27 | 2016-05-06 | Borealis Ag | Composition polymère pour des applications de câbles présentant des propriétés électriques avantageuses |
CN107207658B (zh) * | 2014-12-19 | 2022-11-01 | 博里利斯股份公司 | 用于w&c应用的具有有利电性能的聚合物组合物 |
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US3684821A (en) * | 1971-03-30 | 1972-08-15 | Sumitomo Electric Industries | High voltage insulated electric cable having outer semiconductive layer |
GB1470501A (en) * | 1973-03-20 | 1977-04-14 | Raychem Ltd | Polymer compositions for electrical use |
US4060659A (en) * | 1975-11-07 | 1977-11-29 | Sumitomo Electric Industries, Ltd. | Electric wires or cables with styrene containing dielectric layer |
JPS5662846A (en) * | 1979-10-29 | 1981-05-29 | Mitsubishi Petrochem Co Ltd | Semiconductive resin composition |
CA1281469C (fr) * | 1984-08-14 | 1991-03-12 | Yoshioki Shingo | Composition resistant a l'embrasement, et cable qui en fait usage |
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JPH02145633A (ja) * | 1988-11-25 | 1990-06-05 | Nippon Unicar Co Ltd | 難燃性ポリオレフィン系樹脂組成物 |
JP2863192B2 (ja) * | 1989-04-19 | 1999-03-03 | ハイピリオン・カタリシス・インターナシヨナル・インコーポレイテツド | 熱可塑性エラストマー組成物 |
WO1992017995A1 (fr) * | 1991-04-02 | 1992-10-15 | Alcatel Cable | Materiau pour ecran semi-conducteur |
EP0513731A1 (fr) * | 1991-05-13 | 1992-11-19 | Alcatel Cable | Matériau synthétique d'isolation électrique pour câble d'énergie à haute tension |
US5225495A (en) * | 1991-07-10 | 1993-07-06 | Richard C. Stewart, II | Conductive polymer film formation using initiator pretreatment |
US5561185A (en) * | 1993-11-12 | 1996-10-01 | The Furukawa Electric Co., Ltd. | Fire-retardant resin composition and a covered electric wire |
EP0690458A3 (fr) * | 1994-06-27 | 1997-01-29 | Mitsubishi Cable Ind Ltd | Composition isolante et articles formés |
JPH0812823A (ja) * | 1994-07-01 | 1996-01-16 | Mitsubishi Cable Ind Ltd | 電気絶縁性組成物 |
US5889117A (en) * | 1995-03-20 | 1999-03-30 | Bicc Cables Corporation | Polymeric compositions for power cables |
US5747559A (en) * | 1995-11-22 | 1998-05-05 | Cabot Corporation | Polymeric compositions |
US5994450A (en) * | 1996-07-01 | 1999-11-30 | Teksource, Lc | Gelatinous elastomer and methods of making and using the same and articles made therefrom |
JPH09245521A (ja) * | 1996-03-08 | 1997-09-19 | Showa Electric Wire & Cable Co Ltd | 樹脂組成物および直流用電力ケーブル |
JPH103823A (ja) * | 1996-06-14 | 1998-01-06 | Fujikura Ltd | 直流架橋ポリエチレン絶縁電力ケーブル |
JP3428388B2 (ja) * | 1997-09-05 | 2003-07-22 | 日立電線株式会社 | 直流用ケーブル |
JPH10182748A (ja) * | 1997-12-08 | 1998-07-07 | Mitsui Chem Inc | 電気絶縁体用エチレン・芳香族ビニル化合物共重合体、電気絶縁体用組成物、これらからなる電線用被覆材および電線 |
JPH11176250A (ja) * | 1997-12-12 | 1999-07-02 | Furukawa Electric Co Ltd:The | 直流電力ケーブル |
JP3858511B2 (ja) * | 1999-04-02 | 2006-12-13 | 日立電線株式会社 | 電線・ケーブル |
JP2000294037A (ja) * | 1999-04-09 | 2000-10-20 | Hitachi Cable Ltd | 電気絶縁組成物及び電線・ケーブル |
-
2000
- 2000-02-24 FR FR0002324A patent/FR2805656B1/fr not_active Expired - Fee Related
-
2001
- 2001-02-12 EP EP01400363A patent/EP1128395B1/fr not_active Expired - Lifetime
- 2001-02-12 DK DK01400363T patent/DK1128395T3/da active
- 2001-02-12 AT AT01400363T patent/ATE270460T1/de not_active IP Right Cessation
- 2001-02-12 DE DE60104029T patent/DE60104029T2/de not_active Expired - Lifetime
- 2001-02-16 JP JP2001039391A patent/JP4986331B2/ja not_active Expired - Fee Related
- 2001-02-22 US US09/789,824 patent/US6509527B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2805656A1 (fr) | 2001-08-31 |
JP2001307564A (ja) | 2001-11-02 |
ATE270460T1 (de) | 2004-07-15 |
US6509527B2 (en) | 2003-01-21 |
FR2805656B1 (fr) | 2002-05-03 |
US20010030053A1 (en) | 2001-10-18 |
EP1128395A1 (fr) | 2001-08-29 |
JP4986331B2 (ja) | 2012-07-25 |
DK1128395T3 (da) | 2004-11-15 |
DE60104029T2 (de) | 2004-10-28 |
DE60104029D1 (de) | 2004-08-05 |
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