SE1600018A1 - Double armored high voltage power cable - Google Patents

Double armored high voltage power cable Download PDF

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Publication number
SE1600018A1
SE1600018A1 SE1600018A SE1600018A SE1600018A1 SE 1600018 A1 SE1600018 A1 SE 1600018A1 SE 1600018 A SE1600018 A SE 1600018A SE 1600018 A SE1600018 A SE 1600018A SE 1600018 A1 SE1600018 A1 SE 1600018A1
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Sweden
Prior art keywords
rst
armor
high voltage
power cable
voltage power
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SE1600018A
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Swedish (sv)
Inventor
Flemming Krogh
Peter Friberg
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Abb Technology Ltd
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Priority to SE1600018A priority Critical patent/SE1600018A1/en
Publication of SE1600018A1 publication Critical patent/SE1600018A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

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Abstract

DOUBLE ARMOURED HIGH VOLTAGE POWER CABLE. The present disclosure relates to a high voltage power cable () comprising a first conductor (a), a first insulation system (a) arranged around the first conductor (a), a first armour layer () arranged around the first insulation system (a), which first armour layer () comprises first armour wires (a) made of metal and second armour wires (ib) made of plastic, a second armour layer () arranged around the first armour layer (), which second armour layer () comprises third armour wires (a) made of metal and fourth armour wires (b) made of plastic, and an outer sheath () arranged around the second armour layer ().(Fig.)

Description

15 20 25 armour layer, which second armour layer comprises third armour wires made of metal and fourth armour wires made of plastic, and an outer sheath arranged around the second armour layer. 15 20 25 armor layer, which second armor layer comprises third armor wires made of metal and fourth armor wires made of plastic, and an outer sheath arranged around the second armor layer.

Since some of the armour wires, i.e. the second armour wires and the fourth armour wires are made of plastic, the total weight of the double armour- layered high voltage power cable is reduced, while a higher mechanical strength can be provided than what is possible with a single armour layer cable. Moreover, since plastic is generally cheaper than steel, the cost of the high voltage power cable may be reduced.Since some of the armor wires, i.e. the second armor wires and the fourth armor wires are made of plastic, the total weight of the double armor- layered high voltage power cable is reduced, while a higher mechanical strength can be provided than what is possible with a single armor layer cable. Moreover, since plastic is generally cheaper than steel, the cost of the high voltage power cable may be reduced.

According to one embodiment in any cross-section the ?rst armour wires and the second armour wires are arranged alternatingly in the tangential direction. To this end, the ?rst armour wires and the second armour wires are arranged alternatingly in the circumferential direction.According to one embodiment in any cross-section the? First armor wires and the second armor wires are arranged alternately in the tangential direction. To this end, the? First armor wires and the second armor wires are arranged alternately in the circumferential direction.

According to one embodiment in any cross-section the third armour wires and the fourth armour wires are arranged alternatingly in the tangential direction. To this end, the third armour wires and the fourth armour wires are arranged alternatingly in the circumferential direction.According to one embodiment in any cross-section the third armor wires and the fourth armor wires are arranged alternately in the tangential direction. To this end, the third armor wires and the fourth armor wires are arranged alternately in the circumferential direction.

According to one embodiment the ?rst amour wires are made of one of galvanised steel and stainless steel.According to one embodiment the? Rst amour wires are made of one of galvanized steel and stainless steel.

According to one embodiment the third armour wires are made of one of galvanised steel and stainless steel.According to one embodiment the third armor wires are made of one of galvanized steel and stainless steel.

According to one embodiment the second armour wires are made of a polymer material.According to one embodiment the second armor wires are made of a polymer material.

According to one embodiment the fourth armour wires are made of a polymer material.According to one embodiment the fourth armor wires are made of a polymer material.

According to one embodiment the ?rst conductor and ?rst insulation system forms part of a ?rst core, and wherein the high voltage power cable comprises: a second conductor, a second insulation system arranged around 10 15 20 25 30 the second conductor, which second conductor and second insulation system form part of a second core, a third conductor, a third insulation system arranged around the third conductor, which third conductor and third insulation system form part of a third core, a ?rst ?ller arranged between the ?rst core and the second core, a second ?ller arranged between the ?rst core and the third core, a third ?ller arranged between the second core and the third core, wherein the ?rst armour layer is arranged around the ?rst core, the second core and the third core and around the ?rst ?ller, the second ?ller and the third ?ller.According to one embodiment the? Rst conductor and? Rst insulation system forms part of a? Rst core, and wherein the high voltage power cable comprises: a second conductor, a second insulation system arranged around 10 15 20 25 30 the second conductor, which second conductor and second insulation system form part of a second core, a third conductor, a third insulation system arranged around the third conductor, which third conductor and third insulation system form part of a third core, a? rst? ller arranged between the? rst core and the second core, a second? ller arranged between the? rst core and the third core, a third? ller arranged between the second core and the third core, wherein the? rst armor layer is arranged around the? rst core, the second core and the third core and around the? rst? ller, the second? ller and the third?

According to one embodiment the ?rst armour wires and the second armour wires are arranged helically along the axial direction of the high voltage power cable.According to one embodiment the? Rst armor wires and the second armor wires are arranged helically along the axial direction of the high voltage power cable.

According to one embodiment the third amour wires and the fourth armour wires are arranged helically along the axial direction of the high voltage power cable.According to one embodiment the third amor wires and the fourth armor wires are arranged helically along the axial direction of the high voltage power cable.

The ?rst armour wires and second armour wires of the ?rst armour layer are arranged helically in a ?rst direction while the third armour wires and fourth armour wires of the second armour layer are arranged helically in a second direction. The ?rst armour layer and the second armour layer are hence oppositely helically arranged. In this manner the high voltage power cable becomes torque balanced.The first armor wires and second armor wires of the first armor layer are arranged helically in a first direction while the third armor wires and fourth armor wires of the second armor layer are arranged helically in a second direction. The first armor layer and the second armor layer are hence oppositely helically arranged. In this manner the high voltage power cable becomes torque balanced.

Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical ?eld, unless explicitly de?ned otherwise herein.Al1references to "a/an/the element, apparatus, component, means, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, etc., unless explicitly stated otherwise.Generally, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical? Eld, unless explicitly de? Ned otherwise herein.Al1references to "a / an / the element, apparatus, component, means, etc. are to be interpreted openly as referring to at least one instance of the element, apparatus, component, means, etc., unless explicitly stated otherwise.

BRIEF DESCRIPTION OF THE DRAWINGS The specific embodiments of the inventive concept will now be described, by way of example, with reference to the accompanying drawings, in which: 10 15 20 25 Fig. 1 shows a cross-section of an example of a high voltage power cable.BRIEF DESCRIPTION OF THE DRAWINGS The specific embodiments of the inventive concept will now be described, by way of example, with reference to the accompanying drawings, in which: 10 15 20 25 Fig. 1 shows a cross-section of an example of a high voltage power cable.

DETAILED DESCRIPTION The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplifying embodiments are shown. The inventive concept may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.DETAILED DESCRIPTION The inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplifying embodiments are shown. The inventive concept may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art.

Like numbers refer to like elements throughout the description.Like numbers refer to like elements throughout the description.

The present disclosure relates to a high voltage power cable having two armour wire layers. The high voltage power cable may be an alternating current (AC) high voltage power cable or a direct current (DC) high voltage power cable.The present disclosure relates to a high voltage power cable having two armor wire layers. The high voltage power cable may be an alternating current (AC) high voltage power cable or a direct current (DC) high voltage power cable.

In general, the high voltage power cable comprises a ?rst conductor, a ?rst insulation system arranged around the ?rst conductor, a ?rst armour layer surrounding the ?rst insulation system and a second armour layer surrounding the ?rst armour layer.In general, the high voltage power cable comprises a? Rst conductor, a? Rst insulation system arranged around the? Rst conductor, a? Rst armor layer surrounding the? Rst insulation system and a second armor layer surrounding the? Rst armor layer.

The ?rst conductor and the ?rst insulation system layer are concentrically or essentially concentrically arranged. The ?rst insulation system may for example comprise two semiconducting layer, for example XLPE layers comprising carbon black, and an XLPE layer sandwiched between the two semiconducting layers.The first conductor and the first insulation system layer are concentrically or essentially concentrically arranged. The first insulation system may for example comprise two semiconducting layers, for example XLPE layers comprising carbon black, and an XLPE layer sandwiched between the two semiconducting layers.

The ?rst conductor and the insulation system forms part of a ?rst core of the high voltage power cable. The high voltage power cable may comprise more than one core depending on the number of electrical phases and whether the high Voltage power cable is for AC use or DC use. In case of several cores, each conductor is surrounded by a respective insulation system in the same manner as described above, thereby forming part of a respective core. 10 15 20 25 With reference to Fig. 1, an example of a high voltage power cable will now be described. The exempli?ed high voltage power cable 1 comprises three cores.The first conductor and the insulation system forms part of the first core of the high voltage power cable. The high voltage power cable may comprise more than one core depending on the number of electrical phases and whether the high voltage power cable is for AC use or DC use. In case of several cores, each conductor is surrounded by a respective insulation system in the same manner as described above, thereby forming part of a respective core. 10 15 20 25 With reference to Fig. 1, an example of a high voltage power cable will now be described. The exempli? Ed high voltage power cable 1 comprises three cores.

The high voltage power cable 1 comprises a ?rst core 3a, a second core 3b and a third core 3c.The high voltage power cable 1 comprises a? Core core 3a, a second core 3b and a third core 3c.

The ?rst core 3a comprises a ?rst conductor 5a and a ?rst insulation system 7a. The ?rst insulation system 7a is arranged around the ?rst conductor 5a.The first core 3a comprises first conductor 5a and first insulation system 7a. The first insulation system 7a is arranged around the first conductor 5a.

The second core 3b comprises a second conductor 5b, and a second insulation system 7b arranged around the second conductor 5b.The second core 3b comprises a second conductor 5b, and a second insulation system 7b arranged around the second conductor 5b.

The third core 3c comprises a third conductor 5c, and a third insulation system 7c arranged around the third conductor 5c.The third core 3c comprises a third conductor 5c, and a third insulation system 7c arranged around the third conductor 5c.

The exempli?ed high voltage power cable 1 furthermore includes three ?llers 9a, 9b and 9c.The exempli? Ed high voltage power cable 1 furthermore includes three? Llers 9a, 9b and 9c.

Moreover, the high voltage power cable 1 comprises a ?rst armour layer 11, which is an innermost armour layer, arranged around the ?rst core 3a, the second core 3b and the third core 3c, as well as around the three ?llers 9a-9c.Moreover, the high voltage power cable 1 comprises a? Rst armor layer 11, which is an innermost armor layer, arranged around the? Rst core 3a, the second core 3b and the third core 3c, as well as around the three? Llers 9a -9c.

The three cores 3a-3c and the three ?llers 9a-9c will with a common name in the following be referred to as the interior components of the high voltage power cable 1.The three cores 3a-3c and the three? Llers 9a-9c will with a common name in the following be referred to as the interior components of the high voltage power cable 1.

The high voltage power cable 1 also has a second armour layer 13, an outer armour layer, arranged around the ?rst armour layer 11, and an outer sheath 15 arranged around the second armour layer 13. The ?rst armour layer 11 and the second armour layer 13 are concentrically arranged.The high voltage power cable 1 also has a second armor layer 13, an outer armor layer, arranged around the? Rst armor layer 11, and an outer sheath 15 arranged around the second armor layer 13. The? Rst armor layer 11 and the second armor layer 13 are concentrically arranged.

Each ?ller 9a-9c is designed to ?ll a space between two adjacent cores 3a, 3b, 3c and the ?rst armour layer 11. To this end, a ?rst ?ller 9a is arranged between the ?rst core 3a and the second core 3b, a second ?ller 9b is arranged between the second core 3b and the third core 3c, and a third ?ller 9c is arranged between the first core 3a and the third core 3c. 10 15 20 25 The ?rst armour layer 11 includes a plurality of armour wires, generally arranged in a helical manner around the interior components 3a-3b, 9a-9c of the high voltage power cable 1. The ?rst armour layer 11 in particular includes ?rst armour wires 11a made of metal, such as steel e.g. stainless steel or galvanised steel. The ?rst armour wires 11a are in Fig. 1 shown with light circles.Each 9a-9c is designed to provide a space between two adjacent cores 3a, 3b, 3c and the first armor layer 11. To this end, 9a is arranged between the first core 3a and the second core 3b, a second? ller 9b is arranged between the second core 3b and the third core 3c, and a third? ller 9c is arranged between the first core 3a and the third core 3c. 10 15 20 25 The? Rst armor layer 11 includes a plurality of armor wires, generally arranged in a helical manner around the interior components 3a-3b, 9a-9c of the high voltage power cable 1. The? Rst armor layer 11 in particular includes? rst armor wires 11a made of metal, such as steel eg stainless steel or galvanized steel. The first armor wires 11a are shown in Fig. 1 with light circles.

The ?rst armour layer 11 also includes second armour wires 11b made of plastic, e.g. a polymer material. The second armour wires 11b are illustrated in Fig. 1 with dark circles.The first armor layer 11 also includes second armor wires 11b made of plastic, e.g. a polymeric material. The second armor wires 11b are illustrated in Fig. 1 with dark circles.

The second armour layer 13 includes a plurality of armour wires, generally arranged in a helical manner around the ?rst armour layer 11. The second armour layer 13 in particular includes third armour wires 13a made of metal, such as steel e. g. stainless steel or galvanised steel. The third armour wires 13a are in Fig. 1 shown with light circles.The second armor layer 13 includes a plurality of armor wires, generally arranged in a helical manner around the? Rst armor layer 11. The second armor layer 13 in particular includes third armor wires 13a made of metal, such as steel eg stainless steel or galvanized steel. The third armor wires 13a are shown in Fig. 1 with light circles.

The second armour layer 13 also includes fourth armour wires 13b made of plastic, e.g. a polymer material. The fourth armour wires 13b are illustrated in F ig. 1 with dark circles.The second armor layer 13 also includes fourth armor wires 13b made of plastic, e.g. a polymeric material. The fourth armor wires 13b are illustrated in F ig. 1 with dark circles.

An example of a polymeric material suitable for the second armour wires is polyethylene such as low density, medium density or high density polyethylene. The polymeric wires could alternatively be made of semiconducting material such as polyethylene mixed with carbon black.An example of a polymeric material suitable for the second armor wires is polyethylene such as low density, medium density or high density polyethylene. The polymeric wires could alternatively be made of semiconducting material such as polyethylene mixed with carbon black.

According to the example in Fig. 1, in any cross section of the high voltage power cable 1, the first armour wires 11a and the second armour wires 11b are arranged in an alternating manner around the circumference formed by the arrangement of the interior components 3a-3c, 9a-9c. Hereto, the ?rst armour wires 11a and the second armour vvires 11b are arranged alternatingly in the tangential direction. Every other armour wire in the ?rst armour layer 11 is hence made of metal, and arranged between each pair of adjacent ?rst armour wire 11a is hence arranged a second armour wire 11b. 10 15 20 According to another example, there may be several subsequent adjacent ?rst armour wires without any second armour wire arranged therebetween. To this end, there may be several adjacent ?rst armour wires followed by several adjacent second armour wires.According to the example in Fig. 1, in any cross section of the high voltage power cable 1, the first armor wires 11a and the second armor wires 11b are arranged in an alternating manner around the circumference formed by the arrangement of the interior components 3a -3c, 9a-9c. Hereto, the? Rst armor wires 11a and the second armor vvires 11b are arranged alternatingly in the tangential direction. Every other armor wire in the first armor layer 11 is hence made of metal, and arranged between each pair of adjacent first armor wire 11a is hence arranged a second armor wire 11b. 10 15 20 According to another example, there may be several subsequent adjacent armor wires without any second armor wire arranged therebetween. To this end, there may be several adjacent? Arst armor wires followed by several adjacent second armor wires.

Moreover, according to the example in cross-section the third armour wires 13a and the fourth armour wires 13b are arranged in an alternating manner around the circumference formed by the arrangement of the interior components 3a-3c, 9a-9c. To this end, the third armour wires 13a and the fourth armour wires 13b are arranged alternatingly in the tangential direction. Every other armour wire in the second armour layer 13 is hence made of metal, and arranged between each pair of adjacent third armour wire 13a is hence arranged a fourth armour wire 13b.Moreover, according to the example in cross-section the third armor wires 13a and the fourth armor wires 13b are arranged in an alternating manner around the circumference formed by the arrangement of the interior components 3a-3c, 9a-9c. To this end, the third armor wires 13a and the fourth armor wires 13b are arranged alternately in the tangential direction. Every other armor wire in the second armor layer 13 is hence made of metal, and arranged between each pair of adjacent third armor wire 13a is hence arranged a fourth armor wire 13b.

According to another example, there may be several subsequent adjacent third armour wires without any fourth armour wire arranged therebetween.According to another example, there may be several subsequent adjacent third armor wires without any fourth armor wire arranged therebetween.

To this end, there may be several adjacent third armour wires followed by several adjacent fourth armour wires.To this end, there may be several adjacent third armor wires followed by several adjacent fourth armor wires.

The high voltage power cable disclosed herein may for example be a submarine power cable or a land cable.The high voltage power cable disclosed herein may for example be a submarine power cable or a land cable.

The inventive concept has mainly been described above with reference to a few examples. However, as is readily appreciated by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the inventive concept, as deñned by the appended claims.The inventive concept has mainly been described above with reference to a few examples. However, as is readily appreciated by a person skilled in the art, other embodiments than the ones disclosed above are equally possible within the scope of the inventive concept, as deñned by the appended claims.

Claims (10)

10 15 20 25 CLAIMS10 15 20 25 CLAIMS 1. A high voltage power cable (1) comprising: a ?rst conductor (5a), a ?rst insulation system (7a) arranged around the ?rst conductor (5a), a ?rst armour layer (11) arranged around the ?rst insulation system (7a), which ?rst armour layer (11) comprises ?rst armour wires (11a) made of metal and second armour wires (11b) made of plastic, a second armour layer (13) arranged around the ?rst armour layer (11), which second armour layer (13) comprises third armour wires (13a) made of metal and fourth armour wires (13b) made of plastic, and an outer sheath (15) arranged around the second armour layer (13).A high voltage power cable (1) comprising: a? Rst conductor (5a), a? Rst insulation system (7a) arranged around the? Rst conductor (5a), a? Rst armor layer (11) arranged around the? rst insulation system (7a), which? rst armor layer (11) comprises? rst armor wires (11a) made of metal and second armor wires (11b) made of plastic, a second armor layer (13) arranged around the? rst armor layer (11), which second armor layer (13) comprises third armor wires (13a) made of metal and fourth armor wires (13b) made of plastic, and an outer sheath (15) arranged around the second armor layer (13). 2. The high voltage power cable (1) as claimed in claim 1, wherein in any cross-section the ?rst armour wires (11a) and the second armour wires (11b) are arranged alternatingly in the tangential direction.2. The high voltage power cable (1) as claimed in claim 1, wherein in any cross-section the? Rst armor wires (11a) and the second armor wires (11b) are arranged alternately in the tangential direction. 3. The high voltage power cable (1) as claimed in claim 1 or 2, wherein in any cross-section the third armour wires (13a) and the fourth armour wires (13b) are arranged alternatingly in the tangential direction.The high voltage power cable (1) as claimed in claim 1 or 2, wherein in any cross-section the third armor wires (13a) and the fourth armor wires (13b) are arranged alternately in the tangential direction. 4. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the ?rst amour wires (11a) are made of one of galvanised steel and stainless steel.4. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the? Rst amour wires (11a) are made of one of galvanized steel and stainless steel. 5. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the third armour wires (13a) are made of one of galvanised steel and stainless steel.5. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the third armor wires (13a) are made of one of galvanized steel and stainless steel. 6. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the second armour wires (11b) are made of a polymer material. 10 15 20 256. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the second armor wires (11b) are made of a polymer material. 10 15 20 25 7. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the fourth armour wires (13b) are made of a polymer material.7. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the fourth armor wires (13b) are made of a polymer material. 8. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the ?rst conductor (5a) and ?rst insulation system (7a) forms part of a ?rst core (3a), and wherein the high voltage power cable (1) comprises: a second conductor (5b), a second insulation system (7b) arranged around the second conductor (5b), which second conductor (5b) and second insulation system (7b) form part of a second core (3b), a third conductor (5c), a third insulation system (7c) arranged around the third conductor (5c), which third conductor (5c) and third insulation system (7c) form part of a third core (3c), a ?rst ?ller (9a) arranged between the ?rst core (3a) and the second core (30), a second ?ller (9c) arranged between the ?rst core (3a) and the third core (3c), a third ?ller (9b) arranged between the second core (3b) and the third core (3c), wherein the ?rst armour layer (11) is arranged around the ?rst core (3a), the second core (3b) and the third core (3c) and around the ?rst ?ller (9a), the second ?ller (9c) and the third ?ller (9b).8. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the? Rst conductor (5a) and? Rst insulation system (7a) forms part of a? Rst core (3a), and wherein the high voltage power cable (1) comprises: a second conductor (5b), a second insulation system (7b) arranged around the second conductor (5b), which second conductor (5b) and second insulation system (7b) form part of a second core (3b), a third conductor (5c), a third insulation system (7c) arranged around the third conductor (5c), which third conductor (5c) and third insulation system (7c) form part of a third core (3c), a? rst? ller (9a) arranged between the? rst core (3a) and the second core (30), a second? ller (9c) arranged between the? rst core (3a) and the third core (3c), a third? ller (9b) arranged between the second core (3b) and the third core (3c), wherein the? rst armor layer (11) is arranged around the? rst core (3a), the second core (3b) and the third core (3c) and around the? rst? ll er (9a), the second? ller (9c) and the third? ller (9b). 9. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the ?rst armour wires (11a) and the second armour wires 10 (11b) are arranged helically along the axial direction of the high voltage power cable (1).9. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the? Rst armor wires (11a) and the second armor wires 10 (11b) are arranged helically along the axial direction of the high voltage power cable (1). 10. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the third amour wires (13a) and the fourth armour wires (13b) are arranged helically along the axial direction of the high voltage power cable (1).10. The high voltage power cable (1) as claimed in any of the preceding claims, wherein the third amor wires (13a) and the fourth armor wires (13b) are arranged helically along the axial direction of the high voltage power cable (1 ).
SE1600018A 2016-01-22 2016-01-22 Double armored high voltage power cable SE1600018A1 (en)

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