CN210271846U - AC/DC hybrid submarine cable for offshore wind power - Google Patents
AC/DC hybrid submarine cable for offshore wind power Download PDFInfo
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- CN210271846U CN210271846U CN201920771809.2U CN201920771809U CN210271846U CN 210271846 U CN210271846 U CN 210271846U CN 201920771809 U CN201920771809 U CN 201920771809U CN 210271846 U CN210271846 U CN 210271846U
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- submarine cable
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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
- H01B7/14—Submarine cables
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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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses an AC/DC hybrid submarine cable for offshore wind power, which comprises an AC submarine cable, two DC submarine cables, a filling layer, an inner liner, an armor layer and an outer tegument; the alternating current submarine cable and the two direct current submarine cables are twisted into a cable to form a three-core structure; the filling layer, the inner liner, the armor layer and the outer tegument layer are sequentially coated on the peripheries of the alternating current submarine cable and the direct current submarine cable. The utility model relates to an alternating current-direct current hybrid submarine cable for offshore wind power, through stranding an alternating current submarine cable and two direct current submarine cables into a hybrid submarine cable, make fan start and direct current get the transmission of electricity and accomplish through a submarine cable, make the submarine cable lay the number of times reduce to once from many times on the one hand, can effectively reduce and lay the cost; on the other hand, the alternating current-direct current hybrid submarine cable is of a round structure, is convenient to produce and lay, and reduces the laying difficulty.
Description
Technical Field
The utility model relates to a marine wind power field especially relates to a mixed submarine cable of alternating current-direct current for marine wind power.
Background
With the development of offshore wind power from offshore to offshore, an alternating current submarine cable (array cable) is generally adopted to collect electric energy from a fan, then medium-high voltage alternating current is converted into high-voltage alternating current through a booster station, the high-voltage alternating current submarine cable is adopted to output electric energy, then the high-voltage alternating current is converted into high-voltage direct current through a converter station, and finally the direct current submarine cable outputs the electric energy. The power-off transmission mode needs to establish a plurality of submarine cable alternating current converter stations, and has the advantages of long construction period, high cost, fussy later-period maintenance and high maintenance cost. And a scheme for directly taking power from the fan by direct current is developed later, an alternating current power conversion link is omitted, the direct current submarine cables are directly adopted for transmitting electric energy, the cost of the alternating current converter station is saved, the alternating current submarine cables and the two direct current submarine cables need to be laid separately, on one hand, the laying cost is still high for two times, on the other hand, the two direct current submarine cables are laid, a round appearance structure cannot be formed between the two submarine cables, and the laying technical difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a mixed submarine cable of alternating current-direct current for marine wind power, can solve current wind-powered electricity generation by the offshore to the above-mentioned problem that the open sea development exists.
In order to solve the technical problem, the utility model discloses a technical scheme be: the alternating current-direct current hybrid submarine cable for offshore wind power comprises an alternating current submarine cable, two direct current submarine cables, a filling layer, an inner lining layer, an armor layer and an outer lining layer; the alternating current submarine cable and the two direct current submarine cables are twisted into a cable to form a three-core structure; the filling layer, the inner liner, the armor layer and the outer tegument layer are sequentially coated on the peripheries of the alternating current submarine cable and the direct current submarine cable.
In a preferred embodiment of the present invention, the diameter of the ac sea cable is the same as the diameter of the dc sea cable.
In a preferred embodiment of the present invention, the ac submarine cable is a three-core ac submarine cable.
In a preferred embodiment of the present invention, the structure of the three-core ac submarine cable sequentially comprises: the cable comprises a first conductor, a first conductor shielding layer, a first insulating shielding layer, a first metal shielding layer and a first outer sheath layer.
In a preferred embodiment of the present invention, the first metal shielding layer includes a semi-conductive water-blocking tape and a lead alloy sheath, and the lead alloy sheath is wrapped around the semi-conductive water-blocking tape.
In a preferred embodiment of the present invention, the first insulating layer is a water-resistant resin type insulating material, and the first metal shielding layer includes a copper strip/copper wire shielding layer and an aluminum-plastic composite strip; the aluminum-plastic composite belt is coated on the periphery of the copper belt/copper wire shielding layer.
In a preferred embodiment of the present invention, the structure of the dc submarine cable sequentially comprises from inside to outside: the second conductor, the second conductor shielding layer, the second insulating shielding layer, the water-blocking tape, the second metal shielding layer and the second outer sheath.
In a preferred embodiment of the present invention, the ac/dc hybrid submarine cable further comprises an optical cable, and the optical cable is embedded in the filling layer.
In a preferred embodiment of the present invention, the ac/dc hybrid submarine cable further includes a rubberized fabric layer, and the rubberized fabric layer is coated on the periphery of the filling layer.
In a preferred embodiment of the present invention, the ac/dc hybrid submarine cable further includes a non-woven fabric layer, and the non-woven fabric layer is wrapped around the rubberized fabric layer.
The utility model has the advantages that: the utility model relates to an alternating current-direct current hybrid submarine cable for offshore wind power, through stranding an alternating current submarine cable and two direct current submarine cables into a hybrid submarine cable, make fan start and direct current get the transmission of electricity and accomplish through a submarine cable, make the submarine cable lay the number of times reduce to once from many times on the one hand, can effectively reduce and lay the cost; on the other hand does not need to exchange the submarine cable booster station, and then has saved the cost of booster station, and the mixed submarine cable of alternating current-direct current is round structure, and production and lay conveniently reduce the degree of difficulty of laying.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of an ac/dc hybrid submarine cable for offshore wind power according to the present invention;
the parts in the drawings are numbered as follows: 1. the cable comprises a first conductor, 2, a first conductor shielding layer, 3, a first insulating layer, 4, a first insulating shielding layer, 5, a first metal shielding layer, 6, a first outer sheath layer, 7, a second conductor, 8, a second conductor shielding layer, 9, a second insulating layer, 10, a second insulating shielding layer, 11, a water-blocking tape, 12, a second metal shielding layer, 13, a second outer sheath, 14, an optical fiber, 15, a filling layer, 16, a rubberized fabric layer, 17, a non-woven fabric layer, 18, an inner lining layer, 19, an armor layer and 20, an outer covering layer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1, an embodiment of the present invention includes:
example 1
The utility model discloses an AC/DC hybrid submarine cable for offshore wind power, which comprises an AC submarine cable and two DC submarine cables; the alternating current submarine cable and the two direct current submarine cables are twisted to form a three-core structure, a filling layer 15 is arranged outside the alternating current submarine cable and the direct current submarine cables, and the periphery of the filling layer 15 is sequentially coated with a rubberized fabric layer 16, a non-woven fabric layer 17, an inner liner layer 18, an armor layer 19 and a tegument layer 20. The rubberized fabric layer 16 and the non-woven fabric layer 17 bind the alternating current submarine cable and the direct current submarine cable together to form a cable.
The diameter of the alternating current submarine cable is the same as that of the direct current submarine cable, so that the alternating current and direct current hybrid submarine cable after cabling forms a round structure, and the requirements of submarine cable transportation and laying are met.
Specifically, exchange submarine cable is three-core and exchanges submarine cable, and its structure includes from inside to outside in proper order: the cable comprises a first conductor 1, a first conductor shielding layer 2, a first insulating layer 3, a first insulating shielding layer 4, a first metal shielding layer 5 and a first outer sheath layer 6.
The AC submarine cable is a small-specification submarine cable with a voltage class of 35kV, for example, the specification of the first conductor 1 is 50mm2Or 70mm2And the like for starting the fan.
The first metal shielding layer 5 is different according to the depth of the water area in the use area and the complexity of the laying environment. Specifically, in the area where the water area is relatively shallow and the laying environment is not complicated, the first metal shielding layer 5 uses a copper strip/copper wire shielding layer and an aluminum-plastic composite strip; the aluminum-plastic composite belt is wrapped on the periphery of the copper belt/copper wire shielding layer, and the first insulating layer 3 is made of a water tree-resistant insulating material. The water-resistant tree-shaped insulating material has an excellent water-blocking effect, and can act together with the copper wire/copper strip to improve the ageing resistance of the insulating material after contacting water.
In the region with relatively deep water area and complicated laying environment in the use region, the first metal shielding layer 5 uses a semi-conductive water-blocking tape and a lead alloy sheath, and the lead alloy sheath is coated on the periphery of the semi-conductive water-blocking tape.
The structure of direct current submarine cable includes from inside to outside in proper order: a second conductor 7, a second conductor shield layer 8, a second insulating layer 9, a second insulating shield layer 10, a water-blocking tape 11, a second metal shield layer 12 and a second outer jacket 13. The second conductor shielding layer 8 is a semi-conductive binding water-blocking tape, the water-blocking tape 11 is a semi-conductive water-blocking tape, and the second metal shielding layer 12 is a lead alloy sheath.
The direct current submarine cable is a medium-voltage-class direct current submarine cable, generally adopting 100kV, 80kV and 60kV voltage classes, and the specification of the second conductor 7 is 800mm2、1000mm2、1200mm2、1400mm2And the like in large-scale structures, and are used for directly taking electricity from the fan and transmitting the electricity.
Preferably, the hybrid AC/DC submarine cable further comprises an optical cable 14, and the optical cable 14 is embedded in the filling layer 15. The optical cable is added in the process of cabling the alternating current submarine cable and the direct current submarine cable to manufacture the alternating current and direct current hybrid composite optical fiber submarine cable, and the function of the alternating current and direct current hybrid submarine cable is further improved.
In addition, according to different offshore wind field resources, an alternating current submarine cable and a direct current submarine cable with proper specifications can be selected, and the difference between the diameters of the alternating current submarine cable and the direct current submarine cable is controlled within an error range of 5 mm.
The utility model directly takes direct current from the fan, saves the use of an independent alternating current submarine cable, saves an offshore alternating current booster station and reduces the overall cost of offshore wind power; the alternating current-direct current hybrid submarine cable is adopted to convey electric energy, the number of times of independent laying of the alternating current submarine cable and the direct current submarine cable is reduced, laying cost is reduced, and the overall economy of the project is improved.
The AC-DC hybrid submarine cable for offshore wind power of the utility model enables the starting of the fan and the DC power transmission to be completed through one submarine cable by twisting the AC submarine cable and two DC submarine cables into one hybrid submarine cable, so that the number of laying the submarine cable is reduced from multiple times to one time on one hand, and the laying cost can be effectively reduced; on the other hand does not need to exchange the submarine cable booster station, and then has saved the cost of booster station, and the mixed submarine cable of alternating current-direct current is round structure, and production and lay conveniently reduce the degree of difficulty of laying.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An alternating current and direct current hybrid submarine cable for offshore wind power is characterized by comprising an alternating current submarine cable, two direct current submarine cables, a filling layer, an inner lining layer, an armor layer and an outer coating layer; the alternating current submarine cable and the two direct current submarine cables are twisted into a cable to form a three-core structure; the filling layer, the inner liner, the armor layer and the outer tegument layer are sequentially coated on the peripheries of the alternating current submarine cable and the direct current submarine cable.
2. The hybrid AC/DC submarine cable for offshore wind power according to claim 1, wherein the diameter of the AC submarine cable is the same as the diameter of the DC submarine cable.
3. The hybrid AC/DC submarine cable for offshore wind power according to claim 2, wherein the AC submarine cable is a three-core AC submarine cable.
4. The hybrid AC/DC submarine cable for offshore wind power according to claim 3, wherein the structure of the three-core AC submarine cable comprises, in order from inside to outside: the cable comprises a first conductor, a first conductor shielding layer, a first insulating shielding layer, a first metal shielding layer and a first outer sheath layer.
5. The AC-DC hybrid submarine cable according to claim 4, wherein the first metal shielding layer comprises a semiconductive water-blocking tape and a lead alloy sheath, and the lead alloy sheath is coated on the periphery of the semiconductive water-blocking tape.
6. The AC-DC hybrid submarine cable for offshore wind power according to claim 4, wherein the first insulating shield layer is a water tree-resistant insulating material, and the first metal shield layer comprises a copper strip/copper wire shield layer and an aluminum-plastic composite strip; the aluminum-plastic composite belt is coated on the periphery of the copper belt/copper wire shielding layer.
7. The hybrid AC/DC submarine cable for offshore wind power according to claim 2, wherein the structure of the DC submarine cable comprises, in order from inside to outside: the second conductor, the second conductor shielding layer, the second insulating shielding layer, the water-blocking tape, the second metal shielding layer and the second outer sheath.
8. The hybrid AC/DC submarine cable according to claim 2, further comprising an optical cable embedded in the filler layer.
9. The hybrid AC/DC submarine cable according to claim 8, further comprising a rubberized fabric layer coated on the outer periphery of the filling layer.
10. The hybrid AC/DC submarine cable according to claim 9, further comprising a non-woven fabric layer coated on the outer periphery of the rubberized fabric layer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771809.2U CN210271846U (en) | 2019-05-27 | 2019-05-27 | AC/DC hybrid submarine cable for offshore wind power |
| DE212019000504.7U DE212019000504U1 (en) | 2019-05-27 | 2019-06-11 | An AC/DC hybrid submarine cable for offshore wind power |
| PCT/CN2019/090683 WO2020237723A1 (en) | 2019-05-27 | 2019-06-11 | Alternating-current and direct-current hybrid submarine cable for offshore wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771809.2U CN210271846U (en) | 2019-05-27 | 2019-05-27 | AC/DC hybrid submarine cable for offshore wind power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210271846U true CN210271846U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920771809.2U Active CN210271846U (en) | 2019-05-27 | 2019-05-27 | AC/DC hybrid submarine cable for offshore wind power |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN210271846U (en) |
| DE (1) | DE212019000504U1 (en) |
| WO (1) | WO2020237723A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136874A (en) * | 2019-05-27 | 2019-08-16 | 江苏亨通高压海缆有限公司 | AC/DC hybrid submarine cable for offshore wind power |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007200783A (en) * | 2006-01-27 | 2007-08-09 | Sumitomo Electric Ind Ltd | Multiconductor superconductive cable |
| CN202394580U (en) * | 2011-11-16 | 2012-08-22 | 江苏亨通高压电缆有限公司 | Split-phase lead-coated submarine cable |
| CN202771828U (en) * | 2012-09-27 | 2013-03-06 | 无锡市长城电线电缆有限公司 | Multi-core high voltage and low voltage composite submarine cable |
| CN203165553U (en) * | 2013-02-27 | 2013-08-28 | 宁波东方电缆股份有限公司 | Direct-current submarine cable for flexible transmission |
| AU2014405270B2 (en) * | 2014-09-05 | 2020-07-16 | Prysmian S.P.A. | Submarine electrical cable and submarine cable operation method |
| CN106653183B (en) * | 2017-01-06 | 2018-07-06 | 江苏亨通高压海缆有限公司 | Super-capacity crosslinked polyethylene insulated photoelectric composite submarine cable |
| CN110136874A (en) * | 2019-05-27 | 2019-08-16 | 江苏亨通高压海缆有限公司 | AC/DC hybrid submarine cable for offshore wind power |
-
2019
- 2019-05-27 CN CN201920771809.2U patent/CN210271846U/en active Active
- 2019-06-11 DE DE212019000504.7U patent/DE212019000504U1/en active Active
- 2019-06-11 WO PCT/CN2019/090683 patent/WO2020237723A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136874A (en) * | 2019-05-27 | 2019-08-16 | 江苏亨通高压海缆有限公司 | AC/DC hybrid submarine cable for offshore wind power |
Also Published As
| Publication number | Publication date |
|---|---|
| DE212019000504U1 (en) | 2022-01-07 |
| WO2020237723A1 (en) | 2020-12-03 |
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