CN106448916A - Direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable - Google Patents
Direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable Download PDFInfo
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- CN106448916A CN106448916A CN201611081866.5A CN201611081866A CN106448916A CN 106448916 A CN106448916 A CN 106448916A CN 201611081866 A CN201611081866 A CN 201611081866A CN 106448916 A CN106448916 A CN 106448916A
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- loose tube
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- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 8
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229920003023 plastic Polymers 0.000 claims abstract description 57
- 239000004033 plastic Substances 0.000 claims abstract description 57
- 239000004020 conductor Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000010949 copper Substances 0.000 claims description 50
- 229910052802 copper Inorganic materials 0.000 claims description 50
- 239000000835 fiber Substances 0.000 claims description 46
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 24
- 230000005622 photoelectricity Effects 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 16
- 229920001617 Vinyon Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000005253 cladding Methods 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 239000010426 asphalt Substances 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 229920001179 medium density polyethylene Polymers 0.000 claims description 3
- 239000004701 medium-density polyethylene Substances 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 21
- 239000013307 optical fiber Substances 0.000 abstract description 14
- 239000010410 layer Substances 0.000 abstract 8
- 239000011241 protective layer Substances 0.000 abstract 1
- 238000013461 design Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 4
- 235000011613 Pinus brutia Nutrition 0.000 description 4
- 241000018646 Pinus brutia Species 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000013480 data collection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000206 moulding compound Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- 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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
-
- 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
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable. The cable comprises a conductor, a semiconductive strapping tape, a conductor shielding layer, an insulating layer, an insulating shielding layer, a first semiconductive water-blocking layer, a copper wire shielding layer, a second semiconductive water-blocking layer, a metal plastic composite tape coated comprehensive water-blocking layer and a plastic outer protective layer sequentially from inside to outside, wherein a plurality of high-strength loose tube optical fiber units are arranged in the copper wire shielding layer. The direct-current ultrahigh-voltage crosslinked polyethylene insulated photoelectric composite power cable provided by the invention is suitable for large-scale direct-current electricity transmission power grids and power stations, can perform ultrahigh-voltage (+/- 150 kV to 500 kV) and high-capacity direct-current electricity transmission, and can perform intelligent power grid operating data acquisition and automatic control information transmission on line.
Description
Technical field
The present invention relates to a kind of power cable being exclusively used in direct current transportation.Particularly one kind carries brass wire shielding and optical fiber list
Unit, metal tape indulge bag plus plastic sheath integrated water stop layer power cable.It is applied to large-sized DC transmission of electricity intelligent grid, power station,
The crosslinked polyetylene insulated photoelectricity of ± 150kV～500kV DC ultra-high-voltage of the collection of line service data and control information transmission is combined
Power cable.
Background technology
With the high speed development of State Grid's industry, domestic ± 150kV～500kV supertension, Large Copacity, remote direct current
Transmission of electricity intelligent grid construction project has started to start, and the construction of intelligent grid needs to transmit high-voltage circuit operation on-line checking letter
Number.
Although disclosing a kind of crosslinked polyetylene insulated rustless steel of 750～1100kV extra-high voltage in CN102610320 A
Set photoelectric compound cable, this cable disclosure satisfy that extra-high voltage electric transmission and transformation engineering intelligent powernet optical fiber measurement signal and data are led to
The demand of news it is adaptable to 750～1100kV extra-high voltage electric transmission and transformation system, insulating barrier that its unique crosslinked polyethylene material manufactures,
The design such as shielding layer of copper wires that soft copper silk is made and stainless steel tube sheath, makes cable have excellent mechanical performance and anticorrosion
Performance, higher short-circuit current capability.But this photoelectric compound cable cannot be applied to existing super high voltage direct current electricity transmission intelligence
The construction demand of electrical network.
For adapting to the needs that national super high voltage direct current electricity transmission intelligent grid is built, manufactured and designed one kind ± 150kV～
500kV direct current transportation ultra-high voltage cross-linking polyethylene-insulated power cable and direct current transportation ultra-high voltage cross-linking polyethylene insulation light are replied by cable
Close power cable.
Content of the invention
The present invention provides one kind for country and is applied to large-sized DC power transmission electric network, power station, ± 150kV～500kV superelevation
Pressure, high-capacity direct current transmission of electricity, and intelligent grid service data collection can be carried out online, and the photoelectricity of Automated condtrol information transfer
Compound insulation DC electric cable.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this：± 150kV～500kV direct current surpasses
High-voltage cross-linking polythene insulating, photo composite power cable, cable from internal layer to outer layer include successively conductor, semiconductive strapping tape,
Conductor shield, insulating barrier, insulation screen, the first semiconductive water blocking layer, shielding layer of copper wires and the second semiconductive water blocking layer, institute
State the second semiconductive water blocking layer outer layer and coat integrated water stop layer for metallo-plastic composite band, described metallo-plastic composite band cladding is comprehensive
Conjunction water blocking layer outer layer is plastics outer jacket, is provided with many high intensity Loose tube fiber units inside described shielding layer of copper wires；Described
Metallo-plastic composite band cladding integrated water stop layer is made using compound copper-plastics band or aluminium-plastic tape is made.
For the power cable of direct current transportation, because its conductor wire core does not have Kelvin effect, therefore, described conductor adopts
Press copper conductor or press aluminium conductor.
Described insulating barrier is made using the cross-linked polyethylene insulating material being exclusively used in direct current transportation or polyolefin direct current cables material.
Described shielding layer of copper wires becomes S, Z to be made by twisting using many soft copper silks, and shielding layer of copper wires is arranged at the first semiconductive
Between water blocking layer and the second semiconductive water blocking layer.
Fiber unit is compound with power cable.Due to the construction featuress of the photoelectric compound cable of present invention design, energy side
Just solve the Complex Problem of fiber unit and power cable, and fiber unit can be made to obtain good mechanical protection.By client
Need, described high intensity Loose tube fiber unit has the high intensity Loose tube fiber unit 2-4 root of metal conducting layer using outside,
It is placed in the both sides of cable, is clipped in the middle of densely covered copper wire, to be S, Z stranded with copper wire simultaneously, with being used the wrapped binding of thin copper belt, or
Person's directly wrapped second layer semiconductor waterstop.
Described high intensity Loose tube fiber unit moulds the highstrenghtpiston's Loose tube light with parcel from thin aluminum plastic belt or copper
Fine unit.
Described high intensity Loose tube fiber unit adopts highstrenghtpiston's Loose tube fiber unit of surface metal spraying.
Radial water-resisting in order to meet DC ultra-high-voltage electric power cable requires, its waterproof construction of the insulation DC electric cable of design
Integrated water stop layer is coated using metallo-plastic composite band.Described metallo-plastic composite band cladding integrated water stop layer adopts copper or plastic-aluminum
Composite belt longitudinal bag welding, extrudes the integrated water stop layer that vinyon sheath is constituted simultaneously.
Described metallo-plastic composite band cladding integrated water stop layer adopt copper or aluminium-plastic tape wrapped after, pour hot-melt asphalt,
Extrude vinyon sheath water blocking layer simultaneously.
Described plastics outer jacket is made using polyethylene sheath material or polyvinyl chloride insulation sheath；Described pe sheath is adopted
With modified medium density polyethylene sheath.
The method have the advantages that：
1st, direct current transportation ultra-high voltage cross-linking polyethylene insulation photoelectricity composite power cable of the present invention, have good mechanical performance and
Excellent waterproof, Corrosion Protection, anufacturability is also fine, and manufacturing cost is relatively low.
2nd, the shielding layer of copper wires of cable has higher short-circuit current capability it is important that high intensity Loose tube within cable
Fiber unit structure and placement location are reasonable in design, will not damaged easily.
3rd, the present invention provides one kind for country and is applied to large-sized DC power transmission electric network, power station, and ± 150kV～500kV surpasses
High pressure, high-capacity direct current transmission of electricity, and intelligent grid service data collection can be carried out online, and the light of Automated condtrol information transfer
Reply conjunction insulation DC electric cable by cable.
4th, fiber unit and power cable is compound, due to the construction featuress of the photoelectric compound cable of present invention design, energy
Easily solve the Complex Problem of fiber unit and power cable, and fiber unit can be made to obtain good mechanical protection.By visitor
Family needs, and has the high intensity Loose tube fiber unit 2～4 of metal conducting layer from outside, is placed in the both sides of cable, is clipped in close
In the middle of the copper wire of cloth, to be S, Z stranded simultaneously with copper wire, and with being used the wrapped binding of thin copper belt, or directly the wrapped second layer is partly led
Electric waterstop.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is the overall structure diagram that the present invention is not provided with high intensity Loose tube fiber unit.
Fig. 3 is the high intensity Loose tube fiber unit structural representation that the present invention has metal conducting layer.
In figure：Conductor 1, semiconductive strapping tape 2, conductor shield 3, insulating barrier 4, insulation screen 5, the first semiconductive resistance
Water layer 6, shielding layer of copper wires 7, the second semiconductive water blocking layer 8, metallo-plastic composite band cladding integrated water stop layer 9, plastics outer jacket
10th, high intensity Loose tube fiber unit 11.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
As shown in figure 1, ± 150kV～500kV DC ultra-high-voltage crosslinked polyetylene insulated photoelectricity composite power cable, cable
Include conductor 1, semiconductive strapping tape 2, conductor shield 3, insulating barrier 4, insulation screen 5, first from internal layer to outer layer successively
Semiconductive water blocking layer 6, shielding layer of copper wires 7 and the second semiconductive water blocking layer 8, described second semiconductive water blocking layer 8 outer layer is metal
Plastics composite band coats integrated water stop layer 9, and described metallo-plastic composite band cladding integrated water stop layer 9 outer layer is plastics outer jacket
10, it is provided with many high intensity Loose tube fiber units 11 inside described shielding layer of copper wires 7；Described metallo-plastic composite band cladding is comprehensive
Conjunction water blocking layer 9 is made using compound copper-plastics band or aluminium-plastic tape is made.
Further, for the power cable of direct current transportation, because its conductor wire core does not have Kelvin effect, therefore, institute
State conductor 1 using pressing copper conductor or press aluminium conductor.
Further, be provided with wrapped semiconductive strapping tape 2 outside conductor, the mesh of wrapped semiconductive strapping tape 2 be in order to
Strengthen the steadiness of conductor structure.Wrapped semiconductive strapping tape 2 and conductor shield 3 combine the conductor screen constituting cable
Cover.
Further, direct current transportation ultra-high voltage cross-linking polyethylene-insulated power cable, its insulating barrier 4 should be straight using being exclusively used in
The cross-linked polyethylene insulating material of stream transmission of electricity, the polyolefin direct current cables material that other special formulations may also be employed is made, but never may be used
Manufactured using the ultrapurification power cable with cross-linked polyethylene insulation material manufacturing for ultrahigh-voltage alternating-current power transmission cable.Described conductor
Screen layer 3, insulation screen 5 adopt ultra-smooth semiconductive polyolefin shielding material to manufacture.Conductor shield 3, insulating barrier 4, insulation
Screen layer 5 is once extruded manufacture using three-layer co-extruded cross-linking cable production line and is completed.
Further, require to meet the larger capacity of short circuit of DC ultra-high-voltage electric power cable, the metallic shield of cable
The stranded shielding of copper wire gathered using circumferential arrangement, described shielding layer of copper wires 7, according to design requirement, is become by tens of soft copper silks
S, Z are made by twisting, and shielding layer of copper wires 7 is arranged between the first semiconductive water blocking layer 6 and the second semiconductive water blocking layer 8.
Further, in DC ultra-high-voltage crosslinked polyetylene insulated photoelectricity composite power cable, described high intensity pine covers
Pipe fiber unit 11 and shielding layer of copper wires 7 are positioned between two-layer semiconductive water-blocking buffer layer simultaneously.In order to prevent direct current superelevation
Internal field's distortion, high intensity Loose tube optical fiber is produced between the insulation shielding of piezoelectric forces conductive cable cores and metal screen layer
Unit 11 must have the high intensity Loose tube fiber unit of metal conducting layer using outside.The high intensity of first-selected thin aluminum plastic belt parcel
Plastics Loose tube fiber unit；Or the highstrenghtpiston's Loose tube fiber unit using surface metal spraying；Principle is pine set
Pipe fiber unit surface must have conductive layer, and possesses suitable mechanical strength.There is the high intensity pine set of external metallization conductive layer
Pipe fiber unit structural representation is shown in Fig. 3.
As Fig. 3, a kind of high intensity Loose tube fiber unit structure having external metallization conductive layer, its internal layer to outer layer is successively
Include optical fiber 12 respectively, fill optical fiber cream 13, highstrenghtpiston's Loose tube 14, non-ferrous metal band clad 15.Optical fiber 12 basis
Client needs, can loose tricks single data communication optical fiber, temperature sensing optical fiber or mechanics sensor fibre.Highstrenghtpiston's Loose tube 14
The polyester plastics Loose tube of high-moduluss can be adopted it is also possible to high temperature resistant, corrosion-resistant, high insulation, low mill are adopted according to customer requirement
Wipe coefficient, have the Teflon PVDF optical fiber loose tube of good mechanical strength.Non-ferrous metal band clad 15 using gross thickness can be
The aluminum plastic belt of below 0.05mm indulges bag or the wrapped outer layer in highstrenghtpiston's Loose tube 14.The metal tape bag of this structure
Cover high intensity Loose tube fiber unit, internal highstrenghtpiston's Loose tube 14 has good High-Voltage Insulation performance and physical isolation
Energy；The metal tape clad of outer layer is except there being good electric conductivity, and is easily peeled off；The metal tape of the present invention is made to coat height
Intensity Loose tube fiber unit, in cable installation, operation is very easy with fibre junction for arrangement application.
Further, fiber unit and power cable is compound.Structure due to the photoelectric compound cable of present invention design
Feature, can easily solve the Complex Problem of fiber unit and power cable, and fiber unit can be made to obtain machinery guarantor well
Shield.Need by client, described high intensity Loose tube fiber unit 11 has the high intensity Loose tube light of metal conducting layer using outside
Fine unit 2-4 root, is placed in the both sides of cable, must not be placed in the upper and lower end of cable circumference, is clipped in the middle of densely covered copper wire, with copper
It is stranded that silk is S, Z simultaneously, with being used the wrapped binding of thin copper belt, or directly wrapped second layer semiconductor waterstop.This structure
Single photoelectricity composite power cable, in sabot and when laying, fiber unit has enough redundant lengths, will not make optical fiber list
Unit is subject to excessive stretching so that damaging.
Further, described high intensity Loose tube fiber unit 11 selects highstrenghtpiston's Loose tube of thin aluminum plastic belt parcel
Fiber unit.It is below 0.05mm aluminium-plastic tape that thin aluminum plastic belt can select gross thickness according to design needs.
Further, described high intensity Loose tube fiber unit 11 may also be employed the highstrenghtpiston pine of surface metal spraying
Casing fiber optic unit.
Further, in order to the radial water-resisting meeting DC ultra-high-voltage electric power cable requires, the insulation DC electric cable of design
Its waterproof construction adopts metallo-plastic composite band to coat integrated water stop layer.Described metallo-plastic composite band coats integrated water stop layer 9
Using copper or aluminum plastic composite belt longitudinal bag welding, extrude the integrated water stop layer that vinyon sheath is constituted simultaneously.
Further, described metallo-plastic composite band cladding integrated water stop layer 9 adopt copper or aluminium-plastic tape wrapped after, pour
Hot-melt asphalt, extrudes vinyon sheath water blocking layer simultaneously.
Further, described plastics outer jacket 10 is made using polyethylene sheath material or polyvinyl chloride insulation sheath；Described
Pe sheath is using modified medium density polyethylene sheath.
Make the metallo-plastic composite band of integrated water stop layer, according to design needs can select metal thickness be 0.1～
The copper of 0.2mm（Aluminum）Plastic composite strip.
The insulation DC electric cable metallo-plastic composite band cladding integrated water stop layer 9 of the present invention, to adopt copper（Aluminum）Mould compound
The integrated water stop layer that the vertical bag welding of band+simultaneously extrude vinyon sheath is constituted is preferred.Copper can also be adopted（Aluminum）Mould
After composite band is wrapped, the technique pouring hot-melt asphalt+simultaneously extrude vinyon sheath water blocking layer is time choosing.
Copper（Aluminum）Plastic composite strip is indulged the integrated water stop layer that bag welding+simultaneously extrude vinyon sheath constituted and is manufactured work
Skill.Choose the copper of certain thickness and width（Aluminum）Plastic composite strip material；Specially designed shaping mould is longitudinally coated on cable core
The second semiconductive water blocking layer 8 on, be blow molded through hot-air blower simultaneously, make to be overmolding to the copper of cylindrical shape（Aluminum）Mould the lap seam of band
Plastics blow and fuse cementation.Meanwhile to having coated copper（Aluminum）The cable core moulding compound water blocking layer 9 extrudes polyethylene simultaneously and moulds
Material sheath 10, covers through the vinyon sheath of high-temperature thermoplastic shape, makes longitudinally to be overmolding to columnar copper on cable core
（Aluminum）Mould the plastic layer on belt 9, the vinyon sheath 10 with the thermoplastic shape extruding, clinkering securely is integral.Can
By constituting the copper of insulation DC electric cable（Aluminum）Mould compound integrated water stop layer.
The copper of the DC ultra-high-voltage electric power cable made（Aluminum）Mould the internal copper of compound integrated water stop layer, be close to
On two semiconductive water blocking layers 8.So insulation DC electric cable insulation screen 5 → through first semiconductive water-blocking buffer layer 6 → copper wire
Screen layer 7 → the second semiconductive water-blocking buffer layer 8 → copper（Aluminum）Mould compound integrated water stop layer 9 and constitute complete direct current power electricity
The electrically continuous path of cable metallic shield.This technological design is particularly important with manufacture correctness, straight with the vertical bag welded tube protective metal shell of aluminum
Stream power cable compares, and present invention design direct current transportation ultra-high voltage cross-linking polyethylene-insulated power cable efficiently avoid product
The risk of raw corona discharge.
The popularization applied due to national supervoltage power transmission engineering " online electric light measurement signal switch technology " and intelligent grid
Needs, national grid superhigh voltage DC power transmission and transformation electrical network and the big power plant construction built, is all often customization photoelectricity composite electric
Cable is however not excluded that also there is the DC ultra-high-voltage transmission of electricity power cable customizing without optical fiber measurement, communication unit.Fig. 2 is the present invention
Without optical fiber measurement, ± 150kV～500kV direct current transportation ultra-high voltage cross-linking polyethylene insulation of communication unit, brass wire shielding, copper
（Aluminum）Plastic composite strip indulges the structural representation of bag+vinyon sheath integrated water stop layer power cable.
Fig. 2 compared to Figure 1 main distinction relatively, is in cable making process, is not provided with high intensity Loose tube optical fiber
Unit 11.
Insulation DC electric cable of the present invention has good mechanical performance and excellent waterproof, Corrosion Protection, manufacturing process
Property also fine, manufacturing cost is relatively low.The shielding layer of copper wires of cable has higher short-circuit current capability it is important that inside cable
High intensity Loose tube fiber unit structure and placement location reasonable in design, will not damaged easily.The present invention provides for country
One kind is applied to large-sized DC power transmission electric network, power station, ± 150kV～500kV supertension, high-capacity direct current transmission of electricity, and can be
Line carries out intelligent grid service data collection, and the photoelectricity of Automated condtrol information transfer is combined insulation DC electric cable.
Above-described embodiment is used for illustrating the present invention, rather than limits the invention, the present invention spirit and
In scope of the claims, any modifications and changes that the present invention is made, both fall within protection scope of the present invention.
Claims (10)
1. the crosslinked polyetylene insulated photoelectricity composite power cable of ± 150kV～500kV DC ultra-high-voltage, cable is from internal layer to outer layer
Include conductor successively（1）, semiconductive strapping tape（2）, conductor shield（3）, insulating barrier（4）, insulation screen（5）, the first half
Conductive water blocking layer（6）, shielding layer of copper wires（7）With the second semiconductive water blocking layer（8）It is characterised in that：Described second semiconductive resistance
Water layer（8）Outer layer coats integrated water stop layer for metallo-plastic composite band（9）, described metallo-plastic composite band cladding integrated water stop layer
（9）Outer layer is plastics outer jacket（10）, described shielding layer of copper wires（7）Inside is provided with many high intensity Loose tube fiber units
（11）；Described metallo-plastic composite band coats integrated water stop layer（9）Made using compound copper-plastics band or aluminium-plastic tape is made.
2. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described conductor（1）Using pressing copper conductor or press aluminium conductor.
3. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described insulating barrier（4）Using the cross-linked polyethylene insulating material being exclusively used in direct current transportation or polyolefin unidirectional current
Cable material is made.
4. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described shielding layer of copper wires（7）S, Z is become to be made by twisting using many soft copper silks, shielding layer of copper wires（7）Setting
In the first semiconductive water blocking layer（6）With the second semiconductive water blocking layer（8）Between.
5. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described high intensity Loose tube fiber unit（11）There is the high intensity Loose tube of metal conducting layer using outside
Fiber unit 2-4 root, is placed in the both sides of cable, is clipped in the middle of densely covered copper wire, and to be S, Z stranded simultaneously with copper wire, thin with being used
The wrapped binding of copper strips, or directly wrapped second layer semiconductor waterstop.
6. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described high intensity Loose tube fiber unit（11）Mould the high-strength plastic with parcel from thin aluminum plastic belt or copper
Material Loose tube fiber unit.
7. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described high intensity Loose tube fiber unit（11）Highstrenghtpiston's Loose tube using surface spraying metal
Fiber unit.
8. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described metallo-plastic composite band coats integrated water stop layer（9）Using copper or aluminum plastic composite belt longitudinal bag welding,
Extrude the integrated water stop layer that vinyon sheath is constituted simultaneously.
9. ± 150kV～500kV DC ultra-high-voltage according to claim 1 crosslinked polyetylene insulated photoelectricity composite electric electricity
Cable it is characterised in that：Described metallo-plastic composite band coats integrated water stop layer（9）Using copper or aluminium-plastic tape wrapped after, pour
Hot-melt asphalt, extrudes vinyon sheath water blocking layer simultaneously.
10. the crosslinked polyetylene insulated photoelectricity composite electric of ± 150kV～500kV DC ultra-high-voltage according to claim 1
Cable it is characterised in that：Described plastics outer jacket（10）Made using polyethylene sheath material or polyvinyl chloride insulation sheath；Described
Pe sheath is using modified medium density polyethylene sheath.
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| CN201611081866.5A CN106448916A (en) | 2016-11-30 | 2016-11-30 | Direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable |
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| CN201611081866.5A CN106448916A (en) | 2016-11-30 | 2016-11-30 | Direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable |
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| CN106448916A true CN106448916A (en) | 2017-02-22 |
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| CN201611081866.5A Pending CN106448916A (en) | 2016-11-30 | 2016-11-30 | Direct-current ultrahigh-voltage (+/- 150 kV to 500 kV) crosslinked polyethylene insulated photoelectric composite power cable |
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| CN112382439A (en) * | 2020-08-14 | 2021-02-19 | 乐星红旗电缆（湖北）有限公司 | Aluminum core crosslinked polyethylene insulation aluminum-plastic composite belt photoelectric composite power cable |
| CN112466513A (en) * | 2020-11-02 | 2021-03-09 | 宁波东方电缆股份有限公司 | Flexible direct current insulation power cable of 535kV superhigh pressure |
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