CN202495281U - Low skin effect extra-high voltage crosslinked cable - Google Patents
Low skin effect extra-high voltage crosslinked cable Download PDFInfo
- Publication number
- CN202495281U CN202495281U CN2012201154520U CN201220115452U CN202495281U CN 202495281 U CN202495281 U CN 202495281U CN 2012201154520 U CN2012201154520 U CN 2012201154520U CN 201220115452 U CN201220115452 U CN 201220115452U CN 202495281 U CN202495281 U CN 202495281U
- Authority
- CN
- China
- Prior art keywords
- cable
- high voltage
- conductor
- skin effect
- utility
- 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
Links
- 230000002500 effect on skin Effects 0.000 title abstract 3
- 239000004020 conductor Substances 0.000 claims abstract description 34
- 230000000694 effects Effects 0.000 claims description 13
- 238000004132 cross linking Methods 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 abstract description 2
- 239000004703 cross-linked polyethylene Substances 0.000 abstract description 2
- 239000000395 magnesium oxide Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 3
- 239000012774 insulation material Substances 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 239000011241 protective layer Substances 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a low skin effect extra-high voltage crosslinked cable, comprising a tubular conductor. The conductor structure of the tubular conductor with a needed section specification is formed by drawing of a copper tube. An insulating layer made of a crosslinked polyethylene material is extruded on the tubular conductor. A layer of metal sheath is provided outside the insulating layer. An outer protective layer is provided outside the metal sheath. The tubular conductor is filled in the middle with a magnesium oxide insulation material. With the extra-high voltage crosslinked cable provided by the utility model, the mechanical strength requirement is met by the conductor structure, the cable temperature resistance level is met and the cable skin effect is reduced.
Description
Technical field
The utility model relates to the electric wire field, specifically is meant a kind of for reducing the ultra-high voltage cross-linking cable that the cable kelvin effect is taken measures.
Background technology
The ultra-high voltage cross-linking cable of present 66kV in the world and above electric pressure, its insulating material mainly is crosslinked polyethylene (ultra-clean).Crosslinked polyetylene insulated have transmission capacity big, allow that working temperature is high, electric cable accessories is simple, price is lower, failure rate is low, reliability is high, many advantages such as production and easy construction, maintenance are simple.
The electrical property performance assessment criteria of ultra-high voltage cross-linking cable mainly comprises: conductor resistance, electric capacity, inductance etc.; These indexs directly have influence on the transmission capacity and the useful life of cable.Wherein, when alternating current passed through conductor, because induction effect, CURRENT DISTRIBUTION was inhomogeneous, and more near conductive surface, current density is big more, and this phenomenon is called " kelvin effect ".The resistance of cable core will increase because of kelvin effect and proximity effect, and the cable conductor resistance of this moment is called effective resistance.Effective resistance has determined the transmission capacity of ultra-high voltage cross-linking cable, is the core index of extra-high-tension cable.
Under the constant condition of objective power capacity demand; Kelvin effect can make cable seriously generate heat, and cable insulation can be because comprehensive functions such as electricity, heat produce vicious circle phenomenon aging and accelerated ageing; Cause seriously shorten the useful life of cable, current-carrying capacity obviously reduces.
A kind of 500KV ultra-high voltage cross-linking cable and manufacturing technique method are disclosed in Chinese invention patent ublic specification of application CN1428792; It mainly adopts the insulating material and the special smooth semiconductive shieldin material of the ultra-clean that is added with specialist additive of high dielectric property; Thereby improve the cable breakdown field intensity; Improve cable useful life, but not have the kelvin effect of improvement in essence cable conductor.
A kind of cable conductor of anti-kelvin effect is disclosed in Chinese utility application prospectus CN201242904; Comprise the multi-layer cable conductor; Junction between described each layer of multi-layer cable conductor is wrapped respectively and is provided with insulating barrier; Have that the cross section utilance is high, ampacity is big, be not easy heating, cheap for manufacturing cost, characteristics such as manufacturing process is easy, its weak point is that insulating barrier is to adopt the insulating paper material to process.
The utility model content
The technical problem that the utility model will solve provides a kind of conductor structure that makes and satisfies mechanical strength requirements, satisfies the temperature resistant grade of cable, the ultra-high voltage cross-linking cable of reduction cable kelvin effect.
The described a kind of low kelvin effect ultra-high voltage cross-linking cable of the utility model; Comprise tubular shape conductor, extrude a layer insulating outside on tubular shape conductor, the layer of metal sheath is set on insulating barrier; One deck outer jacket is set on metallic sheath, has filled a kind of insulating material in the middle of the described tubular shape conductor.
For cross section that utilizes cable conductor most effectively and the surface perimeter that has increased conductors cross, described tubular shape conductor adopts a kind of drawing copper tubes to form the conductor structure of required cross section specification.
The beneficial effect of the utility model is:
The tubular shape conductor of the utility model can effectively utilize the cross section of cable conductor, has increased the surface perimeter of conductors cross, thereby improves the effective-current passage of cable conductor, thereby ampacity is big, and the conductor Electric Field Distribution is even.
Description of drawings
Fig. 1 is that the utility model is implemented structure chart.
Embodiment:
As shown in Figure 1, the described a kind of low kelvin effect ultra-high voltage cross-linking cable of the utility model comprises tubular shape conductor 2, and its tubular shape conductor 2 adopts drawing copper tubes to form the conductor structure of required cross section specification; Extrude the insulating barrier 3 that one deck adopts cross-linking polyethylene materials to process outside on tubular shape conductor 2; Layer of metal sheath 4 is set outside insulating barrier 3; On metallic sheath 4, be provided with one deck outer jacket 5, having filled a kind of magnesia with height insulation high-temperature resistant performance in the middle of the described tubular shape conductor 2 is the insulating material 1 of material.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection range of the utility model.
Claims (1)
1. one kind low kelvin effect ultra-high voltage cross-linking cable; It is characterized in that comprising tubular shape conductor (2); Extruded insulation layer (3) outside tubular shape conductor (2); Metallic sheath (4) is set outside insulating barrier (3), outside metallic sheath (4), is provided with outer jacket (5), fill insulant (1) in the middle of tubular shape conductor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201154520U CN202495281U (en) | 2012-03-26 | 2012-03-26 | Low skin effect extra-high voltage crosslinked cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201154520U CN202495281U (en) | 2012-03-26 | 2012-03-26 | Low skin effect extra-high voltage crosslinked cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495281U true CN202495281U (en) | 2012-10-17 |
Family
ID=47001494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201154520U Expired - Lifetime CN202495281U (en) | 2012-03-26 | 2012-03-26 | Low skin effect extra-high voltage crosslinked cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495281U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543292A (en) * | 2012-03-26 | 2012-07-04 | 江苏新远程电缆股份有限公司 | Low-skin-effect extra-high-voltage cross-linked cable |
| CN105405512A (en) * | 2015-12-09 | 2016-03-16 | 江苏荣宜电缆有限公司 | Optical fiber composite cross-linked power cable |
| US9983376B2 (en) | 2015-04-23 | 2018-05-29 | Corning Optical Communications LLC | High-data-rate electrical interconnect cables |
-
2012
- 2012-03-26 CN CN2012201154520U patent/CN202495281U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543292A (en) * | 2012-03-26 | 2012-07-04 | 江苏新远程电缆股份有限公司 | Low-skin-effect extra-high-voltage cross-linked cable |
| US9983376B2 (en) | 2015-04-23 | 2018-05-29 | Corning Optical Communications LLC | High-data-rate electrical interconnect cables |
| CN105405512A (en) * | 2015-12-09 | 2016-03-16 | 江苏荣宜电缆有限公司 | Optical fiber composite cross-linked power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee after: YuanCheng Cable Co., Ltd. Address before: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee before: Jiangsu New Remote Cable Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee after: Rui Kang Wen far cable Limited by Share Ltd Address before: 214251 Yixing City, Wuxi Province, Lin Guan Road, No. 8, No. Patentee before: YuanCheng Cable Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121017 |