CN202563959U - Large cross section split conductor for superhigh voltage cable - Google Patents
Large cross section split conductor for superhigh voltage cable Download PDFInfo
- Publication number
- CN202563959U CN202563959U CN2012201856330U CN201220185633U CN202563959U CN 202563959 U CN202563959 U CN 202563959U CN 2012201856330 U CN2012201856330 U CN 2012201856330U CN 201220185633 U CN201220185633 U CN 201220185633U CN 202563959 U CN202563959 U CN 202563959U
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- conductor
- circular central
- piece
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- tile
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Abstract
Provided is a large cross section split conductor for a superhigh voltage cable, comprising division blocks distributed upon the cross section of the cable. The large cross section split conductor is characterized in that: the division blocks comprise a circular central compressing block and five tile-shaped blocks; the circular central compressing block is located at the center of the conductor; the five tile-shaped blocks are evenly distributed around the circular central compressing block; a piece of insulation paper is arranged between the circular central compressing block and the five tile-shaped blocks; the insulation paper is also arranged between the adjacent tile-shaped blocks; the periphery of the five tile-shaped blocks is provided with a semi-conductive band layer; and the exterior of the semi-conductive band layer is coated with a polypropylene protective layer. The structure of a central compressing block surrounded by five tile-shaped blocks in a uniform manner facilitates the stabilization of the cabling conductor structure, maximumly reduces the increase of the conductor AC resistor resulting from the skin effect, effectively reduces the heating resulting from conductor losses, increases the current-carrying capacity of the conductor, and raises the transmission capacity of the cable. The large cross section split conductor features excellent stability and rounding degree, substantially attenuates the skin effect, and is applicable to the large cross section split conductor.
Description
Technical field
The utility model relates to the high-tension cable that uses in electric power transfer and the big capacity distribution system, is to be applicable to that extra-high-tension cable uses the heavy in section milliken conductor.
Background technology
Along with the development of China's power grid construction and the quickening of Development of China's Urbanization; Industry-by-industry is increasing to the demand of electric power, and electricity needs increases severely, and severe power shortage appears using in some areas; The problem of shortage of electric power can be effectively alleviated in the construction of big capacity distribution system, and drives the quick growth of extra-high-tension cable demand.The exploitation extra-high-tension cable is the heavy in section extra-high-tension cable especially, has become the road of the certainty of China cables manufacturing enterprise.
Because " kelvin effect " and " proximity effect " of cable conductor when the transmission alternating current; The conductor net sectional area is descended; AC resistance increases; Cause the power consumption heating; The capacity of current delivery is reduced greatly; This phenomenon is more and more obvious along with the increase of cross-sectional area of conductor, therefore in GB/T11017-2002 " rated voltage 110kV cross-linked polyethylene insulated cable and annex thereof ", GB/ Z18890 " rated voltage 220 kV (Um=252 kV) crosslinked polyene insulated cable and annex thereof " and GB/T 22078-2008 standards such as " rated voltage 500 kV (Um=550 kV) cross-linked polyethylene insulated cable and annexes thereof ", has stipulated that the cross section is at 800 mm
2Above cable conductor must adopt milliken conductor, causes the conductor resistance increase of cable and the decline of transmission line capability to reduce " kelvin effect " and " proximity effect ".
At present, high pressure and ultra-high voltage cross-linking cable 800 mm
2With upper conductor, adopt fan-shaped five to cut apart or six segmenting structures more.Because fan-shaped five cut apart or there is the space in the crosslinked cable center of six segmenting structures, burst piece stability is bad behind the conductor stranding, is prone to slide, and roundness is bad, is prone to flat.
The utility model content
The technical problem that the utility model will solve is to provide a kind of strand of piece good stability, extra-high-tension cable that roundness is good to use the heavy in section milliken conductor.
The technical scheme that the utility model technical solution problem is taked is following: a kind of extra-high-tension cable is used the heavy in section milliken conductor; Comprise the split share piece that is distributed in the cross-section of cable; It is characterized in that: the split share piece comprises that a circular central presses strand piece and five watts of shape thigh pieces; Circular central is pressed a strand piece and is positioned at the conductor center, five watts of shape thigh pieces be evenly distributed on circular central press strand piece around; Circular central is pressed between strand piece and five watts of shape thigh pieces and is provided with insulating paper, is provided with insulating paper between the adjacent watt shape thigh piece, and the periphery of five watts of shape thigh pieces is provided with the semi-conductive tape layer, and semiconductive belt outside coats the polypropylene protective layer.
The utility model circular central is pressed strand piece and the structure of five watts of shape thigh pieces that evenly distribute on every side, and it is stable to help the stranding conductor structure; Large size conductor is divided into several parts insulated from each other, alleviates the conductor AC resistance that causes because of kelvin effect to greatest extent and increase, reduce the conductor losses heating effectively, increase the ampacity of conductor, improve the transmission capacity of cable.The utility model thigh piece good stability, roundness is good; Through test application, its advantage that lowers kelvin effect is remarkable, the heavy in section milliken conductor that is applicable to.
Description of drawings
Fig. 1 is the structural representation of the utility model,
Fig. 2 is the utility model specification sketch map.
Embodiment
As shown in Figure 1: a kind of extra-high-tension cable is used the heavy in section milliken conductor; Comprise the split share piece that is distributed in the cross-section of cable; The split share piece comprises that a circular central presses strand piece 1 and five watts of shape thigh pieces 2; Circular central is pressed strand piece 1 and is positioned at the conductor center, five watts of shape thigh pieces 2 be evenly distributed on circular central press strand piece 1 around; Circular central is pressed between strand piece 1 and five watts of shape thigh pieces 2 and is provided with insulating paper 3, and the periphery that is provided with 3, five watts of shape thighs of insulating paper piece 2 between the adjacent watt shape thigh piece 2 is provided with semi-conductive tape layer 4, and semiconductive belt 4 outsides coat polypropylene protective layer 5.
With 1600 mm
2Conductor is an example, and five cut apart watt shape thigh piece and circular central presses the cross section sum of strand piece and must reach 1600mm
2, combining five segmenting structure characteristics according to my company's current technology design, each watt shape thigh piece 2 monofilament radicals are 61, and structure is 1+6+12+18+24, and it is 19 that circular central is pressed strand piece 1 monofilament radical, and structure is 1+6+12; Filament diameter is 2.64 mm.
Referring to Fig. 2, conductor diameter D is 49.5mm, and the diameter d that circular central is pressed strand piece 1 is 12.4mm.
Claims (4)
1. an extra-high-tension cable is used the heavy in section milliken conductor; Comprise the split share piece that is distributed in the cross-section of cable; It is characterized in that: the split share piece comprises that a circular central presses a strand piece (1) and five watts of shape thigh pieces (2); Circular central is pressed a strand piece (1) and is positioned at the conductor center, five watts of shape thigh pieces (2) be evenly distributed on circular central press a strand piece (1) around; Circular central is pressed between a strand piece (1) and five watts of shape thigh pieces (2) and is provided with insulating paper (3); Be provided with insulating paper (3) between the adjacent watt shape thigh piece (2); The periphery of five watts of shape thigh pieces (2) is provided with semi-conductive tape layer (4), and semiconductive belt (4) outside coats polypropylene protective layer (5).
2. a kind of extra-high-tension cable as claimed in claim 1 is used the heavy in section milliken conductor, it is characterized in that: the cross section of milliken conductor is 1600 mm
2
3. a kind of extra-high-tension cable as claimed in claim 2 is used the heavy in section milliken conductor; It is characterized in that: each watt shape thigh piece (2) monofilament radical is 61; Structure is 1+6+12+18+24, and it is 19 that circular central is pressed a strand piece (1) monofilament radical, and structure is 1+6+12; Filament diameter is 2.64 mm.
4. a kind of extra-high-tension cable as claimed in claim 3 is used the heavy in section milliken conductor, it is characterized in that: conductor diameter D is 49.5mm, and the diameter d that circular central is pressed a strand piece (1) is 12.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201856330U CN202563959U (en) | 2012-04-27 | 2012-04-27 | Large cross section split conductor for superhigh voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201856330U CN202563959U (en) | 2012-04-27 | 2012-04-27 | Large cross section split conductor for superhigh voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563959U true CN202563959U (en) | 2012-11-28 |
Family
ID=47213587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201856330U Expired - Lifetime CN202563959U (en) | 2012-04-27 | 2012-04-27 | Large cross section split conductor for superhigh voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563959U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021870A (en) * | 2014-06-27 | 2014-09-03 | 江苏亨通高压电缆有限公司 | Large-section aluminum core 5+1 split conductor and manufacturing method thereof |
| CN104376912A (en) * | 2014-11-27 | 2015-02-25 | 国家电网公司 | Large-section power cable conductor low in skin effect |
| CN109256241A (en) * | 2018-10-23 | 2019-01-22 | 江苏亨通高压海缆有限公司 | Dislocation-preventing segmented conductor strand block die and segmented conductor |
-
2012
- 2012-04-27 CN CN2012201856330U patent/CN202563959U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104021870A (en) * | 2014-06-27 | 2014-09-03 | 江苏亨通高压电缆有限公司 | Large-section aluminum core 5+1 split conductor and manufacturing method thereof |
| CN104376912A (en) * | 2014-11-27 | 2015-02-25 | 国家电网公司 | Large-section power cable conductor low in skin effect |
| CN109256241A (en) * | 2018-10-23 | 2019-01-22 | 江苏亨通高压海缆有限公司 | Dislocation-preventing segmented conductor strand block die and segmented conductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |