CN203812636U - A high-voltage submarine electric power transmission cable - Google Patents
A high-voltage submarine electric power transmission cable Download PDFInfo
- Publication number
- CN203812636U CN203812636U CN201420079682.5U CN201420079682U CN203812636U CN 203812636 U CN203812636 U CN 203812636U CN 201420079682 U CN201420079682 U CN 201420079682U CN 203812636 U CN203812636 U CN 203812636U
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- cable
- extra large
- core
- high voltage
- large cable
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Abstract
The utility model belongs to the technical field of electric power transmission, and especially relates to a high-voltage submarine electric power transmission cable which realizes submarine long distance electric power transmission through a high voltage cable. The submarine cable comprises three single-core cables which are intertwisted with each other to form the submarine cable. A lead alloy sheath is arranged for each single-core cable. Core body outer sheaths are arranged outside the lead alloy sheathes. The outer sheaths employ semi-conducting polyethylene materials. The lead alloy sheaths and the core body outer sheaths are in mutual contact and are electrically conductive. The submarine cable comprises rubber wrapping belts. The wrapping belts are arranged on the outer layers of the three single-core cables. A PP rope inner cushion layer, a steel wire armor layer and an outer blanket layer are sequentially included between the rubber wrapping belts to the outermost layer. Through the adoption of the submarine power cable with a high voltage and a large cross section, requirements for an induction voltage of the outer sheaths during operation of the submarine cable are satisfied.
Description
Technical field
The utility model belongs to electric power conveying technology field, relates in particular to a kind of high voltage seabed extra large cable of transmitting electricity, and realizes high-tension cable and carries out seabed long distance power transmission.
Background technology
In the world, European and American areas and day this application sea electric power cable be morning, at present still in the leading level in the world; China starts to apply sea electric power cable the beginning of the nineties at the end of the eighties in last century, so far existing 20 years of researches are historical, at present in international most advanced level, along with socioeconomic development, the growth of island load, a lot of original 10 kilovolts of supply lines that use can not meet growing power demands, and adopting high voltage, the power supply of heavy in section sea electric power cable is trend of the times.If adopt 66kV high voltage power transmission, submarine cable is long, cannot be divided into the some segments that meet the requirement of metallic sheath induced voltage, will make metallic sheath induced voltage reach very high numerical value.
Utility model content
For above shortcomings part in prior art, technical problem to be solved in the utility model is to provide a kind of high voltage seabed extra large cable of transmitting electricity, adopt high voltage, heavy in section subsea power sea cable, the requirement of oversheath induced voltage while meeting extra large cable operation.
The utility model is achieved in that
A kind of high voltage seabed extra large cable of transmitting electricity, this sea cable wrap is drawn together three single-core cables and is mutually entwined, every single-core cable is all established alloy lead sheath, alloy lead sheath arranges core body oversheath outward, described oversheath adopts semiconductive polythene material, and alloy lead sheath and core body oversheath are in contact with one another and can conduct electricity; Described extra large cable includes rubber band, and rubber band is arranged on the skin of three single-core cables, also includes successively PP rope inner cushion layer, wire armoring layer and serving from rubber band to skin.
Described single-core cable comprises the copper conductor that blocks water, conductor shield, insulating barrier, insulation screen, semiconductive water blocking layer, alloy lead sheath and core body oversheath successively from inner yearning.
Between single-core cable and rubber band, be provided with insulation filler, in insulation filler, be provided with optical fiber.
The cross-sectional area of this sea cable is 120～150mm
2.
The ground connection of described extra large cable adopts wire armoring layer to be connected with the grounding system of pylon.
Described extra large cable adopts the terminals of cable to be connected by copper bar and drainage thread with overhead transmission line connected mode.
Compared with prior art, beneficial effect is the utility model:
Adopt high voltage, heavy in section sea electric power cable, the requirement of oversheath induced voltage while meeting extra large cable operation.
The utility model sea cable has greatly reduced project cost, meets the demand of existing market; The cable seabed that is laid in, sea, noiseless, pollution-free, has well protected environment.
Accompanying drawing explanation
Fig. 1 is the transmit electricity structural representation of extra large cable of seabed that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the 66kV submarine cable section engineering of take is example, electric pressure 66kV, and single loop, circuit extends long 16.09 kilometers.
A kind of high voltage seabed extra large cable of transmitting electricity, this sea cable wrap is drawn together three single-core cables and is mutually entwined, every single-core cable is all established alloy lead sheath 6, the outer core body oversheath 7 that arranges of alloy lead sheath 6, oversheath 7 adopts semiconductive polythene material, and alloy lead sheath 6 is in contact with one another and can conducts electricity with core body oversheath 7; Normally in service, the electric current summation that flows through three single cores is zero, and therefore, theoretical Shanghai cable metallic sheath induced voltage is also zero.Efficiently solve the long too high problem of oversheath induced voltage causing of circuit.By calculating this current-carrying capacity of cable I=327A, meet and carry requirement.
Sea cable includes rubber band 8, and rubber band 8 is arranged on the skin of three single-core cables, also includes successively PP rope inner cushion layer 9, wire armoring layer 10 and serving 11 from rubber band 8 to skin.
Single-core cable comprises the copper conductor 1 that blocks water, conductor shield 2, insulating barrier 3, insulation screen 4, semiconductive water blocking layer 5, alloy lead sheath 6 and core body oversheath 7 successively from inner yearning.Between single-core cable and rubber band 8, be provided with insulation filler 13, in insulation filler 13, be provided with optical fiber 12.The cross-sectional area of this sea cable is 120～150mm
2.
The ground connection of sea cable adopts wire armoring layer to be connected with the grounding system of pylon.
Sea cable adopts the terminals of cable to be connected by copper bar and drainage thread with overhead transmission line connected mode.
Sea cable is at laying down on sea bottom, approximately 300 meters of reef segment length, and approximately 15 kilometers of bottom silt, medium sand or fine sand length, approximately 390 meters of disembarkation directly buried installations, adopt xoncrete structure, and xoncrete structure inside arranges glass reinforced plastic pipe, and this extra large cable is set in glass reinforced plastic pipe.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (6)
1. a high voltage seabed extra large cable of transmitting electricity, it is characterized in that, this sea cable wrap is drawn together three single-core cables and is mutually entwined, every single-core cable is all established alloy lead sheath, alloy lead sheath arranges core body oversheath outward, described oversheath adopts semiconductive polythene material, and alloy lead sheath and core body oversheath are in contact with one another and can conduct electricity; Described extra large cable includes rubber band, and rubber band is arranged on the skin of three single-core cables, also includes successively PP rope inner cushion layer, wire armoring layer and serving from rubber band to skin.
2. according to the high voltage claimed in claim 1 seabed extra large cable of transmitting electricity, it is characterized in that, described single-core cable comprises the copper conductor that blocks water, conductor shield, insulating barrier, insulation screen, semiconductive water blocking layer, alloy lead sheath and core body oversheath successively from inner yearning.
3. according to the high voltage claimed in claim 1 seabed extra large cable of transmitting electricity, it is characterized in that, between single-core cable and rubber band, be provided with insulation filler, in insulation filler, be provided with optical fiber.
4. according to the high voltage claimed in claim 1 seabed extra large cable of transmitting electricity, it is characterized in that, the cross-sectional area of this sea cable is 120～150mm
2.
5. according to the high voltage claimed in claim 1 seabed extra large cable of transmitting electricity, it is characterized in that, the ground connection of described extra large cable adopts wire armoring layer to be connected with the grounding system of pylon.
6. according to the high voltage claimed in claim 1 seabed extra large cable of transmitting electricity, it is characterized in that, described extra large cable adopts the terminals of extra large cable to be connected by copper bar and drainage thread with overhead transmission line connected mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079682.5U CN203812636U (en) | 2014-02-24 | 2014-02-24 | A high-voltage submarine electric power transmission cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079682.5U CN203812636U (en) | 2014-02-24 | 2014-02-24 | A high-voltage submarine electric power transmission cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812636U true CN203812636U (en) | 2014-09-03 |
Family
ID=51451358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079682.5U Expired - Fee Related CN203812636U (en) | 2014-02-24 | 2014-02-24 | A high-voltage submarine electric power transmission cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373651A (en) * | 2016-11-11 | 2017-02-01 | 戴丽芬 | Aluminium strip protection type electric cable |
-
2014
- 2014-02-24 CN CN201420079682.5U patent/CN203812636U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373651A (en) * | 2016-11-11 | 2017-02-01 | 戴丽芬 | Aluminium strip protection type electric cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20210224 |