CN102354563A - Intelligent ultrahigh-tension environment friendly crosslinking cable for power grid and preparation method thereof - Google Patents
Intelligent ultrahigh-tension environment friendly crosslinking cable for power grid and preparation method thereof Download PDFInfo
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- CN102354563A CN102354563A CN 201110226968 CN201110226968A CN102354563A CN 102354563 A CN102354563 A CN 102354563A CN 201110226968 CN201110226968 CN 201110226968 CN 201110226968 A CN201110226968 A CN 201110226968A CN 102354563 A CN102354563 A CN 102354563A
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Abstract
The invention discloses an intelligent ultrahigh-tension environment friendly crosslinking cable for a power grid and a preparation method thereof. The cable has a structure as follows: a semiconductive conductor shielding layer, an insulating layer and a semiconductive insulation shielding layer are arranged outside a conductor in sequence; a water-blocking and buffering isolating layer is lapped on the conductor; an armor layer is formed by a thick copper wire and multimode fibres with stainless steel tubes, which are uniformly placed in the thick copper wire; and an outer sheath and a graphite layer are arranged outside the armor layer in sequence. The intelligent ultrahigh-tension environment friendly crosslinking cable is armored by using the thick copper wire and overlapped, lapped and tightened reversely by using a soft copper strip so as to simultaneously play roles in metal shielding and metal armoring and bear high short-circuit current. The multimode fibres with the stainless steel tubes are uniformly placed in the armor layer of the thick copper wire, and the stainless steel tubes can play a favorable protection role for the fibres. The multimode fibres with the stainless steel tubes are uniformly placed so as to cause little influence to electric field distribution. In addition, a plastic sleeve of the cable provided by the invention, the outer sheath of the cable, and the like are made of halogen-free low-smoke material uniformly, therefore, the cable has favorable environment friendliness property.
Description
Technical field
The invention belongs to technical field of electric wires and cables, refer in particular to a kind of used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable and preparation method thereof.
Background technology
In order to satisfy the needs that socio-economic development and development of clean energy utilize, the most optimum distribution of resources ability and the intelligent level of electrical network are in urgent need to be improved, for this reason; State Grid Corporation of China has proposed the development plan of " strong intelligent grid "; With communication information platform is support, is means with the Based Intelligent Control, comprises each link of generating, transmission of electricity, power transformation, distribution, electricity consumption and scheduling of electric power system; Cover all electric pressures, realize the height integral fusion of " flow of power, information flow, Business Stream ".
The construction of the superhigh pressure backbone network of intelligent grid need have the intelligent high pressure and the extra-high-tension cable of real-time monitoring and control, and the load according to the ampacity adjusting electrical network that calculates to strengthen the reliability and stability of cable, reaches abundant intelligence, purpose of energy saving.
Existing Optical Fiber Composite extra-high-tension cable generally is that optical fiber is placed resilient coating, and then welds or extrude aluminium sheath.This structure is not owing to take special safeguard measure to optical fiber, therefore optical fiber damaged making or install and use in the process easily.
Summary of the invention
The object of the invention is exactly to regulate for the intelligence that realizes superhigh pressure backbone network ampacity, protects the optical fiber in the cable effectively, and a kind of used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable and preparation method thereof is provided.
A kind of used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable of the present invention; It comprises the conductor that is positioned at cable center; Outside conductor, set gradually semiconductive conductor shield, insulating barrier and semiconductive insulation screen; The wrapped buffering separator that blocks water outside the semiconductive insulation screen is outside equipped with the armour that mixes placement optical fiber at the buffering separator that blocks water, and outside armour, is followed successively by oversheath and graphite linings.
The armour concrete structure that optical fiber is placed in above-mentioned mixing is: with the blister copper silk is matrix, multimode fiber is placed in the stainless steel tube, and stainless steel tube evenly is placed in the blister copper silk, and the stainless steel tube and the blister copper silk outside are with reverse overlapping wrapped the tightening of soft copper band.
In addition; The present invention also provides the preparation method of this used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable; It may further comprise the steps: at first the conductor with cable is the basis, adopts three-layer co-extruded mode to be extruded on the conductor semiconductive conductor shield, insulating barrier and semiconductive insulation screen, the wrapped then buffering separator that blocks water; Then form and mix the armour of placing optical fiber, extrude oversheath at last and apply graphite linings.
The forming process of mix placing the armour of optical fiber is: be the center of circle with the cable axis, the stainless steel tube of multimode fiber arranged in the blister copper silk, evenly placing, outside the buffering separator that blocks water, carry out armouring, and with the soft copper band along the armour outside reverse overlapping wrapped tightening.
The present invention adopts blister copper silk armouring, and with reverse overlapping wrapped the tightening of soft copper band, can play the effect of metallic shield, metal armouring simultaneously, and the metal level of this structure can bear very big short circuit current.In blister copper silk armour, evenly place the multimode fiber of band stainless steel tube, the stainless steel tube in this structure can play a very good protection to optical fiber.In addition, because Optical Fiber Transmission is light signal, therefore do not receive the influence of electromagnetic interference.The multimode fiber of band stainless steel tube is evenly placed, and is minimum to the Electric Field Distribution influence of cable, therefore do not influence the electric property of extra-high-tension cable.The oversheath of the plastic sheath of optical cable of the present invention and cable etc. evenly adopts the low smoke, zero halogen material in addition, has the favorable environment protection ability.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is stainless steel tube and the partial enlarged drawing of multimode fiber among Fig. 1.
Embodiment
As depicted in figs. 1 and 2; Of the present inventionly at first be the basis with cable conductor 1; Adopt three-layer co-extruded mode to be extruded on the cable conductor 1 semiconductive conductor shield 2, insulating barrier 3 and semiconductive insulation screen 4 then, the wrapped again buffering separator 5 that blocks water, the 50/125um multimode fiber 8 of blister copper silk 6 and the band stainless steel tube 7 evenly placed therein forms armours; And, extrude oversheath 10, coating graphite linings 11 at last with soft copper band 9 reverse overlapping wrapped tightening.
The present invention is back to Raman scattering (raman scattering) temperature effect according to optical time domain reflection (OTDR) principle of optical fiber and optical fiber mainly.When a light pulse when an end-fire of optical fiber is gone into optical fiber, this light pulse meeting is propagated forward along optical fiber.The similar minute surface of optical fiber inwall, light pulse every bit in the air all can produce reflection, and a fraction of reverberation is arranged among the reflection, and its direction is in the opposite direction with incident light just in time, the temperature correlation of pip in catoptrical intensity and the light.On cable distribution formula optical fiber temperature-measurement basis, can calculate real-time ampacity through software systems, realize the ampacity optimization configuration of cable and the economy adjustment of electric power system, give full play to the maximum potential of cable.
The effect of each part of the present invention and material:
Cable conductor 1: adopt copper conductor, cross section 800mm
2Below adopt and press round conductor, cross section 800mm
2And the above milliken conductor that adopts, to reduce kelvin effect.
Semiconductive conductor shield 2: adopt the cross-linking type semiconductive material, play the effect of uniform electric field.
Insulating barrier 3: adopt ultrapure clean crosslinked polyethylene cable insulating material, play insulating effect, guarantee the electric property of cable.
Semiconductive insulation screen 4: adopt the cross-linking type semiconductive material, play the effect of uniform electric field.
The buffering that blocks water separator 5: adopt the semiconductive type padded coaming that blocks water, the effect that play uniform electric field simultaneously, block water, cushions.
Stainless steel tube 7: optical fiber is played a very good protection.
50/125um multimode fiber 8: back according to optical time domain reflection (OTDR) principle of optical fiber and optical fiber to Raman scattering (raman scattering) temperature effect; The temperature of real-time monitoring cable, and then can calculate real-time ampacity and other relevant informations through software systems.
Soft copper band 9: the copper wire armour is played the effect of tightening, also can play certain metallic shield effect simultaneously.
Oversheath 10: adopt the low smoke, zero halogen material, have the favorable environment protection ability.
Graphite linings 11: on oversheath, apply graphite linings, supply the oversheath of finished cable to detect use.
The concrete application approach of the present invention is a lot, and the above only is a preferred implementation of the present invention, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement, these improvement also should be regarded as protection scope of the present invention.
Claims (4)
1. used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable; It is characterized in that comprising the conductor (1) that is positioned at cable center; Outside conductor (1), set gradually semiconductive conductor shield (2), insulating barrier (3) and semiconductive insulation screen (4); The wrapped buffering separator (5) that blocks water is outside equipped with the armour that mixes placement optical fiber at the buffering separator (5) that blocks water outside semiconductive insulation screen (4), outside armour, is followed successively by oversheath (10) and graphite linings (11).
2. used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable according to claim 1; The armour concrete structure that it is characterized in that said mixing placement optical fiber is: with blister copper silk (6) is matrix; Multimode fiber (8) is placed in the stainless steel tube (7); And stainless steel tube (7) evenly is placed in the blister copper silk (6), and the stainless steel tube (7) and blister copper silk (6) outside are with reverse overlapping wrapped the tightening of soft copper band (9).
3. the preparation method of the said used for intelligent electric network superhigh pressure of claim 1 an environment-friendly type crosslinked cable; It is characterized in that may further comprise the steps: at first the conductor (1) with cable is the basis; Adopt three-layer co-extruded mode to be extruded on the conductor (1) semiconductive conductor shield (2), insulating barrier (3) and semiconductive insulation screen (4); The wrapped then buffering separator (5) that blocks water; Then form and mix the armour of placing optical fiber, extrude oversheath (10) at last and apply graphite linings (11).
4. the preparation method of used for intelligent electric network superhigh pressure environment-friendly type crosslinked cable according to claim 3; It is characterized in that the forming process of mixing the armour of placing optical fiber is: be the center of circle with the cable axis; The stainless steel tube (7) that multimode fiber (8) are arranged in blister copper silk (6), evenly placing; Buffering separator (5) is outer to carry out armouring blocking water, and with soft copper band (9) along the armour outside reverse overlapping wrapped tightening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110226968 CN102354563A (en) | 2011-08-09 | 2011-08-09 | Intelligent ultrahigh-tension environment friendly crosslinking cable for power grid and preparation method thereof |
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| CN 201110226968 CN102354563A (en) | 2011-08-09 | 2011-08-09 | Intelligent ultrahigh-tension environment friendly crosslinking cable for power grid and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610320A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN103824632A (en) * | 2014-02-14 | 2014-05-28 | 申环电缆科技有限公司 | Intelligent extra-high-voltage photoelectric composite cable with built-in optical fiber |
| CN104392776A (en) * | 2014-11-26 | 2015-03-04 | 无锡江南电缆有限公司 | Twin-core cable with external protection layer |
| CN104466803A (en) * | 2014-12-31 | 2015-03-25 | 深圳供电局有限公司 | Multi-loop unequal-section cable group laying method |
| CN105225757A (en) * | 2015-11-06 | 2016-01-06 | 远程电缆股份有限公司 | One is applied to the moistureproof anti-interference frequency converter midium voltage cable of CI island novel flame-retardant |
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| CN101807453A (en) * | 2010-03-29 | 2010-08-18 | 浙江省电力公司舟山电力局 | Power cable for seabed |
| CN101847465A (en) * | 2010-04-15 | 2010-09-29 | 河北华通线缆集团有限公司 | Single-side embossing aluminum longitudinal lapping shielding waterproof power cable |
| CN201725632U (en) * | 2010-07-14 | 2011-01-26 | 开开电缆科技有限公司 | Composite submarine cable of intelligent temperature sensing optical fiber |
| CN102012285A (en) * | 2010-11-16 | 2011-04-13 | 江苏通光光电子有限公司 | Micro-sensing optical unit and embedded application thereof |
| CN201796643U (en) * | 2010-09-03 | 2011-04-13 | 宁波东方电缆股份有限公司 | High-strength armor structure for single-core high-voltage submarine cable |
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| CN101807453A (en) * | 2010-03-29 | 2010-08-18 | 浙江省电力公司舟山电力局 | Power cable for seabed |
| CN101847465A (en) * | 2010-04-15 | 2010-09-29 | 河北华通线缆集团有限公司 | Single-side embossing aluminum longitudinal lapping shielding waterproof power cable |
| CN201725632U (en) * | 2010-07-14 | 2011-01-26 | 开开电缆科技有限公司 | Composite submarine cable of intelligent temperature sensing optical fiber |
| CN201796643U (en) * | 2010-09-03 | 2011-04-13 | 宁波东方电缆股份有限公司 | High-strength armor structure for single-core high-voltage submarine cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610320A (en) * | 2012-03-28 | 2012-07-25 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN102610320B (en) * | 2012-03-28 | 2014-06-18 | 宜昌联邦电缆有限公司 | 750-1100kV extra-high voltage cross-linked polyethylene insulated and stainless steel sheathed photoelectric composite cable |
| CN103824632A (en) * | 2014-02-14 | 2014-05-28 | 申环电缆科技有限公司 | Intelligent extra-high-voltage photoelectric composite cable with built-in optical fiber |
| CN104392776A (en) * | 2014-11-26 | 2015-03-04 | 无锡江南电缆有限公司 | Twin-core cable with external protection layer |
| CN104466803A (en) * | 2014-12-31 | 2015-03-25 | 深圳供电局有限公司 | Multi-loop unequal-section cable group laying method |
| CN105225757A (en) * | 2015-11-06 | 2016-01-06 | 远程电缆股份有限公司 | One is applied to the moistureproof anti-interference frequency converter midium voltage cable of CI island novel flame-retardant |
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Application publication date: 20120215 |