CN105609206A - High-voltage transmission power cable - Google Patents
High-voltage transmission power cable Download PDFInfo
- Publication number
- CN105609206A CN105609206A CN201610192674.5A CN201610192674A CN105609206A CN 105609206 A CN105609206 A CN 105609206A CN 201610192674 A CN201610192674 A CN 201610192674A CN 105609206 A CN105609206 A CN 105609206A
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- Prior art keywords
- resistance
- wire
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- privates
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
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- 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
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- 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
- H01B7/184—Sheaths comprising grooves, ribs or other projections
-
- 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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a high-voltage transmission power cable which comprises three cores, an insulating layer, a shielding layer and a protecting layer, wherein the insulating layer and the shielding layer are sequentially arranged on the exterior of each core; the three cores are arranged in the protecting layer; a triangular fixing bracket is also arranged in the protecting layer; an arc groove is formed on each side of the triangular fixing bracket; the cores are positioned in the arc groove; and the cavity formed among the cores, the triangular fixing bracket and the protecting layer is filled with an insulating filler. The high-voltage transmission power cable also comprises a first wire, a second wire and a third wire, wherein every two of the first wire, the second wire and the third wire are tangential; and the first wire, the second wire and the third wire are arranged in the protecting layer and are parallel to the cores respectively. According to the high-voltage transmission power cable disclosed by the invention, when a thief steals the protecting layer of the power cable, the stealing place can be immediately known.
Description
The application is to be that December 10, application number in 2014 are 201410753924.9, invent the applying dateName is called the divisional application of the patent application of " high voltage power transmission power cable ".
Technical field
The present invention relates to a kind of high voltage power transmission power cable, belong to high voltage power transmission technical field.
Background technology
Along with the fast development of national economy, as consumption and the use model of the aortal power cable of national economyEnclose increasing. Power cable is the cable for transmitting and distribute electric energy. Be usually used in Urban Underground electrical network, send outThe lead line in power station, the in-line power of industrial and mining enterprises and cross river, the submarine transmission line in sea excessively. At power circuitIn, the shared proportion of power cable increases just gradually. Power cable be in the basic routing line of power system in order toThe cable product of transmission and distribution high-power power, comprising 1-500KV and above various electric pressure,The power cable of various insulation.
The basic structure of power cable is made up of core (conductor), insulating barrier, screen layer and protective layer four parts.Core is the current-carrying part of power cable, is used for transmission of electric energy, is the major part of power cable. Insulating barrier isTo between core and the earth and out of phase core, on electric, be isolated from each other, ensure power delivery, is electric power electricityIndispensable part in cable structure. Screen layer, because the current ratio that electric power cable passes through is larger, electric currentCan produce magnetic field around, in order not affect other element, so add screen layer can this electromagnetic-field-shieldedIn cable. The effect of protective layer is the intrusion that protection power cable is avoided introduced contaminants and moisture, and outside preventingPower is directly damaged power cable.
Power cable can be divided into core and overcoat structure, and (overcoat refers to insulating barrier, screen layer and protectionLayer) two large divisions, be positioned at the core of innermost layer for electric energy transmitting, the overcoat being rolled in outside core has multilayerStructure, realizes respectively the functions such as shielding, insulation, anti-outside destroy. At high pressure and above defeated, power distribution network, byHigher in voltage, theft live electric cable often can cause thief's injures and deaths, and therefore, robber steals power circuit nowNot the copper material that aims at wire, occurred in this year the stolen thing of a lot of 10kV power cable overcoatPart. Because cable laying is hidden, and the anti-system of prison is not set, does not cause power failure therefore cable protective layer is stolenAnd short circuit accident be difficult for be found, but left very large potential safety hazard. After some cable protective layers are stolen,Although temporarily do not occur to have a power failure or personnel casualty accidents, cable insulation degree of protection declines to a great extent, and operatesVoltage, lightning surge, harmonic wave overvoltage, personnel trample, damaged by rats, all will trigger short circuit, a certain phase short circuitBlast, often causes many feeder lines short circuit simultaneously of laying in one ditch, causes large-area power-cuts, as can be seen here,Robber has buried the serious potential safety hazard in many places to power system. Because the cable of many overcoats after stolen buriesEnsconce undergroundly, power department does not have the security situation of special monitoring of equipment cable so far, cannot learn electric power electricityThe overcoat of cable is destroyed, thereby can not adopt remedial measures in time, makes power system and periphery personnel and environmentSafety be subject to serious threat.
By above description, can find just can stand in theft power cable overcoat for robberThe place of finding and navigate to theft quarter is the problem that is worth very much research.
It is exactly A phase, B phase, C phase that existing three-phase high-voltage transmission of electricity power cable also exists a very large defectWire is all cylindrical, each easily occurs sliding friction between mutually, of long duration easily causes short circuit between each phase.
Summary of the invention
The technical problem to be solved in the present invention is: the first, and robber steals the overcoat of high voltage power transmission power cableIn time, is difficult to be found, and has left very large potential safety hazard to transmission line of electricity, can't steal high pressure robber at presentWhen transmission of electricity power cable overcoat, just find at once theft place. The second, existing three-phase high-voltage transmission of electricity electricityPower cable also exist a very large defect be exactly A phase, B phase, C phase conductor be all cylindrical, each mutually betweenEasily there is sliding friction, of long duration easily cause short circuit between each phase.
Solve above technical problem in order to realize, the technical solution adopted in the present invention is: high voltage power transmission electric power electricityCable, comprises three cores, insulating barrier, screen layer, protective layer; The outside of every core set gradually insulating barrier,Screen layer; Three cores are arranged at the inside of protective layer; Protective layer inside is also provided with triangle fixed support;Described triangle all arranges circular groove on support bracket fastened every one side; Core is positioned at circular groove;The cavity forming between described core, triangle fixed support and protective layer is filled insulation filler;
Also comprise the first wire, the second wire, privates; Described the first wire, the second wire, the 3rdThe external diameter of wire is tangent between two; Described the first wire, the second wire, privates are arranged in protective layer;Described the first wire, the second wire, privates are parallel with core respectively;
Also comprise the first resistance, the second resistance, the 3rd resistance, an AD unit, the 2nd AD unit,Three AD unit, controller, display unit, alarm unit, the first dc source, the second dc source;
The left end of the first described wire is electrically connected one end of the first resistance, the other end of the first resistance electrical connection theThe positive terminals of one dc source, the negative terminals of the first dc source are electrically connected one end of the second resistance, secondThe other end of resistance is electrically connected the left end of the second wire;
The negative terminals of the first dc source are electrically connected the positive terminals of the second dc source simultaneously; The second direct currentOne end of negative terminals electrical connection the 3rd resistance in source, a left side for the other end electrical connection privates of the 3rd resistanceEnd;
The right-hand member of described the first wire, the second wire, privates does not contact each other, and all arrangesThere is insulation protective jacket;
The voltage signal at the first resistance two ends is input to controller by the one AD unit;
The voltage signal at the second resistance two ends is input to controller by the 2nd AD unit;
The voltage signal at the 3rd resistance two ends is input to controller by the 3rd AD unit;
The input of display unit is connected with the display output port of controller;
The input of alarm unit is connected with the alarm signal output ends mouth of controller.
Further, the resistance of the first described resistance, the second resistance and the 3rd resistance equates.
Further, the resistance of the first described resistance, the second resistance and the 3rd resistance is 1 ohm.
Further, the external diameter of described the first wire, the second wire and privates equates, and insulating layer thicknessDegree is all less than 3mm.
Further, the thickness of insulating layer of the first described wire, the second wire and privates is 1mm.
Further, the first described dc source equates with the voltage of the second dc source, thereby is convenient to analysis meterCalculate theft point.
Further, described controller adopts AT89S52 chip microcontroller.
Further, described display unit adopts LCD1864 display screen, the theft that controller is calculated pointShow.
Further, described alarm unit adopts buzzer warning. Can there is robber to exist by sound prompting like thisTheft power cable.
Further, a described AD unit, the 2nd AD unit, the 3rd AD unit all adopt ADC0809Chip.
Compared with prior art, the invention has the advantages that: high voltage power transmission power cable provided by the invention,When the place that just can immediately know theft that time that robber steals power cable overcoat, effectively protectThe safety of transmission line of electricity; Meanwhile, because robber wants to steal core, must first destroy protective layer, so thisThe power cable of invention has also effectively prevented that robber from stealing power cable core, and is not yet forming closed-loop pathTime do not consume electric energy. Meanwhile, power cable A phase, B phase, C fix firmly, do not contact each other,There will not be the phenomenon of sliding friction, the short circuit problem that therefore there will not be friction to cause.
Brief description of the drawings
Fig. 1 is the structural representation of high voltage power transmission power cable of the present invention.
Wherein, the 1st, core; The 2nd, insulating barrier; The 3rd, screen layer; The 4th, protective layer; The 9th, fixing of triangleFrame.
Fig. 2 is three tangent schematic diagrames of wire in protective layer.
Wherein, 5 is first wires; 6 is second wires; The 7th, privates; The 8th, protective layer.
Fig. 3 is the theft point Real-Time Monitoring circuit theory schematic diagram the present invention relates to.
Detailed description of the invention
Below in conjunction with accompanying drawing, invention is described in further detail.
With reference to Fig. 1,2,3, high voltage power transmission power cable, comprise three cores, insulating barrier, screen layer,Protective layer; The outside of every core sets gradually insulating barrier, screen layer; Three cores be arranged at protective layer inPortion; Protective layer inside is also provided with triangle fixed support; Equal on the support bracket fastened every one side of described triangleCircular groove is set; Core is positioned at circular groove; Described core, triangle fixed support and protectionThe cavity forming between layer is filled insulation filler; Also comprise the first wire, the second wire, privates; InstituteThe external diameter of the first wire of stating, the second wire, privates is tangent between two; Described the first wire, second is ledLine, privates are arranged in protective layer; Described the first wire, the second wire, privates respectively with lineCore is parallel; Also comprise the first resistance, the second resistance, the 3rd resistance, an AD unit, the 2nd AD unit,The 3rd AD unit, controller, display unit, alarm unit, the first dc source, the second dc source;The left end of the first described wire is electrically connected one end of the first resistance, and it is first straight that the other end of the first resistance is electrically connectedThe positive terminals of stream power supply, the negative terminals of the first dc source are electrically connected one end of the second resistance, the second resistanceThe other end be electrically connected the left end of the second wire; The negative terminals of the first dc source are electrically connected the second direct current simultaneouslyThe positive terminals of power supply; One end of negative terminals electrical connection the 3rd resistance of the second dc source, the 3rd resistanceThe left end of other end electrical connection privates; The right-hand member phase of described the first wire, the second wire, privatesMutually, do not contact, and be provided with insulation protective jacket; The one AD unit is by the voltage at the first resistance two endsSignal is input to controller; The voltage signal at the second resistance two ends is input to controller by the 2nd AD unit; TheThe voltage signal at the 3rd resistance two ends is input to controller by three AD unit; The input of display unit and controlThe display output port of device is connected; The alarm signal output ends mouth phase of the input of alarm unit and controllerConnect.
Wherein, described controller adopts AT89S52 chip microcontroller. Described display unit adopts LCD1864Display screen, described alarm unit adopts buzzer warning, can have robber in theft by sound prompting like thisPower cable, and the theft place of calculating is shown by LCD1864 display screen. DescribedOne AD unit, the 2nd AD unit, the 3rd AD unit all adopt ADC0809 chip.
Wherein, the external diameter of described the first wire, the second wire and privates is 3cm, wherein wireThickness of insulating layer be 1mm.
In the present embodiment, the length of power cable is 2000 meters, the first wire so, and the second wire, the 3rd leadsThe length of line is also just respectively 2000 meters, the first wire, and the second wire, the resistance of privates is respectively 10Ohm, the voltage of the first dc source and the second dc source is all selected 30V, the first resistance, the second resistance,The 3rd resistance is 1 ohm, thereby has guaranteed the first resistance, the second resistance, and the voltage at the 3rd resistance two ends is notCan exceed 5V, AD unit could normal work like this.
The present invention can realize the principle of theft point Real-Time Monitoring: no matter robber steals the core of power cable,Still the overcoat (overcoat comprises insulating barrier, screen layer and protective layer) of stealing power cable, so all needsWill first destroy protective layer, because protective layer is durable, generally be not easy to destroy, therefore robber must adopt goldBelong to shear and cut off protective layer, and protective layer the inside is provided with the first wire, the second wire, privates, byIn the first wire, the second wire, the external diameter of privates between two insulating barrier tangent and wire is all very thin,In the time adopting scissors to cut off protective layer, be bound to the first wire, the second wire, privates is also cut off,Exactly at scissors by the first wire, the second wire, privates is cut off at that moment, the first wire, secondWire, the conductor dbus of privates inside is crossed metal shear and is connected to one, at least has leading of two wiresKnow from experience and be electrically connected by metal shear, also the conductor of three wires of possibility all can pass through metal shear electricityCouple together.
At this time, the circuit in the present invention has just formed closed-loop path, is likely that the first wire and second is ledLine forms closed-loop path, is likely also that the second wire and privates form closed-loop path, also likely simultaneouslyForm two closed-loop paths. Once controller detects the first resistance, there is electricity at the second resistance or the 3rd resistance two endsPress and just can judge have robber stealing power cable.
If just the first wire and the second wire have formed closed-loop path;
First, the voltage by the first resistance two ends, divided by the resistance of the first resistance, obtains the electric current of closed-loop path;
Secondly, the voltage of the first dc source, divided by the electric current of closed-loop path, has calculated total electricity of closed-loop pathResistance, all-in resistance deducts the resistance of the first resistance and the second resistance, obtains total electricity of the first wire and the second wireResistance;
Finally, by formula R=ρ L/S, thereby calculate theft place. (ρ and S are known parameters).
Claims (2)
1. high voltage power transmission power cable, comprises three cores, insulating barrier, screen layer, protective layer; Every lineThe outside of core sets gradually insulating barrier, screen layer; Three cores are arranged at the inside of protective layer; It is characterized in that,Protective layer inside is also provided with triangle fixed support; On the support bracket fastened every one side of described triangle, all arrangeCircular groove; Core is positioned at circular groove; Described core, triangle fixed support and protective layer itBetween form cavity fill insulation filler;
Also comprise the first wire, the second wire, privates; Described the first wire, the second wire, the 3rdThe external diameter of wire is tangent between two; Described the first wire, the second wire, privates are arranged in protective layer;Described the first wire, the second wire, privates are parallel with core respectively;
Also comprise the first resistance, the second resistance, the 3rd resistance, an AD unit, the 2nd AD unit,Three AD unit, controller, display unit, alarm unit, the first dc source, the second dc source;
The left end of the first described wire is electrically connected one end of the first resistance, the other end of the first resistance electrical connection theThe positive terminals of one dc source, the negative terminals of the first dc source are electrically connected one end of the second resistance, secondThe other end of resistance is electrically connected the left end of the second wire;
The negative terminals of the first dc source are electrically connected the positive terminals of the second dc source simultaneously; The second direct currentOne end of negative terminals electrical connection the 3rd resistance in source, a left side for the other end electrical connection privates of the 3rd resistanceEnd;
The right-hand member of described the first wire, the second wire, privates does not contact each other, and all arrangesThere is insulation protective jacket;
The voltage signal at the first resistance two ends is input to controller by the one AD unit;
The voltage signal at the second resistance two ends is input to controller by the 2nd AD unit;
The voltage signal at the 3rd resistance two ends is input to controller by the 3rd AD unit;
The input of display unit is connected with the display output port of controller;
The input of alarm unit is connected with the alarm signal output ends mouth of controller;
The resistance of described the first resistance, the second resistance and the 3rd resistance equates; Described the first resistance, the second resistanceBe 1 ohm with the resistance of the 3rd resistance;
The external diameter of described the first wire, the second wire and privates equates for 3cm, and described first leadsThe thickness of insulating layer of line, the second wire and privates is 1mm.
2. high voltage power transmission power cable according to claim 1, is characterized in that, when just first leadingLine and the second wire have formed closed-loop path;
First, the voltage by the first resistance two ends, divided by the resistance of the first resistance, obtains the electric current of closed-loop path;
Secondly, the voltage of the first dc source, divided by the electric current of closed-loop path, has calculated total electricity of closed-loop pathResistance, all-in resistance deducts the resistance of the first resistance and the second resistance, obtains total electricity of the first wire and the second wireResistance;
Finally, by formula R=ρ L/S, thereby calculate theft place; Wherein, ρ and S are knownParameter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410753924.9A CN104392788A (en) | 2014-12-10 | 2014-12-10 | Power cable for high-voltage power transmission |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410753924.9A Division CN104392788A (en) | 2014-12-10 | 2014-12-10 | Power cable for high-voltage power transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105609206A true CN105609206A (en) | 2016-05-25 |
Family
ID=52610672
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610188578.3A Pending CN105609205A (en) | 2014-12-10 | 2014-12-10 | High-voltage power transmission cable |
| CN201410753924.9A Pending CN104392788A (en) | 2014-12-10 | 2014-12-10 | Power cable for high-voltage power transmission |
| CN201610192674.5A Pending CN105609206A (en) | 2014-12-10 | 2014-12-10 | High-voltage transmission power cable |
| CN201610192723.5A Pending CN105702364A (en) | 2014-12-10 | 2014-12-10 | High-voltage transmission power cable |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610188578.3A Pending CN105609205A (en) | 2014-12-10 | 2014-12-10 | High-voltage power transmission cable |
| CN201410753924.9A Pending CN104392788A (en) | 2014-12-10 | 2014-12-10 | Power cable for high-voltage power transmission |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610192723.5A Pending CN105702364A (en) | 2014-12-10 | 2014-12-10 | High-voltage transmission power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN105609205A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117259483A (en) * | 2023-11-22 | 2023-12-22 | 烟台鼎宸铜业有限公司 | Tinned copper wire winding mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258525Y (en) * | 1994-09-30 | 1997-07-30 | 吕杰 | Alarm rope lock |
| JPH11167820A (en) * | 1997-12-03 | 1999-06-22 | Yazaki Corp | Short detecting electric wire and its manufacture |
| CN201117323Y (en) * | 2007-08-29 | 2008-09-17 | 王世祥 | Anti-theft cable |
| US20120105230A1 (en) * | 2010-10-27 | 2012-05-03 | Thomas Bockstoce | Anti-theft sensor system |
| CN203673846U (en) * | 2013-12-10 | 2014-06-25 | 深圳市奔达康电缆股份有限公司 | Cable containing precision metal wires and plastic material which can become ceramic in burning |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989470A (en) * | 2009-08-06 | 2011-03-23 | 广东科能通用电气有限公司 | Anti-theft cable |
| CN201868142U (en) * | 2010-10-20 | 2011-06-15 | 申祥龙 | Burglar alarm power cable |
| CN203444813U (en) * | 2013-07-16 | 2014-02-19 | 江苏亨通线缆科技有限公司 | Starlike distributed cable |
-
2014
- 2014-12-10 CN CN201610188578.3A patent/CN105609205A/en active Pending
- 2014-12-10 CN CN201410753924.9A patent/CN104392788A/en active Pending
- 2014-12-10 CN CN201610192674.5A patent/CN105609206A/en active Pending
- 2014-12-10 CN CN201610192723.5A patent/CN105702364A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258525Y (en) * | 1994-09-30 | 1997-07-30 | 吕杰 | Alarm rope lock |
| JPH11167820A (en) * | 1997-12-03 | 1999-06-22 | Yazaki Corp | Short detecting electric wire and its manufacture |
| CN201117323Y (en) * | 2007-08-29 | 2008-09-17 | 王世祥 | Anti-theft cable |
| US20120105230A1 (en) * | 2010-10-27 | 2012-05-03 | Thomas Bockstoce | Anti-theft sensor system |
| CN203673846U (en) * | 2013-12-10 | 2014-06-25 | 深圳市奔达康电缆股份有限公司 | Cable containing precision metal wires and plastic material which can become ceramic in burning |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117259483A (en) * | 2023-11-22 | 2023-12-22 | 烟台鼎宸铜业有限公司 | Tinned copper wire winding mechanism |
| CN117259483B (en) * | 2023-11-22 | 2024-01-26 | 烟台鼎宸铜业有限公司 | Tinned copper wire winding mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104392788A (en) | 2015-03-04 |
| CN105702364A (en) | 2016-06-22 |
| CN105609205A (en) | 2016-05-25 |
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Application publication date: 20160525 |
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