CN105609208A - High-voltage transmission power cable - Google Patents
High-voltage transmission power cable Download PDFInfo
- Publication number
- CN105609208A CN105609208A CN201610201827.8A CN201610201827A CN105609208A CN 105609208 A CN105609208 A CN 105609208A CN 201610201827 A CN201610201827 A CN 201610201827A CN 105609208 A CN105609208 A CN 105609208A
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- Prior art keywords
- conductor
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- point detection
- breaking point
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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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/023—Alloys based on aluminium
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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
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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
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
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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
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a high-voltage transmission power cable which comprises three conductors, a conductor shielding layer, an insulating layer and a protecting layer, wherein the conductor shielding layer is arranged on the exterior of the conductor; the insulating layer is arranged on the exterior of the conductor shielding layer; and the three conductors are arranged in the protecting layer. The high-voltage transmission power cable also comprises a cylindrical fixing device, wherein the cylindrical fixing device is positioned in the protecting layer; three arc grooves are formed in the side surface of the cylindrical fixing device in equal intervals; the three conductors are positioned in the arc grooves respectively; the cavity formed among the conductors, the cylindrical fixing device and the protecting layer is filled with an insulating filler; the high-voltage transmission power cable also comprises a far-end breakpoint detection unit and N terminal breakpoint detection units; the N terminal breakpoint detection units are arranged on a high-voltage transmission power cable line in equal intervals; and N is greater than or equal to 2. According to the power cable disclosed by the invention, the problem of short circuit caused by friction is avoided; in the case of open circuit of the power cable, the open circuit point can be quickly judged; and the core hardness is high, and the electrical resistivity is low.
Description
The application is to be on October 15th, 2014 applying date, and application number is 201410546912.9, inventionName is called the divisional application of the patent application of high voltage power transmission power cable.
Technical field
The present invention relates to high voltage power transmission technical field, be specifically related to high voltage power transmission power cable.
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.
Existing three-phase electrical cable exist a very large defect be exactly A phase, B phase, C phase conductor be all roundCylindricality, between so each phase, easily sliding friction, of long duration, easily occurs short circuit between each phase.
Three-phase electrical cable also has a problem to be exactly, once there is the problem that opens circuit, is very difficult to search trip point,Thereby can cause long-time large-area power-cuts phenomenon.
The core of existing power cable generally adopts aluminum alloy materials preparation, and the hardness of aluminum alloy materials is inadequateHeight, so just add other composition in aluminum alloy materials, improves hardness, but can cause resistivity largeAmplitude rises.
Summary of the invention
The technical problem to be solved in the present invention: the first, the A phase of existing three-phase electrical cable, B phase, CMutually, easily there is the phenomenon of sliding friction, just there will be short circuit once insulating barrier of long duration has been ground away;
The second, once the problem that opens circuit appears in power cable, be very difficult to search trip point, thereby can cause length timeBetween large-area power-cuts phenomenon.
The 3rd, the core of existing power cable generally adopts aluminum alloy materials preparation, and aluminum alloy materials is hardSpend not high enough, so just in aluminum alloy materials, add other composition, make hardness improve, but can cause electricityResistance rate significantly rises.
In order to solve above technical problem, technical scheme of the present invention is as follows:
High voltage power transmission power cable, comprises 3 conductors, conductor shield, insulating barrier, protective layer; Conductor screenCover a layer outside that is arranged on conductor, insulating barrier is arranged on the outside of conductor shield, and 3 conductors are arranged at protectionIn layer; Also comprise cylindrical fixture, cylindrical fixture is positioned at protective layer; Described is cylindrical solidThe side spaced set of determining device has 3 circular grooves; It is recessed that 3 described conductors lay respectively at circular arcGroove; The cavity forming between described conductor, cylindrical fixture, protective layer is filled insulation filler;
Also comprise far-end breaking point detection unit, a N terminal breaking point detection unit; Described N terminal breakpoint inspectionMeasurement unit spaced set is on high voltage power transmission power cable line; N >=2;
Wherein, N terminal breaking point detection unit is from left end to right-hand member successively called after: the 1st terminal breaking point detectionUnit, i terminal breaking point detection unit, N terminal breaking point detection unit; 1≤i≤N;
Described far-end breaking point detection unit comprise master controller unit, total wireless communication unit, keyboard unit,Display unit; Total wireless communication unit, keyboard unit, display unit respectively with the IO mouth of master controller unitBe connected;
Described terminal breaking point detection unit comprises 3 conductiving metal strips, the first switch, second switch, the 3rdSwitch, controller unit, wireless communication unit;
Wherein, 3 conductor called afters: the first conductor, the second conductor, the 3rd conductor; 3 conductiving metal stripsCalled after: the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip;
The first conductiving metal strip is through conductor shield, insulating barrier, protective layer, one of the first conductiving metal stripEnd electrical connection the first conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch one end andOne end of second switch;
The second conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the second conductiving metal stripBe electrically connected the second conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch the other end andOne end of the 3rd switch;
The 3rd conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the 3rd conductiving metal stripBe electrically connected the 3rd conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously second switch the other end andThe other end of the 3rd switch;
The outer surface of described the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip all arrangesThere is insulating barrier;
The first switch, second switch, the 3rd switch all contain control end, the first switch, second switch, the 3rdThe control end of switch is connected with the IO mouth of controller unit respectively;
Controller unit and master controller unit communication.
Wherein, described conductor adopts aluminum alloy materials to be prepared from, and the weight proportion of this aluminum alloy materials is as follows:Aluminium: 1000 parts; Lutetium: 1-4 part; Manganese: 12-15 part;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, process stirring,Hexachloro-benzene refinery by de-gassing, uses conticaster direct casting, and direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm.
The technical scheme being more preferably, described total wireless communication unit, wireless communication unit all adopt gprsCommunication module.
The technical scheme being more preferably, described display unit adopts charactron to show.
The technical scheme being more preferably, described master controller unit and controller unit all adopt MSP430Single-chip microcomputer.
The technical scheme being more preferably, described the first switch, second switch, the 3rd switch all adopt relay.
The technical scheme being more preferably, described the first switch, second switch, the 3rd switch all adopt controlled crystalline substanceBrake tube.
Compared with prior art scheme, beneficial effect of the present invention: the first, power cable A phase of the present invention,B phase, C fix firmly, do not contact each other, there will not be the phenomenon of sliding friction, therefore can not go outThe short circuit problem that now friction causes; The second, once the problem that opens circuit appears in power cable, can judge very soon disconnectedWaypoint, has solved because the long-time large-area power-cuts problem that power cable breaking causes.
The 3rd, the core conductor of power cable of the present invention adopts aluminum alloy materials preparation, and that improves in hardness is sameTime, resistivity reduces on the contrary.
Brief description of the drawings
Fig. 1 is the structural representation of power cable of the present invention.
Wherein, the 1st, conductor, the 2nd, conductor shield, the 3rd, insulating barrier, the 4th, cylindrical fixture, 5 protectSheath.
Fig. 2 is the connection diagram of power cable switch sections of the present invention.
Fig. 3 is the circuit theory square frame signal of far-end breaking point detection unit of the present invention and terminal breaking point detection unitFigure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: high voltage power transmission power cable, comprises 3 conductors, conductor shield, insulating barrier, protectionLayer; Conductor shield is arranged on the outside of conductor, and insulating barrier is arranged on the outside of conductor shield, 3 conductorsBe arranged in protective layer; Also comprise cylindrical fixture, cylindrical fixture is positioned at protective layer; DescribedThe side spaced set of cylindrical fixture have 3 circular grooves; 3 described conductors position respectivelyIn circular groove; The cavity forming between described conductor, cylindrical fixture, protective layer is filled insulationFiller; Also comprise far-end breaking point detection unit, 6 terminal breaking point detection unit; 6 described terminals are disconnectedPoint detecting unit spaced set is on high voltage power transmission power cable line;
Wherein, 6 terminal breaking point detection unit are from left end to right-hand member successively called after: the 1st terminal breaking point detectionUnit, the 2nd terminal breaking point detection unit, the 3rd terminal breaking point detection unit, the 4th terminal breaking point detection unit,The 5th terminal breaking point detection unit, the 6th terminal breaking point detection unit;
Described far-end breaking point detection unit comprise master controller unit, total wireless communication unit, keyboard unit,Display unit; Total wireless communication unit, keyboard unit, display unit respectively with the IO mouth of master controller unitBe connected;
Described terminal breaking point detection unit comprises 3 conductiving metal strips, the first switch, second switch, the 3rdSwitch, controller unit, wireless communication unit;
Wherein, 3 conductor called afters: the first conductor, the second conductor, the 3rd conductor; 3 conductiving metal stripsCalled after: the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip;
The first conductiving metal strip is through conductor shield, insulating barrier, protective layer, one of the first conductiving metal stripEnd electrical connection the first conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch one end andOne end of second switch;
The second conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the second conductiving metal stripBe electrically connected the second conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch the other end andOne end of the 3rd switch;
The 3rd conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the 3rd conductiving metal stripBe electrically connected the 3rd conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously second switch the other end andThe other end of the 3rd switch;
The outer surface of described the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip all arrangesThere is insulating barrier;
The first switch, second switch, the 3rd switch all contain control end, the first switch, second switch, the 3rdThe control end of switch is connected with the IO mouth of controller unit respectively;
Controller unit and master controller unit communication.
Wherein, described total wireless communication unit, wireless communication unit all adopt gprs communication module; ShowUnit adopts charactron to show; Master controller unit and controller unit all adopt MSP430 single-chip microcomputer. FirstSwitch, second switch, the 3rd switch all adopt relay.
Wherein, described conductor adopts aluminum alloy materials to be prepared from, and the weight proportion of this aluminum alloy materials is as follows:Aluminium: 1000 parts; Lutetium: 1 part; Manganese: 12 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, process stirring,Hexachloro-benzene refinery by de-gassing, uses conticaster direct casting, and direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm.
Embodiment 2:
On the basis of embodiment 1, the first switch, second switch, the 3rd switch all adopt controlled thyristor.
Wherein, described conductor adopts aluminum alloy materials to be prepared from, and the weight proportion of this aluminum alloy materials is as follows:Aluminium: 1000 parts; Lutetium: 2 parts; Manganese: 13 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, process stirring,Hexachloro-benzene refinery by de-gassing, uses conticaster direct casting, and direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm.
Embodiment 3:
Other and embodiment 1 are just the same, and wherein, described conductor adopts aluminum alloy materials to be prepared from,The weight proportion of this aluminum alloy materials is as follows:
Aluminium: 1000 parts; Lutetium: 3 parts; Manganese: 14 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, through stirringMix, hexachloro-benzene refinery by de-gassing, use conticaster direct casting, direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm.
Embodiment 4:
Other and embodiment 1 are just the same, and wherein, described conductor adopts aluminum alloy materials to be prepared from,The weight proportion of this aluminum alloy materials is as follows:
Aluminium: 1000 parts; Lutetium: 4 parts; Manganese: 15 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, through stirringMix, hexachloro-benzene refinery by de-gassing, use conticaster direct casting, direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm.
In above 4 embodiment, the changing value of resistivity and hardness is as shown in table 1:
Table 1:
Can find that by above table 1 aluminium alloy conductor hardness of the present invention obviously promotes, resistivity is fallen on the contraryLow, so the power cable conductor performance that aluminium alloy conductor of the present invention is made obviously promotes.
Adopt the method for invention power cable system searching trip point as follows:
1, successively the first conductor of high voltage power transmission power cable left end and the second conductor, the first conductor and the 3rd are ledThe end of body, the second conductor and the 3rd conductor applies 120V DC voltage, the direct current of simultaneously connecting in circuitAmmeter;
2, send to the controller of N/2 terminal breaking point detection unit by keyboard unit control master controller unitSwitch closure and ON-and OFF-command; In the time that 120V DC voltage is applied to the end of the first conductor and the second conductor,Closed first switch of controller control of N/2 terminal breaking point detection unit, interval is controlled and is disconnected first for 10 secondsSwitch; In the time that 120V DC voltage is applied to the end of the first conductor and the 3rd conductor, N/2 terminal breakpointThe controller control closed second switch of detecting unit, interval is controlled and is disconnected second switch for 10 seconds; Work as 120VWhen DC voltage is applied to the end of the second conductor and the 3rd conductor, the control of N/2 terminal breaking point detection unitClosed the 3rd switch of device control, interval is controlled and is disconnected the 3rd switch for 10 seconds;
If 3 DC ammeters have reading entirely, the right side of trip point in N/2 terminal breaking point detection unit is described;If DC ammeter is not entirely to have reading, the left side of trip point in N/2 terminal breaking point detection unit is described;
If 4 trip points are on the right side of N/2 terminal breaking point detection unit, by keyboard unit control master controlDevice processed unit is to controller transmit button closure and the ON-and OFF-command of N/2+1 terminal breaking point detection unit; WhenWhen 120V DC voltage is applied to the end of the first conductor and the second conductor, N/2+1 terminal breaking point detection listClosed first switch of controller control of unit, interval is controlled and is disconnected the first switch for 10 seconds; When 120V DC voltageWhile being applied to the end of the first conductor and the 3rd conductor, the controller control of N/2+1 terminal breaking point detection unitClosed second switch, interval is controlled and is disconnected second switch for 10 seconds; When 120V DC voltage is applied to the second conductorDuring with the end of the 3rd conductor, closed the 3rd switch of the controller control of N/2+1 terminal breaking point detection unit,Interval is controlled and is disconnected the 3rd switch for 10 seconds;
If trip point is in the left side of N/2 terminal breaking point detection unit, by keyboard unit control master controlDevice unit is to controller transmit button closure and the ON-and OFF-command of N/2-1 terminal breaking point detection unit; Work as 120VWhen DC voltage is applied to the end of the first conductor and the second conductor, the control of N/2-1 terminal breaking point detection unitClosed the first switch of device control processed, interval is controlled and is disconnected the first switch for 10 seconds; When 120V DC voltage is applied toWhen the end of the first conductor and the 3rd conductor, the controller control closure of N/2-1 terminal breaking point detection unitTwo switches, interval is controlled and is disconnected second switch for 10 seconds; When 120V DC voltage is applied to the second conductor and the 3rdWhen the end of conductor, closed the 3rd switch of the controller control of N/2-1 terminal breaking point detection unit, intervalWithin 10 seconds, control and disconnect the 3rd switch;
5, the method with step 4 according to step 3, until find the position of trip point;
If when 6 first switches and second switch are closed, DC ammeter does not all have reading, and trip point is describedAt the first conductor; If when the first switch and the 3rd switch are closed, DC ammeter does not all have reading, illustrate disconnectedWaypoint is at the second conductor; If when second switch and the 3rd switch are closed, DC ammeter does not all have reading, saysWhich root conductor is the waypoint of passing judgement, at the 3rd conductor, be positioned at thereby find out trip point.
Claims (2)
1. high voltage power transmission power cable, comprises 3 conductors, conductor shield, insulating barrier, protective layer; LeadBody screen layer is arranged on the outside of conductor, and insulating barrier is arranged on the outside of conductor shield, and 3 conductors are arranged atIn protective layer; It is characterized in that, also comprise cylindrical fixture, cylindrical fixture is positioned at protective layer;The side spaced set of described cylindrical fixture has 3 circular grooves; 3 described conductors divideBe not positioned at circular groove; The cavity forming between described conductor, cylindrical fixture, protective layer is filledInsulation filler;
Also comprise far-end breaking point detection unit, a N terminal breaking point detection unit; Described N terminal breakpoint inspectionMeasurement unit spaced set is on high voltage power transmission power cable line; N >=2;
Described far-end breaking point detection unit comprise master controller unit, total wireless communication unit, keyboard unit,Display unit; Total wireless communication unit, keyboard unit, display unit respectively with the IO mouth of master controller unitBe connected;
Described terminal breaking point detection unit comprises 3 conductiving metal strips, the first switch, second switch, the 3rdSwitch, controller unit, wireless communication unit;
Wherein, 3 conductor called afters: the first conductor, the second conductor, the 3rd conductor; 3 conductiving metal stripsCalled after: the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip;
The first conductiving metal strip is through conductor shield, insulating barrier, protective layer, one of the first conductiving metal stripEnd electrical connection the first conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch one end andOne end of second switch;
The second conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the second conductiving metal stripBe electrically connected the second conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously the first switch the other end andOne end of the 3rd switch;
The 3rd conductiving metal strip is through conductor shield, insulating barrier, protective layer, one end of the 3rd conductiving metal stripBe electrically connected the 3rd conductor, the other end be positioned at the outside of protective layer and be electrically connected simultaneously second switch the other end andThe other end of the 3rd switch;
The outer surface of described the first conductiving metal strip, the second conductiving metal strip, the 3rd conductiving metal strip all arrangesThere is insulating barrier;
The first switch, second switch, the 3rd switch all contain control end, the first switch, second switch, the 3rdThe control end of switch is connected with the IO mouth of controller unit respectively;
Controller unit and master controller unit communication;
Wherein, described conductor adopts aluminum alloy materials to be prepared from, the weight proportion of this aluminum alloy materials asUnder:
Aluminium: 1000 parts; Lutetium: 4 parts; Manganese: 15 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 830 DEG C, through stirringMix, hexachloro-benzene refinery by de-gassing, use conticaster direct casting, direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 35mm 420 DEG C of hot extrusions;
Again then, carry out the annealing in process of 50 hours at 420 DEG C;
Finally, adopt drawing machine by the drawing of 8 times, be prepared into the aluminium lutetium manganese alloy wire of Φ 4mm;
Described total wireless communication unit, wireless communication unit all adopt gprs communication module; Described demonstrationUnit adopts charactron to show; Described master controller unit and controller unit all adopt MSP430 monolithicMachine; Described the first switch, second switch, the 3rd switch all adopt relay.
2. high voltage power transmission power cable according to claim 1, is characterized in that, power cable systemThe method of searching trip point is as follows:
1) successively by the first conductor of high voltage power transmission power cable left end and the second conductor, the first conductor and the 3rdThe end of conductor, the second conductor and the 3rd conductor applies 120V DC voltage, connects one directly in circuit simultaneouslyStream ammeter;
2) send out to the controller of N/2 terminal breaking point detection unit by keyboard unit control master controller unitSend switch closure and ON-and OFF-command; In the time that 120V DC voltage is applied to the end of the first conductor and the second conductor,Closed first switch of controller control of N/2 terminal breaking point detection unit, interval is controlled and is disconnected first for 10 secondsSwitch; In the time that 120V DC voltage is applied to the end of the first conductor and the 3rd conductor, N/2 terminal breakpointThe controller control closed second switch of detecting unit, interval is controlled and is disconnected second switch for 10 seconds; Work as 120VWhen DC voltage is applied to the end of the second conductor and the 3rd conductor, the control of N/2 terminal breaking point detection unitClosed the 3rd switch of device control, interval is controlled and is disconnected the 3rd switch for 10 seconds;
3) if DC ammeter has reading entirely, the right side of trip point in N/2 terminal breaking point detection unit is describedSide; If DC ammeter is not entirely to have reading, the left side of trip point in N/2 terminal breaking point detection unit is describedSide;
4) if trip point on the right side of N/2 terminal breaking point detection unit, total by keyboard unit controlController unit is to controller transmit button closure and the ON-and OFF-command of N/2+1 terminal breaking point detection unit; WhenWhen 120V DC voltage is applied to the end of the first conductor and the second conductor, N/2+1 terminal breaking point detection listClosed first switch of controller control of unit, interval is controlled and is disconnected the first switch for 10 seconds; When 120V DC voltageWhile being applied to the end of the first conductor and the 3rd conductor, the controller control of N/2+1 terminal breaking point detection unitClosed second switch, interval is controlled and is disconnected second switch for 10 seconds; When 120V DC voltage is applied to the second conductorDuring with the end of the 3rd conductor, closed the 3rd switch of the controller control of N/2+1 terminal breaking point detection unit,Interval is controlled and is disconnected the 3rd switch for 10 seconds;
If trip point is in the left side of N/2 terminal breaking point detection unit, by keyboard unit control master controlDevice unit is to controller transmit button closure and the ON-and OFF-command of N/2-1 terminal breaking point detection unit; Work as 120VWhen DC voltage is applied to the end of the first conductor and the second conductor, the control of N/2-1 terminal breaking point detection unitClosed the first switch of device control processed, interval is controlled and is disconnected the first switch for 10 seconds; When 120V DC voltage is applied toWhen the end of the first conductor and the 3rd conductor, the controller control closure of N/2-1 terminal breaking point detection unitTwo switches, interval is controlled and is disconnected second switch for 10 seconds; When 120V DC voltage is applied to the second conductor and the 3rdWhen the end of conductor, closed the 3rd switch of the controller control of N/2-1 terminal breaking point detection unit, intervalWithin 10 seconds, control and disconnect the 3rd switch;
5) according to step 3) with step 4) method, until find the position of trip point;
6) if when the first switch and second switch are closed, DC ammeter does not all have reading, and trip point is describedAt the first conductor; If when the first switch and the 3rd switch are closed, DC ammeter does not all have reading, illustrate disconnectedWaypoint is at the second conductor; If when second switch and the 3rd switch are closed, DC ammeter does not all have reading, saysWhich root conductor is the waypoint of passing judgement, at the 3rd conductor, be positioned at thereby find out trip point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410546912.9A CN104299716B (en) | 2014-10-15 | 2014-10-15 | High voltage power transmission power cable |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410546912.9A Division CN104299716B (en) | 2014-10-15 | 2014-10-15 | High voltage power transmission power cable |
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| Publication Number | Publication Date |
|---|---|
| CN105609208A true CN105609208A (en) | 2016-05-25 |
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| CN201610203244.9A Pending CN105632639A (en) | 2014-10-15 | 2014-10-15 | High-voltage transmission power cable |
| CN201610201827.8A Pending CN105609208A (en) | 2014-10-15 | 2014-10-15 | High-voltage transmission power cable |
| CN201410546912.9A Active CN104299716B (en) | 2014-10-15 | 2014-10-15 | High voltage power transmission power cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103645495B (en) * | 2013-12-24 | 2016-04-06 | 山东大学 | The multicore distribution cable system of induced polarization method Geological Advanced Prediction |
| CN103743999B (en) * | 2013-12-30 | 2016-04-27 | 中航华东光电有限公司 | A kind of device and method searching electric wire breakpoint location |
| CN103886978B (en) * | 2014-02-25 | 2017-01-04 | 安徽怡和电缆有限公司 | A kind of insulation instrument signal cable |
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|---|---|---|---|---|
| CN2924549Y (en) * | 2006-06-15 | 2007-07-18 | 杭州瑞琦信息技术有限公司 | Lighting cable power-off stealing detection device |
| CN101418401A (en) * | 2008-12-05 | 2009-04-29 | 北京工业大学 | Al-Er alloy conductor material and preparation method thereof |
| CN201556432U (en) * | 2009-06-24 | 2010-08-18 | 沈群华 | Skeleton-type cable |
| CN201812025U (en) * | 2010-09-20 | 2011-04-27 | 中铁十二局集团有限公司 | Failure detection device for power transmission line |
| JP2012160358A (en) * | 2011-02-01 | 2012-08-23 | Furukawa Electric Co Ltd:The | Cable |
| CN203826115U (en) * | 2014-02-27 | 2014-09-10 | 安徽江淮电缆集团有限公司 | Improved computer cable |
Also Published As
| Publication number | Publication date |
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| CN104299716A (en) | 2015-01-21 |
| CN105632639A (en) | 2016-06-01 |
| CN104299716B (en) | 2016-08-24 |
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