CN105609207A - High voltage transmission power cable system - Google Patents
High voltage transmission power cable system Download PDFInfo
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- CN105609207A CN105609207A CN201610194303.0A CN201610194303A CN105609207A CN 105609207 A CN105609207 A CN 105609207A CN 201610194303 A CN201610194303 A CN 201610194303A CN 105609207 A CN105609207 A CN 105609207A
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- conductor
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- unit
- breaking point
- point detection
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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
- 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
- H01B7/02—Disposition of insulation
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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
Abstract
The invention discloses a high voltage transmission power cable system. The high voltage transmission power cable system comprises three conductors, a conductor shielding layer, an insulating layer and a protection layer, wherein the conductor shielding layer is arranged outside the conductors, the insulating layer is arranged outside the conductor shielding layer, and the conductors, the conductor shielding layer and the insulating layer are arranged in the protection layer. The high voltage transmission power cable system also comprises a cylindrical fixing device, wherein three arc grooves are formed in the side surface of the cylindrical fixing device in an equally spaced manner; one conductor is arranged in each arc groove; and cavities formed among the conductors, the cylindrical fixing device and the protection layer are respectively filled with insulating fillers. The high voltage transmission power cable system also comprises a remote-end breakpoint detection unit and N terminal breakpoint detection units, wherein the N terminal breakpoint detection units are arranged on a circuit of a high voltage transmission power cable in an equally spaced manner; and N is greater than or equal to 2. By adopting the high voltage transmission power cable system, the short-circuit problem of the power cable caused by the friction can be avoided; and once the power cable has the open-circuit problem, an open-circuit problem can be rapidly determined.
Description
The application is to be on November 03rd, 2014 applying date, and application number is 201410610596.7, inventionName is called the divisional application of the patent application of " a kind of high voltage power transmission power cable system ".
Technical field
The present invention relates to high voltage power transmission technical field, be specifically related to a kind of high voltage power transmission power cable system.
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; TheTwo, once the problem that opens circuit appears in power cable, be very difficult to search trip point, thereby can cause long-time large faceLong-pending power failure 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:
A kind of high voltage power transmission power cable system, comprises 3 conductors, conductor shield, insulating barrier, protective layer;Conductor shield is arranged on the outside of conductor, and insulating barrier is arranged on the outside of conductor shield, conductor, conductor screenCover layer, insulating barrier is arranged in protective layer; It is characterized in that, also comprise cylindrical fixture; Described circleThe side spaced set of cylindricality fixture has 3 circular grooves; In each circular groove, be provided with 1Root conductor; 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 and N are even number;
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; Erbium: 7-10 part; Titanium: 3-6 part;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 800 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 30mm 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 erbium titanium 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 structural representation 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 switch sections of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: a kind of high voltage power transmission power cable system, comprises 3 conductors, conductor shield, insulationLayer, protective layer; Conductor shield is arranged on the outside of conductor, and insulating barrier is arranged on the outside of conductor shield,Conductor, conductor shield, insulating barrier are arranged in protective layer; Also comprise cylindrical fixture; Described circleThe side spaced set of cylindricality fixture has 3 circular grooves; In each circular groove, be provided with 1Root conductor; The cavity forming between described conductor, cylindrical fixture, protective layer is filled insulation filler;Also comprise far-end breaking point detection unit, 4 terminal breaking point detection unit; 4 described terminal breaking point detection listsUnit's spaced set is on high voltage power transmission power cable line;
Wherein, 4 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;
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; Erbium: 7 parts; Titanium: 3 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 800 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 30mm 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 erbium titanium 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; Erbium: 8 parts; Titanium: 4 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 800 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 30mm 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 erbium titanium 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; Erbium: 9 parts; Titanium: 5 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 800 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 30mm 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 erbium titanium 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; Erbium: 10 parts; Titanium: 6 parts;
After above-mentioned weight proportion preparation aluminium alloy stock, first, smelting temperature is 800 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 30mm 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 erbium titanium 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 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;
If 4 trip points are 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;
If when 6 first switches and second switch are closed, DC ammeter does not all have reading, illustrate disconnectedWaypoint is at the first conductor; If when the first switch and the 3rd switch are closed, DC ammeter does not all have reading, saysThe waypoint of passing judgement is at the second conductor; If when second switch and the 3rd switch are closed, DC ammeter does not all have reading,Illustrate that trip point is at the 3rd conductor, be positioned at which root conductor thereby find out trip point.
Claims (2)
1. a high voltage power transmission power cable system, comprises 3 conductors, conductor shield, insulating barrier, guarantorSheath; Conductor shield is arranged on the outside of conductor, and insulating barrier is arranged on the outside of conductor shield, conductor,Conductor shield, insulating barrier are arranged in protective layer; It is characterized in that, also comprise cylindrical fixture; InstituteThe side spaced set of the cylindrical fixture of stating has 3 circular grooves; In each circular groove, establishBe equipped with 1 conductor; The cavity forming between described conductor, cylindrical fixture, protective layer is filled insulationFiller;
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 and N are even number;
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; Erbium: 9 parts; Titanium: 5 parts; According to above-mentioned weight proportion preparation aluminium alloy stockAfter, first, smelting temperature is 800 DEG C, through stirring, hexachloro-benzene refinery by de-gassing, uses conticaster to water continuouslyCasting, direct casting becomes the aluminium alloy cast ingot of Φ 120mm;
Then, adopt extruder to make the aluminium alloy rod of Φ 30mm 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 erbium titanium 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. a kind of high voltage power transmission power cable system according to claim 1, is characterized in that electric powerThe method that cable system is searched 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 |
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| CN201410610596.7A CN104319003B (en) | 2014-11-03 | 2014-11-03 | A kind of high voltage power transmission power cable system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410610596.7A Division CN104319003B (en) | 2014-11-03 | 2014-11-03 | A kind of high voltage power transmission power cable system |
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| CN105609207A true CN105609207A (en) | 2016-05-25 |
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| CN201410610596.7A Expired - Fee Related CN104319003B (en) | 2014-11-03 | 2014-11-03 | A kind of high voltage power transmission power cable system |
| CN201610194303.0A Pending CN105609207A (en) | 2014-11-03 | 2014-11-03 | High voltage transmission power cable system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104319003B (en) | 2016-08-24 |
| CN104319003A (en) | 2015-01-28 |
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