CN104637624A - 35KV high-voltage transmission power cable - Google Patents
35KV high-voltage transmission power cable Download PDFInfo
- Publication number
- CN104637624A CN104637624A CN201510102410.1A CN201510102410A CN104637624A CN 104637624 A CN104637624 A CN 104637624A CN 201510102410 A CN201510102410 A CN 201510102410A CN 104637624 A CN104637624 A CN 104637624A
- Authority
- CN
- China
- Prior art keywords
- wire
- power cable
- resistance
- core
- unit
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G2200/00—Indexing scheme relating to installation of electric cables or lines covered by H02G
- H02G2200/10—Prevention of theft of valuable metals
Abstract
The invention discloses a 35KV high-voltage transmission power cable, which comprises three wire cores, insulating layers, a shielding layer and a protecting layer, wherein the three wire cores are pairwise tangent; the insulating layers are respectively arranged on the outer parts of the wire cores; the insulating layers, the shielding layer and the protecting layer are sequentially arranged on the outer parts of the three wire cores; the outer parts of the three wire cores are fixed together through a fixed rope; a certain distance is kept between each insulating layer and each wire core; a support frame is fixed between each wire core and each insulating layer, so that each wire core cannot be slidden. The 35KV high-voltage transmission power cable also comprises a first wire, a second wire, a direct-current power supply, a current detection unit, a controller unit, a display unit, an alarm unit, a wireless communication unit and a smart phone. According to the 35KV high-voltage transmission power cable provided by the invention, the theft location can be immediately known when a thief is stealing the protecting layer of the power cable, so that the safety of a transmission line is effectively protected, and the cooling problem is effectively solved, and the service life of the power cable is greatly prolonged.
Description
Technical field
The present invention relates to a kind of 35kV high voltage power transmission power cable, belong to high voltage power transmission technical field.
Background technology
Wires and cables industry is the second largest industry that China is only second to automobile industry, and product variety Service Efficiency and domestic market occupation rate are all more than 90%.Worldwide, the Chinese electric wire gross output value exceedes the U.S., becomes first electric wire producing country in the world.Along with Chinese wires and cables industry high speed development, creation of new enterprise quantity constantly rises, and industry overall technology level is largely increased.Along with the fast development of national economy, as the consumption of the aortal power cable of national economy and the scope of application increasing.Power cable is the cable for transmitting and distribute electric energy.Be usually used in Urban Underground electrical network, the lead line in power station, the in-line power of industrial and mining enterprises and cross river, excessively extra large submarine transmission line.In power circuit, the proportion shared by power cable increases just gradually.Power cable is in order to transmission with distribute the cable product of high-power power in the basic routing line of electric power system, comprising the power cable of 1-500kV and the various insulation of above various electric pressure.The basic structure of power cable is made up of core (conductor), insulating barrier, screen and protective layer four part.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 is isolated from each other between core and the earth and out of phase core on electrically, and ensureing power delivery, is indispensable part in power cable structure.Screen, because the current ratio that electric power cable passes through is comparatively large, can produce magnetic field around electric current, in order to not affect other element, and can this electromagnetic-field-shielded in cable so add screen.The effect of protective layer is protection power cable from the intrusion of introduced contaminants and moisture, and prevents external force from directly damaging power cable.
Power cable can be divided into core and overcoat (overcoat refers to insulating barrier, screen and protective layer) two large divisions structure; be positioned at the core of innermost layer for electric energy transmitting; the overcoat be rolled in outside core has sandwich construction, realizes the functions such as shielding, insulation, anti-outside destroy respectively.At high pressure and above defeated, power distribution network; because voltage is higher, theft live electric cable often can cause thief's injures and deaths, therefore; it is not the copper material aiming at wire that present robber steals power circuit, has occurred the stolen event of a lot of 10kV power cable overcoat in this year.Because cable laying is hidden, and the anti-system of prison is not set, therefore cable shield is stolen does not cause power failure and being not easily found of short circuit accident, but leaves very large potential safety hazard.After some cable shield are stolen, although temporarily do not occur to have a power failure or personnel casualty accidents, but cable insulation degree of protection declines to a great extent, switching overvoltage, lightning overvoltage, harmonic wave overvoltage, personnel trample, damaged by rats all will trigger short circuit, a certain phase short circuit blast often causes many feeder lines short circuit simultaneously of laying in one ditch, cause large-area power-cuts, as can be seen here, robber has buried the serious potential safety hazard in many places to electric power system.Due to many overcoats stolen after cable be imbedded in underground, power department does not have the security situation of special monitoring of equipment cable so far, cannot learn that the overcoat of power cable is destroyed, thus can not adopt remedial measures in time, make the safety of electric power system and periphery personnel and environment be subject to serious threat.
The excessive heat radiation of existing high-power electric cable current is a urgent problem always, existing 35kV power cable usually occurs that screen and insulating barrier damage phenomenon, many times not damage but core electric current is excessive, internal temperature is too high, insulating barrier and screen Long contact time high temperature with core close contact, cause greatly reduce useful life.
By above description, can find just can find at once when theft power cable overcoat for robber and the place navigating to theft is the problem highly studied; How well to solve high-voltage power electric power heat dissipation problem also very directly to study.
Summary of the invention
The technical problem to be solved in the present invention is: be difficult to be found when stealing the overcoat of 35KkV high voltage power transmission power cable for current robber, leave very large potential safety hazard to transmission line, just can't find theft place at once when robber steals 35kV high voltage power transmission power cable overcoat at present.Also have that the core temperature of power cable is too high to be not easy heat radiation power cable service life is reduced greatly.
In order to realize solving above technical problem, the technical solution adopted in the present invention is: 35kV high voltage power transmission power cable, comprises three cores, insulating barrier, screen, protective layers; Three cores are tangent between two, and every root core outside all arranges insulating barrier; The outside of three cores sets gradually insulating barrier, screen, protective layer; Three core outsides are fixed together by static line; Maintain a certain distance between insulating barrier and core, between core and insulating barrier, fixedly make core to slide by bracing frame;
Also comprise the first wire, the second wire, DC power supply, current detecting unit, controller unit, display unit, alarm unit, wireless communication unit, smart mobile phone;
The first described wire and the second wire are arranged at protective layer inside; First wire, the second wire are identical with the length of core;
One end of one end electrical connection current detecting unit of the first wire, one end of the other end electrical connection DC power supply of current detecting unit, the other end of DC power supply is electrically connected one end of the second wire;
The current signal of current detecting unit is input to controller unit, and controller unit is electrically connected with display unit, alarm unit;
Controller unit is communicated with smart mobile phone by wireless communication unit;
The resistance of equidistant N number of similar resistance in parallel between first wire with the second wire;
Wherein, N number of resistance called after the 1st resistance successively from left to right, the 2nd resistance, the i-th resistance, N resistance; 1≤i≤N;
1st resistance and N resistance lay respectively at the both ends of core; Distance between adjacent resistor is equal.
Further, the voltage of described DC power supply is 25V.
Further, described controller unit adopts AT89S52 single-chip microcomputer.
Further, the distance between adjacent resistor is less than 200 meters.
Further, described current detecting unit is the DC ammeter with current signal output end mouth.
Further, described alarm unit adopts sound and light alarm.
Further, described wireless communication unit adopts GPRS module.
Compared with prior art, the invention has the advantages that: 35kV high voltage power transmission power cable provided by the invention, when the place just immediately can knowing theft that time that robber steals power cable overcoat, effectively protect the safety of transmission line; Meanwhile, because robber wants to steal core, first protective layer must be destroyed, so power cable of the present invention also effectively prevent robber steal power cable core.The insulating barrier of 35kV power cable of the present invention does not directly contact with core with screen, and leave certain gap between them, such core can better dispel the heat, and substantially prolongs the useful life of power cable.
Accompanying drawing explanation
Fig. 1 is the structural representation of 35kV high voltage power transmission power cable of the present invention.
Fig. 2 is the schematic diagram of the protective layer part of power cable of the present invention.
Fig. 3 is that the present invention steals an observation circuit principle schematic.
Wherein, 1 is core, and 2 is static lines, and 3 is bracing frames, and 4 is insulating barriers, and 5 is screens, and 6 is protective layers, and 7 is wires.
Embodiment
Below in conjunction with accompanying drawing, invention is described in further detail.
With reference to Fig. 1,2,3,35kV high voltage power transmission power cables, comprise three cores, insulating barrier, screen, protective layers; Three cores are tangent between two, and every root core outside all arranges insulating barrier; The outside of three cores sets gradually insulating barrier, screen, protective layer; Three core outsides are fixed together by static line; Maintain a certain distance between insulating barrier and core, between core and insulating barrier, fixedly make core to slide by bracing frame; Also comprise the first wire, the second wire, DC power supply, current detecting unit, controller unit, display unit, alarm unit, wireless communication unit, smart mobile phone;
The first described wire and the second wire are arranged at protective layer inside; First wire, the second wire are identical with the length of core; One end of one end electrical connection current detecting unit of the first wire, one end of the other end electrical connection DC power supply of current detecting unit, the other end of DC power supply is electrically connected one end of the second wire; The current signal of current detecting unit is input to controller unit, and controller unit is electrically connected with display unit, alarm unit;
Suppose the total length 1900 meters of power cable, the resistance of equidistant 20 similar resistance in parallel between the first wire with the second wire;
Wherein, 20 resistance called after the 1st resistance successively from left to right, the 2nd resistance, the i-th resistance, the 20th resistance; 1≤i≤20;
1st resistance and the 20th resistance lay respectively at the both ends of core; Distance between adjacent resistor is equal is all 100 meters.The voltage of DC power supply is 25V, and resistance is 1000 ohm.Controller unit adopts AT89S52 single-chip microcomputer.Wherein, described current detecting unit is the DC ammeter with current signal output end mouth.
Wherein, alarm unit adopts sound and light alarm.Meanwhile, information theft is sent to smart mobile phone by GPRS module by controller unit.
The principle that the present invention can realize stealing some monitoring illustrates: no matter robber steals the core of power cable; or the overcoat (overcoat comprises insulating barrier, screen and protective layer) of theft power cable; so all need first to destroy protective layer, destruction first wire and the second wire once destruction protective layer is bound to.When the first wire and the second wire are not yet destroyed, the current value that current detecting unit detects should be: I=U/R=25V ÷ 50=0.5A (the resistor coupled in parallel resistance of 20 1000 ohm is 50 ohm).Suppose that the place that robber steals calculates the 950th meter from left end, 950 ÷ 100=9.5, namely between the 10th resistance and the 11st resistance, so now 10 resistance of only remaining parallel connection in circuit, the current value that now current detecting unit detects should be: I=U/R=25V ÷ 100=0.25A (the resistor coupled in parallel resistance of 10 1000 ohm is 100 ohm).Now, concrete current value and theft place corresponding to this current value can be inputed to display unit by controller, and display unit display theft place is between the 10th resistance and the 11st resistance.For the ease of understand be first suppose to be aware of concrete theft point herein, when not knowing theft point conversely, the resistance number be parallel in circuit can be calculated according to current value, owing to being all the equally spaced approximate location that can calculate theft point again according to resistance number between resistance, error is within 100 meters.
Claims (7)
1.35kV high voltage power transmission power cable, comprises three cores, insulating barrier, screen, protective layers; Three cores are tangent between two, and every root core outside all arranges insulating barrier; The outside of three cores sets gradually insulating barrier, screen, protective layer; It is characterized in that, three core outsides are fixed together by static line; Maintain a certain distance between insulating barrier and core, between core and insulating barrier, fixedly make core to slide by bracing frame;
Also comprise the first wire, the second wire, DC power supply, current detecting unit, controller unit, display unit, alarm unit, wireless communication unit, smart mobile phone;
The first described wire and the second wire are arranged at protective layer inside; First wire, the second wire are identical with the length of core;
One end of one end electrical connection current detecting unit of the first wire, one end of the other end electrical connection DC power supply of current detecting unit, the other end of DC power supply is electrically connected one end of the second wire;
The current signal of current detecting unit is input to controller unit, and controller unit is electrically connected with display unit, alarm unit;
Controller unit is communicated with smart mobile phone by wireless communication unit;
The resistance of equidistant N number of similar resistance in parallel between first wire with the second wire;
Wherein, N number of resistance called after the 1st resistance successively from left to right, the 2nd resistance, the i-th resistance, N resistance; 1≤i≤N;
1st resistance and N resistance lay respectively at the both ends of core; Distance between adjacent resistor is equal.
2. 35kV high voltage power transmission power cable according to claim 1, is characterized in that, the voltage of described DC power supply is 25V.
3. 35kV high voltage power transmission power cable according to claim 1, is characterized in that, described controller unit adopts AT89S52 single-chip microcomputer.
4. 35kV high voltage power transmission power cable according to claim 1, it is characterized in that, the distance between adjacent resistor is less than 200 meters.
5. 35kV high voltage power transmission power cable according to claim 1, is characterized in that, described current detecting unit is the DC ammeter with current signal output end mouth.
6. 35kV high voltage power transmission power cable according to claim 1, is characterized in that, described alarm unit adopts sound and light alarm.
7. 35kV high voltage power transmission power cable according to claim 1, is characterized in that, described wireless communication unit adopts GPRS module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510102410.1A CN104637624A (en) | 2015-03-09 | 2015-03-09 | 35KV high-voltage transmission power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510102410.1A CN104637624A (en) | 2015-03-09 | 2015-03-09 | 35KV high-voltage transmission power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104637624A true CN104637624A (en) | 2015-05-20 |
Family
ID=53216270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510102410.1A Pending CN104637624A (en) | 2015-03-09 | 2015-03-09 | 35KV high-voltage transmission power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104637624A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777342Y (en) * | 2005-01-20 | 2006-05-03 | 张立 | Real-time positioned monitoring device for anti theft of delivering pipeline |
| CN202373364U (en) * | 2011-11-14 | 2012-08-08 | 常州市亚达铜业有限公司 | Conducting wire scattered cable |
| US8860580B1 (en) * | 2011-04-27 | 2014-10-14 | Thomas K. Wong | System for protecting against theft of metal wire and other objects |
| CN104376913A (en) * | 2014-12-05 | 2015-02-25 | 国家电网公司 | High-voltage power cable |
-
2015
- 2015-03-09 CN CN201510102410.1A patent/CN104637624A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777342Y (en) * | 2005-01-20 | 2006-05-03 | 张立 | Real-time positioned monitoring device for anti theft of delivering pipeline |
| US8860580B1 (en) * | 2011-04-27 | 2014-10-14 | Thomas K. Wong | System for protecting against theft of metal wire and other objects |
| CN202373364U (en) * | 2011-11-14 | 2012-08-08 | 常州市亚达铜业有限公司 | Conducting wire scattered cable |
| CN104376913A (en) * | 2014-12-05 | 2015-02-25 | 国家电网公司 | High-voltage power cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104376913B (en) | High voltage power cable | |
| CN104464933A (en) | High-voltage transmission power cable | |
| CN104766662B (en) | Electric power system anti-theft high-voltage is transmitted electricity power cable | |
| CN204537746U (en) | Electric power system anti-theft high-voltage is transmitted electricity power cable | |
| CN204516451U (en) | High voltage power transmission power cable | |
| CN204423991U (en) | Anti-theft high-voltage transmission of electricity power cable | |
| CN105161204B (en) | Electric power system anti-theft high-voltage is transmitted electricity power cable | |
| CN104376914B (en) | High pressure transmission of electricity power cable | |
| CN104658683A (en) | Power cable for high voltage transmission | |
| CN204516460U (en) | Electric power system anti-theft high-voltage is transmitted electricity power cable | |
| CN104637624A (en) | 35KV high-voltage transmission power cable | |
| CN104392797A (en) | Power cable for high-voltage power transmission | |
| CN104392788A (en) | Power cable for high-voltage power transmission | |
| CN104464943B (en) | Anti-fracture high voltage power transmission power cable | |
| CN104851507B (en) | Electric power system 15kV anti-theft high-voltage transmission of electricity power cable | |
| CN104616821A (en) | Anti-theft high-voltage power transmission power cable | |
| CN104766671B (en) | Power system anti-theft high-voltage is transmitted electricity power cable | |
| CN105761831A (en) | 15KV anti-theft high voltage transmission power cable used for power supply system | |
| CN105761832A (en) | 15KV anti-theft high voltage transmission power cable used for power supply system | |
| CN110600185A (en) | Power cable anti-theft device | |
| CN110600186A (en) | High-voltage power cable anti-theft system | |
| CN110391046A (en) | A kind of anti-theft high-voltage transmission of electricity power cable | |
| CN104538108A (en) | High voltage transmission power cable | |
| CN104505166A (en) | High-voltage transmission power cable | |
| CN104464934A (en) | High voltage transmission power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |