CN108614196A - A kind of high-voltage cable that can detect electric discharge automatically - Google Patents
A kind of high-voltage cable that can detect electric discharge automatically Download PDFInfo
- Publication number
- CN108614196A CN108614196A CN201810269216.6A CN201810269216A CN108614196A CN 108614196 A CN108614196 A CN 108614196A CN 201810269216 A CN201810269216 A CN 201810269216A CN 108614196 A CN108614196 A CN 108614196A
- Authority
- CN
- China
- Prior art keywords
- current sensor
- cable
- electric discharge
- coiling
- voltage cable
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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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
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer sheath
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of high-voltage cables that can detect electric discharge automatically, including high-tension cable, terminal box and current sensor, the construction of cable is followed successively by conductor cable core from inside to outside, internal shield, insulating layer, external shielding layer and protective jacket, the terminal box is located at the joint of cable, the current sensor is mounted in terminal box and is bolted, the current sensor includes shielding case, cutting ferrule, fixing end, ferrite and coiling, coiling is uniformly wound on the ferrite, the current sensor connects oscillograph by conducting wire, and it accesses network and is convenient for remote real-time monitoring.The present invention sets current sensor in cable connector terminal box, by detecting the local discharge signal of ground wire come the automatic discharge scenario for detecting high-tension cable, be conducive to the remote real-time monitoring to discharge high-tension cable, once the information of cloth office point need to only be searched with accident by going wrong, it reduces high-tension cable accident and investigates range, be conducive to efficiently check and solve cable fault.
Description
Technical field
The present invention relates to field of cables, especially a kind of high-voltage cable that can detect electric discharge automatically.
Background technology
Tie due to power cable and its attachment as power transmission plays indispensable angle in power industry
Color, with the acceleration of urbanization process, all trades and professions are also increasing year by year the demand of electricity consumption, the demand of cable and requirement
Standard is also continuously improved, and the erection total amount of high-tension cable even extra-high-tension cable is also being continuously increased.Due to cable aging or
Various problem that person occurs in preparation and installation process, the either destruction by external mechanical power or rodent
Bite, the attachmentes such as cable and its connector can be caused to generate partial discharge phenomenon, in cable termination junction, due in divesting
External shielding layer can cause internal field at shielded layer port to distort, and field strength is excessive, also easily causes partial discharge phenomenon, cable
Shelf depreciation will produce the signals such as electromagenetic wave radiation, optical signal, current impulse.With the generation of partial discharge phenomenon, cable is attached
The dielectric constant of part interior media can change, and the electrochemical corrosion of cable be caused, the problems such as cable breakdown is breaking, according to system
Meter, cable local discharge are one of the main reason for causing cable insulation to destroy.The detection of shelf depreciation at present is usually to investigate
Formula locally detects, and being possible in investigation can be by the interference of high radiation, strong noise etc., and often detection result is bad, also expends
A large amount of manpower, the investigation time is longer, and various inconvenient and economic losses are brought to the production and living of people.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of high-voltage cable that can detect electric discharge automatically.
The present invention is for technical scheme applied to solve the technical problem：A kind of high-tension cable that can detect electric discharge automatically
Line, including high-tension cable, terminal box and current sensor, the high-tension cable includes transmission of electricity part and grounded part, described defeated
The structure of electric part is followed successively by conductor cable core, internal shield, insulating layer, external shielding layer and protective jacket, the protection from inside to outside
Set outside sets one layer of anti-bite layer, and the grounded part passes through the center of current sensor, the terminal box to be located at transmission of electricity part
Joint, the current sensor are mounted in terminal box and are bolted, and the current sensor includes shielding case, card
Set, fixing end, ferrite and coiling, uniformly on the ferrite, the ferrite is located at shielding case to the coiling for winding
Interior, the cutting ferrule is sleeved at the center of shielding case, blocks ferrite and shielding case, and the fixing end is divided into the first fixing end and
Two fixing ends, the current sensor connect oscillograph by conducting wire, and access network and be convenient for remote real-time monitoring.
The above-mentioned high-voltage cable that can detect electric discharge automatically, it is 6 or 9 that the conductor cable core, which uses copper conductor, quantity,.
The above-mentioned high-voltage cable that can detect electric discharge automatically, the shielded layer are the shielded layer for being added to graphene, institute
It states anti-bite layer and uses Thermoplastic polyurethane elastomer material.
The above-mentioned high-voltage cable that can detect electric discharge automatically, the current sensor are broad-band sensor.
The cutting ferrule of the above-mentioned high-voltage cable that can detect electric discharge automatically, the current sensor selects nylon material.
The above-mentioned high-voltage cable that can detect electric discharge automatically, the ferrite are nickel-zinc ferrite, magnetic conductivity 200.
The above-mentioned high-voltage cable that can detect electric discharge automatically, the coiling are even number coiling, winding turns 10-
20 enclose, and the enameled wire thickness outside coiling is 1mm.
Compared to the prior art, the beneficial effects of the invention are as follows：
The present invention can detect high-voltage cable the connecing by the i.e. cable connector of key point in erecting cable of electric discharge automatically
Current sensor is set in wire box, the ground wire of high-tension cable is across current sensor, and current sensor is by detecting high-tension cable
The local discharge signal of ground wire carrys out the automatic discharge scenario for detecting high-tension cable, is conducive to the long-range reality discharged high-tension cable
When monitor, once the information of cloth office point need to only be searched with accident by going wrong, reduce high-tension cable accident investigate range, be conducive to
Efficient processing and solution cable fault, avoid the secondary injury come by high-tension cable discharge band, save man power and material；Cable
Shielded layer reduces the generation of electrion, rodent of setting up defences on the outside of high-tension cable using the shielded layer for adding graphene
Animal bites layer, keeps cable safer.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is the schematic cross-section of transmission of electricity part；
Fig. 3 is current sensor front view；
Fig. 4 is ferrite and coiling structural schematic diagram inside current sensor.
1. high-tension cable in figure, 2. terminal boxes, 3. current sensors, 11. transmission of electricity parts, 12. grounded parts, 111. conductors
Cable core, 112. internal shields, 113. insulating layers, 114. external shielding layers, 115. protective jackets, 116. anti-bite layers, 31. shielding cases, 32.
First fixing end, 33. cutting ferrules, 34. second fixing ends, 35. bolts, 36. ferrites, 37. coilings.
Specific implementation mode
The content of present invention is illustrated with reference to figure, but following embodiment is merely to illustrate the present invention, is not used to
It limits the scope of the invention.
The high-voltage cable of electric discharge, including high-tension cable 1, terminal box 2 and current sensor 3, the height can be detected automatically
Voltage cable 1 includes transmission of electricity part 11 and grounded part 12, and the structure of the transmission of electricity part 11 is followed successively by conductor cable core from inside to outside
111, internal shield 112, insulating layer 113, external shielding layer 114 and protective jacket 115, the outside of the protective jacket 115 set one layer it is anti-bite
Layer 116, the grounded part 12 pass through the center of current sensor 3, the terminal box 2 to be located at the joint of transmission of electricity part 11,
The current sensor 3 is mounted in terminal box 2 and is fixed by bolt 35, and the current sensor 3 includes shielding case 31, card
Set 33, fixing end, ferrite 36 and coiling 37, the coiling 37 are uniformly wrapped on ferrite 36, the ferrite
36 are located in shielding case 31, and the cutting ferrule 33 is sleeved at the center of shielding case 31, blocks ferrite 36 and shielding case 31, described solid
Fixed end is divided into the first fixing end 32 and the second fixing end 34, the current sensor 3 by conducting wire connect outside oscillograph, and
It accesses network and is convenient for remote real-time monitoring.
Further, it is 9 that the conductor cable core 111, which uses copper conductor, quantity,.
Further, the internal shield 112 and external shielding layer 114 use graphene shielded layer, the anti-bite layer 116 to adopt
Use Thermoplastic polyurethane elastomer material.
Further, the current sensor 3 is broad-band sensor.
Further, the cutting ferrule 33 of the current sensor 3 selects nylon material.
Further, the ferrite 36 is nickel-zinc ferrite, magnetic conductivity 200.
Further, the number of turns of 37 coiling of the coiling is 10 circles, and the enameled wire thickness outside coiling 37 is 1mm.
Above example is only exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (7)
1. a kind of high-voltage cable that can detect electric discharge automatically, which is characterized in that including high-tension cable (1), terminal box (2) and electricity
Flow sensor (3), the high-tension cable (1) include transmission of electricity partly (11) and grounded part (12), the transmission of electricity part (11)
Structure is followed successively by conductor cable core (111), internal shield (112), insulating layer (113), external shielding layer (114) and protection from inside to outside
It covers (115), one layer of anti-bite layer (116) is set outside the protective jacket (115), the grounded part (12) passes through current sensor
(3) center, the terminal box (2) are located at the joint of transmission of electricity part (11), and the current sensor (3) is mounted on terminal box
(2) on and fixed by bolt (35), the current sensor (3) includes shielding case (31), cutting ferrule (33), fixing end, iron oxygen
Body (36) and coiling (37), the coiling (37) are uniformly wrapped on ferrite (36), and the ferrite (36) is located at
In shielding case (31), the cutting ferrule (33) is sleeved at the center of shielding case (31), and the fixing end is divided into the first fixing end (32)
With the second fixing end (34), the first fixing end (32) and the second fixing end (34) are located at the both sides of shielding case (31), corresponding to set
It sets, the current sensor (3) accesses network and be convenient for remote real-time monitoring by the oscillograph outside conducting wire connection.
2. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the conductor cable core
(111) it is 6 or 9 to use copper conductor, quantity.
3. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the internal shield
(112) and external shielding layer (114) uses graphene shielded layer, the anti-bite layer (116) to use thermoplastic polyurethane elastomer material
Material.
4. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the current sensor
(3) it is broad-band sensor.
5. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the current sensor
(3) cutting ferrule (33) selects nylon material.
6. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the ferrite (36)
For nickel-zinc ferrite, magnetic conductivity 200.
7. the high-voltage cable according to claim 1 that electric discharge can be detected automatically, which is characterized in that the coiling (37)
The number of turns of coiling is even number, if 10-20 is enclosed, the external enameled wire thickness of coiling (37) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269216.6A CN108614196A (en) | 2018-03-29 | 2018-03-29 | A kind of high-voltage cable that can detect electric discharge automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810269216.6A CN108614196A (en) | 2018-03-29 | 2018-03-29 | A kind of high-voltage cable that can detect electric discharge automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108614196A true CN108614196A (en) | 2018-10-02 |
Family
ID=63659229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810269216.6A Pending CN108614196A (en) | 2018-03-29 | 2018-03-29 | A kind of high-voltage cable that can detect electric discharge automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108614196A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632468A (en) * | 2019-09-04 | 2019-12-31 | 国网辽宁省电力有限公司电力科学研究院 | Wireless cable partial discharge detection device, system and method based on high-frequency current sensor |
| CN114188081A (en) * | 2021-12-28 | 2022-03-15 | 江苏国宁电缆有限公司 | Smart cable with cable conductivity state fed back in real time |
| CN116804692A (en) * | 2023-08-24 | 2023-09-26 | 国网浙江省电力有限公司宁波供电公司 | Power cable aging state assessment method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558532A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Partial discharge on-line detection system of high-voltage crosslinked polyethylene power cable |
| CN104714155A (en) * | 2015-02-02 | 2015-06-17 | 西安交通大学 | Detection and evaluation device and method for partial discharge of direct current XLPE cables |
| CN106054034A (en) * | 2016-05-20 | 2016-10-26 | 国家电网公司 | Broadband scanning type cable partial discharge measurement device and detection method |
| CN106124950A (en) * | 2016-08-30 | 2016-11-16 | 合肥智博电气有限公司 | High voltage electric transmission cable on-line measuring device |
| CN206146997U (en) * | 2016-08-30 | 2017-05-03 | 浙江图维科技股份有限公司 | Integrated monitoring devices is put in cable electric current, conductor temperature , built -in office |
| CN206638705U (en) * | 2017-03-24 | 2017-11-14 | 珠海市脉迅科技有限公司 | A kind of high-frequency electrical pulses flow sensor of belt sensor joint protective structure |
| CN207123593U (en) * | 2017-09-20 | 2018-03-20 | 国网浙江省电力公司绍兴供电公司 | Power cable local discharge integrated detection device |
| CN207123591U (en) * | 2017-05-09 | 2018-03-20 | 杭州巨骐信息科技股份有限公司 | On-line monitoring system for high-tension cable partial discharge and fault location |
-
2018
- 2018-03-29 CN CN201810269216.6A patent/CN108614196A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558532A (en) * | 2013-11-20 | 2014-02-05 | 国家电网公司 | Partial discharge on-line detection system of high-voltage crosslinked polyethylene power cable |
| CN104714155A (en) * | 2015-02-02 | 2015-06-17 | 西安交通大学 | Detection and evaluation device and method for partial discharge of direct current XLPE cables |
| CN106054034A (en) * | 2016-05-20 | 2016-10-26 | 国家电网公司 | Broadband scanning type cable partial discharge measurement device and detection method |
| CN106124950A (en) * | 2016-08-30 | 2016-11-16 | 合肥智博电气有限公司 | High voltage electric transmission cable on-line measuring device |
| CN206146997U (en) * | 2016-08-30 | 2017-05-03 | 浙江图维科技股份有限公司 | Integrated monitoring devices is put in cable electric current, conductor temperature , built -in office |
| CN206638705U (en) * | 2017-03-24 | 2017-11-14 | 珠海市脉迅科技有限公司 | A kind of high-frequency electrical pulses flow sensor of belt sensor joint protective structure |
| CN207123591U (en) * | 2017-05-09 | 2018-03-20 | 杭州巨骐信息科技股份有限公司 | On-line monitoring system for high-tension cable partial discharge and fault location |
| CN207123593U (en) * | 2017-09-20 | 2018-03-20 | 国网浙江省电力公司绍兴供电公司 | Power cable local discharge integrated detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632468A (en) * | 2019-09-04 | 2019-12-31 | 国网辽宁省电力有限公司电力科学研究院 | Wireless cable partial discharge detection device, system and method based on high-frequency current sensor |
| CN114188081A (en) * | 2021-12-28 | 2022-03-15 | 江苏国宁电缆有限公司 | Smart cable with cable conductivity state fed back in real time |
| CN116804692A (en) * | 2023-08-24 | 2023-09-26 | 国网浙江省电力有限公司宁波供电公司 | Power cable aging state assessment method |
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| PB01 | Publication | ||
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Application publication date: 20181002 |