CN107290605A - A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances - Google Patents
A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances Download PDFInfo
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- CN107290605A CN107290605A CN201611172240.5A CN201611172240A CN107290605A CN 107290605 A CN107290605 A CN 107290605A CN 201611172240 A CN201611172240 A CN 201611172240A CN 107290605 A CN107290605 A CN 107290605A
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- cable
- resistance
- value
- recognition methods
- over long
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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
Abstract
The invention discloses a kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances.Easily complicated cable can be identified for the method for the present invention, less demanding to operating personnel, be particularly in the wild, the adverse circumstances such as underground, be especially adapted for use in emergency；The inventive method identification cable also has speed fast, advantage simple to operate.
Description
Technical field
The invention belongs to electric power overhaul technical field, and in particular to one kind is used for shielding high-tension cable over long distances and buries path
In cable recognition methods.
Background technology
Modernization bargh possesses substantial amounts of plant equipment, power equipment, whether in the intensive choosing of device height
In ore deposit factory building, or in the underworkings of narrow space distance, it is necessary to largely can meet production using power cable and set
Standby demand, is limited to space and cost, and substantial amounts of cable is laid using collection central bridge, and concentration cable ditch is laid, special underground
Tunnel high-tension cable is to concentrate to hang by wall, and earth's surface is embedded over long distances, and sign board, later stage are not hung by standard based on construction
Safeguard that the high-tension cable inside a variety of causes let us factory building such as imperfection is intricate, outside duration many high voltage power distribution rooms remote
Cable is without ID of trace route path, without model identification, the particularly high-tension cable of underground particular surroundings and earth's surface soil directly embedded height
Voltage cable, be when the needs that break down accurately find out target faults cable in a plurality of high-tension cable without mark without famous brand
The problem run into production.Conventional cable recognition methods is that, by lookups that manually track, but it is long to work as high-tension shielding cable
Apart from it is buried, by hundreds of meters of vertical shafts, can not the particular surroundings such as large-area power-cuts can not manually complete the lookup that tracks.
Therefore, research and development are a kind of can be easy to that operation, equipment be simple, cable recognition methods suitable for complex situations are to solve
The key of above mentioned problem.
The content of the invention
It is an object of the invention to provide a kind of cable identification side being used in the embedded path of shielding high-tension cable over long distances
Method.
The object of the present invention is achieved like this, including specifically includes following steps：
A, cable head ground wire resistance to earth value to be identified is measured with universal meter, resistance value is more than or equal to 4 Ω, and ground wire adds
Alternating voltage, or resistance value are less than 4 Ω, and ground wire installs resistance wire additional, and it is 1 ~ 4 Ω to make head end ground wire resistance to earth value；
B, selection power supply capacity and contact capacity are more than 30kvA switch as power input point, with wire by cable to be identified
Head end ground wire, resistance wire and power supply be sequentially connected in series, and resistance wire resistance R primary election value for measurement the specified electricity of ZCT
The 1/2 of flow valuve with the business of input voltage value；
C, the middle part that open type zero sequence current mutual inductor is stuck in cable to be identified, then on open type zero sequence current mutual inductor
Connect indicator type current meter；
D, the head end ground wire to cable to be identified switch on power beginning power transmission, if the ammeter pointer on zero sequence current mutual inductor
Swing, then the cable that zero sequence current mutual inductor is installed is the target cable to be recognized；If ammeter pointer is without swing, by zero
Sequence current transformer, ammeter are arranged on remaining cable to be detected, are detected by root, until ammeter pointer has swing
And find out target cable.
Beneficial effects of the present invention：The method of the present invention can quickly can be carried out by shirtsleeve operation to complicated cable
Identification, it is to avoid the problem of Traditional Man searches trouble, is particularly suitable for use in the adverse circumstances such as field, underground.
Brief description of the drawings
Fig. 1 is that cable of the present invention recognizes operating process schematic diagram；
Fig. 2 is cable head ground wire, resistance wire, power supply connection diagram.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but the present invention is not any limitation as in any way, based on this
Any conversion or replacement that invention training centre is made, belong to protection scope of the present invention.
The present invention as shown in accompanying drawing 1 ~ 2 includes specifically including following steps：
A, cable head ground wire resistance to earth value to be identified is measured with universal meter, resistance value is more than or equal to 4 Ω, and ground wire adds
Alternating voltage, or resistance value are less than 4 Ω, and ground wire installs resistance wire additional, and it is 1 ~ 4 Ω to make head end ground wire resistance to earth value；
B, selection power supply capacity and contact capacity are more than 30kvA switch as power input point, with wire by cable to be identified
Head end ground wire, resistance wire and power supply be sequentially connected in series, and resistance wire resistance R primary election value for measurement the specified electricity of ZCT
The 1/2 of flow valuve with the business of input voltage value；
C, the middle part that open type zero sequence current mutual inductor is stuck in cable to be identified, then on open type zero sequence current mutual inductor
Connect indicator type current meter；
D, the head end ground wire to cable to be identified switch on power beginning power transmission, if the ammeter pointer on zero sequence current mutual inductor
Swing, then the cable that zero sequence current mutual inductor is installed is the target cable to be recognized；If ammeter pointer is without swing, by zero
Sequence current transformer, ammeter are arranged on remaining cable to be detected, are detected by root, until ammeter pointer has swing
And find out target cable.
If the quantity of cable has a plurality of in described step C, first selection is entered with head end cable model, cable of the same size
Row detection.
When ammeter pointer has swing but swings unobvious in described D steps, reduce the resistance of head end resistance wire, or increase
Big input current, electric current increases by 10 ~ 20A every time.
Load current value, tested cable shield current-carrying of the current value of power transmission for ZCT in described D steps
Value, the median of tested cable insulation maximum temperature current limit three.
Described cable is fault-free cable.
With reference to embodiment 1, the invention will be further described.
Embodiment 1
A, cable head ground wire resistance to earth value to be identified is measured with universal meter, resistance value is more than or equal to 4 Ω, and ground wire adds
Alternating voltage, or resistance value are less than 4 Ω, and ground wire installs resistance wire additional, and it is 1 ~ 4 Ω to make head end ground wire resistance to earth value；
B, selection power supply capacity and contact capacity are more than 30kvA switch as power input point, with wire by cable to be identified
Head end ground wire, resistance wire and power supply be sequentially connected in series, and resistance wire resistance R primary election value for measurement the specified electricity of ZCT
The 1/2 of flow valuve with the business of input voltage value；
C, the middle part that open type zero sequence current mutual inductor is stuck in cable to be identified, then on open type zero sequence current mutual inductor
Connect indicator type current meter；
D, the head end ground wire to cable to be identified switch on power beginning power transmission, if the ammeter pointer on zero sequence current mutual inductor
Swing, then the cable that zero sequence current mutual inductor is installed is the target cable to be recognized；If ammeter pointer is without swing, by zero
Sequence current transformer, ammeter are arranged on remaining cable to be detected, are detected by root, until ammeter pointer has swing
And find out target cable.
Claims (6)
1. a kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances, it is characterized in that：Specifically include with
Lower step：
A, measurement cable head ground wire resistance to earth value to be identified, if resistance value is more than or equal to 4 Ω, ground wire adds alternating current
Pressure, if resistance value is less than 4 Ω, ground wire installs resistance wire additional, and it is 1 ~ 4 Ω to make head end ground wire resistance to earth value；
B, selection power supply capacity and contact capacity are more than 30kvA switch as power input point, with wire by cable to be identified
Head end ground wire, resistance wire and power supply be sequentially connected in series, and resistance wire resistance R primary election value for measurement the specified electricity of ZCT
The 1/2 of flow valuve with the business of input voltage value；
C, the middle part that open type zero sequence current mutual inductor is stuck in cable to be identified, then on open type zero sequence current mutual inductor
Connect indicator type current meter；
D, the head end ground wire to cable to be identified switch on power beginning power transmission, if the ammeter pointer on zero sequence current mutual inductor
Swing, then the cable that zero sequence current mutual inductor is installed is the target cable to be recognized；If ammeter pointer is without swing, by zero
Sequence current transformer, ammeter are arranged on remaining cable to be detected, are detected by root, until ammeter pointer has swing
And find out target cable.
2. the cable recognition methods according to claim 1 being used in the embedded path of shielding high-tension cable over long distances, it is special
Levying is：If the quantity of cable has a plurality of in described step C, first selection is carried out with head end cable model, cable of the same size
Detection, then other cables are detected.
3. the cable recognition methods according to claim 1 being used in the embedded path of shielding high-tension cable over long distances, it is special
Levying is：When ammeter pointer has swing but swings unobvious in described D steps, reduce the resistance of head end resistance wire, or increase
Input current, electric current increases by 10 ~ 20A every time.
4. the cable recognition methods according to claim 1 being used in the embedded path of shielding high-tension cable over long distances, it is special
Levying is：In described D steps the current value of power transmission be the load current value of ZCT, tested cable shield current-carrying value,
The median of tested cable insulation maximum temperature current limit three.
5. the cable recognition methods according to claim 1 being used in the embedded path of shielding high-tension cable over long distances, it is special
Levying is：Described cable is fault-free cable.
6. the cable recognition methods according to claim 1 being used in the embedded path of shielding high-tension cable over long distances, it is special
Levying is：Power supply is AC400V or AC220V in described step B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611172240.5A CN107290605A (en) | 2016-12-17 | 2016-12-17 | A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611172240.5A CN107290605A (en) | 2016-12-17 | 2016-12-17 | A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances |
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| Publication Number | Publication Date |
|---|---|
| CN107290605A true CN107290605A (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611172240.5A Pending CN107290605A (en) | 2016-12-17 | 2016-12-17 | A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098901A (en) * | 2020-08-12 | 2020-12-18 | 深圳供电局有限公司 | Cable identification method and device, computer equipment and readable storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564006A (en) * | 2004-04-02 | 2005-01-12 | 江苏省电力公司常州供电公司 | Recognition method of power cable |
| CN203941256U (en) * | 2014-07-16 | 2014-11-12 | 天津科技大学 | Novel cable identifier |
| CN204269755U (en) * | 2014-12-16 | 2015-04-15 | 国家电网公司 | A kind of cable identification device |
| CN204302421U (en) * | 2014-12-31 | 2015-04-29 | 武汉大学 | A kind of cable identifier |
| CN204613345U (en) * | 2014-12-16 | 2015-09-02 | 大唐太原第二热电厂 | A kind of recognition device of cable fault |
| CN204964653U (en) * | 2015-09-23 | 2016-01-13 | 北京埃德尔博珂工程技术有限公司 | Novel pipeline identification equipment's flexible signal reception device |
| CN105891641A (en) * | 2016-05-04 | 2016-08-24 | 国网上海市电力公司 | Cable recognition device and recognition method |
-
2016
- 2016-12-17 CN CN201611172240.5A patent/CN107290605A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1564006A (en) * | 2004-04-02 | 2005-01-12 | 江苏省电力公司常州供电公司 | Recognition method of power cable |
| CN203941256U (en) * | 2014-07-16 | 2014-11-12 | 天津科技大学 | Novel cable identifier |
| CN204269755U (en) * | 2014-12-16 | 2015-04-15 | 国家电网公司 | A kind of cable identification device |
| CN204613345U (en) * | 2014-12-16 | 2015-09-02 | 大唐太原第二热电厂 | A kind of recognition device of cable fault |
| CN204302421U (en) * | 2014-12-31 | 2015-04-29 | 武汉大学 | A kind of cable identifier |
| CN204964653U (en) * | 2015-09-23 | 2016-01-13 | 北京埃德尔博珂工程技术有限公司 | Novel pipeline identification equipment's flexible signal reception device |
| CN105891641A (en) * | 2016-05-04 | 2016-08-24 | 国网上海市电力公司 | Cable recognition device and recognition method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112098901A (en) * | 2020-08-12 | 2020-12-18 | 深圳供电局有限公司 | Cable identification method and device, computer equipment and readable storage medium |
| CN112098901B (en) * | 2020-08-12 | 2022-10-28 | 深圳供电局有限公司 | Cable identification method and device, computer equipment and readable storage medium |
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Application publication date: 20171024 |