CN1564006A - Recognition method of power cable - Google Patents
Recognition method of power cable Download PDFInfo
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- CN1564006A CN1564006A CN 200410014533 CN200410014533A CN1564006A CN 1564006 A CN1564006 A CN 1564006A CN 200410014533 CN200410014533 CN 200410014533 CN 200410014533 A CN200410014533 A CN 200410014533A CN 1564006 A CN1564006 A CN 1564006A
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- cable
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- 238000000034 method Methods 0.000 title claims description 23
- 230000006698 induction Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
One end of cable to be identified is connected to an external AC power source in low voltage, switch and a current meter. The other end is connected to ground. An induction set of current detector is sheathed on or hugs the cable in working position. With switch being turned on then off, observing current detector to find out whether there is current signal, which is equal to current passing through the current meter at same time, passing through it determines whether the cable connected to the current meter is identical to the cable in working position. Features are: feasible, safety and high operability.
Description
Technical field
The present invention relates to a kind of recognition methods of cable, especially relate to a kind of recognition methods of power cable.
Background technology
Cable lay the restriction that can not need shaft tower, not be subjected to weather conditions, have to around environmental impact little, power supply is reliable, advantages such as security height are widely used in the distribution electric system.But influenced by the limited road surface resource in city, often on same paths, arrange many even tens power cables, and the form that cable adopts poling or raceway groove to lay usually, and the needs that raceway groove also usually beautifies because of municipal administration are made closed or semi-enclosed.In case the cable method of operation changes, as the reconfiguration of cable line open loop or cable etc., as do not have in time the label of the cable running mark in the sewer pipe is changed, brought very big hidden danger then for later construction.
Because electric substation or pole line terminal in the cable both sides, all hold correct label or sign on its cable, therefore the method for tional identification cable is exactly the end from electric substation or overhead transmission line, carry out Tracking Recognition along the way that cable detects by an unaided eye on the way,, path more when cable in the sewer pipe is long and when complicated again, just essential significant care, in case cable duct is closed or is semiclosed, can only locally open, the workmen just must creep in the cable duct from an end of opening, bend touching cable and move ahead, up to the place of need construction working.If the conduit line sealing is longer, the workmen is just very arduous, and its labour intensity is bigger, and might operating other cables of Long contact time.Therefore the method human factor of tional identification cable is too many, and carelessness is arranged slightly, will get wrong, and is not only time-consuming but also take a lot of work, inefficiency, and also the accuracy of identification is also lower, dangerous.
At the problems referred to above, some advanced methods that cable is discerned are also arranged, as CN1037715C disclosed " a kind of detection and method and apparatus of discerning cable of being used for ", it is ultralow frequency pulse producer by a special use, to armature of cable pulsed emission current signal, by being arranged on the special-purpose detector at cable place, working position, the exploration cable current pulse signal is discerned again.But the method for this kind identification needs to adopt the pulse producer of special use and the detector of special received pulse signal.The pulse producer of this kind identification cable rises to 350V by electric pressure converter with the DC voltage of 6V, and sends the high-tension current pulse signal by the closing relay control capacitor in the stage circuit to armature of cable.Special-purpose detector is then differentiated the high-tension current pulse signal that receives by amplifying circuit and special IC, therefore the recognition methods of this kind cable must be adopted special specialized equipment, require the operator must possess higher operative skill, define operator crowd.In addition, because equipment set comprises ultralow frequency pulse producer and pulse signal detector, its complex structure, equipment manufacturing cost is very expensive, and the reliability of work is low, and use and maintenance cost are high relatively.Moreover the identification of cable is normally carried out in electrical network different operating zone, and haulage equipment is inconvenience very, and in the process of transportation, also easily causes the damage of equipment, and can't carry out work on the spot, poor operability.
Summary of the invention
The present invention is directed to the problems referred to above, provide a kind of simple, security is good, and checkout equipment is easily got, and has the recognition methods of the power cable of stronger operability.
The present invention realizes by following technical proposal:
A kind of recognition methods of power cable, with the external low-voltage alternating current power supply of cable to be identified one end, switch and reometer, the other end ground connection of cable, with the induction installation suit of a current detecting instrument or be fitted on the cable of working position, by draw, splice grafting is at the switch of cable one end, observe whether to have with reometer on the current detecting instrument and flow through simultaneously and equal-sized current signal, judge with the cable of external impressed current be same cable whether with the cable of working position.
Wherein:
Described low-voltage alternating current power supply is the safe voltage of transformer output.
It equally is an end ground connection that the core of described cable or external protection have at least.
Described current detecting instrument is the pincerlike meter of bore greater than the outside diameter of cable, and the precision of pincerlike meter is 10mA, and its range is at 0.01A～10A.
The present invention adopts the advantage after the technique scheme to be:
1, method is simple, and security is good.The present invention applies a safe voltage at an end of cable, on the cable of working position, detect by the current measurement device successively, to reflecting certain bar cable of this electric current, when occurring simultaneously with the current signal that is connected cable one end reometer, just can think same cable, can apply the switch several of safe voltage by drawing, just can confirm errorless.So not only can guarantee construction safety, but also save a large amount of time that work efficiency improves tens of times than traditional recognition methods.The present invention has avoided operating personnel's other operation cables of possible Long contact time in cable duct owing to alleviated labor intensity of operating personnel greatly, only need use lower safe voltage because of applying trial voltage, has therefore guaranteed personal safety.
2, has stronger operability.Cable recognition methods of the present invention does not need the testing equipment of complex and expensive, only need a very common current detecting instrument, as the high-precision pincerlike meter of heavy caliber and a small-sized security transformer, as 220/36V transformer and reometer, checkout equipment is common, be easy to get, and equipment cost is not high, is easy to carry, working service is convenient, cost is low, can be widely used in the identification of cable.In addition, because the present invention only needs a common transformer, reometer with current detecting instrument, general operating personnel all can use, and the use crowd is wide.
3, detection method reliability height.The present invention is because the core or the electric current on the external protection that flow through cable are the amperage magnitudes, and interference current is generally milliampere level, both differ hundreds of to thousands of times, so interference current is the reading that can not influence current detecting instrument; And, because interference current is a randomness, can not all occur simultaneously with staff's drawing for several times switch, therefore avoided the influence of interference current, detection method is reliable.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is a schematic diagram of the present invention.
Embodiment
See shown in Figure 1; sign according to electric substation or overhead transmission line two ends; with the external low-voltage alternating current power supply 1 of cable to be identified 4 one ends; switch 3 and reometer 2; low-voltage alternating current power supply 1 ground connection; its low-voltage alternating current power supply 1 is 36V and following safe voltage; other end ground connection with cable 4 to be identified; the core ground connection of cable 4 to be identified; perhaps with the external protection ground connection of cable to be identified 4; the induction installation suit of current detecting instrument 5 or be fitted on the cable of working position; this current detecting instrument 5 can be the pincerlike meter of bore greater than the outer warp of cable; the precision of pincerlike meter is 10mA; its range is at 0.01A～10A; Closing Switch 3; low-voltage AC applies electric current to cable 4; then current detecting instrument 5 is measured the current value that flows through cable 4; switching manipulation person notifies the personnel at place, working position in Closing Switch; the drawing switch for several times; observe on the current detecting instrument 5 whether the current signal that flows through simultaneously with reometer 2 is arranged; as being current signal and the equal and opposite in direction that flows through simultaneously on current detecting instrument 5 and the reometer 2; can be judged as same cable; and for all can not surveying electric current on the cable of other normal operation or the cable current detector 5 that stops using as a servant, so this method can judge easily whether the cable that is connected with external impressed current and the cable of working position are same cables.
Claims (4)
1, a kind of recognition methods of power cable, it is characterized in that: with the external low-voltage alternating current power supply of cable to be identified one end, switch and reometer, the other end ground connection of cable, with the induction installation suit of a current detecting instrument or be fitted on the cable of working position, by draw, splice grafting is at the switch of cable one end, observe whether to have with reometer on the current detecting instrument and flow through simultaneously and equal-sized current signal, judge with the cable of external impressed current be same cable whether with the cable of working position.
2, the recognition methods of power cable according to claim 1 is characterized in that: described low-voltage alternating current power supply is the safe voltage of transformer output.
3, the recognition methods of power cable according to claim 1 is characterized in that: it equally is an end ground connection that the core of described cable or external protection have at least.
4, the recognition methods of power cable according to claim 1 is characterized in that: described current detecting instrument is the pincerlike meter of bore greater than the outside diameter of cable, and the precision of pincerlike meter is 10mA, and its range is at 0.01A～10A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100145331A CN1329739C (en) | 2004-04-02 | 2004-04-02 | Recognition method of power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100145331A CN1329739C (en) | 2004-04-02 | 2004-04-02 | Recognition method of power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564006A true CN1564006A (en) | 2005-01-12 |
| CN1329739C CN1329739C (en) | 2007-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100145331A Expired - Fee Related CN1329739C (en) | 2004-04-02 | 2004-04-02 | Recognition method of power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1329739C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061413A1 (en) * | 2006-11-24 | 2008-05-29 | Huawei Technologies Co., Ltd. | A method, device and system for recognizing a cable type and a switching cable |
| CN102331545A (en) * | 2011-08-30 | 2012-01-25 | 湖州电力局 | Method for realizing online cable identification by injecting asymmetric square signal |
| CN102735994A (en) * | 2012-07-10 | 2012-10-17 | 浙江图维电力科技有限公司 | Method and device for inputting or detecting non-contact signals based on capacitor sensing |
| CN102998595A (en) * | 2012-12-14 | 2013-03-27 | 大连国通电气有限公司 | Cable uniform current detection device and method for achieving same |
| CN107290605A (en) * | 2016-12-17 | 2017-10-24 | 玉溪大红山矿业有限公司 | A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances |
| CN107907795A (en) * | 2017-12-12 | 2018-04-13 | 华润电力湖南有限公司 | A kind of method and system of cable maintenance |
| CN107907780A (en) * | 2017-11-22 | 2018-04-13 | 安徽马钢设备检修有限公司 | A kind of cable seeking discrimination method |
| CN109307817A (en) * | 2018-10-24 | 2019-02-05 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of cable electrification identifier and recognition methods |
| CN110161570A (en) * | 2019-06-11 | 2019-08-23 | 武汉三相电力科技有限公司 | Cable run path detection method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05288790A (en) * | 1992-04-13 | 1993-11-02 | Hitachi Cable Ltd | Overhead earth wire current sensor disconnection detector |
-
2004
- 2004-04-02 CN CNB2004100145331A patent/CN1329739C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061413A1 (en) * | 2006-11-24 | 2008-05-29 | Huawei Technologies Co., Ltd. | A method, device and system for recognizing a cable type and a switching cable |
| CN102331545A (en) * | 2011-08-30 | 2012-01-25 | 湖州电力局 | Method for realizing online cable identification by injecting asymmetric square signal |
| CN102735994A (en) * | 2012-07-10 | 2012-10-17 | 浙江图维电力科技有限公司 | Method and device for inputting or detecting non-contact signals based on capacitor sensing |
| CN102735994B (en) * | 2012-07-10 | 2016-05-25 | 浙江图维科技股份有限公司 | A kind of input based on capacitance sensing non-contact signal or the method and apparatus detecting |
| CN102998595A (en) * | 2012-12-14 | 2013-03-27 | 大连国通电气有限公司 | Cable uniform current detection device and method for achieving same |
| CN107290605A (en) * | 2016-12-17 | 2017-10-24 | 玉溪大红山矿业有限公司 | A kind of cable recognition methods being used in the embedded path of shielding high-tension cable over long distances |
| CN107907780A (en) * | 2017-11-22 | 2018-04-13 | 安徽马钢设备检修有限公司 | A kind of cable seeking discrimination method |
| CN107907795A (en) * | 2017-12-12 | 2018-04-13 | 华润电力湖南有限公司 | A kind of method and system of cable maintenance |
| CN109307817A (en) * | 2018-10-24 | 2019-02-05 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of cable electrification identifier and recognition methods |
| CN109307817B (en) * | 2018-10-24 | 2024-04-02 | 中国南方电网有限责任公司超高压输电公司柳州局 | Cable live identification instrument and identification method |
| CN110161570A (en) * | 2019-06-11 | 2019-08-23 | 武汉三相电力科技有限公司 | Cable run path detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1329739C (en) | 2007-08-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER CO. STATE ELECTRIC NET CROP Effective date: 20120918 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120918 Address after: 213003 No. 27, West Front Street, Changzhou, Jiangsu Patentee after: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. Patentee after: Jiangsu Electric Power Company Patentee after: State Grid Corporation of China Address before: 213003 No. 27, West Front Street, Changzhou, Jiangsu Patentee before: Changzhou Power Supply Co, Jiangsu Provincial Power Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070801 Termination date: 20170402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |