CN102944816A - Mine cable line on-line fault diagnosis and positioning device - Google Patents
Mine cable line on-line fault diagnosis and positioning device Download PDFInfo
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- CN102944816A CN102944816A CN2012105223350A CN201210522335A CN102944816A CN 102944816 A CN102944816 A CN 102944816A CN 2012105223350 A CN2012105223350 A CN 2012105223350A CN 201210522335 A CN201210522335 A CN 201210522335A CN 102944816 A CN102944816 A CN 102944816A
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- 238000005516 engineering process Methods 0.000 abstract description 4
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Abstract
The invention discloses a mine cable line on-line fault diagnosis and positioning device, which comprises a power supply side and load side shift switch modules, a power supply side cable positioning module and power supply side and load side intelligent protection modules; the power supply side and load side shift switch modules are respectively connected with a power supply side cable and a load side cable; the power supply side and load side intelligent protection modules are respectively connected with the power supply side and load side shift switch modules; and the power supply side intelligent protection module communicates with the load side intelligent protection module. Mine cable line on-line fault diagnosis and positioning are realized by arranging the intelligent protection modules, a measurement and control system module and a cable fault positioning module on a power supply side and a load side; the fault phase, the magnitude of fault grounding resistance and the fault position of the cable are automatically determined by installing on-line fault positioning equipment at two ends of the cable in explosion-proof switches; and the diagnosis result is uploaded to a ground monitoring center by combining a network communication technology.
Description
Technical field
The present invention relates to a kind of cable fault diagnostic device, particularly a kind of cable fault diagnosis and locating device thereof that is applicable to use under the coal mine.
Background technology
Along with the high speed development of China's economic construction, cable is more and more extensive in the application of the departments such as industrial and mining enterprises, harbour, railway, airport, defence engineering and urban electricity supply.And cable to break down be inevitably, therefore diagnose and predict effectively, quickly and accurately power cable fault, be the assurance of guaranteeing the reliable and secure operation of cable system.
Cause the reason of power cable fault various, adopt the cable system power supply under the coal mine, because the particular surroundings under the coal mine, cable line is the highest electrical equipment of failure rate.The scientific worker has done a large amount of theory studies and practice trial both at home and abroad for a long time, has proposed many useful methods and technology, wherein generally uses in countries in the world so far owing to its plurality of advantages based on the time domain pulse method of transmission line theory.There is no at present the cable fault locator that is applicable under the coal mine, generally all adopt failure cable is dragged to ground tests, time-consuming, effort, the positioning cable fault is brought very large impact to colliery production fast.
Adopt the cable system power supply under the coal mine, because the particular surroundings under the coal mine, cable line is the highest electrical equipment of failure rate.There is no at present the cable fault locator that is applicable under the coal mine, generally all adopt failure cable is dragged to ground tests, time-consuming, effort, the positioning cable fault is brought very large impact to colliery production fast.
Therefore the device that needs a kind of energy fast detecting cable fault and positioning cable fault.
Summary of the invention
In view of this, technical matters to be solved by this invention provides the device of a kind of energy fast detecting cable fault and positioning cable fault.
The present invention is achieved through the following technical solutions:
Mine cable circuit on-line fault diagnosis provided by the invention and locating device comprise mains side module, load side module and host computer; Described mains side module comprises mains side change-over switch module, mains side cable locating module, mains side intelligent protection module; Described load side module comprises load side change-over switch module, load side intelligent protection module; Described mains side change-over switch module is connected with the mains side cable, and described load side change-over switch module is connected with the load side cable; Described mains side intelligent protection module is connected with mains side change-over switch module, and described load side intelligent protection module is connected with load side change-over switch module; Described mains side cable locating module is connected with the mains side intelligent protection module; Described mains side intelligent protection module is connected with the communication of load side intelligent protection module; described host computer is used for receiving mains side module and load side module detection streamer failure message; and form the cable fault position signalling according to the cable historical data by embedded expert system, show simultaneously the cable fault position signalling.
Further, also comprise mains side backup battery and load side backup battery; Described mains side backup battery is connected with mains side change-over switch module, mains side cable locating module, mains side intelligent protection module respectively; Described load side backup battery respectively with load side change-over switch module, load side intelligent protection module link.
Further, described mains side backup battery and load side backup battery are respectively the direct supply with the digital regulation resistance adjustable output voltage.
Further, described mains side intelligent protection module comprises the processor of embedded expert system, and described processor obtains the cable fault positional information, and by communication network all diagnostic messages is delivered to master system.
Beneficial effect of the present invention is: the present invention adopts and in mains side and load side intelligent protection module, TT﹠C system module and cable fault locating module to be set and to realize online fault detect and location on the mine cable circuit; be installed in the explosion-proof switch by the online FLU Fault Location Unit with the cable two ends; when cable breaks down; automatically determine that fault is separate, the size of fault ground resistance, determine the cable fault position; in conjunction with network communications technology, at last diagnostic result is uploaded to the ground monitoring center.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can be instructed from the practice of the present invention.Target of the present invention and other advantages can realize and obtain by following instructions and claims.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Mine cable circuit on-line fault diagnosis and locating device theory diagram that Fig. 1 provides for the embodiment of the invention.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
Mine cable circuit on-line fault diagnosis and locating device theory diagram that Fig. 1 provides for the embodiment of the invention, as shown in the figure: mine cable circuit on-line fault diagnosis provided by the invention and locating device comprise mains side module, load side module and host computer; Described mains side module comprises mains side change-over switch module, mains side cable locating module, mains side intelligent protection module and mains side backup battery; Described load side module comprises load side change-over switch module, load side intelligent protection module and load side backup battery;
Described mains side change-over switch module is connected with the mains side cable, and described load side change-over switch module is connected with the load side cable; Described mains side intelligent protection module is connected with mains side change-over switch module, and described load side intelligent protection module is connected with load side change-over switch module; Described mains side cable locating module is connected with the mains side intelligent protection module; Described mains side intelligent protection module is connected with the communication of load side intelligent protection module.
Described mains side cable locating module is used for confirming fault type and fault resstance size.
The nature of trouble diagnostic message that provides is provided described intelligent protection module.
Described intelligent protection module is used for providing GPF (General Protection False, observing and controlling function to circuit-line, and the communication contact of cable two ends smart machine.And according to the needs of cable fault location, give an order by intelligent protection module and to carry out corresponding relay switch operation.
Described cable fault locating module is used for after intelligent protection module excision fault, applies corresponding signal and signal intensity is adjusted by the cable fault locating module, unites definite abort situation by impulse method and bridge method.
Described mains side backup battery is connected with mains side change-over switch module, mains side cable locating module, mains side intelligent protection module respectively; Described load side backup battery respectively with load side change-over switch module, load side intelligent protection module link.
Described mains side backup battery and load side backup battery are respectively the direct supply with the digital regulation resistance adjustable output voltage.The maximum output voltage 300V of direct supply, electric current 10uA, digital regulation resistance adjustable output voltage.Adapt to the pull-up resistor scope very wide.
Described mains side intelligent protection module comprises the processor of embedded expert system, and described processor obtains the cable fault positional information, and by communication network all diagnostic messages is delivered to master system.Described host computer is used for receiving mains side module and load side module detection streamer failure message, and forms the cable fault position signalling according to the cable historical data by embedded expert system, shows simultaneously the cable fault position signalling.
Mine cable circuit on-line fault diagnosis and locating device that the present embodiment provides, the course of work is as follows:
After (short circuit, electric leakage) fault occured cable line, cable mains side intelligent protection device detected fault, and tripping cable mains side switch sends out even jumping order, the switch of tripping cable load side for simultaneously the intelligent protection device of cable load side switch.
The nature of trouble diagnostic message that the cable locating module provides according to protection module is switched by corresponding node, applies direct current signal, confirms fault type (short circuit, electric leakage, fault are separate) and fault (or ground connection) resistance sizes.
According to the approximate size (input parameter) of cable, select the pulse voltage that adapts with sound separate, measure the exact length of cable with impulse method.
According to the size of cable fault resistance, by the pulse output voltage that digital regulation resistance adjustment and fault resstance adapt, adopt the proportion of 200MHz, by sampled data is analyzed, get position of failure point.
Size and fault according to cable fault resistance are separate; regulator potentiometer changes the maximum output voltage of DC voltage module; high speed communication by protection module; corresponding fault loop line short-circuit operation is carried out in the control cables opposite end; by improved high accuracy number electric bridge, obtain the cable fault location parameter.
According to the size of the character of cable, contact resistance, historical data etc.; comprehensively provide the abort situation parameter by the embedded expert system of device; and by communication network with all diagnostic messages (nature of trouble, separate, stake resistance; the power parameter of impulse method and bridge method and diagnostic result, comprehensive diagnos result) deliver to master system; show at the man-machine interaction liquid crystal by intellective protector on the spot simultaneously, and can inquire about whole diagnostic messages on the spot.
By the people finder, obtain the physical fault position after, Upper system by communication or on the spot can be just actual abort situation parameter be input in the historical data base of positioning system.Historical information can be preserved 100 times whole localization of fault and Diagnostic parameters.Diagnostic procedure is as follows:
A, when this cable line fault, the switch at intellective protector action tripping cable two ends;
B, regulate the electric bridge direct supply, determine the probable ranges of cable fault character (short-circuit-type, ground connection separate etc.) and short circuit (or ground connection) resistance with electric bridge;
C, for the low-resistance fault, according to the length of cable and the general scope of stake resistance, the size of regulating impulse source DC voltage is found range with impulse method; For high resistive fault, when use and cable length information lack for the first time, by cable being perfected the length of determining cable with impulse method.
D, for high resistive fault, according to the fault resstance size of just not diagnosing, determine suitable bridge power supply voltage swing, electric bridge method is determined abort situation.
E, for reliably, need repeatedly test, result data is weighted as final diagnostic result.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (4)
1. mine cable circuit on-line fault diagnosis and locating device, it is characterized in that: comprise mains side module, load side module and host computer, described mains side module comprises mains side change-over switch module, mains side cable locating module and mains side intelligent protection module; Described load side module comprises load side change-over switch module and load side intelligent protection module; Described mains side change-over switch module is connected with the mains side cable, and described load side change-over switch module is connected with the load side cable; Described mains side intelligent protection module is connected with mains side change-over switch module, and described load side intelligent protection module is connected with load side change-over switch module; Described mains side cable locating module is connected with the mains side intelligent protection module; Described mains side intelligent protection module is connected with the communication of load side intelligent protection module; Described host computer is used for receiving mains side module and load side module detection streamer failure message, and forms the cable fault position signalling according to the cable historical data by embedded expert system, shows simultaneously the cable fault position signalling.
2. mine cable circuit on-line fault diagnosis according to claim 1 and locating device is characterized in that: also comprise mains side backup battery and load side backup battery; Described mains side backup battery is connected with mains side change-over switch module, mains side cable locating module, mains side intelligent protection module respectively; Described load side backup battery respectively with load side change-over switch module, load side intelligent protection module link.
3. mine cable circuit on-line fault diagnosis according to claim 1 and locating device, it is characterized in that: described mains side backup battery and load side backup battery are respectively the direct supply with the digital regulation resistance adjustable output voltage.
4. according to claim 1-3 each described mine cable circuit on-line fault diagnosis and locating device; it is characterized in that: described mains side intelligent protection module comprises the processor of embedded expert system; described processor obtains the cable fault positional information, and by communication network all diagnostic messages is delivered to master system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210522335.0A CN102944816B (en) | 2012-12-07 | 2012-12-07 | Mine cable line on-line fault diagnosis and positioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210522335.0A CN102944816B (en) | 2012-12-07 | 2012-12-07 | Mine cable line on-line fault diagnosis and positioner |
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| Publication Number | Publication Date |
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| CN102944816A true CN102944816A (en) | 2013-02-27 |
| CN102944816B CN102944816B (en) | 2016-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652153A (en) * | 2016-01-14 | 2016-06-08 | 桂林电子科技大学 | Underground fault explosion-proof switch positioning method |
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| CN2630859Y (en) * | 2002-11-30 | 2004-08-04 | 张跃武 | Cable measuring intelligent multi-terminal device |
| US6995551B1 (en) * | 2002-06-07 | 2006-02-07 | Marvell International Ltd. | Cable tester with insertion loss estimator |
| CN1827444A (en) * | 2006-03-29 | 2006-09-06 | 西南交通大学 | Positioning device for fault of railway automatic blocking and continuous transmission line |
| CN101232176A (en) * | 2008-01-09 | 2008-07-30 | 潍坊学院 | Non-effective earthing distribution system fault locating method based on neutral point of transient traveling wave |
| CN101452034A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司超高压输变电公司 | Portable intelligent DC earthing searching instrument |
| CN102520316A (en) * | 2011-12-15 | 2012-06-27 | 重庆鸽牌电线电缆有限公司 | Method for quickly and accurately positioning fault point of cable |
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2012
- 2012-12-07 CN CN201210522335.0A patent/CN102944816B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6995551B1 (en) * | 2002-06-07 | 2006-02-07 | Marvell International Ltd. | Cable tester with insertion loss estimator |
| US7002354B1 (en) * | 2002-06-07 | 2006-02-21 | Marvell International Ltd. | Cable tester |
| CN2630859Y (en) * | 2002-11-30 | 2004-08-04 | 张跃武 | Cable measuring intelligent multi-terminal device |
| CN1827444A (en) * | 2006-03-29 | 2006-09-06 | 西南交通大学 | Positioning device for fault of railway automatic blocking and continuous transmission line |
| CN101452034A (en) * | 2007-11-30 | 2009-06-10 | 上海市电力公司超高压输变电公司 | Portable intelligent DC earthing searching instrument |
| CN101232176A (en) * | 2008-01-09 | 2008-07-30 | 潍坊学院 | Non-effective earthing distribution system fault locating method based on neutral point of transient traveling wave |
| CN102520316A (en) * | 2011-12-15 | 2012-06-27 | 重庆鸽牌电线电缆有限公司 | Method for quickly and accurately positioning fault point of cable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652153A (en) * | 2016-01-14 | 2016-06-08 | 桂林电子科技大学 | Underground fault explosion-proof switch positioning method |
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| CN102944816B (en) | 2016-06-22 |
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Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant after: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Applicant after: SICHUAN CHUANMEI HUARONG ENERGY CO.,LTD. Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Applicant before: SICHUAN CHUANMEI HUARONG ENERGY CO.,LTD. |
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Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Applicant after: SICHUAN CHUANMEI HUARONG ENERGY CO.,LTD. Address before: 400039 Chongqing Jiulongpo Branch City Road No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Applicant before: SICHUAN CHUANMEI HUARONG ENERGY CO.,LTD. |
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