CN202093127U - Device for detecting failure points and path orientation of cables by principle of impact oscillation waves - Google Patents
Device for detecting failure points and path orientation of cables by principle of impact oscillation waves Download PDFInfo
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- CN202093127U CN202093127U CN201120186397XU CN201120186397U CN202093127U CN 202093127 U CN202093127 U CN 202093127U CN 201120186397X U CN201120186397X U CN 201120186397XU CN 201120186397 U CN201120186397 U CN 201120186397U CN 202093127 U CN202093127 U CN 202093127U
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Abstract
The utility model discloses a device for detecting failure points and path orientation of cables by the principle of impact oscillation waves. The device is characterized in that a grounding output end of a high-voltage impact pulse signal source is connected with a grounding wire of a starting end of a failure cable, a high-voltage output end of the pulse signal source is connected with one end of a resonance reactor, the other end of the resonance reactor is connected with a failure phase of the failure cable, a grounding wire of a terminal of the failure cable is cut off with the ground, damping oscillation waves generated on the failure cable are transmitted along the failure cable which radiates electromagnetic field signals outwards, magnetic field signals in the electromagnetic field signals can be detected by the magnetic field signal detecting device, damping oscillation waveforms on the left side in the front and the right side at the back of the failure points of the cable can be displayed on a display unit of the device, and the positions of the cable where the magnetic field signals are generated and disappear are the failure points of the cable. A maximum damping oscillation wave form is displayed during detecting of path orientation of the cables. The device for detecting the failure points and the path orientation of the cables is suitable for failure positioning of the cables in various arrangements, simple in structure, convenient in use and can be widely used for electric systems, enterprises and public institutions.
Description
Technical field
The utility model relates to a kind of cable fault point location and searches the device of cable trace trend, and being specifically related to is a kind of device with shock oscillation ripple principle detection streamer trouble spot and cable trace trend.
Background technology
The urbanization fast development, in order to beautify the environment and the needs of national defence, change built on stilts in a large number power circuit into buried cable, the use amount of cable is increased sharply, and take place owing to frequent reasons such as municipal construction have caused a large amount of cable faults, in order to find the underground cable trouble spot rapidly and accurately, become the difficult problem that the cable repairing recovers to send electricity.Especially in the face of increasing branch cable, poling cable, how many traditional detection cable fault point methods exists certain defective, and main method has at present:
1, traditional sound detection, and follow-up improved sound, magnetic-synchro sound detection, sound, magnetic time difference method, sound, magnetic wave shape time difference method all are difficult to effective operate as normal owing to being subject to locate the live audio noise.
2, step voltage method is used the fault that only can adapt to small part at the scene owing to can only be used for the location of direct-buried cable earth fault, is mainly used in the location of direct-burried extra-high-tension cable metallic jacket earth fault at present.
3, frequency induction method can only be used for special metallic short circuit and open fault location, and this fault only belongs to special case in a large amount of cable faults that take place.
4, steel armour current field probe method has disclosed patent, but only theoretical feasible, is subjected to the cable scene to lay the restriction of situation and impracticable, and its applying unit will remove from the propaganda webpage of company by the product of its principle development.
5, Low Voltage Impulse Method, high voltage pulse method (flashover method), second pulse method, multiple pulses method, they all only can be used for the pre-determined bit of cable fault, but not accurately locate.
Summary of the invention
The purpose of this utility model provides the device with shock oscillation ripple principle detection streamer trouble spot and cable trace trend that the insulation fault of a kind of main push-towing rope of the cable that can lay poling, direct-burried, raceway groove, tunnel and branch cable carries out localization of fault.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: the device with shock oscillation ripple principle detection streamer trouble spot and cable trace trend comprises that the ground connection output terminal of common impacting with high pressure pulse signal source is connected on the top ground wire of failure cable to be measured; The high-voltage output end of described common impacting with high pressure pulse signal source connects an end of high pressure resonance reactor; The fault that the other end of described high pressure resonance reactor is connected to failure cable to be measured goes up mutually; The terminal ground wire of described failure cable to be measured disconnects with ground; The described damp oscillatory wave that produces on failure cable is along failure cable transmission and outside radiation field signal; Described field signal pick-up unit is connected with field signal induction receiving coil, and described left side damped oscillation waveform before Method of Cable Trouble Point is presented on the display unit of field signal pick-up unit; Right side after the described Method of Cable Trouble Point sharply damped oscillation waveform of decay is presented on the display unit of field signal pick-up unit.
The utility model compared with prior art, advantage of the present invention is:
1, shock oscillation ripple cable fault localization method can differentiate rapidly that the trouble spot occurs in that branch in the multi-way cable;
2, the cable fault that adapts under poling, direct-burried, raceway groove, the various cable laying situations in tunnel is located;
3, thoroughly be not subjected to the influence of localization of fault live audio noise during localization of fault, judge directly perceived simple;
4, can look into the cable trace trend by the limit gulde edge, this device is dual-use.
Simple in structure, easy to use, be widely used in electric system, each enterprises and institutions.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model;
Fig. 2 is field signal induction receiving coil and the failure cable synoptic diagram of Fig. 1;
Fig. 3 is detection damped oscillation squiggle figure before the trouble spot that shows of the field signal pick-up unit of Fig. 1;
Fig. 4 detects the sharply damped oscillation squiggle figure of decay behind the trouble spot that shows of the field signal pick-up unit of Fig. 1.
Among the figure, 1 is common impacting with high pressure pulse signal source, and 1a is its high-voltage output end, and 1b is its ground connection output terminal; The 2nd, the high pressure resonance reactor, 2 and 1 has formed impacting with high pressure pulse signal source of the present invention jointly; The 3rd, failure cable to be measured; The 4th, failure cable to be measured top ground wire; The 5th, the trouble spot; The 6th, failure cable terminal ground wire to be measured; The 7th, failure cable fault phase to be measured; The 8th, the field signal pick-up unit; The 9th, the waveform display unit of field signal pick-up unit 8; The 10th, the field signal induction receiving coil of field signal pick-up unit 8; The 11st, the detection waveform of field signal pick-up unit 8 before the trouble spot; The 12nd, the detection waveform of field signal pick-up unit 8 behind the trouble spot; The 13rd, the field signal exemplary waveforms before the trouble spot 5.
Embodiment
Be described further below in conjunction with the content of accompanying drawing invention.
With reference to shown in Figure 1, a kind of device with shock oscillation ripple detection streamer trouble spot and cable trace trend comprises that the ground connection output terminal 1b of common impacting with high pressure pulse signal source 1 is connected on the top ground wire 4 of failure cable 3 to be measured; The high-voltage output end 1a of described common impacting with high pressure pulse signal source 1 connects an end of high pressure resonance reactor 2; The other end of described high pressure resonance reactor 2 is connected on the fault phase 7 of failure cable to be measured; The terminal ground wire 6 of described failure cable to be measured 3 disconnects with ground; The described damp oscillatory wave that produces on failure cable 3 is along failure cable 3 transmission and outside radiation field signal 13; Described field signal pick-up unit 8 is connected with field signal induction receiving coil 10, and described left side damped oscillation waveform 11 before Method of Cable Trouble Point 5 is presented on the display unit 9 of field signal pick-up unit 8; Right side after the described Method of Cable Trouble Point 5 sharply damped oscillation waveform 12 of decay is presented on the display unit 9 of field signal pick-up unit 8.
Field signal pick-up unit 8 among Fig. 1 comprises display unit 9, induction receiving coil 10 is field signal pick-up units that move along cable 3 paths trend, when if this device is used for the detection streamer abort situation, what its display unit 9 began to show is the damped oscillation waveform 11 that trouble spot 5 is detected field signal 13 before, after pick-up unit moves towards to move arrival trouble spot 5 along cable 3 paths, what display unit 9 showed at this moment is the damped oscillation waveform 12 of rapid attenuating mutation, for the clear damped oscillation waveform 11 that shows two variations, 12, two electromagnetic field signal pick-up units 8 and display unit 9 have been drawn among Fig. 1, have only an electromagnetic field signal pick-up unit 8 and display unit 9 on the actual device, display unit 9 in the trouble spot 5 as showing two kinds of different damped oscillation waveforms 11 before and after the separation, 12.When the cable trace before device is used for detection failure point moved towards, 9 of display units showed damped oscillation waveform 11.
Fig. 2, when having provided field signal induction receiving coil 10 and having detected field signals 13 and the relative position of failure cable to be measured 3.
Fig. 3, provided field signal pick-up unit 8 and before the trouble spot 5 of cable 3, detected the waveform 11 that field signal 13 shows, this waveform is a damped oscillation waveform, when field signal pick-up unit 8 moves forward along failure cable 3, field signal pick-up unit 8 has waveform 11 to show all the time, the waveform of having crossed position field signal pick-up unit 8 demonstrations afterwards of trouble spot 5 is that waveform 12 shows that waveform sudden change place here and now is the position at Method of Cable Trouble Point place by 11 rapid attenuating mutations.
Fig. 4, provided field signal pick-up unit 8 and after the trouble spot 5 of cable 3, detected the waveform 12 that field signal 13 shows, this waveform is the rapid decay waveform of waveform 11 damped oscillation waveforms, continuation backward is mobile again along failure cable 3 when field signal pick-up unit 8, and the waveform 12 that field signal pick-up unit 8 shows is decayed gradually and become straight line.
During localization of fault, apply periodic impacting with high pressure pulse signal in the fault of cable under test and screen layer or another fault between mutually, because the distribution parameter characteristic of cable self and the balance of cable are relative, it must be to form damp oscillatory wave in the cable between signal source and trouble spot to produce field signal along cable transmission and to external radiation for the response of impacting with high pressure pulse signal, forward position, trouble spot cable all can be received this field signal 13, and the event of non-impact current loop does not have this electromagnetic field signal behind the trouble spot; Change with the field signal that can detect in this field signal 13, the field signal pick-up unit begins along the variation of cable detection field signal from impacting with high pressure pulse signal source end, to the trouble spot, all should be able to receive the ripple field signal that damp oscillatory wave produces, and can not receive this field signal behind the trouble spot, field signal is exactly the position at Method of Cable Trouble Point place from having to pairing cable position, unconverted place.
Wherein, consider that cable fault may occur in any position of cable, if occur in the top of cable, inductance in the cable distribution parameter, electric capacity be very for a short time to be not enough to produce damp oscillatory wave, so impacting with high pressure pulse signal source output of the present invention should be connected in series the high pressure resonance reactor, in the common impacting with high pressure pulse signal source commonly used pulsed capacitance is arranged all, as long as it is promptly available to increase the high pressure resonance reactor.
The field signal induction receiving coil 10 of described field signal pick-up unit must be an air core coil, one just can be detected, two detections that can compare, can also survey the cable louding path, but can use the field signal induction receiving coil 10 of ribbon core or magnetic core anything but, cause erroneous judgement otherwise can oneself produce damped oscillation.
Its coil plane should be parallel to cable under test when the field signal induction receiving coil 10 of described field signal pick-up unit used, and guaranteed that the magnetic line of force that characterizes field signal passes field signal induction receiving coil.
Field signal pick-up unit 8 of the present utility model can also be used to the detection streamer path, when field signal induction receiving coil 10 places on the cable under test position, waveform 11 amplitude maximums then, go ahead along ground this moment again, detecting display device has waveform 11 to show all the time, there is not waveform 11 to show if detect display device, the cable trace deflection is described, should adjust the direction (left or right) of selecting cable trace, during waveform 11 amplitudes maximum magnetic field induction receiving coil 10 in the path on ground below it correspondence be exactly the path of underground cable.
Claims (1)
1. the device with shock oscillation ripple detection streamer trouble spot and cable trace trend is characterized in that this device comprises that the ground connection output terminal (1b) of common impacting with high pressure pulse signal source (1) is connected on the top ground wire (4) of failure cable to be measured (3); The high-voltage output end (1a) of described common impacting with high pressure pulse signal source (1) connects an end of high pressure resonance reactor (2); The other end of described high pressure resonance reactor (2) is connected on the fault phase (7) of failure cable to be measured; The terminal ground wire (6) of described failure cable to be measured (3) disconnects with ground; Described going up at failure cable (3) produces damp oscillatory wave along failure cable (3) transmission and outside radiation field signal (13); Described field signal pick-up unit (8) and field signal induction receiving coil (10) is connected, and describedly is presented on the display unit (9) of field signal pick-up unit (8) at Method of Cable Trouble Point (5) left side damped oscillation waveform (11) before; Described Method of Cable Trouble Point (5) the right side afterwards sharply damped oscillation waveform (12) of decay is presented on the display unit (9) of field signal pick-up unit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120186397XU CN202093127U (en) | 2011-06-03 | 2011-06-03 | Device for detecting failure points and path orientation of cables by principle of impact oscillation waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120186397XU CN202093127U (en) | 2011-06-03 | 2011-06-03 | Device for detecting failure points and path orientation of cables by principle of impact oscillation waves |
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| CN202093127U true CN202093127U (en) | 2011-12-28 |
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| CN201120186397XU Expired - Lifetime CN202093127U (en) | 2011-06-03 | 2011-06-03 | Device for detecting failure points and path orientation of cables by principle of impact oscillation waves |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759686A (en) * | 2012-07-26 | 2012-10-31 | 山东科汇电力自动化有限公司 | Method for locating power cable faults |
| CN103200019A (en) * | 2012-01-04 | 2013-07-10 | 中兴通讯股份有限公司 | Method and system for fault location |
| CN104655984A (en) * | 2015-01-12 | 2015-05-27 | 国家电网公司 | Method for testing power cable fault |
| CN108181552A (en) * | 2018-01-17 | 2018-06-19 | 武汉科技大学 | Buried cable fault detection system and its fault detection method |
| CN112557830A (en) * | 2020-12-29 | 2021-03-26 | 广东电网有限责任公司佛山供电局 | Cable fault point positioning device and method |
| CN113093267A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for identifying cable line path |
| CN113093268A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for automatically identifying cable line path |
| CN113093269A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for automatically identifying cable line path |
| CN116540028A (en) * | 2023-06-09 | 2023-08-04 | 广州友智电气技术有限公司 | Intelligent positioning method and system for cable faults |
-
2011
- 2011-06-03 CN CN201120186397XU patent/CN202093127U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200019A (en) * | 2012-01-04 | 2013-07-10 | 中兴通讯股份有限公司 | Method and system for fault location |
| CN103200019B (en) * | 2012-01-04 | 2017-12-08 | 中兴通讯股份有限公司 | A kind of Fault Locating Method and system |
| CN102759686A (en) * | 2012-07-26 | 2012-10-31 | 山东科汇电力自动化有限公司 | Method for locating power cable faults |
| CN104655984A (en) * | 2015-01-12 | 2015-05-27 | 国家电网公司 | Method for testing power cable fault |
| CN108181552A (en) * | 2018-01-17 | 2018-06-19 | 武汉科技大学 | Buried cable fault detection system and its fault detection method |
| CN112557830A (en) * | 2020-12-29 | 2021-03-26 | 广东电网有限责任公司佛山供电局 | Cable fault point positioning device and method |
| CN113093267A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for identifying cable line path |
| CN113093268A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for automatically identifying cable line path |
| CN113093269A (en) * | 2021-05-08 | 2021-07-09 | 北京潞电电气设备有限公司 | Method for automatically identifying cable line path |
| CN116540028A (en) * | 2023-06-09 | 2023-08-04 | 广州友智电气技术有限公司 | Intelligent positioning method and system for cable faults |
| CN116540028B (en) * | 2023-06-09 | 2023-11-14 | 广州友智电气技术有限公司 | Intelligent positioning method and system for cable faults |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |