CN205280879U - Online fault location system of high -speed railway and urban rail transit cable run - Google Patents
Online fault location system of high -speed railway and urban rail transit cable run Download PDFInfo
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- CN205280879U CN205280879U CN201620045794.8U CN201620045794U CN205280879U CN 205280879 U CN205280879 U CN 205280879U CN 201620045794 U CN201620045794 U CN 201620045794U CN 205280879 U CN205280879 U CN 205280879U
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- location system
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- track traffic
- urban track
- fault location
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- 238000004891 communication Methods 0.000 claims abstract description 20
- 230000004807 localization Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
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Abstract
The utility model discloses an online fault location system of high -speed railway and urban rail transit cable run, including fault locating main website and trouble acquisition terminal, the trouble acquisition terminal sets up respectively on high -speed railway and urban rail transit cable run, the trouble acquisition terminal includes microprocessor, microprocessor links to each other with high frequency travelling wave collection module, microprocessor still links to each other with communication module, communication module and fault locating main website intercommunication. The utility model discloses a harmless sampling of high frequency has improved the fault locating precision, has shortened the fault finding time greatly, provides effective guarantee for high -speed railway and urban rail transit electric power power supply system steady operation.
Description
Technical field
The utility model belongs to cable fault identification field, particularly relates to a kind of high ferro and the online fault location system of urban track traffic cable line.
Background technology
The power supply system of China's high ferro and urban track traffic adopts through the through cable line of synthetic load electric power of voltate regulator and the power supply mode of the through cable line of first order load electric power, and its system earth mode is low resistance grounding. Owing to cable is dark applying, after there is fault, position cannot be determined fast.
Normally failure cable two ends are removed from primary equipment at present, position of failure point is measured by off-line type equipment for Cable Fault Location, this kind of method complex operation step, malfunction elimination is consuming time more, cannot adapt to high ferro and urban track traffic to the needs of power supply reliability. At present, there is no effective cable fault accurate positioning means online, the online fault wireless identification of high ferro and the through cable line of urban track traffic electric power still belongs to blank.
Practical novel content
In order to solve the shortcoming of prior art, the utility model provides a kind of high ferro and the online fault location system of urban track traffic cable line. This system carries out the capable ripple of high frequency gathered in urban track traffic cable line by high frequency capable ripple acquisition module, and capable for the high frequency collected ripple is sent to localization of fault main website and positions trouble spot.
For achieving the above object, the utility model is by the following technical solutions:
A kind of high ferro and the online fault location system of urban track traffic cable line, comprising:
Localization of fault main website and fault collection terminal, described fault collection terminal is arranged on high ferro and urban track traffic cable line respectively; Described fault collection terminal comprises microprocessor, and described microprocessor ripple acquisition module capable of high frequency is connected, and described microprocessor is also connected with communication module, and described communication module intercoms mutually with localization of fault main website.
Described communication module is intercomed mutually by motion passage and localization of fault main website.
Described motion passage railway communication designated lane.
Described microprocessor is also connected with memory module.
Also power frequency component acquisition module is connected for described microprocessor.
Described power frequency component acquisition module is connected with voltage transformer.
The capable ripple acquisition module of described high frequency is also connected with microprocessor by differential filtering device or reactance transformer.
The capable ripple acquisition module of described high frequency comprises current sense device, and described current sense device is connected with A/D converter, and described A/D converter cushions module with data and is connected.
Described current sense device adopts Luo-coil structure or Rogowski coil electronic current mutual inductor.
The outside of described Luo-coil is also provided with screen layer.
The beneficial effects of the utility model are:
(1) structure of the present utility model is simple, gathers the high frequency travelling wave signal in cable line by the fault collection terminal being arranged on high ferro and urban track traffic cable line, and is sent to localization of fault main website and carries out analyzing and determining trouble spot;
(2) the utility model is by the Luo-coil in the capable ripple acquisition module of high frequency, achieve the harmless sampling of high frequency, improve localization of fault precision, substantially reduce the malfunction elimination time, for high ferro and urban track traffic power supply system steady running provide effective guarantee.
Accompanying drawing explanation
Fig. 1 is the online fault location system structural representation of high ferro of the present utility model and urban track traffic cable line;
Fig. 2 is fault collection terminal structure schematic diagram of the present utility model;
Fig. 3 is Luo-coil structural representation;
Fig. 4 is the principle schematic of localization of fault main website of the present utility model fault point.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1, high ferro of the present utility model and the online fault location system of urban track traffic cable line, comprising: localization of fault main website and fault collection terminal, and described fault collection terminal is arranged on high ferro and urban track traffic cable line respectively.
Fault collection terminal of the present utility model comprises microprocessor, described microprocessor ripple acquisition module capable of high frequency is connected, described microprocessor is also connected with communication module, described communication module intercoms mutually with localization of fault main website, and the capable ripple of high frequency that described localization of fault main website collects by receiving described high frequency capable ripple acquisition module carrys out fault point.
As shown in Figure 2, microprocessor of the present utility model adopts arm processor. This microprocessor can also adopt 51 series monolithics. Wherein, communication module is the communication circuit being made up of communication chip, and this communication module can be GPRS communication or baseband communication form.
Further, the module that communicates is intercomed mutually by motion passage and localization of fault main website. Communication module is used for collecting capable for high frequency ripple acquisition module the capable ripple of high frequency and is sent to localization of fault main website and analyzes.
Further, motion passage railway communication designated lane, for ensureing the security that information transmits.
Microprocessor in the present embodiment is also connected with memory module, and wherein, memory module is used for the capable wave datum of high frequency that storage microprocessor receives.
When there is not fault in high ferro and urban track traffic cable line, high frequency of the present utility model capable ripple acquisition module can't detect the capable ripple of high frequency, in order to determine the capable ripple acquisition module detected result of high frequency further, by microprocessor also power frequency component acquisition module be connected, carry out the power frequency component in detection streamer circuit and be sent to microprocessor and carry out processing and analyzing.
In order to the power frequency component obtained in cable line, the structure that the utility model employing power frequency component acquisition module is connected with voltage transformer. Wherein, voltage transformer adopts the voltage signal in the form detection streamer circuit of mutual inductance, and is sent in microprocessor and carries out analyzing whether power frequency component exception occurs.
The capable ripple acquisition module of high frequency of the present utility model is also connected with microprocessor by differential filtering device or reactance transformer, the capable ripple acquisition module response speed of the high frequency for improving in catastrophe failure situation.
Further, the capable ripple acquisition module of high frequency comprises current sense device, and cable line medium-high frequency travelling wave signal is converted to electric current signal by current sense device, and through A/D converter, electric current signal is sent to microprocessor.
The capable ripple acquisition module of high frequency comprises current sense device, cable line medium-high frequency travelling wave signal is converted to electric current signal by current sense device, and electric current signal is converted to numerary signal through A/D converter, in order to facilitate reading again of signal, numerary signal is resent to microprocessor and processes after being sent to data buffering module.
Further, current sense device can adopt Luo-coil structure or Rogowski coil electronic current mutual inductor.
As shown in Figure 3, Luo-coil structure is as linear current transducer, it is achieved the harmless sampling of high-frequency signal. Owing to traveling wave inherent frequency is higher, if the CT secondary side adopting tradition ferromagnetic material is sampled, waveform passivation is serious, affects positioning precision. Luo-coil is hollow mutual inductor, eliminates the impact of the non-linear of iron core and loss.
According to the law of electromagnetic induction, the output terminal induction voltage that can obtain Luo-coil is such as formula shown in (1).
In formula, M is the mutual inductance between current��carrying conductor and measuring coil.
If coil section is long-pending is denoted as A, the number of turn is denoted as n, and the length of coil center circle contour is lm, medium magnetic permeability is ��, then can obtain formula (2) according to circuital law.
M�֦�An/lm(2)
In formula, air magnetic permeability is �� �� 10, ��=4-3��H/cm��
In the present embodiment, Luo-coil adopts shielding construction, is shielded from by Luo-coil near measuring junction place ground connection, then Luo-coil is done can shields, and avoids and produces eddy current in can.
As shown in Figure 4, the principle of localization of fault main website of the present utility model fault point is:
The initial row wave utilizing cable internal fault to produce is rushed to the distance of absolute time difference when reaching cable two ends measurement point to calculate between trouble spot to cable two ends measurement point. If the time that the initial wavefront of fault arrives cable two ends measurement point is respectively TSAnd TR:
The high frequency travelling wave signal collected is sent to localization of fault main website by the fault collection terminal being loaded on cable two ends, by localization of fault main website analyze the initial row ripple ripple head that is out of order arrives time of two ends measurement point, then trouble spot represents to the distance of two ends measurement point and is respectively:
In formula: L is cable total length; V is transient state travelling wave velocity of propagation in the cable.
The initial wavefront time of arrival that both-end capable ripple location algorithm detection failure produces, it is not necessary to consider the capable ripple of follow-up reflection and transmission, principle is simple, and positioning result is accurate.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but not to the restriction of the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (10)
1. a high ferro and the online fault location system of urban track traffic cable line, it is characterised in that, comprising:
Localization of fault main website and fault collection terminal, described fault collection terminal is arranged on high ferro and urban track traffic cable line respectively; Described fault collection terminal comprises microprocessor, and described microprocessor ripple acquisition module capable of high frequency is connected, and described microprocessor is also connected with communication module, and described communication module intercoms mutually with localization of fault main website.
2. a kind of high ferro as claimed in claim 1 and the online fault location system of urban track traffic cable line, it is characterised in that, described communication module is intercomed mutually by motion passage and localization of fault main website.
3. a kind of high ferro as claimed in claim 2 and the online fault location system of urban track traffic cable line, it is characterised in that, described motion passage railway communication designated lane.
4. a kind of high ferro as claimed in claim 1 and the online fault location system of urban track traffic cable line, it is characterised in that, described microprocessor is also connected with memory module.
5. a kind of high ferro as claimed in claim 1 and the online fault location system of urban track traffic cable line, it is characterised in that, also power frequency component acquisition module is connected for described microprocessor.
6. a kind of high ferro as claimed in claim 5 and the online fault location system of urban track traffic cable line, it is characterised in that, described power frequency component acquisition module is connected with voltage transformer.
7. a kind of high ferro as claimed in claim 1 and the online fault location system of urban track traffic cable line, it is characterised in that, the capable ripple acquisition module of described high frequency is also connected with microprocessor by differential filtering device or reactance transformer.
8. a kind of high ferro as claimed in claim 1 and the online fault location system of urban track traffic cable line, it is characterized in that, the capable ripple acquisition module of described high frequency comprises current sense device, and described current sense device is connected with A/D converter, and described A/D converter cushions module with data and is connected.
9. a kind of high ferro as claimed in claim 8 and the online fault location system of urban track traffic cable line, it is characterised in that, described current sense device adopts Luo-coil structure or Rogowski coil electronic current mutual inductor.
10. a kind of high ferro as claimed in claim 9 and the online fault location system of urban track traffic cable line, it is characterised in that, the outside of described Luo-coil is also provided with screen layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045794.8U CN205280879U (en) | 2016-01-18 | 2016-01-18 | Online fault location system of high -speed railway and urban rail transit cable run |
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| CN201620045794.8U CN205280879U (en) | 2016-01-18 | 2016-01-18 | Online fault location system of high -speed railway and urban rail transit cable run |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957235A (en) * | 2018-08-01 | 2018-12-07 | 广州白云电器设备股份有限公司 | Localization method, device and the fault test set of urban rail transit contact network ground fault |
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2016
- 2016-01-18 CN CN201620045794.8U patent/CN205280879U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108957235A (en) * | 2018-08-01 | 2018-12-07 | 广州白云电器设备股份有限公司 | Localization method, device and the fault test set of urban rail transit contact network ground fault |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 |