CN108535598A - A kind of track circuit cable fault online test method and device - Google Patents
A kind of track circuit cable fault online test method and device Download PDFInfo
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- CN108535598A CN108535598A CN201810333255.8A CN201810333255A CN108535598A CN 108535598 A CN108535598 A CN 108535598A CN 201810333255 A CN201810333255 A CN 201810333255A CN 108535598 A CN108535598 A CN 108535598A
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- fault
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- track circuit
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- test method
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
Abstract
The present invention relates to a kind of track circuit cable fault online test method and devices, wherein the method includes：The electric parameter of acquisition trajectory circuit own signal from one or two of the first equipment and the second equipment；Fault measuring value is obtained according to the electrical parameter calculation of acquisition；By fault measuring value reference value comparison corresponding with cable different location, to determine the position of fault point.Technical solution through the invention is effectively adapted to the on-line checking to failure, has reached the more accurate technique effect of fault location.
Description
Technical field
The present invention relates to technical field of rail traffic, and in particular to a kind of track circuit cable fault online test method and
Device.
Background technology
ZPW-2000A is the main foundation equipment of train control system, has been widely used for common railway and high-speed iron at present
In the system of road.One of the characteristics of its track circuit is system extension length, farthest reaches 15km, indoor external equipment from interior to outdoor
Pass through cable connection.Audio signal in this 1700~2600Hz of cable transmission frequency ranges, and between cable core and core
Line over the ground between there are distribution capacity.
In daily utilization, cable is once generation is opened a way or short trouble, due to electric characteristic complexity, field maintenance person
It is difficult to accurate judgement location of fault.So even if failure is determined as being also needed to if cable causes farthest up to 15km's
Accurate fault point is found in range, it is difficult that this is realized in engineering maintenance.
In order to which the failure to cable is detected, exact abort situation is searched, uses a kind of offline cable event at present
Hinder location lookup equipment.For example, generally applying swept-frequency signal on cable now, each swept frequency input signal is then acquired
Voltage time-domain signal and flow through cable insulation forming circuit electric current time-domain signal, then according to the signal of acquisition calculate electricity
The frequency domain impedance of cable and phase.This detection mode is applied with detection signal on cable, if cable is in course of normal operation
In, such as in ZPW-2000A normal works, and cable is transmitting 1700-2600Hz audio signals, this audio signal is electricity
The own signal of cable normal transmission.Due to detecting the introducing of signal, cause to generate interference to this own signal.And use this
The premise of kind detection mode is to need to carry out the equipment of cable both sides vacantly, and this detection device and detection method can not be applicable in
In this equipments of ZPW-2000A, it also cannot achieve and judge cable fault in real time online.Also some cable fault positioning sides
Method, by being detected to modes such as short circuit currents, the positioning of this failure is inaccurate.
Invention content
On-line checking accurate positionin failure is carried out to the cable that ZPW-2000A is used in the prior art, cannot achieve
The technical issues of, the present invention proposes a kind of track circuit cable fault online test method and device.
A kind of track circuit cable fault online test method, the method includes：
The electric parameter of acquisition trajectory circuit own signal from one or two of the first equipment and the second equipment；
Fault measuring value is obtained according to the electrical parameter calculation of acquisition；
By fault measuring value reference value comparison corresponding with cable different location, to determine the position of fault point.
Further, first equipment is separated time collector, and the second equipment is communication interface board.
Further, include from the electric parameter of the track circuit own signal of first equipment acquisition：Cable side electricity
Press information and current information；
From second equipment acquire electric parameter include：Work(goes out voltage and work(goes out current information.
Further, the fault measuring value is calculated according to Ohm's law.
Further, the fault measuring value is impedance magnitude.
Further, the reference value obtains in the following manner：
Based on one or more of cable trough, soil characteristic, bridge characterisitic parameter, the electricity is determined by analogue system
The reference value of the cable in its different location.
Further, the reference value is impedance magnitude.
A kind of track circuit cable fault on-line measuring device, described device include：
Detection unit, for the acquisition trajectory circuit own signal from one or two of the first equipment and the second equipment
Electric parameter；
Computing unit, the electrical parameter calculation fault measuring value for being acquired according to detection unit；
Analytic unit, by fault measuring value reference value comparison corresponding with cable different location to determine fault point
Position.
Further, described device further includes storage unit,
The storage unit, for storing the reference value.
Further, described device further includes output unit,
The output unit, the fault point information output for will determine.
Technical solution through the invention is effectively adapted to ZPW-2000A equipment and is measured in real time, realizes failure
The more accurate technique effect of positioning.Other features and advantages of the present invention will be illustrated in the following description, also, part
Ground as will become apparent from the description, or understand through the implementation of the invention.The purpose of the present invention and other advantages can lead to
Pointed structure in specification, claims and attached drawing is crossed to realize and obtain.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 shows a kind of cable fault on-line detecting system schematic diagram according to the ... of the embodiment of the present invention；
Fig. 2 shows cable fault detecting device structural schematic diagrams according to the ... of the embodiment of the present invention；
Fig. 3 shows standard value curve synoptic diagram according to the ... of the embodiment of the present invention；
Fig. 4 shows the basic flow chart of cable fault detecting device fault inspecting according to the ... of the embodiment of the present invention；
Fig. 5 is shown according to the ... of the embodiment of the present invention determines showing for fault point by Actual measurement value and standard value curve comparison
It is intended to.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention clearly and completely illustrated.Obviously, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The cable fault on-line detecting system schematic diagram of the embodiment of the present invention as shown in Figure 1, as shown, cable fault
Detection device is connect by CAN (ControllerAreaNetwork, control area net(CAN)) bus with separated time collector, realization pair
The real-time acquisition of the voltage and current information of the cable side track circuit own signal of separated time collector, this own signal include
Audio signal or digital signal for being transmitted in the cable between track circuit transceiver and track etc., for example, separated time collector to
The own signal that cable fault detecting device uploads is mainly including these four different frequencies of 1700Hz, 2000Hz, 2300Hz, 2600Hz
The signal of rate；The cable fault detecting device is also connect by CAN bus or RJ45 interfaces with communication interface board, is realized to logical
The work(for the track circuit own signal that letter interface board uploads goes out voltage and work(goes out the real-time acquisition of current information, namely to transmitter
The voltage and current information of output is acquired；The cable fault detecting device is also connected by data connecting line and host computer
It connects, realizes and fault message is sent to above-mentioned host computer, shown with user's output interface in host computer.
By track circuit simulation system emulation cable in the electrical characteristic with different location under short-circuit conditions of opening a way, obtain
Electrical characteristic reference value, and form electrical characteristic curve.Electrical characteristic reference value includes distribution capacity, impedance, induction reactance, electricity over the ground
The electric parameters such as pressure, electric current.
Because there is distribution capacity over the ground in cable, and when cable is laid in the different sections such as cable trough, soil, bridge
The distribution capacity of generation is different, so when being emulated by track circuit simulation system, considers that different cable troughs, soil are special
Property, the factors such as bridge carry out comprehensive simulating, to improve the accuracy of emulation data, position and provided more for subsequent cable fault
Reliable reference.
The embodiment of the present invention by the own signal that is transmitted in above-mentioned cable fault detecting device detection cable, and based on from
Body signal determines impedance magnitude, and then is compared with reference value.Cable fault according to the ... of the embodiment of the present invention as shown in Figure 2
Structure of the detecting device schematic diagram, as shown, the cable fault detecting device includes mainly control unit, detection unit, meter
Calculate unit, analytic unit, storage unit and output unit.
As illustrative schematic diagram, as shown in figure 3, schematically illustrate by above-mentioned track circuit simulation system into
The standard value curve in the minimum this perfect condition of spacing distance under open circuit and short-circuit conditions that row emulation obtains, i.e. reference value
Curve.The impedance that the emulation under open circuit situation and under short-circuit conditions obtains is can be seen that by this schematical simulation curve
Modulus value is different, and also different with the variation of distance.After the above-mentioned simulation parameter of emulation acquisition being carried out by analogue system, on
Stating cable fault detecting device can be stored in the simulation parameter of acquisition in its storage unit.
The control unit of the cable fault detecting device of the embodiment of the present invention is to separated time collector and communication interface board two
Equipment distinguishes, and controls detection unit and acquire respectively in two equipment of above-mentioned separated time collector and above-mentioned communication interface board
One or more electric parameters, including voltage parameter and current parameters etc..As Fig. 4 shows the cable fault detecting device
The basic flow chart of fault inspecting, as shown, the detection unit detection cable of the cable fault detecting device itself is believed
The electric parameters such as number actual voltage, electric current.Specifically, the detection unit acquires the cable siding track of above-mentioned separated time collector
The electric parameters such as the voltage parameter and current parameters of circuit own signal.The detection unit sends out the above-mentioned electric parameter of detection
Measured value is calculated by the computing unit in the computing unit for giving the cable fault detecting device.Specifically, it calculates single
The voltage and current information that member is detected based on detection unit calculates according to Ohm's law and obtains impedance magnitude Z, and is sent to analysis
Unit, so that analytic unit determines the abort situation of cable according to the impedance magnitude Z and simulation parameter that calculate acquisition.
Illustratively, in the case of an open circuit, the computing unit in above-mentioned cable fault detecting device is according to the voltage of acquisition
The impedance magnitude calculated with current information is Z1, and the impedance magnitude Z1 being calculated is sent to the analytic unit.
Analytic unit in above-mentioned cable fault detecting device is after the computing unit receives impedance magnitude Z1, from described
The simulation curve parameter that storage is read in storage unit obtains the impedance magnitude Z1 from computing unit, and by the modulus of impedance
Value Z1 is compared with the simulation curve parameter, as shown in Figure 5.The distance L1 corresponding to impedance magnitude Z1 is finally set to electricity
The abort situation of cable.The analytic unit can also search the corresponding distance L1 of the impedance magnitude Z1 in the storage unit
Mode determine the abort situation of cable.In the embodiment of the present invention, in the process fault detection of cable, due to the use of be rail
The own signal of road circuit, without introducing other signals, it is possible to be measured in real time, also more safety can for detection
It leans on.And due to comparing the emulation data of measured data and relevant position, it can more improve the accurate of fault location
Property.
Fault location of the simulation parameter obtained only by analogue system for cable judges can there is centainly inclined
Difference can be in conjunction with the survey on the spot for the simulation result and field survey that analogue system is emulated preferably in the embodiment of the present invention
Measure the electric parameter that result determines different section jointly, such as above-mentioned voltage, circuit, distribution capacity electric parameter.Final choice
The mean value of emulation and entity measuring electrical parameters is as standard value.
In the case of short circuit, aforesaid way fault point is again may be by, details are not described herein by the present invention.
It should be noted that Fig. 3 is a kind of Utopian simulation curve schematic diagram, the curve of impedance magnitude is presented continuously
Extend.In Practical Project, can at a certain distance (such as 100 meters) obtain impedance point value curve, formed impedance magnitude with
The mapping table of distance or the relational graph of point value mode, and this mapping table and relational graph are stored in fault inspection
It surveys in the storage unit in device.
After above-mentioned computing unit obtains the impedance magnitude Z1, judge which of described corresponding table hinders by analytic unit
Anti- modulus value and the impedance magnitude Z1 that the computing unit obtains are closest, will be with the immediate impedances of impedance magnitude Z1
Distance L1 ' corresponding to modulus value is set to abort situation.
The cable fault detecting device can acquire above-mentioned separated time collector or above-mentioned communication in real time according to control instruction
The voltage and current information of track circuit own signal on interface board can also acquire above-mentioned separated time collector or above-mentioned simultaneously
The voltage and current information of track circuit own signal on communication interface board.Preferably, the Cable fault examination
Assembly first is acquired the voltage and current information of the cable side track circuit own signal of separated time collector.Do not have in system
When having configuration separated time collector, the control unit control detection unit of the cable fault detecting device is to realizing to communication interface
The work(for the track circuit own signal that plate uploads goes out voltage and work(goes out the real-time acquisition of current information, and is sent to computing unit.
The computing unit gets above-mentioned work(from detection unit and goes out voltage and after work(goes out current information, calculated and obtained according to Ohm's law
Impedance magnitude Z2, and it is sent to analytic unit.The analytic unit after the computing unit obtains the impedance magnitude Z2, from
Storage unit reads the simulation curve parameter of storage, and the impedance magnitude Z2 and the simulation curve parameter are compared.
Finally by corresponding to impedance magnitude Z2 distance or at a distance from corresponding to the immediate impedance magnitudes of impedance magnitude Z2
It is set to the abort situation L2 of cable.
After determining abort situation and fault type, the output unit of the cable fault detecting device by abort situation and therefore
Barrier type host computer is sent to by network or data line, shown by the output interface of host computer, with to user carry out can
It is shown depending on changing, effectively achievees the purpose that alarm.
This fault detection approach of the embodiment of the present invention, due to the use of be track circuit own signal without
Additional detection signal is introduced in cable under test, so will not be caused to the own signal of the track circuit of normal transmission in cable
Interference so detection is safer, and can achieve the purpose that detect in real time.Due to passing through simulation result or simulation result
The theoretical parameter of different distance in cable is obtained in conjunction with field survey result, and by the data actually measured and above-mentioned theory parameter
It compares and analyzes, so cable fault positioning is more accurate.Due to being measured in real time cable fault, and it is reported to
Position machine notifier processes personnel can be handled, in time so being effectively improved onsite troubleshooting efficiency.
It should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Front and back two
Do not necessarily imply that it must is a kind of sequence that priority executes between a step, does not necessarily imply that yet and centainly eliminate hair
Other unlisted steps in bright, as long as the technical problem of the present invention can be solved.Equipment, mould in specification and attached drawing
Line between block, unit not necessarily indicates a kind of directly electrical connection, and what is indicated is only the incidence relation of logic.
Each unit, module and device in specification not necessarily indicate that a kind of hardware device, software module, firmware module can fit
For the present invention.Meanwhile " first " of the invention, " second " etc. not indicate a kind of tandem, and it is related to be used only for identification
Unit, device etc..
Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should manage
Solution：Its still can with technical scheme described in the above embodiments is modified, or to which part technical characteristic into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of track circuit cable fault online test method, the method includes：
The electric parameter of acquisition trajectory circuit own signal from one or two of the first equipment and the second equipment；
Fault measuring value is obtained according to the electrical parameter calculation of acquisition；
By fault measuring value reference value comparison corresponding with cable different location, to determine the position of fault point.
2. track circuit cable fault online test method according to claim 1, wherein
First equipment is separated time collector, and the second equipment is communication interface board.
3. track circuit cable fault online test method according to claim 1 or 2, wherein
The electric parameter of track circuit own signal acquired from first equipment includes：Cable-side potential information and electric current letter
Breath；
From second equipment acquire electric parameter include：Work(goes out voltage and work(goes out current information.
4. track circuit cable fault online test method according to claim 1, wherein
The fault measuring value is calculated according to Ohm's law.
5. track circuit cable fault online test method according to claim 1 or 4, wherein
The fault measuring value is impedance magnitude.
6. track circuit cable fault online test method according to claim 1, wherein
The reference value obtains in the following manner：
Based on one or more of cable trough, soil characteristic, bridge characterisitic parameter, determine that the cable exists by analogue system
The reference value of its different location.
7. track circuit cable fault online test method according to claim 6, wherein
The reference value is impedance magnitude.
8. a kind of track circuit cable fault on-line measuring device, described device include：
Detection unit, the electricity for the acquisition trajectory circuit own signal from one or two of the first equipment and the second equipment
Gas parameter；
Computing unit, the electrical parameter calculation fault measuring value for being acquired according to detection unit；
Analytic unit, by fault measuring value reference value comparison corresponding with cable different location to determine the position of fault point
It sets.
9. track circuit cable fault on-line measuring device according to claim 8, described device further include storage unit,
The storage unit, for storing the reference value.
10. wanting the track circuit cable fault on-line measuring device described in 8 according to right, described device further includes output unit,
The output unit, the fault point information output for will determine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333255.8A CN108535598B (en) | 2018-04-13 | 2018-04-13 | Online detection method and device for cable fault of track circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333255.8A CN108535598B (en) | 2018-04-13 | 2018-04-13 | Online detection method and device for cable fault of track circuit |
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| CN108535598A true CN108535598A (en) | 2018-09-14 |
| CN108535598B CN108535598B (en) | 2020-11-17 |
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Cited By (5)
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| CN109342880A (en) * | 2018-10-23 | 2019-02-15 | 东莞市慧眼数字技术有限公司 | A kind of cable fault detection method and system |
| CN111626416A (en) * | 2020-04-24 | 2020-09-04 | 黑龙江瑞兴科技股份有限公司 | Automatic rail circuit fault diagnosis method based on deep convolutional neural network |
| CN113029562A (en) * | 2021-03-17 | 2021-06-25 | 中国航发动力股份有限公司 | Detection method and detection device for load state of lead screw transmission mechanism |
| CN113514733A (en) * | 2021-09-07 | 2021-10-19 | 中国南方电网有限责任公司超高压输电公司广州局 | Fault positioning method and device, computer equipment and storage medium |
| CN114537470A (en) * | 2022-02-11 | 2022-05-27 | 北京全路通信信号研究设计院集团有限公司 | Fault analysis method and system based on online data |
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| CN114537470A (en) * | 2022-02-11 | 2022-05-27 | 北京全路通信信号研究设计院集团有限公司 | Fault analysis method and system based on online data |
| CN114537470B (en) * | 2022-02-11 | 2023-06-30 | 北京全路通信信号研究设计院集团有限公司 | Fault analysis method and system based on-line data |
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| CN108535598B (en) | 2020-11-17 |
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Inventor after: Xu Zongqi Inventor after: Cheng Bangfeng Inventor after: Yang Xiaofeng Inventor after: Hong Fuqing Inventor after: Li Zhongqi Inventor after: Tang Wei Inventor after: Zhang Xinbin Inventor after: Zhang Qing Inventor after: Li Tao Inventor after: Fu Yating Inventor after: Xie Wenlei Inventor after: Liu Ling Inventor after: Bai Yingjie Inventor after: Han Congying Inventor after: Li Jilong Inventor after: Tan Chang Inventor after: Yang Hui Inventor after: Yang Diexuan Inventor after: Li Zhiyu Inventor after: Yin Huiyuan Inventor after: Liu Rui Inventor after: Wang Zhixin Inventor after: Yang Jin Inventor before: Yang Diexuan Inventor before: Zhang Xinbin Inventor before: Zhang Qing Inventor before: Li Tao Inventor before: Xie Wenlei Inventor before: Bai Yingjie Inventor before: Liu Rui Inventor before: Han Congying Inventor before: Li Jilong Inventor before: Yin Huiyuan Inventor before: Li Zhiyu Inventor before: Wang Zhixin Inventor before: Yang Jin Inventor before: Cheng Bangfeng Inventor before: Yang Xiaofeng Inventor before: Hong Fuqing Inventor before: Tang Wei |