CN105785249A - Electric railway flashover fault locator - Google Patents
Electric railway flashover fault locator Download PDFInfo
- Publication number
- CN105785249A CN105785249A CN201610312831.1A CN201610312831A CN105785249A CN 105785249 A CN105785249 A CN 105785249A CN 201610312831 A CN201610312831 A CN 201610312831A CN 105785249 A CN105785249 A CN 105785249A
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- Prior art keywords
- electric railway
- accumulator
- pin
- line ball
- upper cover
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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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Locating Faults (AREA)
Abstract
The invention relates to an electric railway flashover fault locator and belongs to the detection device technical field. The electric railway flashover fault locator comprises a signal acquisition unit, a signal processing unit, a communication interface and a terminal device; the signal acquisition unit is used for acquiring flashover current signals along an electric railway; the signal processing unit is used for analyzing and processing the flashover current signals and sending the analysis and processing results of the flashover current signals to the terminal device through the communication interface; the signal acquisition unit is a Rogowski coil with a magnetic core; the turns ratio of the primary winding of the Rogowski coil to the secondary winding of the Rogowski coil is larger than or equal to 1.5*10<6>: 1; the magnetic core is the wire of the electric railway; and an alternating magnetic field is induced by the Rogowski coil and is converted into voltage signal Uout output through a signal processing circuit. It only needs to locate the installation position of the electric railway flashover fault locator, so that a flashover fault can be located.
Description
Technical field
The present invention relates to detecting device technical field, particularly relate to a kind of electric railway arcing fault localizer.
Background technology
Flashover refers to when the gas around solid insulator or liquid dielectric are breakdown, along the phenomenon of solid insulator surface-discharge.Voltage during its electric discharge is called flashover voltage.After there is flashover, interelectrode voltage quickly falls to zero or close to zero.Spark or electric arc in flashover passage make insulating surface hot-spot cause carbonization, damage surface insulation.
Summary of the invention
In view of this, the present invention provides a kind of electric railway arcing fault localizer, its flashover current along the line by detecting electric railway, it is possible to electric railway arcing fault is positioned, it is simple to manually overhaul.Thus more suitable for practicality.
In order to achieve the above object, the technical scheme of electric railway arcing fault localizer provided by the invention is as follows:
Electric railway arcing fault localizer provided by the invention includes signal gathering unit, signal processing unit, communication interface, terminal unit,
Described signal gathering unit is used for gathering the flashover current signal that electric railway is along the line,
Described signal processing unit is used for described flashover current signal is analyzed, is processed,
By described communication interface, the analysis of described flashover current signal, result can be sent to described terminal unit；
Wherein, described signal gathering unit is the Luo-coil with magnetic core, winding of described Luo-coil and turn ratio >=1.5 × 10 of Secondary Winding6: 1, described magnetic core is the electric wire of electric railway.
Electric railway arcing fault localizer provided by the invention also can be applied to the following technical measures to achieve further.
As preferably, described electric railway arcing fault localizer also includes administration of power supply, circuit board, and described administration of power supply includes accumulator and/or solar panel,
Signal processing unit is integrated on described circuit board,
Described administration of power supply is for powering for described circuit board.
As preferably, described administration of power supply includes accumulator and solar panel, and the electric energy that described solar panel produces can be stored in described accumulator.
As preferably, described electric railway arcing fault localizer also includes auto-induction type solar charging circuit, and described auto-induction type solar charging circuit includes control chip, charging cable,
Described control chip includes data acquisition pin, data feedback pin, charging pins, judging unit；Described accumulator is provided with the first pin, the second pin；Constituting loop between described data acquisition pin, data feedback pin, the first pin, the second pin, by described loop, described control chip can obtain the current voltage value of described accumulator,
Described charging pins is connected to described solar panel by described charging cable,
When described judging unit judges the current voltage value≤charge threshold of described accumulator, described charging cable is moved to low level by described charging pins, described solar panel, charging cable, control chip, accumulator turn on, and described solar panel charges to described accumulator；
When described judging unit judges the current voltage value >=saturation threshold of described accumulator, moving described charging cable to high level by described charging pins, described solar panel stops charging to described accumulator；
Wherein, described control chip and charging cable are integrated on described circuit board.
As preferably, described communication interface is an antenna.
As preferably, described Luo-coil, signal processing unit, communication interface, accumulator, solar panel, circuit board, antenna integrate,
Described electric railway arcing fault localizer also includes the first housing, the second housing, antenna mount；
Described first housing is one columnar structured, and described antenna mount is removably attachable to one end of described first housing, and described antenna is fixedly connected in described antenna mount；
Described first housing is provided with a breach, and described solar panel is fixed on described indentation, there；
Described accumulator is arranged in described first housing；
Described second housing includes base and upper cover, described base is fixedly connected on the other end of described first housing, it is flexibly connected between described upper cover and described base, line ball hole it is provided with between described base and described upper cover, the electric wire of electric railway is through described line ball hole so that described electric wire also passes axially through the center of described Luo-coil.
As preferably, described electric railway arcing fault localizer also includes articulated elements and detachable locking member,
One end of described base and described upper cover is hinged by described articulated elements；
Described base and described detachable upper cover can be linked together by described detachable locking member at the other end of described base and described upper cover with unloading.
As preferably, described articulated elements includes rotating shaft and pin,
One end of described base is provided with breach, one end of described upper cover is provided with projection, described breach and described projection can be entrenched togather mutually, at the through hole that the chimeric place of described base and described upper cover is communicated with, one end of described rotating shaft is provided with stop tab, the diameter of described stop tab is more than the diameter of described through hole, and described rotating shaft is also cross described base and described upper cover so that described upper cover can rotate centered by described rotating shaft；The other end of described rotating shaft is radially provided with pin-and-hole, and described pin is arranged in described pin-and-hole；
Described detachable entered part is clamping screw.
As preferably, described electric railway arcing fault localizer also includes the first line ball pad, the second line ball pad,
Described first line ball pad is arranged on described base, described second line ball pad be arranged at described on cover, between described first line ball pad and described second line ball pad, be reserved with described line ball hole.
As preferably, described first line ball pad and the second line ball pad are made by damping material.
Electric railway arcing fault localizer provided by the invention includes signal gathering unit, signal processing unit, communication interface, terminal unit, signal gathering unit is for gathering the flashover current signal that electric railway is along the line, signal processing unit is for being analyzed flashover current signal, process, by communication interface, the analysis of flashover current signal, result can be sent to terminal unit；Wherein, signal gathering unit is the Luo-coil with magnetic core, winding of Luo-coil and turn ratio >=1.5 × 10 of Secondary Winding6: 1, magnetic core is the electric wire of electric railway.When tower bar insulator generation edge flashing, power frequency flashover current i (t) arrives the earth lead on tower bar along the arc channel of insulator surface, then flows into the earth along earth lead.This electric current produces the magnetic field of alternation around earth lead, and the magnetic line of force manifests concentric circular with earth lead for the center of circle.The magnetic field of alternation is sensed by Luo-coil, converts voltage signal Uout output to through signal processing circuit.In this case, it is only necessary to the installation site of electrified ferrum railway arcing fault localizer provided by the invention is positioned, arcing fault can be positioned.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit those of ordinary skill in the art be will be clear from understanding.Accompanying drawing is only for illustrating the purpose of preferred implementation, and is not considered as limitation of the present invention.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.In the accompanying drawings:
The structural representation of first typical directions of the electric railway arcing fault localizer that Fig. 1 provides for the embodiment of the present invention；
The structural representation of a typical directions of the upper cover of application in the electric railway arcing fault localizer that Fig. 2 provides for the embodiment of the present invention；
The structural representation of second typical directions of the electric railway arcing fault localizer that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the schematic diagram after Fig. 3 pulls down upper cover；
Fig. 5 is the schematic diagram after Fig. 4 pulls down the electric wire of electric railway, the first line ball pad, the second line ball pad；
Fig. 6 is the schematic diagram after Fig. 5 pulls down base；
Fig. 6 is pulled down the structural representation after the first housing by Fig. 7；
The schematic diagram of the Luo-coil of application in the electric railway arcing fault localizer that Fig. 8 provides for the embodiment of the present invention；
The schematic diagram of the auto-induction type solar charging circuit of application in the electric railway arcing fault localizer that Fig. 9 provides for the embodiment of the present invention.
Detailed description of the invention
The present invention solves prior art Problems existing, it is provided that a kind of electric railway arcing fault localizer, its flashover current along the line by detecting electric railway, it is possible to electric railway arcing fault is positioned, it is simple to manually overhaul.Thus more suitable for practicality.
For further setting forth that the present invention reaches technological means and effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the present invention propose electric railway arcing fault localizer, its detailed description of the invention, structure, feature and effect thereof, describe in detail as after.In the following description, what different " embodiments " or " embodiment " referred to is not necessarily same embodiment.Additionally, special characteristic in one or more embodiment, structure or feature can be combined by any suitable form.
The terms "and/or", is only a kind of incidence relation describing affiliated partner, and expression can exist three kinds of relations, such as, A and/or B, concrete is interpreted as: can include A and B simultaneously, can individualism A, it is also possible to individualism B, it is possible to possess above-mentioned three kinds of any one situations.
Referring to accompanying drawing 1～8, the electric railway arcing fault localizer that the embodiment of the present invention provides includes signal gathering unit, signal processing unit, communication interface, terminal unit.Signal gathering unit is for gathering the flashover current signal that electric railway is along the line, and signal processing unit is for being analyzed flashover current signal, process, and by communication interface, the analysis of flashover current signal, result can be sent to terminal unit.Wherein, signal gathering unit is the Luo-coil with magnetic core, winding of Luo-coil and turn ratio >=1.5 × 10 of Secondary Winding6: 1, magnetic core is the electric wire of electric railway.
The electric railway arcing fault localizer that the embodiment of the present invention provides includes signal gathering unit, signal processing unit, communication interface, terminal unit, signal gathering unit is for gathering the flashover current signal that electric railway is along the line, signal processing unit is for being analyzed flashover current signal, process, by communication interface, the analysis of flashover current signal, result can be sent to terminal unit；Wherein, signal gathering unit is the Luo-coil with magnetic core, winding of Luo-coil and turn ratio >=1.5 × 10 of Secondary Winding6: 1, magnetic core is the electric wire of electric railway.When tower bar insulator generation edge flashing, power frequency flashover current i (t) arrives the earth lead on tower bar along the arc channel of insulator surface, then flows into the earth along earth lead.This electric current produces the magnetic field of alternation around earth lead, and the magnetic line of force manifests concentric circular with earth lead for the center of circle.The magnetic field of alternation is sensed by Luo-coil, converts voltage signal U to through signal processing circuitoutOutput.In this case, it is only necessary to the installation site of electrified ferrum railway arcing fault localizer provided by the invention is positioned, arcing fault can be positioned.
The most crucial exploring block of electric railway power frequency flashover current sensor is namely based on the flashover current detecting module of Luo-coil.It is formed, by two blocks of U-shaped ferrum, the iron core closed and winding forms.It is made to form the loop of a Guan Bi by the method for physics in actual use.Its umber of turn and the turn ratio of the secondary number of turn are 1500000: 1, it is simply that saying when closed-loop path works, when input current is 1500A, output electric current is 1mA.This big input-output ratio is very crucial in the application of electrified railway environment.Because in electric railway, voltage is all more than kilovolt, and flashover current is all more than 1000A rank.
Wherein, electric railway arcing fault localizer also includes administration of power supply, circuit board, and administration of power supply includes accumulator and/or solar panel.Signal processing unit is integrated on circuit boards, and administration of power supply is for powering for circuit board.
Wherein, administration of power supply includes accumulator and solar panel, and the electric energy that solar panel produces can be stored in accumulator.
Referring to accompanying drawing 9, electric railway arcing fault localizer also includes auto-induction type solar charging circuit, and auto-induction type solar charging circuit includes control chip 41, charging cable 44.Control chip 41 includes data acquisition pin, data feedback pin, charging pins, judging unit；Accumulator 42 is provided with the first pin, the second pin；Constituting loop between data acquisition pin, data feedback pin, the first pin, the second pin, by loop, control chip 41 can obtain the current voltage value of accumulator 42.Charging pins is connected to solar panel 43 by charging cable 44.When judging unit judges the current voltage value≤charge threshold of accumulator 42, charging cable is moved to low level by charging pins, solar panel 43, charging cable 44, control chip 41, accumulator 42 turn on, and solar panel 43 charges to accumulator 42.When judging unit judges the current voltage value >=saturation threshold of accumulator 42, moving charging cable 44 to high level by charging pins, solar panel 43 stops charging to accumulator 42；Wherein, control chip 41 and charging cable 44 are integrated on circuit board.In the present embodiment, control chip 41 also including charge saturated instruction pin and the saturated alarm mechanism that charges, the saturated instruction pin that charges can trigger the saturated alarm mechanism of charging.Alarm mechanism is selected from one or several in display lamp, buzzer, qq message, note, wechat message, speech message.Auto-induction type solar charging circuit also includes electric discharge pin, ground connection after the resistance of the electric discharge external one >=10k Ω of pin.Thus, when without target accumulator 42 is charged, it is possible to the electric energy produced by solar panel 43 is by circuit 45 and the release of this resistance.The model of control chip 41 is CN3063.Accumulator 42 is lithium battery.Control chip 41 is additionally operable to charge mode is controlled, and charge mode includes trickle charge pattern, constant current charging mode, constant-voltage charge pattern, constant temperature charge mode, sleep pattern.Auto-induction type solar charging circuit also includes charged state indicating mechanism, and charged state indicating mechanism is for indicating solar panel to the state of target accumulator charging.Auto-induction type solar charging circuit also includes temperature sensor, and temperature sensor is for the current temperature data of monitoring objective accumulator, and current temperature data feeds back to control chip, and control chip adjusts charge mode according to current temperature data.Charge threshold is 2.4V, and saturation threshold is 4.2V.
Wherein, communication interface is an antenna 16.
Wherein, Luo-coil 23, antenna 16, accumulator 35, solar panel 3, circuit board 32 integrate.Electric railway arcing fault localizer also includes first housing the 1, second housing, antenna mount 15.First housing 1 is columnar structured in one, and antenna mount 15 is removably attachable to one end of the first housing 1, and antenna 16 is fixedly connected in antenna mount 15 by fixing hole 27.First housing 1 is provided with a breach, and solar panel 3 is fixed on indentation, there.Accumulator 35 is arranged in the first housing 1.Second housing includes base 4 and upper cover 5, base 4 is fixedly connected on the other end of the first housing 1, is flexibly connected, is provided with line ball hole between base 4 and upper cover 5 between upper cover 5 and base 4, the electric wire 12 of electric railway is through line ball hole so that electric wire 12 also passes axially through the center of Luo-coil 23.
Wherein, electric railway arcing fault localizer also includes articulated elements and detachable locking member.One end of base 4 and upper cover 5 is hinged by articulated elements.Base 4 and upper cover 5 can be removably joined together by detachable locking member at the other end of base 4 and upper cover 5.During installation, open this detachable locking member so that after upper cover 5 rotates relative to base 4 with articulated elements for center of rotation, it is possible to be installed on the electric wire 12 of electric railway by the electric railway arcing fault localizer that the embodiment of the present invention provides.Then, after making upper cover 5 rotate relative to base 4 with articulated elements for center of rotation again, the electric railway fault locator that the embodiment of the present invention provides can be fixed on the electric wire 12 of electric railway by this detachable locking member.
Wherein, articulated elements includes rotating shaft 13 and pin 14.One end of base 4 is provided with breach (between two pedestal lobes 19), one end of upper cover 5 is provided with protruding 18, breach (between two pedestal lobes 19) can be entrenched togather mutually with protruding 18, at the through hole 20-24 that the chimeric place of base 4 and upper cover 5 is communicated with, one end of rotating shaft 13 is provided with stop tab, the diameter of the stop tab diameter more than through hole 20-24, rotating shaft 13 is also cross base 4 and upper cover 5 so that upper cover 5 can rotate centered by rotating shaft 13；The other end of rotating shaft 13 is radially provided with pin-and-hole, and pin 14 is arranged in pin-and-hole.Detachable entered part is clamping screw 21.
Wherein, electric railway arcing fault localizer also includes first line ball pad the 9, second line ball pad 6.First line ball pad 9 is arranged on base 4, and the second line ball pad 6 is arranged on upper cover 5, is reserved with line ball hole between the first line ball pad 9 and the second line ball pad 6.Wherein, the first line ball pad 9 includes the first adaptive half bore 11 of flank 10, first, and the first line ball pad 9 is fixed on base 4 by the first flank；Second line ball pad 6 includes the second flank 7 and the second adaptive half bore 8, and the second line ball pad 6 is fixed on upper cover 5 by the second flank 7；First adaptive half bore 11 and the involutory rear formation line ball hole of the second adaptive half bore 8, the electric wire for electric railway passes.
Wherein, the first line ball pad 9 and the second line ball pad 6 are made up of damping material.Thus avoiding electric railway arcing fault localizer provided by the invention to rotate relative to the electric wire 12 of electric railway or slide.
In addition, the electric railway flashover that the embodiment of the present invention provides adheres fixed bit device and also includes battery compartment 33, battery compartment 33 includes overhead gage 31, lower baffle plate 34 and is arranged on the sidewall between overhead gage 31 and lower baffle plate 34, forming accommodation space between overhead gage 31, sidewall and lower baffle plate 34, condenser 35 is contained in this accommodation space.
Antenna mount 16 is removably joined together by side opening 37 and the first housing, in order to take out battery compartment 33 by dismantling this antenna mount 15.
It is provided with the first pillar 36 between the lower baffle plate 34 of antenna mount 15 and battery compartment 33, between the overhead gage 31 of circuit board 32 and battery compartment 33, is provided with the second pillar 30 so that circuit board 32, battery compartment 33, antenna mount 15 are arranged relatively independently.
Additionally, the first housing 1 can also be split type, including Part I 1 and Part II 2, in order to the electric railway arcing fault localizer embodiment of the present invention provided by separation Part I 1 and Part II 2 is taken apart.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an electric railway arcing fault localizer, it is characterised in that include signal gathering unit, signal processing unit, communication interface, terminal unit,
Described signal gathering unit is used for gathering the flashover current signal that electric railway is along the line,
Described signal processing unit is used for described flashover current signal is analyzed, is processed,
By described communication interface, the analysis of described flashover current signal, result can be sent to described terminal unit；
Wherein, described signal gathering unit is the Luo-coil with magnetic core, winding of described Luo-coil and turn ratio >=1.5 × 10 of Secondary Winding6: 1, described magnetic core is the electric wire of electric railway.
2. electric railway arcing fault localizer according to claim 1, it is characterised in that also including administration of power supply, circuit board, described administration of power supply includes accumulator and/or solar panel,
Signal processing unit is integrated on described circuit board,
Described administration of power supply is for powering for described circuit board.
3. electric railway arcing fault localizer according to claim 2, it is characterised in that described administration of power supply includes accumulator and solar panel, the electric energy that described solar panel produces can be stored in described accumulator.
4. electric railway arcing fault localizer according to claim 3, it is characterised in that also including auto-induction type solar charging circuit, described auto-induction type solar charging circuit includes control chip, charging cable,
Described control chip includes data acquisition pin, data feedback pin, charging pins, judging unit；Described accumulator is provided with the first pin, the second pin；Constituting loop between described data acquisition pin, data feedback pin, the first pin, the second pin, by described loop, described control chip can obtain the current voltage value of described accumulator,
Described charging pins is connected to described solar panel by described charging cable,
When described judging unit judges the current voltage value≤charge threshold of described accumulator, described charging cable is moved to low level by described charging pins, described solar panel, charging cable, control chip, accumulator turn on, and described solar panel charges to described accumulator；
When described judging unit judges the current voltage value >=saturation threshold of described accumulator, moving described charging cable to high level by described charging pins, described solar panel stops charging to described accumulator；
Wherein, described control chip and charging cable are integrated on described circuit board.
5. electric railway arcing fault localizer according to claim 4, it is characterised in that described communication interface is an antenna.
6. electric railway arcing fault localizer according to claim 5, it is characterised in that described Luo-coil, signal processing unit, communication interface, accumulator, solar panel, circuit board, antenna integrate,
Described electric railway arcing fault localizer also includes the first housing, the second housing, antenna mount；
Described first housing is one columnar structured, and described antenna mount is removably attachable to one end of described first housing, and described antenna is fixedly connected in described antenna mount；
Described first housing is provided with a breach, and described solar panel is fixed on described indentation, there；
Described accumulator is arranged in described first housing；
Described second housing includes base and upper cover, described base is fixedly connected on the other end of described first housing, it is flexibly connected between described upper cover and described base, line ball hole it is provided with between described base and described upper cover, the electric wire of electric railway is through described line ball hole so that described electric wire also passes axially through the center of described Luo-coil.
7. electric railway arcing fault localizer according to claim 6, it is characterised in that also include articulated elements and detachable locking member,
One end of described base and described upper cover is hinged by described articulated elements；
Described base and described detachable upper cover can be linked together by described detachable locking member at the other end of described base and described upper cover with unloading.
8. electric railway arcing fault localizer according to claim 7, it is characterised in that described articulated elements includes rotating shaft and pin,
One end of described base is provided with breach, one end of described upper cover is provided with projection, described breach and described projection can be entrenched togather mutually, at the through hole that the chimeric place of described base and described upper cover is communicated with, one end of described rotating shaft is provided with stop tab, the diameter of described stop tab is more than the diameter of described through hole, and described rotating shaft is also cross described base and described upper cover so that described upper cover can rotate centered by described rotating shaft；The other end of described rotating shaft is radially provided with pin-and-hole, and described pin is arranged in described pin-and-hole；
Described detachable entered part is clamping screw.
9. electric railway arcing fault localizer according to claim 6, it is characterised in that also include the first line ball pad, the second line ball pad,
Described first line ball pad is arranged on described base, described second line ball pad be arranged at described on cover, between described first line ball pad and described second line ball pad, be reserved with described line ball hole.
10. electric railway arcing fault localizer according to claim 9, it is characterised in that described first line ball pad and the second line ball pad are made by damping material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312831.1A CN105785249A (en) | 2016-05-13 | 2016-05-13 | Electric railway flashover fault locator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610312831.1A CN105785249A (en) | 2016-05-13 | 2016-05-13 | Electric railway flashover fault locator |
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| CN105785249A true CN105785249A (en) | 2016-07-20 |
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| CN201610312831.1A Pending CN105785249A (en) | 2016-05-13 | 2016-05-13 | Electric railway flashover fault locator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109001613A (en) * | 2018-06-20 | 2018-12-14 | 武汉讯康电子技术有限公司 | A kind of track circuit failure In-circiut tester |
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| CN104133103A (en) * | 2014-07-31 | 2014-11-05 | 国网浙江余姚市供电公司 | Device for monitoring overhead wire load currents |
| CN205749778U (en) * | 2016-05-13 | 2016-11-30 | 北京顺程高科技有限公司 | A kind of electric railway flashover current data collecting system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001613A (en) * | 2018-06-20 | 2018-12-14 | 武汉讯康电子技术有限公司 | A kind of track circuit failure In-circiut tester |
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