CN106896304A - Ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device and monitoring method - Google Patents
Ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device and monitoring method Download PDFInfo
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- CN106896304A CN106896304A CN201710253051.9A CN201710253051A CN106896304A CN 106896304 A CN106896304 A CN 106896304A CN 201710253051 A CN201710253051 A CN 201710253051A CN 106896304 A CN106896304 A CN 106896304A
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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
- G01R31/1263—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The present invention provides a kind of ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device, including monitoring support, ultra-low frequency high-pressure generator, detection joint ejection mechanism, voltage monitoring module, display module and 220V power supplys；220V power supplys are connected with ultra-low frequency high-pressure generator, ultra-low frequency high-pressure generator is connected by being laid on the wire monitored on support, detection joint ejection mechanism with two monitoring points of the on-board high-voltage cable of EMUs roof, wire on support is provided with voltage monitoring module, and voltage monitoring module is connected with display module.Monitoring device of the present invention and monitoring method have advantages below：The problems such as power-off is needed when avoiding test；Test only needs small capacitances power supply, it is not necessary to complicated huge power-supply system, is applicable to cable length on-board high-voltage cable more long；Latency insulation fault can be tested, it is to avoid actual Leakage Current is smaller and be difficult to the problem tested under 25KV voltages.
Description
Technical field
The present invention relates to the insulating of electric measurement of high pressure detection of locomotive and monitoring technology, more particularly to ultralow frequency EMUs roof is high
Pressure system insulation monitoring device and monitoring method.
Background technology
EMUs roof high-tension apparatus is outdoor installation, in order to ensure the reliability of locomotive operation, it is desirable to 25KV high-tension electricities
Gas equipment has enough High-Voltage Insulation performances with locomotive roof and earth conductor itself.In reality, the running environment of locomotive is complicated,
The insulating materials of roof high-tension apparatus will be through the infringement of harsh weather such as wind-engaging, sand, rain, snow and invading for thunder and lightning weather overvoltage
Attack, when the insulating properties of the roof high-tension apparatus of locomotive is significantly reduced, because crew and control centre cannot grasp equipment shape
State, locomotive will cause electrion, ground connection once rising pantograph, gently then cause pantograph pan with contact net bonding, support
Insulator arc-over, it is heavy then cause contact net to blow, the blast of arc extinguishing chamber of main circuit breaker porcelain vase, the major accident such as Explosion of on Arrester.
Existing Insulation monitoring technology is based on the on-board high-voltage system without high-tension cable, however, part of the train car at present
Type has on-board high-voltage cable more long, because cable length is very big, it is necessary to complicated huge power-supply system, this is to existing during test
Cost is excessively high and be difficult to for real Insulation monitoring technology.
Existing Insulation monitoring technology only detects the secondary side voltage of transformer, when very big electric current is loaded, only exhausted
Edge occur serious short trouble when could have been reacted on voltmeter, accuracy of detection is relatively low, it is impossible to detect humidified insulation, absolutely
The insulation such as conductance increase, shelf depreciation declines failure caused by edge pollution.
The content of the invention
（One）Goal of the invention：To solve above-mentioned problems of the prior art, can it is an object of the invention to provide one kind
The device of the state of insulation of power locomotive top high-pressure system of the detection with high-tension cable, crew can be by observing drivers' cab
Display and indicator lamp etc. whether be grounded or insulating properties reduction determining roof high-tension apparatus, so as to find that roof is high in time
The reduction of pressure system insulation performance or earth fault, effectively prevent and avoid accident to occur.
（Two）Technical scheme：In order to solve the above-mentioned technical problem, the technical program provides a kind of ultralow frequency EMUs roof
High-pressure system insulation monitoring and warning device, including monitoring support, ultra-low frequency high-pressure generator, detection joint ejection mechanism, voltage monitoring
Module, display module and 220V power supplys；
220V power supplys are connected with ultra-low frequency high-pressure generator, and ultra-low frequency high-pressure generator passes through to be laid on leading on monitoring support
Line, detection joint ejection mechanism are connected with two monitoring points of the on-board high-voltage cable of EMUs roof, on the wire on support
Voltage monitoring module is provided with, voltage monitoring module is connected with display module；
Ultra-low frequency high-pressure generator includes single-chip microcomputer, high-voltage switch gear, step-up transformer and A/D converter；
Voltage monitoring module includes high-voltage mutual inductor, secondary side current sensor.
Preferably, the monitoring support is segmented support, and the wire for monitoring vehicle-mounted high-tension cable is laid on segmented branch
Detection joint ejection mechanism is set on frame and in segmented node, detection joint ejection mechanism includes that shell type base, shell type base have
The bottom for having column accommodation space, column accommodation space is provided with cylinder, and the expansion link of cylinder is provided with pressure sensor, and pressure is passed
Sensor is provided with spring, and spring top is jointing, and jointing is connected with wire, on the cylinder include switching device and
Signal receiving device, signal receiving device is connected with voltage monitoring module.
Preferably, 220V voltages are 0-300V through ultra-low frequency high-pressure generator output voltage range, and frequency is 0.01-
300Hz。
Preferably, high pressure monitoring modular is also in series with protection circuit module.
Preferably, high pressure monitoring modular also includes cut-off loss angle analysis module.
Preferably, high pressure monitoring modular also includes current-voltage waveform analysis module.
Preferably, ultra-low frequency high-pressure generator is connected with two self-resetting type switches, and two self-resetting type switches are separately positioned.
Preferably, the on-board high-voltage cable of EMUs roof is arranged between two fixed pillars, on two fixed pillars
Slide rail is provided with, slide rail is provided with testing jig of creeping, testing jig of creeping is driven by Driving Stepping Motor and independent current source, survey of creeping
Examination frame includes the pulley and framework that are connected with slide rail, and the two ends of framework are fixed with two detection joint ejection mechanisms, two respectively
Individual detection joint ejection mechanism is two monitoring points of on-board high-voltage cable, and detection joint ejection mechanism includes shell type base, set
The bottom that formula base has column accommodation space, column accommodation space is provided with cylinder, and the expansion link of cylinder is provided with pressure sensing
Device, pressure sensor is provided with spring, and spring top is jointing, and jointing is connected with wire, is included on the cylinder
Switching device and signal receiving device, signal receiving device are connected with voltage monitoring module.
Ultralow frequency EMUs roof high-pressure system insulated monitoring method, comprises the following steps：
S1：Ultra-low frequency high-pressure generator is connected with vehicle-mounted 220V power supplys, the output voltage range of ultra-low frequency high-pressure generator is
0-300V, frequency is 0.01-300Hz；
S2：Ultra-low frequency high-pressure generator is connected by wire with voltage monitoring module, two detection joint ejection mechanisms；
S3：The jointing of two detection joint ejection mechanisms is pressed on the surface of on-board high-voltage cable to be tested, voltage prison
The current values and voltage value of the on-board high-voltage cable surveyed between two monitoring points of module monitors；
S4：Display module is connected with voltage monitoring module, and display module shows the monitoring numerical value of voltage monitoring module；
S5：The switch of 220V power supplys is opened, display shows the current values and voltage value between two monitoring points, works as electric current
When numerical value is higher than current monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable；Or, work as electricity
When pressure numerical value is less than voltage monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable.
Preferably, the method for two detection joint ejection mechanism vehicle-mounted high-tension cables of monitoring includes：A1, along on-board high-voltage electricity
The bearing of trend of cable presses fixed range proceeding measurement；Or a2, two the two of the detection joint ejection mechanisms vehicle-mounted high-tension cable of test
End；Or a3, two detection joint ejection mechanisms are run to abort situation, and two detection joint ejection mechanisms test on-board high-voltages
The both sides of the abort situation of cable.
（Three）Beneficial effect：Ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device and monitoring side that the present invention is provided
Method has advantages below：
1, by the on-board high-voltage system of Ultra-low Frenquency Voltage generator calibration tape high-tension cable, it is to avoid need power-off etc. during test
Problem；
2, test only needs small capacitances power supply, it is not necessary to complicated huge power-supply system, it is to avoid complicated huge power-supply system
High cost and the difficult problem realized in testing, are applicable to cable length on-board high-voltage cable more long；
3, latency insulation fault can be tested, it is to avoid actual Leakage Current is smaller and be difficult to the problem tested under 25KV voltages, can
Eliminate due to the accident potential of the roof high-tension apparatus that missing inspection is caused；
4, the current and voltage data measured can further analyze cable insulation the reduction order of severity and defect type.
Brief description of the drawings
Fig. 1 is the structural representation of the segmented support of ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device of the present invention
Figure；
Fig. 2 is that the structure of the detection joint ejection mechanism of ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device of the present invention is shown
It is intended to.
10- on-board high-voltage cables；11- segmented supports；12- detection joint ejection mechanisms；13- wires；14- shell types bottom
Seat；15- column accommodation spaces；16- cylinders；17- expansion links；18- pressure sensors；19- springs；20- jointings.
Specific embodiment
The present invention is described in further details with reference to preferred embodiment, is elaborated in the following description more
Details in order to fully understand the present invention, but, the present invention obviously can be come with various other modes described different from this
Implement, those skilled in the art can in the case of without prejudice to intension of the present invention according to practical situations make it is similar promote,
Deduce, therefore should not be limited the scope of the invention with the content of this specific embodiment.
Fig. 1-2 is the schematic diagram of embodiments of the invention, it should be noted that this accompanying drawing only as an example, be not by
Drawn according to the condition of equal proportion, and should not be construed as limiting in this, as to actual requirement protection domain of the invention.
Existing Insulation monitoring technology is based on the on-board high-voltage system without high-tension cable, however, part of the train car at present
Type has on-board high-voltage cable 10 more long, because cable length is very big, it is necessary to complicated huge power-supply system, this is right during test
Cost is excessively high and be difficult to for the Insulation monitoring technology of reality.
Existing Insulation monitoring technology only detects the secondary side voltage of transformer, when very big electric current is loaded, only exhausted
Edge occur serious short trouble when could have been reacted on voltmeter, accuracy of detection is relatively low, it is impossible to detect humidified insulation, absolutely
The insulation such as conductance increase, shelf depreciation declines failure caused by edge pollution.
It is an object of the invention to provide a kind of insulation of the detectable power locomotive top high-pressure system with high-tension cable
The device of state, crew can determine whether roof high-tension apparatus is grounded by observing the display and indicator lamp etc. of drivers' cab
Or insulating properties reduction, so as to find the reduction of roof high-pressure system insulating properties or earth fault in time, effectively prevent and avoid
Accident occurs.
A kind of ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device of the technical program offer, including monitoring support,
Ultra-low frequency high-pressure generator, detection joint ejection mechanism 12, voltage monitoring module, display module and 220V power supplys；
Display module is including memory, display, control panel, circuit interface, indicator lamp etc..
Display is arranged in drivers' cab, and driver can conveniently electric current, voltage change be high to determine roof in observation display screen
Whether pressure equipment is grounded or insulate reduction.When roof high voltage equipment insulation is grounded or insulation is reduced, indicator lamp is bright.
220V power supplys are connected with ultra-low frequency high-pressure generator, and ultra-low frequency high-pressure generator is by being laid on monitoring support
Wire 13, detection joint ejection mechanism 12 are connected with two monitoring points of the on-board high-voltage cable 10 of EMUs roof, on support
Wire 13 be provided with voltage monitoring module, voltage monitoring module is connected with display module；
Ultra-low frequency high-pressure generator includes single-chip microcomputer, high-voltage switch gear, step-up transformer and A/D converter；
Single-chip microcomputer model AT89C55DW.
Voltage monitoring module includes high-voltage mutual inductor, secondary side current sensor.
The monitoring support is segmented support 11, and the wire 13 for monitoring vehicle-mounted high-tension cable 10 is laid on segmented support
Detection joint ejection mechanism 12 is set on 11 and in segmented node, detection joint ejection mechanism 12 includes shell type base 14, shell type
Base 14 has column accommodation space 15, and the bottom of column accommodation space 15 is provided with cylinder 16, is set on the expansion link 17 of cylinder 16
Have a pressure sensor 18, pressure sensor 18 is provided with spring 19, the top of spring 19 is jointing 20, jointing 20 with lead
Line 13 is connected, and switching device and signal receiving device are included on the cylinder 16, and signal receiving device connects with voltage monitoring module
Connect.
220V voltages are 0-300V through ultra-low frequency high-pressure generator output voltage range, and frequency is 0.01-300Hz.
High pressure monitoring modular is also in series with protection circuit module.During detection, added with the high-tension electricity of 25KV on locomotive roof, it is
Prevent artificial maloperation and cause personal injury, therefore design protection circuit module.
High pressure monitoring modular also includes cut-off loss angle analysis module.Such as dielectric loss angle increase, then insulating properties drop is illustrated
It is low, the order of severity for determining insulating properties reduction can also be further compared with historical data base.
High pressure monitoring modular also includes current-voltage waveform analysis module, can determine whether insulation defect type, if electric discharge property
Failure, then current-voltage waveform has frequency glitches or spike occurs, if electrical conductance failure, then without high fdrequency component.
Ultra-low frequency high-pressure generator is connected with two self-resetting type switches, and two self-resetting type switches are separately positioned.Two runbacks
Formula switch is separately mounted in drivers' cab and control box, it is necessary to which two people are respectively closed simultaneously, it is ensured that two it is simultaneously on the scene simultaneously
Can be detected during operation.
The on-board high-voltage cable 10 of EMUs roof is arranged between two fixed pillars, and two fixed pillars are provided with cunning
Rail, slide rail is provided with testing jig of creeping, and testing jig of creeping is driven by Driving Stepping Motor and independent current source, testing jig bag of creeping
The pulley and framework being connected with slide rail are included, the two ends of framework are fixed with two detection joint ejection mechanisms 12, two spies respectively
It is two monitoring points of on-board high-voltage cable 10 to survey joint ejection mechanism 12, and detection joint ejection mechanism 12 includes shell type base
14th, shell type base 14 has column accommodation space 15, and the bottom of column accommodation space 15 is provided with cylinder 16, the expansion link of cylinder 16
17 are provided with pressure sensor 18, and pressure sensor 18 is provided with spring 19, and the top of spring 19 is jointing 20, jointing
20 are connected with wire 13, and switching device and signal receiving device, signal receiving device and voltage monitoring are included on the cylinder 16
Module is connected.
A kind of monitoring support of ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device is segmented support 11, segmentation
The switching device and signal receiving device of the detection joint ejection mechanism 12 of node are connected by 3G network with remote server, electricity
Pressure monitoring modular is connected by signal receiving device, 3G network and remote server.
The Monitoring Data of remote server Real-time Collection voltage monitoring module, when fault-signal is found, is connect by signal
Receiving apparatus and switching device sectional monitoring on-board high-voltage cable 10, can fast monitored be out of order the particular location of generation, it is convenient and
When investigate failure.
The Monitoring Data of remote server Real-time Collection voltage monitoring module, when fault-signal is found, is connect by signal
Receiving apparatus control driver part motor drives testing jig stepping of creeping to monitor vehicle-mounted high-tension cable 10 again, can fast monitored go out therefore
Hinder the particular location for occurring, convenient investigation failure in time.
By remote server remote monitoring on-board high-voltage cable 10, car group personnel can be avoided from disperseing energy to monitor majority
According to the insulating properties of remote server remote auto monitoring on-board high-voltage cable 10 can also avoid car group personnel because energy has
Limit, the problem that causing trouble cannot find in time further strengthens the real-time monitoring to the insulating properties of on-board high-voltage cable 10, also
The requirement technical ability burden for increasing car group personnel higher due to high pressure monitoring to the professional operation of personnel can be avoided.
By the on-board high-voltage system of Ultra-low Frenquency Voltage generator calibration tape high-tension cable, it is to avoid need power-off during test
The problems such as；Test only needs small capacitances power supply, it is not necessary to complicated huge power-supply system, it is to avoid complicated huge power-supply system
High cost and the difficult problem realized in testing, are applicable to cable length on-board high-voltage cable 10 more long；Can test latent
Volt property insulation fault, it is to avoid actual Leakage Current is smaller and be difficult to the problem tested under 25KV voltages, can eliminate because missing inspection is made
Into roof high-tension apparatus accident potential；The current and voltage data measured can further analyze the cable insulation serious journey of reduction
Degree and defect type.
Ultralow frequency EMUs roof high-pressure system insulated monitoring method, comprises the following steps：
S1：Ultra-low frequency high-pressure generator is connected with vehicle-mounted 220V power supplys, the output voltage range of ultra-low frequency high-pressure generator is
0-300V, frequency is 0.01-300Hz；
S2：Ultra-low frequency high-pressure generator is connected by wire 13 with voltage monitoring module, two detection joint ejection mechanisms 12；
S3：Two jointings of detection joint ejection mechanism 12 20 are pressed on the surface of on-board high-voltage cable 10 to be tested,
The current values and voltage value of the on-board high-voltage cable 10 between two monitoring points of voltage monitoring module monitors；
S4：Display module is connected with voltage monitoring module, and display module shows the monitoring numerical value of voltage monitoring module；
S5：The switch of 220V power supplys is opened, display shows the current values and voltage value between two monitoring points, works as electric current
When numerical value is higher than current monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable 10；Or, when
When voltage value is less than voltage monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable 10.
The method that two detection joint ejection mechanisms 12 monitor vehicle-mounted high-tension cable 10 includes：A1, along on-board high-voltage cable
10 bearing of trend presses fixed range proceeding measurement；Or a2, two detection joint ejection mechanisms 12 test vehicle-mounted high-tension cable 10
Two ends；Or a3, two detection joint ejection mechanisms 12 are run to abort situation, and two detection joint ejection mechanisms 12 are tested
The both sides of the abort situation of on-board high-voltage cable 10.
Above content is the explanation to the preferred embodiment of the invention, and those skilled in the art can be helped more to fill
Ground is divided to understand the technical scheme of the invention.But, these embodiments are merely illustrative, it is impossible to assert the invention
Specific embodiment be only limitted to the explanation of these embodiments.The invention person of an ordinary skill in the technical field is come
Say, without departing from the concept of the premise of the invention, some simple deductions and conversion can also be made, should all be considered as belonging to
The protection domain of the invention.
Claims (10)
1. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device, it is characterised in that：Including monitoring support, ultra-low frequency high-pressure
Generator, detection joint ejection mechanism, voltage monitoring module, display module and 220V power supplys；
220V power supplys are connected with ultra-low frequency high-pressure generator, and ultra-low frequency high-pressure generator passes through to be laid on leading on monitoring support
Line, detection joint ejection mechanism are connected with two monitoring points of the on-board high-voltage cable of EMUs roof, on the wire on support
Voltage monitoring module is provided with, voltage monitoring module is connected with display module；
Ultra-low frequency high-pressure generator includes single-chip microcomputer, high-voltage switch gear, step-up transformer and A/D converter；
Voltage monitoring module includes high-voltage mutual inductor, secondary side current sensor.
2. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：It is described
Monitoring support is segmented support, and the wire for monitoring vehicle-mounted high-tension cable is laid on segmented support and is set in segmented node
Detection joint ejection mechanism, detection joint ejection mechanism includes that shell type base, shell type base have column accommodation space, and column is held
Bottom between being empty is provided with cylinder, and the expansion link of cylinder is provided with pressure sensor, and pressure sensor is provided with spring, spring top
Portion is jointing, and jointing is connected with wire, and switching device and signal receiving device are included on the cylinder, and signal is received
Device is connected with voltage monitoring module.
3. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：220V
Voltage is 0-300V through ultra-low frequency high-pressure generator output voltage range, and frequency is 0.01-300Hz.
4. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：High pressure
Monitoring modular is also in series with protection circuit module.
5. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：High pressure
Monitoring modular also includes cut-off loss angle analysis module.
6. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：High pressure
Monitoring modular also includes current-voltage waveform analysis module.
7. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：It is ultralow
Frequency high pressure generator is connected with two self-resetting type switches, and two self-resetting type switches are separately positioned.
8. ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device according to claim 1, it is characterised in that：Motor-car
The on-board high-voltage cable of group roof is arranged between two fixed pillars, and two fixed pillars are provided with slide rail, and slide rail is provided with
Creep testing jig, testing jig of creeping is driven by Driving Stepping Motor and independent current source, testing jig of creeping includes being connected with slide rail
Pulley and framework, the two ends of framework are fixed with two detection joint ejection mechanisms, two detection joint ejection mechanisms respectively
It is two monitoring points of on-board high-voltage cable, detection joint ejection mechanism includes that there is column to house for shell type base, shell type base
Space, the bottom of column accommodation space is provided with cylinder, and the expansion link of cylinder is provided with pressure sensor, and pressure sensor is provided with
Spring, spring top is jointing, and jointing is connected with wire, includes that switching device and signal receive dress on the cylinder
Put, signal receiving device is connected with voltage monitoring module.
9. ultralow frequency EMUs roof high-pressure system insulated monitoring method, it is characterised in that comprise the following steps：
S1：Ultra-low frequency high-pressure generator is connected with vehicle-mounted 220V power supplys, the output voltage range of ultra-low frequency high-pressure generator is
0-300V, frequency is 0.01-300Hz；
S2：Ultra-low frequency high-pressure generator is connected by wire with voltage monitoring module, two detection joint ejection mechanisms；
S3：The jointing of two detection joint ejection mechanisms is pressed on the surface of on-board high-voltage cable to be tested, voltage prison
The current values and voltage value of the on-board high-voltage cable surveyed between two monitoring points of module monitors；
S4：Display module is connected with voltage monitoring module, and display module shows the monitoring numerical value of voltage monitoring module；
S5：The switch of 220V power supplys is opened, display shows the current values and voltage value between two monitoring points, works as electric current
When numerical value is higher than current monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable；Or, work as electricity
When pressure numerical value is less than voltage monitoring threshold value, show the insulation values reduction between two test points of on-board high-voltage cable.
10. ultralow frequency EMUs roof high-pressure system insulated monitoring method according to claim 9, it is characterised in that：Two
The method that individual detection joint ejection mechanism monitors vehicle-mounted high-tension cable includes：A1, along the bearing of trend of on-board high-voltage cable by solid
Set a distance proceeding measurement；Or a2, two two ends of the detection joint ejection mechanisms vehicle-mounted high-tension cable of test；Or a3, two detections
Joint ejection mechanism is run to abort situation, and two detection joint ejection mechanisms test the abort situation of vehicle-mounted high-tension cable
Both sides.
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| CN201710253051.9A CN106896304A (en) | 2017-04-18 | 2017-04-18 | Ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device and monitoring method |
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| CN201710253051.9A CN106896304A (en) | 2017-04-18 | 2017-04-18 | Ultralow frequency EMUs roof high-pressure system insulation monitoring and warning device and monitoring method |
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| CN108872912A (en) * | 2018-08-28 | 2018-11-23 | 中车兰州机车有限公司 | The test device of power locomotive top insulation detection device |
| CN113075507A (en) * | 2021-03-29 | 2021-07-06 | 云南电网有限责任公司曲靖麒麟供电局 | High-voltage measuring device |
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| CN2729735Y (en) * | 2004-03-23 | 2005-09-28 | 哈尔滨凯讯电子有限责任公司 | 0.1 H2 electronic ultra-low frequency AC voltage test apparatus |
| CN201440161U (en) * | 2009-07-28 | 2010-04-21 | 中国北车集团大同电力机车有限责任公司 | Locomotive top insulation detection equipment for locomotive |
| CN202256586U (en) * | 2011-09-29 | 2012-05-30 | 成都畅通机车车辆技术开发有限公司 | Dielectric withstand voltage testing device for roof of electric locomotive |
| CN203025314U (en) * | 2013-01-06 | 2013-06-26 | 中国化学工程第六建设有限公司 | Ultralow-frequency high-voltage generating device |
| CN104330733A (en) * | 2014-11-21 | 2015-02-04 | 西安伯龙高铁电气有限公司 | Train roof insulation detection device |
| CN104360247A (en) * | 2014-11-21 | 2015-02-18 | 西安伯龙高铁电气有限公司 | Train insulation detecting method |
| CN204302336U (en) * | 2014-11-24 | 2015-04-29 | 武汉华电高科电气设备有限公司 | A kind of ultra-low frequency high-pressure generator |
| CN204495933U (en) * | 2015-03-25 | 2015-07-22 | 贵州电网公司六盘水供电局 | Vehicle cable fault integrated test system |
| CN204789663U (en) * | 2015-05-29 | 2015-11-18 | 西安交通大学 | Exponential waveform high voltage generator is used in insulating diagnosis of distribution cable |
| CN205080192U (en) * | 2015-11-03 | 2016-03-09 | 北京易和恒普电子技术有限公司 | A intelligent insulation tester for track transportation vehicles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872912A (en) * | 2018-08-28 | 2018-11-23 | 中车兰州机车有限公司 | The test device of power locomotive top insulation detection device |
| CN113075507A (en) * | 2021-03-29 | 2021-07-06 | 云南电网有限责任公司曲靖麒麟供电局 | High-voltage measuring device |
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