CN202512200U - Electric locomotive network side high voltage circuit insulation detection system - Google Patents
Electric locomotive network side high voltage circuit insulation detection system Download PDFInfo
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- CN202512200U CN202512200U CN2012200801699U CN201220080169U CN202512200U CN 202512200 U CN202512200 U CN 202512200U CN 2012200801699 U CN2012200801699 U CN 2012200801699U CN 201220080169 U CN201220080169 U CN 201220080169U CN 202512200 U CN202512200 U CN 202512200U
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- high voltage
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Abstract
The utility model discloses an electric locomotive network side high voltage circuit insulation detection system. The electric locomotive network side high voltage circuit insulation detection system comprises a vacuum circuit breaker, a high voltage potential transformer, a high voltage grounding switch, a lightning arrester, two pantographs which are connected in series, an insulation detection device. The insulation detection system provided by the utility model can be used to conveniently detect the insulation performance of a network side high voltage circuit and whether a grounding fault exists, thus the safe operation of the locomotive high voltage circuit is ensured.
Description
Technical field
The insulation that the utility model relates to railway systems locomotive net side high-tension circuit detects, and specifically is a kind of electric locomotive net side high-tension circuit insulation detection system.
Background technology
Electric locomotive obtains electric energy by pantograph from power supply network, through giving locomotive traction system and control system power supply behind main circuit breaker, high voltage isolator, the transformer.Net side high-tension circuit and roof high voltage equipment insulation performance descend or earth fault occurs, can cause the directly discharge over the ground of contact net 25kV high pressure, have big potential safety hazard.
With electric locomotive the high-tension circuit insulation detection device be not installed onboard at present, need be being carried out to operate comparatively loaded down with trivial details by means of pressure-resistant equipment in the storehouse when high-tension circuit insulation detects.
Summary of the invention
The utility model technical matters to be solved is; Not enough to prior art; A kind of electric locomotive net side high-tension circuit insulation detection system is provided; On locomotive, use simple low-voltage insulation detection device easily, accomplish the detection of the state of insulation of locomotive net side high-tension circuit and high voltage component, guarantee locomotive safety running.
For solving the problems of the technologies described above; The technical scheme that the utility model adopted is: a kind of electric locomotive net side high-tension circuit insulation detection system; The pantograph that comprises vacuum circuit breaker, high voltage potential transformer, high voltage ground switch, lightning arrester, two parallel connections; Be connected to the high voltage isolator of two series connection between two parallelly connected pantographs; Vacuum circuit breaker one termination is gone between the high voltage isolator of two series connection, and the vacuum circuit breaker other end is connected with the interior main circuit of locomotive, and the high voltage ground switch parallel connection inserts the vacuum circuit breaker two ends; The primary coil parallel connection of lightning arrester and high voltage potential transformer inserts between high voltage isolator and the vacuum circuit breaker; Also comprise insulation detection device, one group of secondary winding of high voltage potential transformer is connected with the insulation detection device output terminal, and the control module of insulation detection device is connected with locomotive DC 110V power supply with locomotive Electrical key switch through locomotive I/O module; Locomotive I/O module and locomotive Electrical key switch in parallel, the power module of insulation detection device is connected with locomotive DC 110V power supply terminal through the blue key switch of locomotive.
Said insulation detection device model is XL8-21.
Utilize said electric locomotive net side high-tension circuit insulation detection system to carry out following insulation detecting operation:
(1) insulation detects interlock protection: after locomotive closed the Electrical key switch, promptly there was the possibility that pantograph rises, main circuit breaker is closed in locomotive, and insulation detection device receives the locomotive high level signal, forbade that the roof insulation detects; During locomotive double heading, judge master control locomotive Electrical key switch when the locomotive network control system and close, when insulation detection device receives the high level of multi-locomotive I/O module output, forbid that the roof insulation detects; After rising blue key on the bow valve and take off and open the blue key switch of insulation detection device from locomotive, the insulation detection device power connection allows locomotive to carry out roof insulation detecting operation;
(2) the insulating property data of acquisition locomotive high-voltage circuit: start insulation detection device; The alternating-current detection signal of 50Hz is applied on the secondary winding of high voltage potential transformer; Boost through high voltage potential transformer; Progressively improve the alternating-current detection signal magnitude of voltage, along with the deterioration of locomotive roof state of insulation, the power input of converting high voltage potential transformer time limit increases rapidly; The output current of insulation detection device increases rapidly and reaches the protection value, and the output voltage when reaching the protection value through insulation detection device is judged the insulating property of locomotive high-voltage circuit;
(3) insulation detect to be accomplished the back locomotive and is recovered: after the locomotive insulation detects and accomplishes, break off being connected of insulation detection device and high voltage potential transformer, the blue key of locomotive is taken out from blue key switch, insert the locomotive liter and bend valve, to the locomotive detection of switching on.
The insulation detection system of the utility model can detect the insulating property of net side high-tension circuit easily and whether have earth fault, guarantees the safe operation of locomotive high-voltage circuit.
Description of drawings
Fig. 1 is the utility model one embodiment electric locomotive net side high-tension circuit insulation detection system circuit theory diagrams;
Wherein:
1,2: motorcycle pantograph; 3,4: high voltage isolator; 5: the roof lightning arrester; 6: vacuum circuit breaker; 7: high voltage ground switch; 8: high voltage potential transformer; 9: insulation detection device; 10: locomotive I/O module; 11: locomotive Electrical key switch; 12: connect main circuit connection terminal in the car; 13: connect locomotive DC110V power supply terminal; 14: the blue key switch of locomotive.
Embodiment
As shown in Figure 1; The utility model one embodiment comprises pantograph 1,2, the lightning arrester 5 of vacuum circuit breaker 6, high voltage potential transformer 8, high voltage ground switch 7, two series connection; Two series connection pantographs 1, be connected to the high voltage isolator 3,4 of two series connection between 2; Vacuum circuit breaker 6 one terminations go into the high voltage isolator 3 of two series connection, between 4; The vacuum circuit breaker other end is connected through main circuit in main circuit connection terminal 12 and the locomotive, and high voltage ground switch 7 parallel connections insert vacuum circuit breakers 6 two ends, lightning arrester 5 parallelly connected access vacuum circuit breakers 6 and high voltage isolator 3, between 4; The primary coil parallel connection of high voltage potential transformer 8 inserts between high voltage isolator 3,4 and the vacuum circuit breaker 8; Also comprise insulation detection device 9, one group of secondary winding of high voltage potential transformer 8 is connected with insulation detection device 9 output terminals, and the power module of insulation detection device 9 is connected with locomotive DC 110V power supply with locomotive Electrical key switch 11 through locomotive I/O module 10; Locomotive I/O module 10 and 11 parallel connections of locomotive Electrical key switch, the power module of insulation detection device 9 is connected with locomotive DC 110V power supply terminal through the blue key switch 14 of locomotive.
Insulation detection device 9 can become single-phase AC 50HZ power supply signal with direct current 110V power inverter.
Utilize the detection system of present embodiment to realize following function:
1) realizes the electrical control signal interlock protection
Locomotive cab Electrical key switching signal and network control system I/O module output signal insert the insulation detection device operation simultaneously and allow wiring point; When the locomotive Electrical key switch that closes; Be that locomotive is when existing the possibility that pantograph rises, main circuit breaker is closed; Insulation detection device receives the locomotive high level signal, forbids roof insulation inspection; During locomotive double heading, judge that by the locomotive network control system master control locomotive Electrical key switch closes after, multi-locomotive I/O module output high level forbids that insulation detects;
2) realize blue key interlocking protection
Have only use the blue key that is used to control pantograph air-supply pipeline and grounding switch on the locomotive to open key switch after; Just can connect the insulation detection device power supply; Allow to carry out roof insulation checked operation; The locomotive grounding switch was not in the ground connection position when this link was guaranteed the insulation detection, and pantograph forbids rising, and main circuit breaker is forbidden closure;
3) the insulating property data of acquisition locomotive high-voltage circuit
Start insulation detection device, the alternating-current detection signal of 50Hz is applied on the secondary winding of high voltage potential transformer, boost, locomotive high-voltage current-carrying part circuit is applied detection voltage through high voltage potential transformer.Progressively improve the alternating-current detection signal magnitude of voltage; Deterioration along with locomotive roof state of insulation; The power input of converting high voltage potential transformer time limit will increase rapidly; The output current of insulation detection device also will increase and reach the protection value rapidly, and the output voltage when insulation detection device reaches the protection value is judged the insulating property of locomotive high-voltage circuit;
4) insulation detects the locomotive recovery after accomplishing
After locomotive insulation detects and accomplishes, break off being connected of insulation detection device and high voltage potential transformer, the blue key of locomotive is taken out from blue key switch, insert locomotive and rise and bend valve, to the locomotive detection of switching on.
Claims (2)
1. electric locomotive net side high-tension circuit insulation detection system; The pantograph that comprises vacuum circuit breaker, high voltage potential transformer, high voltage ground switch, lightning arrester, two parallel connections; Be connected to the high voltage isolator of two series connection between two parallelly connected pantographs, vacuum circuit breaker one termination is gone between the high voltage isolator of two series connection, and main circuit is connected in the vacuum circuit breaker other end and the locomotive; The high voltage ground switch parallel connection inserts the vacuum circuit breaker two ends; The primary coil parallel connection of lightning arrester and high voltage potential transformer inserts between high voltage isolator and the vacuum circuit breaker, it is characterized in that, also comprises insulation detection device; One group of secondary winding of high voltage potential transformer is connected with the insulation detection device output terminal; The control module of insulation detection device is connected with locomotive DC 110V power supply with locomotive Electrical key switch through locomotive I/O module, locomotive I/O module and locomotive Electrical key switch in parallel, and the power module of insulation detection device is connected with locomotive DC 110V power supply terminal through the blue key switch of locomotive.
2. electric locomotive net side high-tension circuit insulation detection system according to claim 1 is characterized in that said insulation detection device model is XL8-21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200801699U CN202512200U (en) | 2012-03-06 | 2012-03-06 | Electric locomotive network side high voltage circuit insulation detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200801699U CN202512200U (en) | 2012-03-06 | 2012-03-06 | Electric locomotive network side high voltage circuit insulation detection system |
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| Publication Number | Publication Date |
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| CN202512200U true CN202512200U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200801699U Expired - Lifetime CN202512200U (en) | 2012-03-06 | 2012-03-06 | Electric locomotive network side high voltage circuit insulation detection system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085310A (en) * | 2014-07-10 | 2014-10-08 | 南车株洲电力机车有限公司 | Grid side circuit control method and device based on motor train unit roof grounding |
| CN105373680A (en) * | 2015-12-11 | 2016-03-02 | 南车青岛四方机车车辆股份有限公司 | Design method and device for high-pressure system of high-speed train |
| CN105938168A (en) * | 2016-06-23 | 2016-09-14 | 中车南京浦镇车辆有限公司 | AC power supply system insulation fault detection circuit |
| CN107526013A (en) * | 2017-10-17 | 2017-12-29 | 中车株洲电力机车有限公司 | Control method, device and the medium of a kind of high-voltage isulation detection of locomotive |
| CN108773301A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system control method and its application |
| CN108773300A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system and its application |
| CN108802631A (en) * | 2018-06-13 | 2018-11-13 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system insulation detecting method |
| CN108973693A (en) * | 2018-06-13 | 2018-12-11 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system with Insulation monitoring |
| CN110525275A (en) * | 2019-09-09 | 2019-12-03 | 中车株洲电力机车有限公司 | A kind of EMU alternating current-direct current circuit on side of overhead contact line and its control method |
| CN111308297A (en) * | 2018-12-12 | 2020-06-19 | 中车唐山机车车辆有限公司 | Insulation detection device |
| CN111890990A (en) * | 2020-08-12 | 2020-11-06 | 中车大连机车车辆有限公司 | A kind of electric locomotive pantograph net protection control method and system |
| CN111913055A (en) * | 2019-05-20 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive arrester monitoring device |
-
2012
- 2012-03-06 CN CN2012200801699U patent/CN202512200U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104085310A (en) * | 2014-07-10 | 2014-10-08 | 南车株洲电力机车有限公司 | Grid side circuit control method and device based on motor train unit roof grounding |
| CN104085310B (en) * | 2014-07-10 | 2016-03-02 | 南车株洲电力机车有限公司 | A kind of circuit on side of overhead contact line control method based on motor train unit roof ground connection and device |
| CN105373680A (en) * | 2015-12-11 | 2016-03-02 | 南车青岛四方机车车辆股份有限公司 | Design method and device for high-pressure system of high-speed train |
| CN105373680B (en) * | 2015-12-11 | 2019-03-22 | 中车青岛四方机车车辆股份有限公司 | The design method and device of bullet train high-pressure system |
| CN105938168A (en) * | 2016-06-23 | 2016-09-14 | 中车南京浦镇车辆有限公司 | AC power supply system insulation fault detection circuit |
| CN107526013A (en) * | 2017-10-17 | 2017-12-29 | 中车株洲电力机车有限公司 | Control method, device and the medium of a kind of high-voltage isulation detection of locomotive |
| CN108973693A (en) * | 2018-06-13 | 2018-12-11 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system with Insulation monitoring |
| CN108802631A (en) * | 2018-06-13 | 2018-11-13 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system insulation detecting method |
| CN108773300A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system and its application |
| CN108773301A (en) * | 2018-06-13 | 2018-11-09 | 株洲时代电子技术有限公司 | A kind of contact net power supply high-pressure system control method and its application |
| CN108802631B (en) * | 2018-06-13 | 2020-10-09 | 株洲时代电子技术有限公司 | Method for detecting insulation of high-voltage system of power supply of contact network |
| CN108973693B (en) * | 2018-06-13 | 2021-06-25 | 株洲时代电子技术有限公司 | Contact net power supply high voltage system with insulation detection function |
| CN108773300B (en) * | 2018-06-13 | 2021-09-10 | 株洲时代电子技术有限公司 | High-voltage system of power supply of contact network and application thereof |
| CN108773301B (en) * | 2018-06-13 | 2021-09-21 | 株洲时代电子技术有限公司 | Control method and application of high-voltage system of power supply of contact network |
| CN111308297A (en) * | 2018-12-12 | 2020-06-19 | 中车唐山机车车辆有限公司 | Insulation detection device |
| CN111913055A (en) * | 2019-05-20 | 2020-11-10 | 中车大同电力机车有限公司 | Locomotive arrester monitoring device |
| CN110525275A (en) * | 2019-09-09 | 2019-12-03 | 中车株洲电力机车有限公司 | A kind of EMU alternating current-direct current circuit on side of overhead contact line and its control method |
| CN111890990A (en) * | 2020-08-12 | 2020-11-06 | 中车大连机车车辆有限公司 | A kind of electric locomotive pantograph net protection control method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |