CN108973693A - A kind of contact net power supply high-pressure system with Insulation monitoring - Google Patents
A kind of contact net power supply high-pressure system with Insulation monitoring Download PDFInfo
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- CN108973693A CN108973693A CN201810609750.7A CN201810609750A CN108973693A CN 108973693 A CN108973693 A CN 108973693A CN 201810609750 A CN201810609750 A CN 201810609750A CN 108973693 A CN108973693 A CN 108973693A
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- Prior art keywords
- pressure system
- insulation monitoring
- contact
- voltage
- pantograph
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The contact net power supply high-pressure system with Insulation monitoring that the invention discloses a kind of, pantograph, high-voltage circuitbreaker, high voltage isolator, high-tension transformer are sequentially connected.Pantograph is contacted with contact net, and one end of high voltage potential transformer primary side is connected between pantograph and high-voltage circuitbreaker, and the other end is connected to the ground.Battery passes sequentially through inverter, Insulation monitoring electrical power contact device is connected to the secondary side of high voltage potential transformer.High-tension transformer is connected with rectifier, hyperbaric chamber door is provided between high-tension transformer and rectifier, high-pressure system includes the block contact for reflecting hyperbaric chamber door opening and closing state.When meet simultaneously pantograph be in arciform state drops, high voltage isolator is in an off state and hyperbaric chamber door is in close state when, just can be carried out high-pressure system Insulation monitoring.It is impaired and cause system cisco unity malfunction that the present invention is able to solve high-pressure system insulation, and then contact net is caused to trip, or even the technical issues of blow contact net, influence railway transportation.
Description
Technical field
The present invention relates to Railway Electric fields, examine more particularly, to a kind of band insulation applied to railway engineering working truck
The contact net power supply high-pressure system of survey.
Background technique
Currently, railroad maintenance workload also increasingly increases, large-scale maintainer with the continuous growth of China railways total kilometrage
Tool has become the main power of China railways maintenance, has tens mechanized construction teams to be active in ten thousand li of railway lines daily
On.Throughout the year in field work, severe cold of fighting, bucket heat, are the development of China railways cause, especially in recent years for these construction teams
The speed-raising of railway is made that huge contribution.In order to solve railroad maintenance fleet in the problem concerning life in field, each road bureau is all vehicle
Team is equipped with the train of camping for having mechanized construction operation function.These camp trains be based on passenger train vehicle transformation and
Come, is provided between sleeping berth, the facilities such as kitchen and dining room.In the prior art, CN205890886U, CN106080625A,
The patents such as CN202389375U, CN101386305B, CN201712613U, CN201283866Y, CN101386305A provide
The structure of this train of camping.
The train of camping of mechanized construction team is typically all to take electricity from bus stop on the way, is responsible for by water power section, and place
The time that train is sought in each station stop is all very short, and water power section must frequently arrive construction team and connect electricity.And these stops on the way
It stands typically small station, the transformer capacity on small station is all smaller, and no normal direction train of camping provides the electric energy for comparing large capacity,
So train of camping all has the diesel generating set provided for oneself.Many times, especially in summer and use in winter air-conditioning
When generally all from diesel generating set to train power supply of camping.Massive diesel-fuel is consumed by diesel generating set power generation, simultaneously
Environment is caused seriously to pollute, the noise that generating set issues also causes interference to construction team member and surrounding resident.In addition, bavin
The capacity of oily generating set is also little, and many electrical equipments such as electromagnetic stove, electric shower-bath, refrigerator etc. are not all available on vehicle.
However, the electrified mileage of China railways is all being increased every year with very high speed at present, each main line is substantially electrified,
Electric railway from now on will be more and more, if often camping in the mechanized construction of electrified section operation is equipped with one on train
The system that set directly can take electricity from contact net can obtain great Rong no matter the train that can make to camp is parked in where from contact net
The electric energy of amount fundamentally solves various drawbacks of diesel generating set so that water power section be avoided frequently to connect the trouble of electricity.
Currently, in order to solve to camp train electricity consumption the technical issues of, house trailer is generally provided with contact net power supply,
Contact net voltage is converted into civilian three-phase four-wire system voltage.Contact net power supply is flowed by pantograph from contact net, because
The control of this pantograph and main circuit breaker is the key that system safe and reliable operation.High-pressure system working environment is severe, need through
Often bear the invasion exposed to the sun and rain with frost and snow dust storm.Insulation is normally the premise that high-pressure system works normally, and high-pressure system is most easy
Breaking down is insulation fault.If high-pressure system insulation is impaired, gently if system cisco unity malfunction, it is heavy then contact net is caused to be jumped
Lock, or even contact net can be blown, influence railway transportation.Therefore it needs often to check high-pressure system insulation, to ensure to be
System works normally, and does not influence railway contact line power supply.
In the prior art, electric locomotive at present is widely used roof high-voltage isulation detection device, but the device is simultaneously
It is not suitable for contact net powersupply system, the main reason is that:
(1) existing roof high-voltage isulation detection device and high-tension transformer are not interlocked from circuit isolation signals, if high
Pressure transformer is not isolated from circuit and carries out Insulation monitoring, will lead to high-voltage insulating system overcurrent protection；
(2) high-voltage isulation detection device need to be chain with hyperbaric chamber door, and existing roof high-voltage isulation detection device is without this company
Lock signal interface.
It is a kind of using new structural contact net power supply electricity therefore, it is necessary to be found according to contact net power supply particular/special requirement
Source high-pressure system and its insulation detecting method.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of contact net power supply high-pressure system with Insulation monitoring,
It is impaired and cause system cisco unity malfunction to solve high-pressure system insulation, and then cause contact net to trip, or even blow contact
Net, the technical issues of influencing railway transportation.
In order to achieve the above-mentioned object of the invention, it is high to specifically provide a kind of contact net power supply with Insulation monitoring by the present invention
The technic relization scheme of pressure system, a kind of contact net power supply high-pressure system with Insulation monitoring, comprising: battery, inversion
Device, Insulation monitoring electrical power contact device, high voltage potential transformer, pantograph, high-voltage circuitbreaker, high-tension fuse, high_voltage isolation are opened
Pass and high-tension transformer.The pantograph, high-voltage circuitbreaker, high-tension fuse, high voltage isolator, high-tension transformer successively phase
Even.The pantograph is contacted with contact net, and one end of the high voltage potential transformer primary side is connected to the pantograph and height
Between voltage breaker, the other end is connected to the ground.The battery passes sequentially through inverter, Insulation monitoring electrical power contact device is connected to
The secondary side of the high voltage potential transformer.Set through walls is arranged on cable between the high-voltage circuitbreaker and high-tension fuse
Pipe.The high-tension transformer is connected with rectifier, and hyperbaric chamber door is provided between the high-tension transformer and rectifier, described
High-pressure system further includes being connected with hyperbaric chamber door, for reflecting the hyperbaric chamber door block contact of the hyperbaric chamber door opening and closing state.
When meeting simultaneously, pantograph is in the arciform state of drop, high voltage isolator is in an off state and hyperbaric chamber door is in close state
When, it just can be carried out high-pressure system Insulation monitoring.
Preferably, high-pressure system insulation inspection is carried out by reading the voltage value of the high voltage potential transformer secondary side
It surveys.
Preferably, when carrying out high-pressure system Insulation monitoring, the high-tension transformer is high from the contact net power supply
It is isolated in pressure system.
Preferably, the high-pressure system includes rising bow/drop bow selection switch and high-voltage isulation detection switch, and the rising bow/
Drop bow selection switch is connected with high-voltage isulation detection switch, the control line of the high-voltage isulation detection switch and high voltage isolator
Circle is connected.When the rising bow/drop bow selection switch is in drop bow position, the high-voltage isulation detection switch is connected, by described
High-voltage isulation detection switch controls the disjunction and closure of the high voltage isolator.
Preferably, the main contacts of the Insulation monitoring electrical power contact device is connected to the inverter and high voltage potential transformer
Between, the first auxiliary contact of disconnecting switch of the high voltage isolator are connected in the coil of Insulation monitoring electrical power contact device,
First auxiliary contact of disconnecting switch are normally-closed contact.When carrying out high-pressure system Insulation monitoring, the high voltage isolator
In position is disconnected, first auxiliary contact of disconnecting switch are in closure position, and the coil of the Insulation monitoring electrical power contact device closes
It closes to carry out high-pressure system Insulation monitoring.
Preferably, the hyperbaric chamber door block contact is connected in the coil of the Insulation monitoring electrical power contact device, works as institute
State hyperbaric chamber door) when opening, hyperbaric chamber door block contact disconnects, the coil losing electricity of the Insulation monitoring electrical power contact device,
High-pressure system Insulation monitoring interrupts.
Preferably, when carrying out high-pressure system Insulation test, if the pantograph carries out rising bow operation or the high pressure
Room door is opened, then operation is invalid or high-pressure system Insulation monitoring interrupts.
Preferably, the high-pressure system further includes and the rising bow valve for controlling the current collecting bow lifting bow, the rising bow
The second auxiliary contact and hyperbaric chamber door block contact of valve and the Insulation monitoring electrical power contact device are connected, and the battery is logical
The second auxiliary contact, hyperbaric chamber door block contact are crossed as rising bow valve power supply.It is opened when the hyperbaric chamber door and causes hyperbaric chamber
Door block contact disconnects, or when the coil of the Insulation monitoring electrical power contact device obtain it is electric cause second auxiliary contact to disconnect,
The rising bow operation of the rising bow valve power loss, the rising bow valve is invalid.
Preferably, before the pantograph carries out rising bow operation, high-pressure system Insulation monitoring is carried out.If detecting high pressure
System insulation failure then forbids the pantograph to carry out rising bow operation, described after inspection has handled high-pressure system insulation fault
Pantograph just can be carried out rising bow operation.
Preferably, the second auxiliary contact of disconnecting switch of the high voltage isolator are connected on the conjunction of the high-voltage circuitbreaker
In brake cable circle, when carrying out high-pressure system Insulation monitoring, the high-voltage circuitbreaker can be closed.When the pantograph rising bow and transport
When row, it is necessary to the high-voltage circuitbreaker could be closed after in place in high voltage isolator closure.
By implementing the technical solution for the contact net power supply high-pressure system with Insulation monitoring that aforementioned present invention provides,
It has the following beneficial effects:
(1) the contact net power supply high-pressure system with Insulation monitoring of the invention be able to solve high-pressure system insulation it is impaired and
Cause system cisco unity malfunction, and then contact net is caused to trip, or even blow contact net, the technology for influencing railway transportation is asked
Topic；
(2) the contact net power supply high-pressure system of the invention with Insulation monitoring uses high voltage isolator by high pressure transformation
Device is isolated, and so that high tension apparatus as much as possible is able to carry out insulation and is checked, especially makes the higher wall bushing of failure rate
It is able to carry out high-voltage isulation detection；
(3) hyperbaric chamber door is closed and is used as high-voltage isulation by the contact net power supply high-pressure system of the invention with Insulation monitoring
Check entry condition, the personnel of can be avoided are strayed into hyperbaric chamber and lead to high pressure electric shock accidents；
(4) the contact net power supply high-pressure system of the invention with Insulation monitoring is using high-tension transformer isolation signals as height
Pressure insulation inspection condition, can be avoided high-voltage isulation and checks system overload.
Detailed description of the invention
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 technical description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other embodiments are obtained according to these attached drawings.
Fig. 1 is contact net power supply high-pressure system a kind of circuit topology of specific embodiment of the invention with Insulation monitoring
Structure chart；
Fig. 2 is contact net power supply high-pressure system a kind of Insulation monitoring of specific embodiment of the invention with Insulation monitoring
Functional block diagram；
Fig. 3 is a kind of rising bow control of contact net power supply high-pressure system specific embodiment of the invention with Insulation monitoring
Circuit diagram；
Fig. 4 is the local amplification circuit structural schematic diagram in Fig. 1；
Fig. 5 is the local amplification circuit structural schematic diagram of another part in Fig. 1；
In figure: 1- battery, 2- filter, 3- inverter, 4- high voltage potential transformer, 5- contact net, 6- pantograph, 7-
Arrester, 8- cabinet, 9- high-voltage circuitbreaker, 10- wall bushing, 11- high-tension fuse, the hyperbaric chamber 12- door block contact, 13-
High-tension transformer, 14- current transformer, 15- earth clip, 16- rail, 17- rectifier, 18- inverter, 19- output switch,
20- load, the hyperbaric chamber 21- door, 22- coil, 23- main contacts, the first auxiliary contact of 24-, the second auxiliary contact of 25-, 26- control
Coil, PV- voltmeter, YV- rising bow valve, QA1- rising bow/drop bow selection switch, QA4- high-voltage isulation detection switch, QS1- high pressure
Disconnecting switch, KM6- Insulation monitoring electrical power contact device, S5- Insulation monitoring is for electrical circuit breakers, QS1-1- high voltage isolator first
Auxiliary contact, the second auxiliary contact of QS1-2- high voltage isolator.
Specific embodiment
For the sake of quoting and understanding, will hereafter used in technical term, write a Chinese character in simplified form or abridge and be described below:
Contactor: the working principle of contactor is that after contactor coil is powered, coil current can generate magnetic field, is generated
Magnetic field make static iron core generate electromagnetic attraction to attract dynamic iron core, and contacts of contactor is driven to act, normally-closed contact disconnects, normally opened touching
Point closure, the two are linkages.When the coil is de-energized, electromagnetic attraction disappears, and armature discharges under the action of release spring, makes to touch
Point restores, and normally opened contact disconnects, normally-closed contact closure.A.C. contactor using main contact come control circuit, with auxiliary contact come
Control loop is connected.Main contact is usually normal opened contact, and auxiliary contact often has two pairs of normal opened contacts and normally closed contact.
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, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is only
It is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
As shown in attached drawing 1 to attached drawing 5, the tool of the contact net power supply high-pressure system of the invention with Insulation monitoring is given
Body embodiment, the present invention will be further explained below with reference to the attached drawings and specific examples.
Contact net power supply high-pressure system is divided into roof high-pressure system and interior high-pressure system.Roof high-pressure system is general
Including pantograph 6, insulator (not shown), arrester 7, high voltage potential transformer 4, high-voltage circuitbreaker 9, wall bushing 10
(top half)；Interior high-pressure system includes wall bushing 10 (lower half portion), high-tension fuse 11, high voltage isolator QS1
With high-tension transformer 13.Because the excitation current of high-tension transformer 13 is larger, and high-pressure side one end of high-tension transformer 13 is direct
Ground connection, so when carrying out high-pressure system Insulation monitoring, it is necessary to by high-tension transformer 13 from contact net power supply high-pressure system
Middle isolation.Then whether confirmation high voltage equipment insulation is normal, forbids rising bow if high voltage equipment insulation is impaired, checks processing insulation
Ability rising bow after failure to ensure that high-pressure system works normally, and guarantees the safety of contact net 5.As shown in Fig. 2, inverter
DC110V voltage is converted to AC120V single-phase alternating current by 18.4 secondary side of high voltage potential transformer is counter to send AC120V voltage (high pressure
The no-load voltage ratio of voltage transformer 4 is 250:1), then the single phase ac of 30kV can be obtained in the primary side of high voltage potential transformer 4
Electricity.
As shown in attached drawing 1,4 and 5, a kind of embodiment of the contact net power supply high-pressure system with Insulation monitoring, high pressure
System specifically includes: battery 1, Insulation monitoring electrical power contact device KM6, high voltage potential transformer 4, pantograph 6, is kept away inverter 3
Thunder device 7, high-voltage circuitbreaker 9, high-tension fuse 11, high voltage isolator QS1 and high-tension transformer 13.Pantograph 6, high pressure open circuit
Device 9, high-tension fuse 11, high voltage isolator QS1, high-tension transformer 13 are sequentially connected.Pantograph 6 is contacted with contact net 5, high
One end of 4 primary side of medium-voltage potential transformers is connected between pantograph 6 and high-voltage circuitbreaker 9, and the other end is connected to the ground.Arrester
7 one end is connected between pantograph 6 and high-voltage circuitbreaker 9, and the other end is connected to the ground by cabinet 8.Battery 1 passes sequentially through
Inverter 3, Insulation monitoring electrical power contact device KM6 are connected to the secondary side of high voltage potential transformer 4.High-voltage circuitbreaker 9 and high pressure
Wall bushing 10 is arranged on cable between fuse 11.High-tension transformer 13 is connected with rectifier 17, in high-tension transformer
Hyperbaric chamber door 21 is provided between 13 and rectifier 17, contact net power supply high-pressure system further includes and hyperbaric chamber 21 phases of door
Even, for reflecting the hyperbaric chamber door block contact 12 of hyperbaric chamber 21 switch states of door.In addition, the one of 13 input side of high-tension transformer
End is connected with high voltage isolator QS1, and the other end passes sequentially through current transformer 14, earth clip 15 is connected to rail 16.Rectification
Device 17, inverter 18, output switch 19, load 20 are sequentially connected.Battery 1 is connected by filter 2 with inverter 3, electric power storage
Insulation monitoring is connected between pond 1 and filter 2 for electrical circuit breakers S5.The arciform state of drop, high pressure are in when meeting pantograph 6 simultaneously
When disconnecting switch QS1 is in an off state and hyperbaric chamber door 21 is in close state, high-pressure system Insulation monitoring just can be carried out.
As shown in attached drawing 2 and attached drawing 4, voltmeter PV can be connected by the secondary side in high voltage potential transformer 4 and read
Its voltage value is taken to carry out high-pressure system Insulation monitoring.If high-pressure system insulation against ground is good, high-pressure system equivalent electricity over the ground
Hindering R is infinitely great (relative to current-limiting resistance R11), then the reading at voltage pointer table PV should be 120V or so.If high
Voltage device insulation against ground is destroyed, then the value of equivalent resistance R strongly reduces, and high-pressure section will increase earth-current, high tension voltage
The primary side current of mutual inductor 4 increases, and secondary side current increases so that 250 times of multiplying power is synchronous, then the partial pressure on current-limiting resistance R11
Also increase, at this moment the reading of voltmeter PV can decline.Can be according to the insulation of voltmeter PV read to judge high voltage component
It is no to be destroyed, while counter send to control system of the secondary side voltage of high voltage potential transformer 4 can be recorded and be handled.
Contact net power supply high-pressure system further comprises rising bow/drop bow selection switch QA1 (two self-locking) and high pressure
Insulation monitoring switch QA4 (three, lamp, band is not self-locking), rising bow/drop bow selection switch QA1 and high-voltage isulation detection switch QA4 phase
Even, high-voltage isulation detection switch QA4 is connected with the control coil 26 of high voltage isolator QS1.When rising bow/drop bow selection switch
When QA1 is in drop bow position, high-voltage isulation detection switch QA4 is connected, high_voltage isolation is controlled by high-voltage isulation detection switch QA4 and is opened
Close the disjunction and closure of QS1.
The main contacts 23 of Insulation monitoring electrical power contact device KM6 is connected between inverter 3 and high voltage potential transformer 4,
When carrying out high-pressure system Insulation monitoring, it is necessary to disconnect high voltage isolator QS1, its implementation is by high voltage isolator
The first auxiliary contact of disconnecting switch QS1-1 of QS1 is connected in the coil 22 of Insulation monitoring electrical power contact device KM6, disconnecting switch
First auxiliary contact QS1-1 is normally-closed contact.When carrying out high-pressure system Insulation monitoring, high voltage isolator QS1, which is in, to be disconnected
Position, disconnecting switch the first auxiliary contact QS1-1 be in closure position, Insulation monitoring electrical power contact device KM6 coil 22 closure with into
The detection of horizontal high voltage system insulation.
Hyperbaric chamber door block contact 12 is connected in the coil 22 of Insulation monitoring electrical power contact device KM6, when hyperbaric chamber door 21
When opening, hyperbaric chamber door block contact 12 is disconnected, the B point power loss as shown in attached drawing 3 and attached drawing 4, Insulation monitoring electrical power contact device
22 power loss of coil of KM6, high-pressure system Insulation monitoring interrupt.When carrying out high-pressure system Insulation test, if pantograph 6 carries out
Rising bow operation or hyperbaric chamber door 21 are opened, then operation is invalid or high-pressure system Insulation monitoring interrupts.
As shown in Fig. 3, high-pressure system further includes and the rising bow valve YV, rising bow valve YV for controlling the lifting bow of pantograph 6
It connects with the second auxiliary contact 25 of Insulation monitoring electrical power contact device KM6 and hyperbaric chamber door block contact 12, battery 1 passes through
Second auxiliary contact 25, hyperbaric chamber door block contact 12 are rising bow valve YV power supply.It is opened when hyperbaric chamber door 21 and causes hyperbaric chamber door
Block contact 12 disconnects, or when the coil 22 of Insulation monitoring electrical power contact device KM6 electric must cause the disconnection of the second auxiliary contact 25, liter
Bend valve YV power loss, the rising bow operation of rising bow valve YV is invalid.
The second auxiliary contact of disconnecting switch QS1-2 of high voltage isolator QS1 is connected on the closing coil of high-voltage circuitbreaker 9
In HZ (FZ is opening coil in figure), when carrying out high-pressure system Insulation monitoring, high-voltage circuitbreaker 9 can be closed.When pantograph 6
Rising bow and when running, it is necessary to high voltage isolator QS1 closure could closed high breaker 9 after in place.In figure 5, QA2
For control of high-voltage circuit breaker switch, KA1 is relay.
Before pantograph 6 carries out rising bow operation, high-pressure system Insulation monitoring is carried out.If detecting high-pressure system insulation event
Barrier then forbids pantograph 6 to carry out rising bow operation, and after inspection has handled high-pressure system insulation fault, pantograph 6 just can be carried out liter
Bow operation.
By the skill for implementing the contact net power supply high-pressure system with Insulation monitoring of specific embodiment of the invention description
Art scheme can have the following technical effects:
(1) the contact net power supply high-pressure system with Insulation monitoring of specific embodiment of the invention description is able to solve height
Pressure system insulation is impaired and causes system cisco unity malfunction, and then causes contact net to trip, or even blow contact net, influences iron
The defeated technical problem of road transport；
(2) specific embodiment of the invention description the contact net power supply high-pressure system with Insulation monitoring using high pressure every
It leaves pass high-tension transformer is isolated, so that high tension apparatus as much as possible is able to carry out insulation and check, especially make failure rate
Higher wall bushing is also able to carry out high-voltage isulation detection；
(3) specific embodiment of the invention description the contact net power supply high-pressure system with Insulation monitoring by hyperbaric chamber door
It closes and checks entry condition as high-voltage isulation, the personnel of can be avoided are strayed into hyperbaric chamber and lead to high pressure electric shock accidents；
(4) the contact net power supply high-pressure system with Insulation monitoring of specific embodiment of the invention description is by high pressure transformation
Device isolation signals check condition as high-voltage isulation, can be avoided high-voltage isulation and check system overload.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention is disclosed as above with preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from Spirit Essence of the invention and technical solution, all using in the methods and techniques of the disclosure above
Appearance makes many possible changes and modifications or equivalent example modified to equivalent change to technical solution of the present invention.Therefore,
Anything that does not depart from the technical scheme of the invention are made to the above embodiment any simple according to the technical essence of the invention
Modification, equivalent replacement, equivalence changes and modification still fall within the range of technical solution of the present invention protection.
Claims (10)
1. a kind of contact net power supply high-pressure system with Insulation monitoring characterized by comprising battery (1), inverter
(3), Insulation monitoring electrical power contact device (KM6), high voltage potential transformer (4), pantograph (6), high-voltage circuitbreaker (9), high-voltage fuse
Disconnected device (11), high voltage isolator (QS1) and high-tension transformer (13)；The pantograph (6), high-voltage circuitbreaker (9), high-voltage fuse
Disconnected device (11), high voltage isolator (QS1), high-tension transformer (13) are sequentially connected；The pantograph (6) connects with contact net (5)
Touching, one end of high voltage potential transformer (4) primary side are connected between the pantograph (6) and high-voltage circuitbreaker (9), separately
One end is connected to the ground；Described in the battery (1) passes sequentially through inverter (3), Insulation monitoring electrical power contact device (KM6) is connected to
The secondary side of high voltage potential transformer (4)；It is arranged on cable between the high-voltage circuitbreaker (9) and high-tension fuse (11)
Wall bushing (10)；The high-tension transformer (13) is connected with rectifier (17), in the high-tension transformer (13) and rectifier
(17) hyperbaric chamber door (21) is provided between, the high-pressure system further includes being connected with hyperbaric chamber door (21), described for reflecting
The hyperbaric chamber door block contact (12) of hyperbaric chamber door (21) switch state；The arciform state of drop, height are in when meeting pantograph (6) simultaneously
When pressure disconnecting switch (QS1) is in an off state and hyperbaric chamber door (21) is in close state, high-pressure system insulation just can be carried out
Detection.
2. the contact net power supply high-pressure system with Insulation monitoring according to claim 1, it is characterised in that: pass through reading
The voltage value of high voltage potential transformer (4) secondary side carries out high-pressure system Insulation monitoring.
3. the contact net power supply high-pressure system with Insulation monitoring according to claim 2, it is characterised in that: high when carrying out
When pressing system insulation detection, the high-tension transformer (13) is isolated from the contact net power supply high-pressure system.
4. the contact net power supply high-pressure system with Insulation monitoring, feature exist according to any one of the claim 1 to 3
In: the high-pressure system includes rising bow/drop bow selection switch (QA1) and high-voltage isulation detection switch (QA4), the rising bow/drop
Bow selection switch (QA1) is connected with high-voltage isulation detection switch (QA4), the high-voltage isulation detection switch (QA4) and high pressure every
The control coil (26) for leaving pass (QS1) is connected；When the rising bow/drop bow selection switch (QA1) is in drop bow position, institute is connected
High-voltage isulation detection switch (QA4) is stated, the high voltage isolator is controlled by the high-voltage isulation detection switch (QA4)
(QS1) disjunction and closure.
5. the contact net power supply high-pressure system with Insulation monitoring according to claim 4, it is characterised in that: the insulation
The main contacts (23) of detection electrical power contact device (KM6) is connected between the inverter (3) and high voltage potential transformer (4), institute
The first auxiliary contact of disconnecting switch (QS1-1) for stating high voltage isolator (QS1) are connected on Insulation monitoring electrical power contact device (KM6)
Coil (22) in, first auxiliary contact of disconnecting switch (QS1-1) be normally-closed contact；When progress high-pressure system Insulation monitoring
When, the high voltage isolator (QS1), which is in, disconnects position, and first auxiliary contact of disconnecting switch (QS1-1) are in closure position,
The coil (22) of the Insulation monitoring electrical power contact device (KM6) is closed to carry out high-pressure system Insulation monitoring.
6. according to claim 1, any one of 2, the 3 or 5 contact net power supply high-pressure system with Insulation monitoring, feature
Be: the hyperbaric chamber door block contact (12) is connected in the coil (22) of the Insulation monitoring electrical power contact device (KM6), when
When the hyperbaric chamber door (21) is opened, the hyperbaric chamber door block contact (12) is disconnected, the Insulation monitoring electrical power contact device
(KM6) coil (22) power loss, high-pressure system Insulation monitoring interrupt.
7. the contact net power supply high-pressure system with Insulation monitoring according to claim 5, it is characterised in that: carrying out height
When pressing system insulation test, if the pantograph (6) carries out rising bow operation or hyperbaric chamber door (21) is opened, nothing is operated
Effect or high-pressure system Insulation monitoring interrupt.
8. according to claim 1, any one of 2,3, the 5 or 7 contact net power supply high-pressure system with Insulation monitoring, special
Sign is: the high-pressure system further includes and the rising bow valve (YV) for controlling the pantograph (6) lifting bow, the rising bow valve
(YV) it is gone here and there with the second auxiliary contact (25) of the Insulation monitoring electrical power contact device (KM6) and hyperbaric chamber door block contact (12)
Connection, the battery (1) are the rising bow valve (YV) confession by the second auxiliary contact (25), hyperbaric chamber door block contact (12)
Electricity；Opening when the hyperbaric chamber door (21) causes hyperbaric chamber door block contact (12) to disconnect, or when Insulation monitoring power supply connects
The coil (22) of tentaculum (KM6) electric must cause second auxiliary contact (25) to disconnect, rising bow valve (YV) power loss, the liter
The rising bow operation for bending valve (YV) is invalid.
9. the contact net power supply high-pressure system with Insulation monitoring according to claim 8, it is characterised in that: it is described by
Before pantograph (6) carries out rising bow operation, high-pressure system Insulation monitoring is carried out；If detecting high-pressure system insulation fault, forbid
The pantograph (6) carries out rising bow operation, and after checking and having handled high-pressure system insulation fault, the pantograph (6) could be into
The operation of row rising bow.
10. according to claim 1, any one of 2,3,5, the 7 or 9 contact net power supply high-pressure system with Insulation monitoring,
It is characterized by: the second auxiliary contact of disconnecting switch (QS1-2) of the high voltage isolator (QS1) are connected on the height and break
In the closing coil (HZ) of road device (9), when carrying out high-pressure system Insulation monitoring, the high-voltage circuitbreaker (9) can be closed；When
Pantograph (6) rising bow and when running, it is necessary to the height could be closed after in place in the high voltage isolator (QS1) closure
Voltage breaker (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810609750.7A CN108973693B (en) | 2018-06-13 | 2018-06-13 | Contact net power supply high voltage system with insulation detection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609750.7A CN108973693B (en) | 2018-06-13 | 2018-06-13 | Contact net power supply high voltage system with insulation detection function |
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| Publication Number | Publication Date |
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| CN108973693A true CN108973693A (en) | 2018-12-11 |
| CN108973693B CN108973693B (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810609750.7A Active CN108973693B (en) | 2018-06-13 | 2018-06-13 | Contact net power supply high voltage system with insulation detection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308297A (en) * | 2018-12-12 | 2020-06-19 | 中车唐山机车车辆有限公司 | Insulation detection device |
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| CN1401517A (en) * | 2002-09-20 | 2003-03-12 | 株洲时代电子技术有限公司 | Train contact net power supply source system |
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| CN108973693B (en) | 2021-06-25 |
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