CN104749983B - A kind of vacuum circuit breaker control circuit and method - Google Patents
A kind of vacuum circuit breaker control circuit and method Download PDFInfo
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- CN104749983B CN104749983B CN201510170877.XA CN201510170877A CN104749983B CN 104749983 B CN104749983 B CN 104749983B CN 201510170877 A CN201510170877 A CN 201510170877A CN 104749983 B CN104749983 B CN 104749983B
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
This application provides a kind of vacuum circuit breaker control circuit and method, power supply is through the miniature circuit breaker in sub-cell controlling brancher, first normally-closed contact of pantograph selective relay, mode selection switch, stop in emergency relay, UWPS master is disconnected to enable circuit, first output relay, main convertor controls circuit, second normally-closed contact of pantograph selective relay, pressure-relief valve for transformer and pantograph isolating valve, it is connected in this unit controlling brancher, in this unit controlling brancher, order as above from pantograph isolating valve to the second normally opened contact of pantograph selective relay after, it is connected with enabling relay, when train in case of emergency, make the above-mentioned relay electric-loss that stops in emergency, enable relay electric-loss in this unit branch road, so that correspondence vacuum circuit breaker disconnects, disconnected with high voltage power supply rapidly, so as to avoid the damage to train apparatus and the threat to personal safety.
Description
Technical field
Present application relates generally to electrical safety technical field, more particularly to a kind of vacuum circuit breaker control circuit
And method.
Background technology
Vacuum circuit breaker is the important electric component of EMUs high_voltage isolation, its as EMUs high pressure main circuit connect and
The main circuit breaker cut-off, plays a key effect during train safety movement, especially runs into emergency needs in train
During parking, the timely action of vacuum circuit breaker can efficiently reduce property loss and casualties.
The content of the invention
In view of this, the invention provides a kind of vacuum circuit breaker control circuit and method, when train runs into emergency
When, being capable of cutoff high power supply in time, it is ensured that stop in emergency, so as to reduce property loss and casualties.
To achieve these goals, this application provides following technical scheme：
A kind of control circuit of vacuum circuit breaker, the control circuit includes：This unit controlling brancher and sub-cell control
Branch road, described unit controlling brancher and sub-cell controlling brancher include：First normally-closed contact of pantograph selective relay
With the first normally opened contact, mode selection switch, the relay that stops in emergency, the disconnected enable circuit of UWPS master, the first output relay, master
Current transformer control circuit, the second normally-closed contact of the pantograph selective relay and the second normally opened contact, transformer pressure are released
Valve, pantograph isolating valve and main disconnected enable relay are put, wherein,
First normally-closed contact, the mode selection switch, the relay that stops in emergency, the disconnected enable of the UWPS master
Circuit, first output relay, main convertor control circuit, second normally opened contact and the master it is disconnected enable after
Electrical equipment is sequentially connected in series；
One end of first normally opened contact is connected with the first end of the pressure-relief valve for transformer, the other end with it is described
First normally-closed contact is connected with the connecting line of the mode selection switch；
One end of second normally-closed contact controls the connection of circuit and second normally opened contact with the main convertor
Line is connected, and the other end is connected with the first end of the pressure-relief valve for transformer；
Second end of the pressure-relief valve for transformer is connected with the pantograph isolating valve.
It is preferred that, the control circuit also includes：
For the first detection circuit of the current operation mode for detecting the mode selection switch；
For the second detection circuit of the current state for detecting the pantograph isolating valve；
Current switch states three testing circuit for detecting the pressure-relief valve for transformer；
The 4th detection circuit for detecting the disconnected current state information for enabling circuit of the UWPS master；
The 5th detection circuit for obtaining electricity condition for detecting the relay that stops in emergency.
It is preferred that, the control circuit also includes：
Cue circuit, is off for that ought detect the pantograph isolating valve, and/or the transformer pressure
Relief valve is off, and/or the mode selection switch is in powering mode in storehouse, and/or the UWPS master is disconnected makes
When the difference current that energy circuit is obtained is more than setting value, prompt message is exported.
It is preferred that, the cue circuit is specially indicator lamp, buzzer or voice module.
It is preferred that, the main convertor control circuit includes：Main convertor traction control unit, the second output relay and
3rd output relay, wherein：
The output end of second output relay is connected with the input of the 3rd output relay, and described second is defeated
The input for going out relay is connected with the input of the main convertor traction control unit, the main convertor traction control list
The output end of member is connected with the output end of the 3rd output relay；
When it is determined that during the main convertor traction control cell failure, controlling the main convertor traction control unit to be in
Off-state, and second output relay and the 3rd output relay are in closure state.
It is preferred that, the disconnected circuit that enables of the UWPS master includes：First UWPS output modules, the 2nd UWPS output modules and
Principal and subordinate's VCU relay normally-closed contacts, wherein：
The output end of the first UWPS output modules is connected with the input of the 2nd UWPS output modules, and described
The input of one UWPS output modules is connected with the input of the principal and subordinate VCU relay normally-closed contacts, the principal and subordinate VCU relays
The output end of device normally-closed contact is connected with the output end of the 2nd UWPS output modules；
When the difference current for judging high voltage side of transformer is more than setting value, control the first UWPS output modules and
The 2nd UWPS output modules are off；
When receive disconnect main disconnected order when, disconnect the principal and subordinate VCU relay normally-closed contacts.
A kind of control method of vacuum circuit breaker, applied to the control circuit of vacuum circuit breaker as described above, the control
Method processed includes：
Detect the current operating state of each device in the control circuit of the vacuum circuit breaker；
Judge whether the current operating state of each device is satisfied by one-to-one preset requirement；
If so, the vacuum circuit breaker closure where control in the current railway carriage of train；
If it is not, the vacuum circuit breaker where control in the current railway carriage of train disconnects.
It is preferred that, the current operating state of each device includes in the control circuit of the detection vacuum circuit breaker：
Detect the current state of the pantograph isolating valve in the control circuit of the vacuum circuit breaker, the transformer pressure
The current switch states of relief valve, the current operation mode of the mode selection switch, the UWPS master is disconnected to enable working as circuit
Preceding state.
It is preferred that, the current operating state of each device is satisfied by one-to-one preset requirement and is specially：
The pantograph isolating valve is in closure, and the pressure-relief valve for transformer is in normally off, and the mould
Formula selecting switch is in normal mode, and the disconnected difference current for enabling circuit acquisition of the UWPS master is not more than setting value.
It is preferred that, the control method also includes：
When the judged result is no, corresponding warning message is exported.
As can be seen here, compared with prior art, this application provides a kind of vacuum circuit breaker control circuit and method, power supply
Through the miniature circuit breaker in sub-cell controlling brancher, the first normally-closed contact of pantograph selective relay, mode selection switch, tight
Anxious plugging relay, UWPS (Uninterruptible Power System/Uninterruptible Power Supply,
Uninterrupted power source) main disconnected enable circuit, the first output relay, main convertor control circuit, the of pantograph selective relay
After two normally-closed contacts, pressure-relief valve for transformer and pantograph isolating valve, the pantograph isolating valve with this unit controlling brancher
It is connected, and this unit controlling brancher includes pantograph isolating valve, pressure-relief valve for transformer, the pantograph selection being sequentially connected
First normally opened contact of relay, mode selection switch, the relay that stops in emergency, UWPS master be disconnected enable circuit, the first output after
Electrical equipment, main convertor control circuit, the second normally opened contact of pantograph selective relay and enable relay.Based on control electricity
Road, in actual applications, when train in case of emergency, make it is above-mentioned stop in emergency relay electric-loss disconnection so that this
The above-mentioned control loop open circuit provided is invented, then the enable relay electric-loss in this unit controlling brancher, makes its corresponding vacuum
Breaker is disconnected, and high voltage power supply is disconnected, it is to avoid the damage to train apparatus and the threat to personal safety, it is ensured that row
The security reliability of car operation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
A kind of electrical block diagram of the control circuit embodiments for vacuum circuit breaker that Fig. 1 provides for the present invention；
The electrical block diagram of the control circuit embodiments for another vacuum circuit breaker that Fig. 2 provides for the present invention；
A kind of schematic flow sheet of the control method embodiment for vacuum circuit breaker that Fig. 3 provides for the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
This application provides a kind of vacuum circuit breaker control circuit and method, power supply is through miniature in sub-cell controlling brancher
Breaker, the first normally-closed contact of pantograph selective relay, mode selection switch, the relay that stops in emergency, UWPS
(Uninterruptible Power System/Uninterruptible Power Supply, uninterrupted power source) main break makes
Can circuit, the first output relay, main convertor control circuit, the second normally-closed contact, the transformer of pantograph selective relay
After pressure relief valve and pantograph isolating valve, it is connected with the pantograph isolating valve of this unit controlling brancher, and this unit control
Branch road processed includes the first normally opened of the pantograph isolating valve, pressure-relief valve for transformer, pantograph selective relay being sequentially connected
Contact, mode selection switch, the relay that stops in emergency, disconnected circuit, the first output relay, the main convertor of enabling of UWPS master are controlled
Circuit, the second normally opened contact of pantograph selective relay and enable relay.Based on the control circuit, in actual applications,
When train in case of emergency, make above-mentioned relay electric-loss disconnection of stopping in emergency, so that the above-mentioned control that provides of the present invention
Loop open circuit processed, then the enable relay electric-loss in this unit controlling brancher, disconnects its corresponding vacuum circuit breaker, by high pressure
Power supply disconnects, it is to avoid the damage to train apparatus and the threat to personal safety, it is ensured that train operation it is safe and reliable
Property.
A kind of electrical block diagram of the control circuit embodiments of vacuum circuit breaker of the invention shown in reference picture 1, this
The control circuit that embodiment is provided can specifically include：This unit controlling brancher 100 and sub-cell controlling brancher 200, due to this
The particular circuit configurations of unit controlling brancher 100 and sub-cell controlling brancher 200 are essentially identical, and the present embodiment is only with sub-cell control
It is described in detail exemplified by branch road 200 processed：
The sub-cell controlling brancher 200 includes：First normally-closed contact KM21 of pantograph selective relay and first is normally opened
Contact KM22, mode selection switch 201, the relay 202 that stops in emergency, the disconnected enable circuit 203 of UWPS master, the first output relay
204, main convertor control circuit 205, the second normally-closed contact KM23 and the second normally opened contact of the pantograph selective relay
KM24, pressure-relief valve for transformer 206, pantograph isolating valve 207 and main disconnected enable relay 208.Certainly, it is necessary to explanation
It is that in addition to these devices, the sub-cell controlling brancher 200 can also include the device in existing control loop, such as miniature
Breaker, pantograph selective relay etc., the present invention are no longer described in detail one by one herein, are paid so long as not those skilled in the art
What creative work was determined, belong to the scope of the present invention.
Wherein, in actual applications, as shown in figure 1, above-mentioned first normally-closed contact KM21, the mode selection switch 201,
The relay 202 that stops in emergency, the disconnected enable circuit 203 of the UWPS master, first output relay 204, the main transformer
Stream device control circuit 205, the second normally opened contact KM24 and the disconnected relay 208 that enables of the master are sequentially connected in series.
Moreover, one end of the first normally opened contact KM22 is connected with the first end of the pressure-relief valve for transformer 206,
The other end is connected with the first normally-closed contact KM21 and the mode selection switch 201 connecting line.
One end of the second normally-closed contact KM23 controls circuit 205 and second normally opened contact with the main convertor
KM24 connecting line is connected, and the other end is connected with the first end of the pressure-relief valve for transformer 206；The transformer pressure is released
The second end for putting valve 206 is connected with the pantograph isolating valve 207.
Based on above-mentioned analysis, in the present embodiment practical application, reference picture 2, if controlling brancher is this unit on the right side of the figure
Controlling brancher 100, left side are sub-cell controlling brancher 200, then, if the now corresponding pantograph liter of this unit controlling brancher
Rise, i.e. this unit pantograph selective relay KM1 obtains electric, as indicated by the arrows of fig. 2, and the control circuit of the vacuum circuit breaker is in reality
Following control loop can be formed in the application of border：
DC110V power supplys through sub-cell miniature circuit breaker (being not drawn into figure) → sub-cell pantograph selective relay
One normally-closed contact KM21 → sub-cell 201 → sub-cell of mode selection switch stops in emergency relay 202 → sub-cell UWPS master
Disconnected circuit 203 → sub-cell, 204 → sub-cell of the first output relay main convertor that enables controls 205 → sub-cell of circuit by electricity
Bend the second normally-closed contact of selective relay KM23 → sub-cell main transformer pressure relief valve 206 → sub-cell pantograph isolating valve
207 → this unit pantograph isolating valve 107 → this unit main transformer 106 → this unit of pressure relief valve pantograph selects relay
The first normally opened contact of device KM12 → this cell library internal schema switchs 101 → this unit and stopped in emergency 102 → this unit of relay
UWPS master is disconnected to enable circuit the first output relay of 103 → this unit 104->This unit main convertor controls circuit 105 → sheet
Unit pantograph the second normally opened contact of selective relay KM14 → this unit master is disconnected to enable relay 108.
Similarly, if sub-cell pantograph selective relay KM2 obtains electric, the control circuit of the vacuum circuit breaker will form following
Control loop：
DC110V power supplys (are not drawn into) the of → this unit pantograph selective relay through this unit miniature circuit breaker in figure
One normally-closed contact KM11 → this unit mode 101 → this unit of selecting switch stops in emergency relay 102 → this unit UWPS master
Disconnected circuit 103 → this unit, 104 → this unit of the first output relay main convertor that enables controls 105 → this unit of circuit by electricity
Bend the second normally-closed contact of selective relay KM13 → this unit main transformer pressure relief valve 106 → this unit pantograph isolating valve
107 → sub-cell pantograph isolating valve 207 → sub-cell main transformer 206 → sub-cell of pressure relief valve pantograph selects relay
The first normally opened contact of device KM22 → sub-cell storehouse internal schema switchs 201 → sub-cell and stopped in emergency 202 → sub-cell of relay
UWPS master is disconnected to enable circuit the first output relay of 203 → sub-cell 204->Sub-cell main convertor control circuit 205 → secondary
Unit pantograph the second normally opened contact of selective relay KM24 → sub-cell master is disconnected to enable relay 208.
As can be seen here, in the present embodiment practical application, once detect any one in formed control loop
Device is abnormal, and its correspondence link will be switched off, so that corresponding vacuum circuit breaker disconnects, it is disconnected with high voltage power supply, protects
Demonstrate,prove the important electric component safety of EMUs and the life security of personnel.
, wherein it is desired to explanation, in the practical application of the present embodiment, because the mode of operation that selection mode is switched can
Including normal mode and Ku Nei powering modes, when it is in normal mode, it is allowed to close vacuum circuit breaker；And when it is in storehouse
During interior powering mode, it would not allow for closing vacuum circuit breaker.
Also, when pantograph isolating valve is off, the pantograph of this section railway carriage would not allow for rising, while this
The vacuum circuit breaker of section railway carriage also would not allow for closure.
Further, when pressure-relief valve for transformer repeat circuit contact is off, it also would not allow for corresponding vacuum
Breaker closing；Moreover, in actual applications, when running into emergency and brake hard, the relay that stops in emergency by dead electricity,
So that its auxiliary contact disconnects, and then disconnects corresponding vacuum circuit breaker, realize and promptly isolated with high voltage power supply, protected
The security reliability of train operation is demonstrate,proved.
In addition, in the normal course of operation of train, when EMUs are in train state of activation, if this unit pantograph
Rise, sub-cell pantograph will be fallen, thus, if this unit vacuum circuit breaker allows closure, then sub-cell vacuum circuit breaker
It would not allow for closure.That is, a train only allows a train control unit to play control action, make its corresponding vacuum
Open circuit closure.
Understood based on above-mentioned analysis, when detecting, pantograph isolating valve is off, mode selection switch is in storehouse
Interior powering mode, pressure-relief valve for transformer are off, the relay electric-loss that stops in emergency, the disconnected circuit that enables of UWPS master are obtained
The difference current obtained is more than setting value, and VCU (Vchicle control unit, train control unit) is not received and enables order
When any one in the case of this six kinds occurs, its corresponding vacuum circuit breaker does not allow closure, that is to say, that real in train
In the application of border, once there is any one or more in above-mentioned six kinds of situations, the control loop of the vacuum circuit breaker of the train
All by open circuit, so as to disconnect high voltage power supply rapidly, to ensure the life security of the important electric component safety of train and personnel, subtract
Few property loss and casualties.
It can be seen that, on the basis of the above embodiment of the present invention, the control circuit of the vacuum circuit breaker can also include being used for
The detection circuit of above-mentioned various situations is detected, specifically, can include：Work at present for detecting the mode selection switch
First detection circuit of pattern；For the second detection circuit of the current state for detecting the pantograph isolating valve；For detecting
The current switch states three testing circuit of the pressure-relief valve for transformer；For detecting the disconnected enable circuit of the UWPS master
4th detection circuit of current state information；The 5th detection electricity for obtaining electricity condition for detecting the relay that stops in emergency
Road.
Wherein, the disconnected current state information for enabling circuit of UWPS master can include high voltage side of transformer input current and output
The difference (i.e. difference current) of electric current, and the difference current and setting value (setting value can be VCU values set in advance)
Comparative result etc.,
It should be noted that because the concrete structure of above-mentioned detection circuit belongs to general knowledge known in this field, technical staff can
Need to select suitable detection device according to actually detected, the present invention is not especially limited this, so long as not art technology
Personnel pay creative work determination, belong to the scope of the present invention.
Optionally, the control circuit for the vacuum circuit breaker that the present invention is provided can also include cue circuit, when detecting
Pantograph isolating valve is stated to be off, and/or the pressure-relief valve for transformer is off, and/or the mould
Formula selecting switch is in powering mode in storehouse, and/or the disconnected difference current for enabling circuit acquisition of the UWPS master is more than setting value
When, for exporting prompt message, to remind staff to handle in time.
Wherein, the cue circuit is specifically as follows indicator lamp, buzzer or voice module etc., and the present invention does not make to have to this
Body is limited.
Optionally, as shown in figure 1, controlling circuit 205 for the main convertor in present invention control circuit, it specifically can be with
Including：Main convertor traction control unit 205-1, the second output relay 205-2 and the 3rd output relay 205-3, wherein：
The output end of the second output relay 205-2 is connected with the input of the 3rd output relay 205-3,
The input of the second output relay 205-2 is connected with the input of the main convertor traction control unit 205-1, institute
The output end for stating main convertor traction control unit 205-1 is connected with the output end of the 3rd output relay 205-3.
In the present embodiment, in main convertor traction control unit (Traction controll unit, TCU) 205-1
Portion comes with state instruction relay, before main convertor startup, it will usually self-inspection is first carried out, when it is determined that the main convertor
Each part and its during normal function in TCU, will control TCU state instructions relay closure, reference picture 1 now, will control main transformer
Flow device traction control unit and be in closure state, and second output relay and the 3rd output relay are in breaking
Open state.
If conversely, when detecting main convertor TCU failures, TCU state instruction relays will be kept to be off,
Now, VCU can isolate corresponding TCU manually according to TCU failure situation in display interfaces, reference picture 1, and now, second is defeated
Closure state will be all in by going out relay 205-2 and the 3rd output relay 205-3 auxiliary contact, and main convertor traction is controlled
The contact of unit 205-1 repeat circuits processed will be off, so that train is unlikely to draw because of single TCU failures
Whole train traction is played without output, is gone back normally while ensureing that VCU is enabled.Wherein, in the present embodiment, the failure feelings of each current transformer
Condition directly can be shown over the display, such as be determined after certain current transformer failure, can be alarmed by corresponding instruction device,
Now, driver can directly carry out isolated operation in the operation interface according to display, such as click on the main convertor for needing to isolate, from
And trigger corresponding default isolation program and isolate the main convertor, it is simple, convenient and quick.
In summary, need to judge that it controls whether each part in circuit is in normal shape before closure vacuum circuit breaker
State, so that it is guaranteed that each part is safe and reliable；And whether judgment model selecting switch is in powering mode in storehouse, it is ensured that Ren Yuansheng
Life safety；Moreover, in train travelling process, if driver takes brake hard, the control circuit of vacuum circuit breaker by open circuit, from
And high voltage power supply is disconnected rapidly, it is ensured that the security reliability of train operation；In addition, the present invention can also isolate dependent failure unsteady flow
Device, realizes traction redundancy feature, it is ensured that train reliability service.
Optionally, in the present embodiment practical application, reference picture 1, the disconnected circuit 203 that enables of the UWPS master can include：The
One UWPS output modules 203-1, the 2nd UWPS output modules 203-2 and principal and subordinate VCU relay normally-closed contact 203-3, wherein：
The output end of the first UWPS output modules 203-1 and the input of the 2nd UWPS output modules 203-2
It is connected, the input of the input of the first UWPS output modules 203-1 and the principal and subordinate VCU relay normally-closed contacts 203-3
End is connected, and the output end of the principal and subordinate VCU relay normally-closed contacts 203-3 is defeated with the 2nd UWPS output modules 203-2's
Go out end to be connected；
When the difference current for judging high voltage side of transformer is more than setting value, the first UWPS output modules are controlled
203-1 and the 2nd UWPS output modules 203-2 are off；
When receive disconnect main disconnected order when, disconnect the principal and subordinate VCU relay normally-closed contacts 203-3.
In the present embodiment, this unit controlling brancher 100 and sub-cell controlling brancher 200 include VCU relays, when
The pantograph of which unit rises, and the VCU of the unit just plays control action, then the VCU of the unit is main VCU, its corresponding VCU
Relay obtains electric, then principal and subordinate's VCU relay normally-closed contacts 203-1 in the controlling brancher of the unit disconnects, and the first UWPS
Relay normally open contact in output module 203-1 and the 2nd UWPS output modules 203-2 is closed；And the control of another unit
VCU in branch road is that, from VCU, being somebody's turn to do must not electricity, its corresponding principal and subordinate VCU relay normally-closed contacts 203-1 holding from VCU relays
Closure state, the enabling unit so that the UWPS master that the first UWPS output modules 203-1 and the 2nd UWPS output modules are formed is broken
Short circuit.
Wherein, UWPS is the uninterrupted power source that VCU is carried, and it is not only a power supply, and is made defeated with logic input
Go out the enable element of control function and current sense function, in actual applications, it can utilize the measure voltage ＆ current of itself
Function, the input of detection high voltage side of transformer and output current difference, and the difference is compared with the setting value inside VCU,
To control principal and subordinate's VCU relays normally-closed contact to perform corresponding actions according to comparative result.
It follows that having relay module inside the UMPS, the control instruction that can be sent according to the VCU makes its auxiliary
Contact (i.e. principal and subordinate VCU relays normally-closed contact 203-1) is helped to close or disconnect, to be used as control output action.The UWPS master is broken
The first UWPS output modules 203-1 and the 2nd UWPS output modules 203-2 in circuit 203 is enabled also all to be controlled by the VCU, by
In in actual applications, the two output modules are simultaneously not involved in specific logic judgment, only carry out VCU order, thus, in order to
Description is facilitated to refer to VCU with the two output modules.
In summary, in the alternative embodiment, when the difference current for detecting high voltage side of transformer is more than setting value,
Disconnected the first UWPS output modules 203-1 and the 2nd UWPS output modules 203-2 enabled in circuit 203 of UWPS master is in disconnecting
State, so that the disconnected control circuit for enabling the dead electricity of relay 208, then sealing in control vacuum circuit breaker closing coil of this unit master
In the disconnected normally opened contact for enabling relay 208 of the master disconnect so that the vacuum circuit breaker disconnects, reach and rapid disconnect high pressure
Power supply, it is ensured that the purpose of the security reliability of train operation.
A kind of schematic flow sheet of the control method embodiment of vacuum circuit breaker of the invention shown in reference picture 3, this method
Specifically it may comprise steps of：
Step S31：Detect the current operating state of each device in the control circuit of vacuum circuit breaker.
In the present embodiment, with reference to above-mentioned analysis, step S31 is specifically as follows：Detect the control of the vacuum circuit breaker
The current state of pantograph isolating valve in circuit processed, the current switch states of pressure-relief valve for transformer, mode selection switch
Current operation mode, (the high voltage side of transformer difference current as obtained is for current state information that UWPS master is disconnected to enable circuit
It is no to be more than setting value).
Step S32：Judge whether the current operating state of each device in the control circuit of the vacuum circuit breaker is satisfied by one
One corresponding preset requirement, if so, then entering step S33；If it is not, then performing step S34.
Wherein, the preset requirement can include：The pantograph isolating valve is in closure state, and the transformer pressure
Relief valve is in normally off, and the mode selection switch is in normal mode, and the disconnected circuit that enables of the UWPS master is obtained
Difference current be not more than setting value, and controlled by corresponding VCU, only one pantograph rises the then train and only has a vacuum
Breaker closing.
Step S33：Vacuum circuit breaker closure where control in the current railway carriage of train.
Step S34：Vacuum circuit breaker where control in the current railway carriage of train disconnects.
Optionally, when above-mentioned judged result is no, corresponding warning message can also be exported, specifically can be according to the judgement
As a result particular content determines the content of warning message, and the present invention is not especially limited to this.Moreover, the warning message can be with
The modes such as indicator lamp flicker, buzzer or voice broadcast are exported, but are not limited thereto, as long as prompting staff can be played
Effect.
Understood based on above-mentioned analysis, in embodiments of the present invention, by each in the above-mentioned control circuit of the invention provided
Device working condition is detected in real time, once it is determined that the working condition of any one or more devices therein is unsatisfactory for presetting
It is required that or during failure, the control circuit link corresponding to the device will be switched off, that is, cause the control circuit breaker, disconnect correspondence true
Empty breaker, so as to promptly isolate high voltage power supply, it is ensured that train safe and reliable operation.
It should be noted that on that in the various embodiments described above, can also include being used in addition to the above-mentioned each device provided
The connection member of each device, display etc. are connected, the present invention will not enumerate herein, so long as not those skilled in the art
Creative work determination is paid, the scope of the present invention is belonged to, in addition, such as first, second or the like relational terms
It is used merely to make a distinction an operation or unit with another operation or unit, and not necessarily requires or imply these lists
There is any this actual relation or order between member or operation.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For method disclosed in embodiment
For, because it is corresponding with circuit disclosed in embodiment, so description is fairly simple, related part illustrates referring to circuit part
.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (7)
1. the control circuit of a kind of vacuum circuit breaker, it is characterised in that the control circuit includes：This unit controlling brancher and time
Unit controlling brancher, described unit controlling brancher and sub-cell controlling brancher include：The first of pantograph selective relay
Normally-closed contact and the first normally opened contact, mode selection switch, the relay that stops in emergency, the disconnected enable circuit of UWPS master, the first output
Relay, main convertor control circuit, the second normally-closed contact of pantograph selective relay and the second normally opened contact, transformer pressure
Power relief valve, pantograph isolating valve, main disconnected enable relay and cue circuit, wherein,
First normally-closed contact, the mode selection switch, the relay that stops in emergency, the disconnected enable electricity of the UWPS master
Road, first output relay, the main convertor control circuit, second normally opened contact and the disconnected enable relay of the master
Device is sequentially connected in series；
One end of first normally opened contact is connected with the first end of the pressure-relief valve for transformer, the other end and described first
Normally-closed contact is connected with the connecting line of the mode selection switch；
One end of second normally-closed contact controls the connecting line phase of circuit and second normally opened contact with the main convertor
Even, the other end is connected with the first end of the pressure-relief valve for transformer；
Second end of the pressure-relief valve for transformer is connected with the pantograph isolating valve；
For the first detection circuit of the current operation mode for detecting the mode selection switch；
For the second detection circuit of the current state for detecting the pantograph isolating valve；
Current switch states three testing circuit for detecting the pressure-relief valve for transformer；
The 4th detection circuit for detecting the disconnected current state information for enabling circuit of the UWPS master；
The 5th detection circuit for obtaining electricity condition for detecting the relay that stops in emergency
Cue circuit, is off for that ought detect the pantograph isolating valve, and/or transformer pressure release
Valve is off, and/or the mode selection switch is in powering mode in storehouse, and/or the disconnected enable electricity of the UWPS master
When the difference current that road is obtained is more than setting value, prompt message is exported.
2. control circuit according to claim 1, it is characterised in that the cue circuit is specially indicator lamp, buzzer
Or voice module.
3. the control circuit according to claim any one of 1-2, it is characterised in that the main convertor controls circuit bag
Include：Main convertor traction control unit, the second output relay and the 3rd output relay, wherein：
The output end of second output relay is connected with the input of the 3rd output relay, it is described second output after
The input of electrical equipment is connected with the input of the main convertor traction control unit, the main convertor traction control unit
Output end is connected with the output end of the 3rd output relay；
When it is determined that during the main convertor traction control cell failure, controlling the main convertor traction control unit to be in and disconnecting
State, and second output relay and the 3rd output relay are in closure state.
4. the control circuit according to claim any one of 1-2, it is characterised in that the UWPS master is disconnected to enable circuit bag
Include：First UWPS output modules, the 2nd UWPS output modules and principal and subordinate's VCU relay normally-closed contacts, wherein：
The output end of the first UWPS output modules is connected with the input of the 2nd UWPS output modules, and described first
The input of UWPS output modules is connected with the input of the principal and subordinate VCU relay normally-closed contacts, the principal and subordinate VCU relays
The output end of normally-closed contact is connected with the output end of the 2nd UWPS output modules；
When the difference current for judging high voltage side of transformer is more than setting value, the first UWPS output modules are controlled and described
2nd UWPS output modules are off；
When receive disconnect main disconnected order when, disconnect the principal and subordinate VCU relay normally-closed contacts.
5. a kind of control method of vacuum circuit breaker, it is characterised in that applied to the vacuum as described in claim any one of 1-4
The control circuit of breaker, the control method includes：
Detect the current operating state of each device in the control circuit of the vacuum circuit breaker；
Judge whether the current operating state of each device is satisfied by one-to-one preset requirement；
If so, the vacuum circuit breaker closure where control in the current railway carriage of train；
If it is not, the vacuum circuit breaker where control in the current railway carriage of train disconnects, and export corresponding warning message.
6. control method according to claim 5, it is characterised in that the control circuit of the detection vacuum circuit breaker
The current operating state of interior each device includes：
Detect the current state of the pantograph isolating valve in the control circuit of the vacuum circuit breaker, the transformer pressure release
The current switch states of valve, the current operation mode of the mode selection switch, the disconnected current shape for enabling circuit of the UWPS master
State.
7. control method according to claim 6, it is characterised in that the current operating state of each device is satisfied by one
One corresponding preset requirement is specially：
The pantograph isolating valve is in closure, and the pressure-relief valve for transformer is in normally off, and the pattern is selected
Select switch and be in normal mode, and the disconnected difference current for enabling circuit acquisition of the UWPS master is not more than setting value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510170877.XA CN104749983B (en) | 2015-04-13 | 2015-04-13 | A kind of vacuum circuit breaker control circuit and method |
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| CN201510170877.XA CN104749983B (en) | 2015-04-13 | 2015-04-13 | A kind of vacuum circuit breaker control circuit and method |
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| CN104749983B true CN104749983B (en) | 2017-08-18 |
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| CN110189572A (en) * | 2019-05-31 | 2019-08-30 | 广州市轻工高级技工学校 | The urgent parking brake of train and bogie monitor control circuit wiring actual training device |
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| CN104749983A (en) | 2015-07-01 |
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