CN107896101A - A kind of composite switch based on coupling negative pressure circuit - Google Patents
A kind of composite switch based on coupling negative pressure circuit Download PDFInfo
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- CN107896101A CN107896101A CN201711007339.4A CN201711007339A CN107896101A CN 107896101 A CN107896101 A CN 107896101A CN 201711007339 A CN201711007339 A CN 201711007339A CN 107896101 A CN107896101 A CN 107896101A
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- Prior art keywords
- switch
- branch road
- circuit
- state
- negative pressure
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K2017/515—Mechanical switches; Electronic switches controlling mechanical switches, e.g. relais
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Keying Circuit Devices (AREA)
Abstract
The present invention proposes a kind of composite switch circuit based on coupling negative pressure circuit, switching switch, switching device, wherein the composite switch circuit includes, mechanical switch branch road, change of current branch road, auxiliary solid-state switch branch road and energy absorption branch road；The change of current branch road includes main solid-state switch branch road and the coupling negative pressure circuit connected with the main solid-state switch branch road.The composite switch circuit based on coupling negative pressure circuit, switching switch, the switching device of the present invention has the characteristics of reliability simple for structure is high, and easy to control.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of composite switch electricity based on coupling negative pressure circuit
Road, converting switch device and control method.
Background technology
Currently there is a kind of automatic charging type to force zero passage high voltage DC breaker (referring to patent CN105186443A), it is this
Breaker has used high-speed switch unit, energy-absorbing unit, mutual reactor unit, commutation capacitor unit and major loop disconnecting switch
Unit.Automatic charging type as shown in Figure 1 forces the physical circuit figure of zero passage high voltage DC breaker, the first disconnecting switch K1 with
High-speed switch CB, primary side winding L1, the second disconnecting switch K2 are sequentially connected in series, and energy-absorbing unit MOV is in parallel with high-speed switch CB, charging
Switch K3 and commutation capacitor C, vice-side winding L2 are sequentially connected in series, and one end is connected with high-speed switch CB inputs, the other end and soon
Speed switch CB output end connections.
This automatic charging type forces zero passage high voltage DC breaker, and precharge device small volume, the triggering of change of current branch road are opened
Pass rate request is low, control is simple, can cut-off the fault current of either direction.It is but complicated, reliable there is circuit structure
Property it is low, and be unfavorable for opening a sluice gate/shutting-brake control, switch is slower.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provide it is a kind of based on coupling negative pressure circuit composite switch circuit,
Switching switch, switching device.
The invention provides a kind of composite switch circuit based on coupling negative pressure circuit, it is characterised in that
The composite switch circuit includes, mechanical switch branch road, change of current branch road, auxiliary solid-state switch branch road and energy absorption
Branch road；Wherein,
The change of current branch road includes main solid-state switch branch road and the coupling negative pressure connected with main solid-state switch branch road electricity
Road.
Further, the mechanical switch branch road, auxiliary solid-state switch branch road, energy absorption branch road and the change of current branch road be simultaneously
Connection connection.
Further, the negative pressure circuit includes coupling coil, IGCT and discharge capacity.
Further, the winding of coupling coil first of the coupling negative pressure circuit is located at the main solid-state switch branch road；Institute
The second winding for stating coupling coil is located at the discharge capacity circuit, and the IGCT, discharge capacity with described second around
Group forms loop.
Further, the electric capacity is powered by DC power supply circuit.
Further, the mechanical switch branch road includes mechanical switch；And/or
The main solid-state switching circuits include a solid-state switch or the solid-state switch of multiple series connection；And/or
The auxiliary solid-state switch branch road includes a solid-state switch or the solid-state switch of multiple series connection；And/or
The energy absorption branch road includes arrester.
Present invention also offers a kind of on-off circuit control method, applied to as above any described based on coupling negative pressure electricity
The composite switch circuit on road, it is characterised in that
Main solid-state switching circuits are controlled to turn on, control machinery branch road disconnects；
Control negative pressure circuit turn-on；
Main solid-state switching circuits are controlled to disconnect.
Further, the contact of the mechanical switch in the mechanical switch branch road, which reaches, effectively opens away from rear, control negative pressure
Circuit turn-on.
Further, by controlling the turn on thyristors in the negative pressure circuit to turn on negative pressure circuit.
Further, the contact gap of the mechanical switch in the mechanical switch branch road can bear transient recovery voltage
When, the control main solid-state switching circuits disconnect.
Present invention also offers a kind of on-off circuit control method, applied to as above any described based on coupling negative pressure electricity
The composite switch circuit on road, it is characterised in that
Control the auxiliary solid-state switch branch road conducting；
The mechanical switch branch road is controlled to turn on, the control auxiliary solid-state switch branch road disconnects.
Present invention also offers a kind of automatic transfer switch device, it is characterised in that the automatic transfer switch device bag
Main switching switch block and standby switching switch block are included, wherein,
The main switching switch block includes three as above any described composite switch based on coupling negative pressure circuit
Circuit, it is respectively used in the A phase, B phase, C phase branch road of three-phase electricity；
The standby switching switch block includes three as above any described composite switch based on coupling negative pressure circuit
Circuit, it is respectively used in the A phase, B phase, C phase branch road of three-phase electricity.
Present invention also offers a kind of power supply switch protecting system, it is characterised in that
The power protection switching system includes：
Working power and stand-by power supply；
Automatic transfer switch device as described above, main switching switch block and work in the automatic transfer switch device
Make power supply connection, standby switching switch block is connected with stand-by power supply；
Monitoring system, the working condition for monitoring power supply and/or stand-by power supply；
Control protection system, the automatic transfer switch is controlled to fill according to as above any described on-off circuit control method
Middle main switching switch block and/or standby switching switch block separating brake are put, and/or according to on-off circuit control method as described above
Main switching switch block and/or standby switching switch block in the automatic transfer switch device is controlled to close a floodgate.
Further, the monitoring system is additionally operable to the information of the working condition being sent to the control protection system
System, the Control protection system according to described information control the automatic transfer switch device in the main switching switch block and
Switch between standby switching switch block.
Further, the monitoring system also detects the switch closing and switch opening state of the automatic transfer switch, and by described in
The feedback of the information of state gives the Control protection system.
The composite switch circuit based on coupling negative pressure circuit, switching switch, the switching device of the present invention, has low damage
The characteristics of consuming, be easy to control, being switched fast, and simple for structure, dependable performance.
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 required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 shows that automatic charging type forces zero passage high voltage DC breaker structural representation in the prior art；
Fig. 2 shows the composite switch electrical block diagram based on coupling negative pressure circuit of the embodiment of the present invention；
Fig. 3 shows the hybrid automatic transfer switch device knot according to embodiments of the present invention based on coupling negative pressure circuit
Structure schematic diagram；
Fig. 4 shows dual power supply redundancy electric power system structural representation according to embodiments of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely illustrated, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The switching switch of the present invention employs the composite switch circuit based on coupling negative pressure circuit.The embodiment of the present invention with
It is illustrative exemplified by switching on-off circuit, but it should be recognized by those skilled in the art that in the base without departing from the present invention
In the case of present inventive concept, switching switch, all on-off circuits that can realize connecting and disconnecting of the circuit such as breaker, element, part,
The present invention is can be achieved in equipment, system etc., and these are belonged in protection scope of the present invention.
As shown in Fig. 2 the on-off circuit includes mechanical switch branch road, change of current branch road, auxiliary solid-state switch branch road and energy
Absorb branch road.Wherein, the switching branches include mechanical switch；Auxiliary solid-state switch branch road includes the solid-state of one or more series connection
Switch；The change of current branch road includes main solid-state switch branch road and the coupling negative pressure circuit connected with the main solid-state switch branch road,
The main solid-state switch branch road includes the main solid-state switch of one or more series connection, one end of main solid-state switch branch road and coupling line
Ls winding connection is enclosed, another winding of the transformer Ls is in the discharge capacity circuit, so as to transformer Ls
Two windings cause change of current branch road with couple negative pressure circuit coupling；The coupling negative pressure circuit includes IGCT S, discharge capacity
Cs and coupling coil Ls, the IGCT S, discharge capacity Cs and the coupling coil Ls the second winding form loop.Meanwhile
In order to be charged to the discharge capacity Cs, DC power supply circuit also is set for the electric capacity Cs.The DC power supply circuit includes
Resistance Rs, telegraph key K, dc source DC, wherein one end of the resistance is connected with one end of the electric capacity Cs, the resistance it is another
One end is connected with the telegraph key K, and the telegraph key K is connected with one end of the dc source, the other end of the dc source with
The other end connection of the electric capacity Cs.The energy absorption branch road mainly includes arrester, and MOV (metals are employed in embodiment
Oxide voltage-sensitive resistance) Zinc-Oxide Arrester, absorption system of taking shelter from the thunder absorbs produced in the moving process of the mechanical switch
Dump energy, and then realize to the overvoltage protection of mechanical switch.The present invention is using MOV Zinc-Oxide Arresters as exemplary
Lightning-arrest absorption system, it is not limited to using MOV Zinc-Oxide Arresters as lightning-arrest absorption system, it is all to absorb in branch road
The energy absorption circuit or system of dump energy are used equally for the present invention.The main solid-state switch branch road, the auxiliary solid-state switch
Branch road, the mechanical switch branch road connect with the energy absorption branch circuit parallel connection.Main solid-state switch, auxiliary solid-state switch institute in Fig. 2
Branch road represent with a solid-state switch or can there is the solid-state switches of multiple series connection to break, it is not intended that solid-state switch
The branch road at place electrically disconnects.
The on-off circuit is when normal operation is to establish the connection between power supply and load, in the mechanical switch branch road
Mechanical switch closure, the main solid-state switch in the main solid-state switch branch road disconnects, the auxiliary solid-state switch branch
The auxiliary solid-state switch in road disconnects, and electric current flows through the mechanical switch under this state.
The separating brake control process of the composite switch circuit based on coupling negative pressure circuit described in embodiment is as follows：Control institute
The main solid-state switch conducting in main solid-state switch branch road is stated, and is sent to mechanical switch described in the mechanical switch branch road
Separating brake order indicates the mechanical switch separating brake.When the clearance between open contacts of the mechanical switch reach 2-3 millimeters (mm), it is believed that institute
State mechanical switch and reached and effectively open away from now controlling the IGCT S in the negative pressure circuit to turn on.Now, the electricity
The winding for holding Cs and the transformer forms vibration, and forms a negative pressure in the change of current branch road by the winding, makes to change
Stream branch road entirety conduction voltage drop is less than the mechanical switch arc voltage, so as to which impressed current is transferred to institute by the mechanical switch branch road
Change of current branch road is stated, now the mechanical switch branch current zero passage blow-out, complete electric current transfer.Transported in the mechanical switch separating brake
When corresponding transient recovery voltage can be born by moving its contact gap, the control main solid-state switch disconnects, and now circuit produces
Raw energy is absorbed by the MOV Zinc-Oxide Arresters in the energy absorption branch road, and main switching switching current drops to zero, separating brake
Process is completed.
The separating brake control process of the composite switch circuit based on coupling negative pressure circuit described in embodiment is as follows：
Turn on main solid-state switch, and give mechanical switch hair separating brake order, reach 2 in the clearance between open contacts of the mechanical switch~
When 3 millimeters (mm), the IGCT S conductings in negative pressure circuit are closed in control, and now the electric capacity Cs in negative pressure circuit and transformer Ls is sent out
Raw vibration, and a negative pressure is coupled in change of current branch road by the transformer Ls, make the change of current branch road entirety conduction voltage drop low
In the arc voltage of the mechanical switch, so as to which impressed current is transferred to the change of current branch road, the machine by the mechanical switch branch road
Tool switching branches current over-zero blow-out, complete electric current transfer.Moving to its contact gap in the mechanical switch separating brake can hold
During by corresponding transient recovery voltage, the control main solid-state switch shut-off, now circuit energy is absorbed by MOV, and main switching is opened
Powered-down flow down is down to zero.
The shutting-brake control process of the composite switch circuit based on coupling negative pressure circuit described in embodiment is as follows：
Combined floodgate order is sent to the auxiliary solid-state switch of auxiliary solid-state switch branch road, the order auxiliary solid-state switch turns on, now
Electric current flows through the auxiliary solid-state switch branch road.Then the mechanical switch closure in control machinery switching branches, now electric current also can
The mechanical switch is flowed through, the auxiliary solid-state switch being then turned off in above-mentioned auxiliary solid-state switch branch road, now electric current is only by described
Mechanical switch.
Embodiment additionally provides a kind of switch block, and which employs the above-mentioned composite switch electricity based on coupling negative pressure circuit
Road.The switch block is used in three-phase alternating current system, and the circuit of each phase is respectively adopted above-mentioned based on coupling negative pressure circuit
Composite switch circuit.As shown in figure 3, the switch block employed respectively in A phase, B phase, C phase it is above-mentioned negative based on coupling
The composite switch circuit of volt circuit：A phase, B phase, C phase in main switching switch block is (for three with standby switching switch in figure
Phase line is distinguished, and A1, B1, C1 represent A phase, B phase, C phase line) employ the above-mentioned composite switch based on coupling negative pressure circuit
Circuit；A phase, B phase, C phase in standby switching switch block is (for the triple line differentiation with main switching switch, A2, B2, C2 in figure
To represent A phase, B phase, C phase line) equally employ the above-mentioned composite switch circuit based on coupling negative pressure circuit.
As shown in figure 3, embodiment additionally provides a kind of automatic transfer switch device, the automatic transfer switch device includes
Two above-mentioned switch blocks, switch based on one of them switch block, another be standby switching switch block.Course of normal operation
In, the main switching switch block conducting, realize that power supply provides electric current by the main switching switch block to the load；Institute
Standby switching switch block is stated to disconnect.Breaking down needs power supply being switched to standby switching switch block from main switching switch block
When, the main switching switch block is disconnected by above-mentioned separating brake control process, and by described in the connection of above-mentioned shutting-brake control process
Standby switching switch block.
The present embodiment with dual power supply redundancy electric power system come illustrate it is above-mentioned based on coupling the hybrid of negative pressure circuit cut automatically
The control for changing switching device uses.But it should be clear that above-described embodiment based on coupling negative pressure circuit it is hybrid from
Dynamic converting switch device is not limited in dual power supply redundancy electric power system, and more power supply redundancy electric power systems and in general are such as single
Electric supply system, it can use power system of switch etc. can be using electric based on coupling negative pressure described in above-described embodiment
The hybrid automatic transfer switch device on road.
Dual power supply redundancy electric power system structural representation according to embodiments of the present invention as shown in Figure 4.The dual power supply
Electric power system includes power supply, Control protection system, automatic transfer switch device, load and is made up of monitoring components such as sensors
Monitoring system, wherein power supply includes two sets of power supplys of working power and stand-by power supply, the master in the automatic transfer switch device
Switching switch block is connected with working power, standby switching switch block is connected with stand-by power supply.The dual power supply redundancy power supply system
The standby switching switch block on main switching switch block and/or stand-by power supply branch road in system on working power branch road can make
Forced commutation type combined type automatic transfer switch part is vibrated with the LC based on solid-state switch described in above-described embodiment.This implementation
Example is with the switching switch on the switching switch and stand-by power supply branch road on working power branch road using above-mentioned based on coupling negative pressure
It is illustrative exemplified by the hybrid automatic transfer switch part of circuit.
Dual power supply redundancy electric power system is under normal power supply state, working power branch road in the automatic transfer switch device
Main switching switch block in all on-off circuits (on-off circuit namely on A, B, C phase line) be in closed form
State, the electric power of working power are supplied to the load by the converting switch device；And in the automatic transfer switch device
All on-off circuits (on-off circuit namely on A, B, C phase line) in the standby switching switch block of stand-by power supply branch road are equal
It is off, the stand-by power supply does not provide electric power to the load.
The monitoring system continues or periodically monitored the working condition of whole electric power system, such as the abnormal feelings in system
Condition：Sensor monitoring in the working condition of Sensor monitoring working power in working power branch road, stand-by power supply branch road is standby
With the working condition of the Sensor monitoring load in the working condition of power supply, load branch circuit.
When the monitoring system detects working power failure or excessive pressure drop, corresponding event is sent to Control protection system
Hinder signal.Control protection system judges work after the expression working power out of order signal that monitoring system is sent is received
Make power supply to break down, it is necessary to which power supply is switched on stand-by power supply from working power.Now, the control in Control protection system
Switching switch block of the unit to working power sends separating brake order and the switching switch block to stand-by power supply sends life of closing a floodgate
Order, so as to control the switching switch block of working power to disconnect, and control stand-by power supply switching switch block close with
The electrical connection established between stand-by power supply and load, so as to provide electric power by stand-by power supply case load.
During normal operation, all mechanical switch in main switching switch block in A phases, B phases and C phase lines are in closed form
State, the electric current in each phase line flow through respective mechanical switch and provide electric power to load.Sent out in Sensor monitoring to working power
During raw failure, warning message is sent to Control protection system.After receiving the warning message, the control in Control protection system
The mechanical switch of main switching switch block of the unit into the automatic transfer switch device sends separating brake order, in the machinery
When switch contact is opened away from 2~3mm is reached, control is closed IGCT S in negative pressure circuit and turned on, and electric capacity Cs and transformer Ls vibrates, and leads to
Cross the transformer Ls and couple a negative pressure in change of current branch road, change of current branch road entirety conduction voltage drop is less than mechanical switch arc voltage,
So as to which impressed current is transferred to change of current branch road by mechanical switch branch road, mechanical switch branch current zero passage blow-out, completes electric current and turn
Move.When the mechanical switch separating brake moves to contact gap and can bear corresponding transient recovery voltage, main solid-state switch closes
Disconnected, now circuit energy is absorbed by MOV, and main switching switching current drops to zero；Auxiliary solid-state switch to standby switching switch simultaneously
Combined floodgate order is sent, load switchs power supply by standby switching, the mechanical switch that then the standby switching of closure switchs, and disconnects standby switching and open
The auxiliary solid-state switch closed.The making process of standby switching switch block is completed, and the switching in stand-by power supply branch road is opened so as to realize
Close the combined floodgate of device so that standby working power is powered to the load.
Electric power is provided in the dual power supply redundancy electric power system from stand-by power supply to load to be switched to from working power to institute
State load the process of electric power is provided and be switched to from stand-by power supply to the load and provide with providing electric power from working power to load
The process of electric power is similar, will not be repeated here.
Sensor in load branch circuit can send the fault message monitored after monitoring that the load breaks down
To Control protection system.The Control protection system can close working power branch road and stand-by power supply according to the fault message
Switching switch block in branch road, powered with disconnecting any power supply to the load.
The monitoring system detects switching and cut-offs state simultaneously, and status information feedback is returned into the Control protection system,
To ensure to cut-off and turn on.
Control protection system always according to reception control of the information realization to other interconnection switches or receive other contacts and open
The status information of pass, and all information of reception are sent to remote computer, while letter can be received from remote computer
Breath, such as the related switching switch of control carry out the information of closure or openness.
It is illustrative by taking three-phase alternating current as an example in embodiment, but it should be recognized by those skilled in the art that
In the case of basic inventive concept of the invention, on-off circuit of the invention, switching device, system and its control method
It is not limited in the three-phase alternating current based on exemplary illustration purpose in specification, on-off circuit of the invention, switching device, is
System and its control method are suitable for the including but not limited to system of direct current and alternating current.
It should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Front and rear two
Do not necessarily imply that it must is a kind of order of priority execution between individual step, as long as can solve the problem that the technical problem of the present invention
, and do not necessarily implied that between former and later two steps and necessarily eliminate other steps unlisted in invention, and
Before main device, auxiliary device not necessarily represent that main and auxiliary, the first device and the second device not necessarily represent in specification
Order afterwards, it is used only for distinguishing；Similarly, not necessarily meaning is a kind of directly electricity between each element of system, part
Gas connects, and what specification represented is only logical relation.Although the present invention is described in detail with reference to the foregoing embodiments,
It will be understood by those within the art that：It can still be repaiied to the technical scheme described in foregoing embodiments
Change, or equivalent substitution is carried out to which part technical characteristic；And these modifications or replacement, do not make appropriate technical solution
Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (15)
- A kind of 1. composite switch circuit based on coupling negative pressure circuit, it is characterised in thatThe composite switch circuit includes, mechanical switch branch road, change of current branch road, auxiliary solid-state switch branch road and energy absorption branch Road；Wherein,The change of current branch road includes main solid-state switch branch road and the coupling negative pressure circuit connected with the main solid-state switch branch road.
- 2. composite switch circuit according to claim 1, it is characterised in thatThe mechanical switch branch road, auxiliary solid-state switch branch road, energy absorption branch road connect with the change of current branch circuit parallel connection.
- 3. composite switch circuit according to claim 1, it is characterised in thatThe coupling negative pressure circuit includes coupling coil, IGCT and discharge capacity.
- 4. composite switch circuit according to claim 1, it is characterised in thatThe winding of coupling coil first of the coupling negative pressure circuit is located at the main solid-state switch branch road；The of the coupling coil Two windings are located at the discharge capacity circuit, and the IGCT, discharge capacity form loop with second winding.
- 5. composite switch circuit according to claim 4, it is characterised in thatThe electric capacity is powered by DC power supply circuit.
- 6. composite switch circuit according to claim 1, it is characterised in thatThe mechanical switch branch road includes mechanical switch；And/orThe main solid-state switching circuits include a solid-state switch or the solid-state switch of multiple series connection；And/or the auxiliary solid-state is opened Closing branch road includes a solid-state switch or the solid-state switch of multiple series connection；And/or the energy absorption branch road includes arrester.
- A kind of 7. on-off circuit control method, applied to any described mixing based on coupling negative pressure circuit of claim 1-6 Formula on-off circuit, it is characterised in thatMain solid-state switching circuits are controlled to turn on, control machinery branch road disconnects；Control negative pressure circuit turn-on；Main solid-state switching circuits are controlled to disconnect.
- 8. on-off circuit control method according to claim 7, it is characterised in thatThe contact of mechanical switch in the mechanical switch branch road, which reaches, effectively to be opened away from rear, control negative pressure circuit turn-on.
- 9. the on-off circuit control method according to claim 7 or 8, it is characterised in thatBy controlling the turn on thyristors in the negative pressure circuit to turn on negative pressure circuit.
- 10. on-off circuit control method according to claim 7, it is characterised in thatWhen the contact gap of mechanical switch in the mechanical switch branch road can bear transient recovery voltage, the master is controlled Solid-state switching circuits disconnect.
- A kind of 11. on-off circuit control method, applied to any described mixing based on coupling negative pressure circuit of claim 1-6 Formula on-off circuit, it is characterised in thatControl the auxiliary solid-state switch branch road conducting；The mechanical switch branch road is controlled to turn on, the control auxiliary solid-state switch branch road disconnects.
- 12. a kind of automatic transfer switch device, it is characterised in that the automatic transfer switch device includes main switching switch block Switch switch block with standby, wherein,It is described it is main switching switch block include three as described in claim 1-6 is any based on couple negative pressure circuit it is hybrid On-off circuit, it is respectively used in the A phase, B phase, C phase branch road of three-phase electricity；The standby switching switch block include three as described in claim 1-6 is any based on coupling the hybrid of negative pressure circuit On-off circuit, it is respectively used in the A phase, B phase, C phase branch road of three-phase electricity.
- A kind of 13. power supply switch protecting system, it is characterised in thatThe power protection switching system includes：Working power and stand-by power supply；Automatic transfer switch device as claimed in claim 12, the main switching switch block in the automatic transfer switch device It is connected with working power, standby switching switch block is connected with stand-by power supply；Monitoring system, the working condition for monitoring power supply and/or stand-by power supply；Control protection system, opened according to any described on-off circuit control method control automatic switchovers of claim 7-10 Close main switching switch block and/or standby switching switch block separating brake in device, and/or switch electricity according to claim 11 Road control method controls main switching switch block and/or standby switching switch block in the automatic transfer switch device to close a floodgate.
- 14. power supply switch protecting system according to claim 13, it is characterised in thatThe monitoring system is additionally operable to the information of the working condition being sent to the Control protection system, the control protection System controls the automatic transfer switch device in the main switching switch block and standby switching switch block according to described information Between switch.
- 15. the power supply switch protecting system according to claim 13 or 14, it is characterised in thatThe monitoring system also detects the switch closing and switch opening state of the automatic transfer switch, and by the feedback of the information of the state To the Control protection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007339.4A CN107896101B (en) | 2017-10-25 | 2017-10-25 | A kind of composite switch based on coupling negative pressure circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007339.4A CN107896101B (en) | 2017-10-25 | 2017-10-25 | A kind of composite switch based on coupling negative pressure circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107896101A true CN107896101A (en) | 2018-04-10 |
| CN107896101B CN107896101B (en) | 2019-10-29 |
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| CN201711007339.4A Active CN107896101B (en) | 2017-10-25 | 2017-10-25 | A kind of composite switch based on coupling negative pressure circuit |
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| CN107896101B (en) | 2019-10-29 |
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