CN207966846U - A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application - Google Patents
A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application Download PDFInfo
- Publication number
- CN207966846U CN207966846U CN201820100573.5U CN201820100573U CN207966846U CN 207966846 U CN207966846 U CN 207966846U CN 201820100573 U CN201820100573 U CN 201820100573U CN 207966846 U CN207966846 U CN 207966846U
- Authority
- CN
- China
- Prior art keywords
- current
- series compensation
- contact
- quiet
- dynamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application, switch select rapid repulsion mechanism matched using interlocking vacuum interrupter, the rapid translating of realization series compensation type current-limiting apparatus series compensation and two different function of current limliting；When Traction networks circuit normal operation, series compensation capacitor access, device is in series compensation working condition；When short trouble occurs for circuit, capacitor short-circuit in current-limiting reactor input coefficient, restriction effect is played to line short circuit current by interlocking vacuum switch action；The utility model is inside the same arc-chutes, and quiet main contact and dynamic main contac constitute input and excision that the first sets of contacts realizes current-limiting reactor, and quiet secondary contact and dynamic secondary contact constitute input and the excision that the second sets of contacts realizes compensation capacitor；The utility model uses single vacuum interrupter, one group of operating mechanism to realize that the string of trailer system is mended and converted with current-limiting function, can reduce the volume cost and economic cost of device, improve the reliability of system.
Description
Technical field
Interlocking vacuum switch in the utility model belongs to high-pressure vacuum switch field, and in particular to a kind of true using separate unit
It is spaced apart the interlocking vacuum switch for closing while realizing two kinds of different function；Its series compensation type current-limiting apparatus applied belongs to traction system
A kind of general field for (or electric system) series compensation and current limiting technique of uniting, and in particular to series connection based on interlocking vacuum switch
Offset-type current-limiting apparatus.
Background technology
The power supply of electric railway is to establish several traction substations along the railway, the main task of traction substation
110kV (or 220kV) three-phase alternating current for carrying out electric system conveying, through tractive transformer be reduced to 27.5kV (or 2 ×
Then 27.5kV) single-phase electricity is sent single phase power supply to contact net through feed line, powered from contact net to electric locomotive.However
At long steep grade, heavy-haul line and supply arm end, the contact net loss of voltage is more serious, occurs that voltage level is relatively low to be showed
As when net forces down minimum (19kV) required by drawing regulation, electric locomotive will be made not draw normally.In engineering reality
In trampling, series capacitor compensation is a kind of effective Improving Measurements, and compensator with series capaci tance is applied to can be effective in circuit
The voltage level for improving Traction networks improves the power factor of Traction networks, improves the quality of traction substation power supply.
In addition, short circuit is most common and most serious a kind of failure in tractive power supply system.It is sent out with an arm ground short circuit
Raw probability highest, when short circuit occurs for system, electric current sharply increases, and system voltage reduces, and current value reaches rated value when short-circuit
Several times to tens times, for limiting short-circuit current, short-circuit current is reduced to power equipment dynamic and thermal effect along the line
Impact can introduce reactance to reduce short circuit current level when short trouble occurs in faulty line.
Series compensation type fault current limiter can be very good to solve Traction networks pressure drop simultaneously greatly and the two large problems more than short circuit,
The topology proposed at present is mostly capacitance component both sides paralleling switch, and current-limiting reactor component both sides are without paralleling switch, such case
Lower reactance component is run in the line always, generates huge reactive loss.In view of this, having it is necessory to provide one kind
Series compensating function and the current-limiting apparatus of " zero " loss.
If realizing this current-limiting apparatus with series compensating function and " zero " loss, then series compensation capacitor is needed
It is connected in series after in parallel with high-speed switch respectively with current-limiting reactor.Both series compensation capacitance and current-limiting reactor in circuit
Matching relationship is：When circuit normal operation, the switch in parallel with compensating electric capacity keeps gate-dividing state, at this time capacitance component tie-in line
Lu Zhong, device work in series compensation state, and the switch in parallel with current-limiting reactor closes a floodgate, and current-limiting reactor is bypassed, and then realizes
Reactance runs " zero " loss.When short trouble occurs for circuit, the switch in parallel with compensating electric capacity closes a floodgate, in parallel with current-limiting reactor
Switch separating brake, by current-limiting reactor input coefficient, device works in limited current state, to line short circuit current play limitation make
With.
Current vacuum switch arc-chutes can only control a set of pieces, realize the switching of the component.It such as will be simultaneously
It realizes the switching of above-mentioned series compensation and short-circuit current limitation function, 2 vacuum switches, two groups of independent actuatings need to be equipped with
Mechanism considerably increases material, cost and volume in this case, aggravates the complexity of on-off control system, reduces circuit
The reliability of protection.
Invention content
The utility model aim is to provide a kind of series compensation type current-limiting apparatus interlocking vacuum switch and its application, adopt
With single arc-chutes, realization device series compensation and short circuit current limit two kinds of power and energies simultaneously, can reduce device volume, at
This, reduces vacuum interrupter quantity for device, simplifies operating mechanism and transmission parts design, improves device reliability.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of interlocking vacuum switch, main includes interlocking vacuum interrupter and rapid repulsion mechanism two parts；
The interlocking vacuum interrupter, including static side side section, moved end side section and shell structure；The subpackage of static side side
Containing static conductive rod 1, quiet main contact 2, quiet secondary contact 7 and metal flange 8；The upside of the upper end and insulation crust 10 of static conductive rod 1
It welds and is pierced by, the lower end of static conductive rod 1 is welded with quiet main contact 2, and metal flange 8 is fixed on 10 middle part of insulation crust, metal
The upper end of flange 8 is welded with quiet secondary contact 7；Moved end side section includes moving conductive rod 4, dynamic main contac 3, moving conductive ring 5 and dynamic pair
Contact 6；The upper end of moving conductive rod 4 is welded with dynamic main contac 3, is welded in the junction of 3 lower end of 4 upper end of moving conductive rod and dynamic main contac
It is connected to the moving conductive ring 5 of tubular, the lower end of moving conductive ring 5 is welded with dynamic secondary contact 6；It is quiet in the inside of same vacuum interrupter
Main contact (2) and dynamic main contac (3) constitute the first sets of contacts, and quiet secondary contact (7) and dynamic secondary contact (6) constitute the second sets of contacts；
Moving conductive rod 4 and insulation crust are connected between 10 downside by bellows 11；Shielding case 9, Neng Gouquan is equipped in insulation crust 10
Journey is wrapped in two groups of contacts；
The rapid repulsion mechanism, including motion parts, circuit part, bistable holding structure and frame；Motion parts
Including insulated tension pole 15 and repulsion dish 18, the lower end of insulated tension pole 15 is connected with repulsion dish 18；Circuit part includes charge power supply,
Combined floodgate circuit and opening circuit, opening circuit are gone here and there successively by the first driving coil 19, the control 21 of coil 1 and the first storage capacitor 22
Connection composition, combined floodgate circuit are sequentially connected in series by the second driving coil 20, the control 23 of coil 2 and the second storage capacitor 24；First
Driving coil 19 and the second driving coil 20 are located at 18 both sides of repulsion dish and are placed in frame 26；Charge power supply 25 is parallel to simultaneously
24 both sides of first storage capacitor 22 and the second storage capacitor carry out energy storage to the first storage capacitor 22 and the second storage capacitor 24；
Bistable holding structure includes bistable spring 16 and connecting rod 17, and frame 26 is fixed in 16 one end of bistable spring, and the other end passes through company
Extension bar 17 is connected with insulated tension pole 15；17 one end of connecting rod being connected with insulated tension pole 15 can be under the drive of insulated tension pole 15
It moves up and down；Bistable spring 16 is in compressive state always, and when insulated tension pole 15 moves upwards, bistable spring 16 passes through connection
Bar 17 is applied to the upward retentivity of insulated tension pole 15, and when insulated tension pole 15 moves downward, bistable spring 16 passes through connecting rod
17 are applied to the downward retentivity of insulated tension pole 15, and then realize the bistable holding effect of contact switch closing and switch opening；
Selection interlocking vacuum interrupter is coordinated with the rapid repulsion mechanism with bistable holding structure, inside arc-chutes
Moving conductive rod 4 be connected with the insulated tension pole 15 of rapid repulsion mechanism and repulsion dish 18, by repulsion dish 18 movement drive arc extinguishing
The on/off switch of two pairs of sets of contacts in room makes sets of contacts be kept at two positions under the action of bistable holding structure, to
Realize " single-pole double throw " function in vacuum extinction room.
The quiet main contact 2 and dynamic main contac 3 are that cup-shaped indulges magnetic contact or the horizontal magnetic contact of flute profile, and material is closed using copper chromium
Gold.
The dynamic secondary contact 6 and quiet secondary contact 7 need to design fluting according to specific, and material uses copper-tungsten.
A kind of series compensation type current-limiting apparatus based on interlocking vacuum switch, including device end of incoming cables 1 ', device leading-out terminal
2 ', described in current-limiting reactor 3 ', series compensation capacitor 4 ', zinc oxide pressure limiting energy-absorbing component 5 ', damper 6 ' and claim 1
Interlock vacuum switch 7 '；
Device main branch, the outlet of current-limiting reactor 3 ' are composed in series by current-limiting reactor 3 ' and series compensation capacitor 4 '
End is connected with the end of incoming cables of series compensation capacitor 4 ', while interlocking the static conductive rod terminals 12 and current limliting electricity of vacuum switch 7 '
The end of incoming cables of anti-device 3 ' is connected, the common point between moving conductive rod terminals 14 and current-limiting reactor 3 ' and series compensation capacitor 4 '
It is connected, metal flange terminals 13 are connected through damper 6 ' with the leading-out terminal of series compensation capacitor 4 '；Zinc oxide pressure limiting energy-absorbing
Component 5 ' is parallel to the both sides of series compensation capacitor 4 '；
Series compensation capacitor 4 ' is used for the system external circuit that compensation device end of incoming cables 1 ' is connected with device leading-out terminal 2 '
Middle induction reactance, current-limiting reactor 3 ' are used to limit the electric current in the short-circuit moment circuit of external circuit, and zinc oxide pressure limiting energy-absorbing component 5 ' is used
Overvoltage is generated in preventing the short-circuit moment capacitor of just generation；Damper 6 ' is made of inductance and resistor coupled in parallel and is used for series compensation
Its electric energy is discharged after 4 ' short circuit of capacitor, interlocks conversion of the vacuum switch 7 ' for realizing two function of series compensation and current limliting.
In same arc-chutes, quiet main contact (2) and dynamic main contac (3) constitute the first sets of contacts and realize current-limiting reactor 3 '
Input and excision, quiet secondary contact (7) and dynamic secondary contact (6) constitute the input that the second sets of contacts realizes series compensation capacitor 4 '
And excision.
The course of work of the series compensation type current-limiting apparatus, when the interlocking vacuum for being parallel to 3 ' both sides of current-limiting reactor
Quiet main contact 2 and dynamic main contac 3 in switch are closed, while when dynamic secondary contact 6 and the opening of quiet secondary contact 7, at this time current-limiting reactor
Device 3 ' is bypassed, and in 4 ' line attachment of series compensation capacitor, electric current is flowed into through device end of incoming cables 1 ' in external system, by mutual
Lock static conductive rod terminals 12, static conductive rod 1, quiet main contact 2, dynamic main contac 3, moving conductive rod 4, the moving conductive rod of vacuum switch
Terminals 14 and series compensation capacitor 4 ', flow out from device leading-out terminal 2 ', and device works in series compensation state；When being parallel to
Dynamic secondary contact 6 and quiet secondary contact 7 in the interlocking vacuum switch of 4 ' both sides of series compensation capacitor are closed, while quiet main contact 2
When being opened with dynamic main contac 3, at this time in 3 ' line attachment of current-limiting reactor, series compensation capacitor 4 ' is bypassed, external system
Middle electric current through device end of incoming cables 1 ' flow into, through current-limiting reactor 3 ', moving conductive rod leading-out terminal 14, moving conductive rod 4, moving conductive ring 5,
Dynamic secondary contact 6, quiet secondary contact 7, metal flange 8, metal flange leading-out terminal 13 and damper 6 ', flow out from device leading-out terminal 2 ',
Device works in limited current state.
Compared with prior art, the utility model has the following advantages：
1. utilizing characteristic of the interlocking vacuum interrupter two to sets of contacts and the rapid repulsion mechanism with bistable holding structure
Coordinated, to realize " single-pole double throw " function in vacuum extinction room, to control power supply to two different directions
Output controls two equipment simultaneously.
2. interlocking vacuum interrupter individually draws dynamic secondary contact by moving conductive ring from conducting rod, secondary contact is increased
Contact area improves the bearing capacity of electric current, simultaneously because dynamic main contac and secondary moving contact are independent, cup can more easily be added
Shape indulges magnetic, and the horizontal magnetic of flute profile or other contact magnetic field structure designs, main contact can have short circuit current connecting-disconnecting function.
3. two pairs of sets of contacts of the switch have interlocking linkage characteristic, when one group of contact is opened, another group of contact necessarily closes
It closes, alleviates the complexity of on-off control system.
4. using for rapid repulsion mechanism allows the current-limiting reactor in series compensation current-limiting apparatus quick in switch
Input reduces thermal shock and heavy current impact of the fault current to circuit, improves the safety of circuit.Rapid repulsion machine simultaneously
Structure is suitble to the characteristics of phase selection separating brake, can realize the control to switching practical arc time, makes switch contact most beneficial for putting out
The PHASE SEPARATION of arc greatly improves the practical connecting-disconnecting function and electric life of switch, improves system reliability and power quality.
5. using a switch can be realized the different components of series compensation capacitance and current-limiting reactor two in device input and
Excision reduces the use of a switch so that device volume greatly reduces, and floor space also greatly reduces, and greatly reduces
Required cost and maintenance cost.
Description of the drawings
Fig. 1 is that the utility model interlocks vacuum switch main contact and closes a floodgate, structural schematic diagram when secondary contact separating brake.
Fig. 2 is that the utility model interlocks vacuum switch main contact separating brake, structural schematic diagram when secondary contact closes a floodgate.
In Fig. 1 and Fig. 2：1, static conductive rod；2, quiet main contact；3, dynamic main contac；4, moving conductive rod；5, moving conductive ring；6、
Dynamic secondary contact；7, quiet secondary contact；8, metal flange；9, shielding case；10, insulation crust；11, bellows；12, static conductive rod wiring
End；13, metal flange terminals；14, moving conductive rod terminals；15, insulated tension pole；16, bistable spring；17, connecting rod 18,
Repulsion dish；19, the first driving coil；20, the second driving coil；21, coil 1 controls；22, the first storage capacitor；23, coil 2
Control；24, the second storage capacitor；25, charge power supply；26, frame.
Fig. 3 works in string for the series compensation type current-limiting apparatus of interlocking vacuum switch described in the utility model and its application and mends
Structural schematic diagram when state.
Fig. 4 works in current limliting for the series compensation type current-limiting apparatus of interlocking vacuum switch described in the utility model and its application
Structural schematic diagram when state.
In Fig. 3 and Fig. 4：1 ', device end of incoming cables；2 ', device leading-out terminal；3 ', current-limiting reactor；4 ', series compensation capacitance
Device；5 ' zinc oxide pressure limiting energy-absorbing components；6 ', damper；7 ', interlocking vacuum switch (repulsive force mechanism part is not drawn into).
Specific implementation mode
Below in conjunction with drawings and the specific embodiments, to interlocking vacuum switch described in the utility model and its series connection applied
Offset-type current-limiting apparatus is described in further detail.
As shown in Figure 1, interlocking vacuum switch described in the utility model, mainly by interlocking vacuum interrupter and rapid repulsion
Mechanism forms.The interlocking vacuum interrupter, including static side side section, moved end side section and shell structure.Static side side section
Including static conductive rod 1, quiet main contact 2, metal flange 8 and quiet secondary contact 7.The upper end of static conductive rod 1 is upper with insulation crust 10
Side is welded and is pierced by, and the lower end of static conductive rod 1 is welded with quiet main contact 2, and metal flange 8 is fixed on 10 middle part of insulation crust, gold
The upper end for belonging to flange 8 is welded with quiet secondary contact 7.Moved end side section includes moving conductive rod 4, dynamic main contac 3, moving conductive ring 5 and moves
Secondary contact 6.The upper end of moving conductive rod 4 is welded with dynamic main contac 3, the connection in 3 lower end of 4 upper end of moving conductive rod and dynamic main contac
Place is welded with the moving conductive ring 5 of tubular, and the lower end of moving conductive ring 5 is welded with dynamic secondary contact 6.Moved end side section is exactly single-pole double throw
" knife " so-called in switch, moving conductive rod 4 and insulation crust are connected between 10 downside by bellows 11.In insulation crust 10
Equipped with shielding case 9, can whole process be wrapped in two groups of contacts.In this way in the inside of same vacuum interrupter, quiet main contact 2 and dynamic master
Contact 3 constitutes the first sets of contacts, and quiet secondary contact 7 and dynamic secondary contact 6 constitute the second sets of contacts.When two sets of contacts sides are opened then
The other side closes, the relationship with interlocking linkage.Moving conductive rod 4 passes through quiet secondary contact 7, intermediate space that can bear enough voltage
It is required that.
The rapid repulsion mechanism, including motion parts, circuit part, bistable holding structure and frame.Motion parts
Including insulated tension pole 15 and repulsion dish 18, the lower end of insulated tension pole 15 is connected with repulsion dish 18.Circuit part includes charge power supply,
Combined floodgate circuit and opening circuit, opening circuit are gone here and there successively by the first driving coil 19, the control 21 of coil 1 and the first storage capacitor 22
Connection composition, combined floodgate circuit are sequentially connected in series by the second driving coil 20, the control 23 of coil 2 and the second storage capacitor 24.Charging
Power supply 25 is parallel to 24 both sides of the first storage capacitor 22 and the second storage capacitor simultaneously, can be to the first storage capacitor 22 and second
Storage capacitor 24 carries out energy storage.
Bistable holding structure includes bistable spring 16 and connecting rod 17, and frame 26 is fixed in 16 one end of bistable spring, another
End is connected by connecting rod 17 with insulated tension pole 15.17 one end of connecting rod being connected with insulated tension pole 15 can be in insulated tension pole 15
Drive under move up and down.Bistable spring 16 is in compressive state always, when insulated tension pole 15 drives connecting rod 17 to move upwards
When by 17 level point of connecting rod, bistable spring 16 is applied to the upward retentivity of insulated tension pole 15 by connecting rod 17, when exhausted
When edge pull rod 15 drives connecting rod to travel downward through the level point of connecting rod 17, bistable spring 16 is applied to by connecting rod 17
The downward retentivity of insulated tension pole 15, and then realize the bistable holding effect of contact switch closing and switch opening.
Moving conductive rod 4 inside arc-chutes is connected with the insulated tension pole 15 of rapid repulsion mechanism and repulsion dish 18, by repulsion
The movement of disk 18 drives the on/off switch of two pairs of sets of contacts in arc-chutes, so that sets of contacts is protected respectively under the action of bistable holding structure
It holds two positions, to realize " single-pole double throw " function in vacuum extinction room.
As shown in Figure 1, the quiet main contact 2 and dynamic main contac 3 of interlocking vacuum switch described in the utility model are in combined floodgate shape
State, dynamic secondary contact 6 and quiet secondary contact 7 are in gate-dividing state.Interlocking vacuum switch described in the utility model is described below in detail
The motion process that quiet main contact 2 and dynamic main contac 3 carry out separating brake, dynamic secondary contact 6 and quiet secondary contact 7 close a floodgate.
Charge power supply 25 carries out energy storage to the first storage capacitor 22 and the second storage capacitor 24, when system is by main contact point
Lock, after the action command that secondary contact closes a floodgate, the control of coil 1 21 is connected, and the first storage capacitor 22 carries out the first driving coil 19
Electric discharge generates lasting several milliseconds of pulse current and produces transient magnetic field around coil under the action of this pulse current,
The vortex opposite with the direction of the winding current is induced in metal repulsion dish 18 simultaneously, is vortexed magnetic field and the first driving coil of generation
19 magnetic field generates repulsion, and driving repulsion dish 18 drive insulated tension pole 15, moving conductive rod 4, dynamic main contac 3 and dynamic secondary contact 6 one
Linear motion downwards is played, the first sets of contacts quiet main contact 2 and dynamic main contac 3 is made to open, the quiet secondary contact 7 of the second sets of contacts and dynamic
6 reliable contacts of secondary contact.Connecting rod 17 moves downward one end under the downward drive of insulated tension pole 15, is constantly in compression shape
The bistable spring 16 of state is applied to the downward retentivity of insulated tension pole 15 by connecting rod 17, and then keeps quiet main contact 2 and move
The state that 3 separating brake of main contact, quiet secondary contact 7 and dynamic secondary contact 6 close a floodgate.
As shown in Fig. 2, the quiet main contact 2 and dynamic main contac 3 of interlocking vacuum switch described in the utility model are in separating brake shape
State, quiet secondary contact 7 and dynamic secondary contact 6 are in "on" position.Interlocking vacuum switch described in the utility model is described below in detail
Main contact is closed a floodgate, secondary contact carries out the motion process of separating brake.
Charge power supply 25 carries out energy storage to the first storage capacitor 22 and the second storage capacitor 24, when system is closed by main contact
Lock, after the action command of secondary contact separating brake, the control of coil 2 23 is connected, and the second storage capacitor 24 carries out the second driving coil 20
Electric discharge generates lasting several milliseconds of pulse current and produces wink around the second driving coil under the action of this pulse current
State magnetic field, while the vortex opposite with the direction of the winding current is induced in metal repulsion dish 18, it is vortexed the magnetic field and second of generation
The magnetic field of driving coil generates repulsion, and driving repulsion dish 18 drive insulated tension pole 15, moving conductive rod 4, dynamic main contac 3 and dynamic pair to touch
First 6 move along a straight line upwards together, keep 3 reliable contacts of the first sets of contacts quiet main contact 2 and dynamic main contac, the second sets of contacts quiet secondary tactile
First 7 and dynamic secondary contact 6 reliably open.Connecting rod 17 moves upwards one end under the upward drive of insulated tension pole 15, is constantly in
The bistable spring 16 of compressive state is applied to the upward retentivity of insulated tension pole 15 by connecting rod 17, and then keeps quiet main contact
2 and dynamic main contac 3 close a floodgate, the state of 6 separating brake of quiet secondary contact 7 and dynamic secondary contact.
As shown in figure 3, the series compensation type current-limiting apparatus described in the utility model using interlocking vacuum switch, including dress
Set end of incoming cables 1 ', device leading-out terminal 2 ', current-limiting reactor 3 ', series compensation capacitor 4 ', zinc oxide pressure limiting energy-absorbing component 5 ', resistance
Buddhist nun's device 6 ' and interlocking vacuum switch 7 '.
Device main branch is connected in series by current-limiting reactor 3 ' and series compensation capacitor 4 ', the outlet of current-limiting reactor 3 '
End is connected with the end of incoming cables of series compensation capacitor 4 ', while interlocking the static conductive rod terminals 12 and current-limiting reactor of vacuum switch
The end of incoming cables of device 3 ' is connected, moving conductive rod terminals 14 and the common point phase between current-limiting reactor 3 ' and series compensation capacitor 4 '
Even.Metal flange terminals 13 are connected through damper 6 ' with the leading-out terminal of series compensation capacitor 4 '.Zinc oxide pressure limiting energy-absorbing group
Part 5 ' is parallel to the both sides of series compensation capacitor 4 '.
Move secondary contact in series compensation type current-limiting apparatus series compensation capacitor described in the utility model both sides shown in Fig. 3
6 and quiet secondary contact 7 open, capacitance taps into access, works in series compensation state, be described below in detail described in the utility model
Transfer process Fig. 3 to the Fig. 4 of series compensation type current-limiting apparatus from string benefit state to limited current state, when device end of incoming cables 1 ' and device
When short trouble occurs for the system external circuit that leading-out terminal 2 ' is connect, the interlocking vacuum switch in device starts to act, and is parallel to string
Join and move secondary contact 6 in the interlocking vacuum switch of compensation capacitor 4 ' both sides and quiet secondary contact 7 is closed, while quiet main contact 2 and dynamic
When main contact 3 is opened, at this time in 3 ' line attachment of current-limiting reactor, series compensation capacitor 4 ' is bypassed, series compensation capacitance
Electric energy in device is discharged by damper, and for preventing short-circuit moment capacitor production just occurs for zinc oxide pressure limiting energy-absorbing component 5 '
Raw overvoltage, prevents capacitor to be burned.End of incoming cables 1 ' of the electric current through device flows into external system, through current-limiting reactor 3 ',
Moving conductive rod leading-out terminal 14, moving conductive rod 4, moving conductive ring 5, dynamic secondary contact 6, quiet secondary contact 7, metal flange 8, metal flange go out
Line end 13 and damper 6 ', flow out from device leading-out terminal 2 ', and device works in limited current state, short circuit is played to external circuit system
The effect of failure current limit.
As shown in figure 4, the series compensation type current-limiting apparatus described in the utility model using interlocking vacuum switch works in
Limited current state.Series compensation type current-limiting apparatus described in the utility model is described below in detail from limited current state to string benefit state to turn
Process is changed, it is mutual in device after the system external circuit short trouble excision that device end of incoming cables 1 ' and device leading-out terminal 2 ' are connect
Lock vacuum switch starts to act, and is parallel in the interlocking vacuum switch of 4 ' both sides of series compensation capacitor and moves secondary contact 6 and quiet pair
Contact 7 is opened, while when the quiet main contact 2 interlocked in vacuum switch and the closure of dynamic main contac 3 of both sides, 3 ' quilt of current-limiting reactor
It bypasses, in series compensation capacitor line attachment.End of incoming cables 1 ' of the electric current through device flows into external system, by interlocking vacuum
Static conductive rod terminals 12, static conductive rod 1, quiet main contact 2, dynamic main contac 3, moving conductive rod 4, the moving conductive rod terminals of switch
14 and series compensation capacitor 4 ', it is flowed out from device leading-out terminal 2 ', device works in series compensation state, is connect to device outer
Circuit plays the role of line build-out induction reactance.
Interlocking vacuum switch described in the utility model and its series compensation type current-limiting apparatus of application, in the same arc-chutes
In conversion to two functions of series compensation and current limliting can be completed, reduce number of parts and volume.Rapid repulsion machine simultaneously
Structure uses the conversion for so that switch can be quickly completed from string benefit to current limliting, reduces fault current to the thermal shock of circuit and big electricity
It the characteristics of stream impact, its suitable phase selection separating brake of rapid repulsion mechanism, realizes the control to switching the practical arc time, improves switch
Practical connecting-disconnecting function and electric life.The apparatus structure is simple, cheap, and reliability is high.
Claims (5)
1. a kind of interlocking vacuum switch, it is characterised in that：Main includes interlocking vacuum interrupter and rapid repulsion mechanism two parts；
The interlocking vacuum interrupter, including static side side section, moved end side section and shell structure；Static side side section includes quiet
Conducting rod (1), quiet main contact (2), quiet secondary contact (7) and metal flange (8)；The upper end of static conductive rod (1) and insulation crust
(10) upside is welded and is pierced by, and the lower end of static conductive rod (1) is welded with quiet main contact (2), and metal flange (8) is fixed on insulation
In the middle part of shell (10), the upper end of metal flange (8) is welded with quiet secondary contact (7)；Moved end side section includes moving conductive rod (4), moves
Main contact (3), moving conductive ring (5) and dynamic secondary contact (6)；The upper end of moving conductive rod (4) is welded with dynamic main contac (3), is led dynamic
The junction of electric pole (4) upper end and dynamic main contac (3) lower end is welded with the moving conductive ring (5) of tubular, the lower end of moving conductive ring (5)
It is welded with dynamic secondary contact (6)；In the inside of same vacuum interrupter, quiet main contact (2) and dynamic main contac (3) constitute the first contact
Group, quiet secondary contact (7) and dynamic secondary contact (6) constitute the second sets of contacts；Lead between on the downside of moving conductive rod (4) and insulation crust (10)
Cross bellows (11) connection；Shielding case (9) is equipped in insulation crust (10), can whole process be wrapped in two groups of contacts；
The rapid repulsion mechanism, including motion parts, circuit part, bistable holding structure and frame；Motion parts include
The lower end of insulated tension pole (15) and repulsion dish (18), insulated tension pole (15) is connected with repulsion dish (18)；Circuit part includes charging
Power supply, combined floodgate circuit and opening circuit, opening circuit control (21) and the first energy storage electricity by the first driving coil (19), coil 1
Hold (22) to be sequentially connected in series, combined floodgate circuit controls (23) and the second storage capacitor (24) by the second driving coil (20), coil 2
It is sequentially connected in series；First driving coil (19) and the second driving coil (20) are located at repulsion dish (18) both sides and are placed in frame
(26) in；Charge power supply (25) while it being parallel to the first storage capacitor (22) and the second storage capacitor (24) both sides, is stored up to first
It can capacitance (22) and the second storage capacitor (24) progress energy storage；Bistable holding structure includes bistable spring (16) and connecting rod
(17), frame (26) is fixed in bistable spring (16) one end, and the other end is connected by connecting rod (17) with insulated tension pole (15)；With
Connected connecting rod (17) one end of insulated tension pole (15) can move up and down under the drive of insulated tension pole (15)；Bistable spring
(16) it is in compressive state always, when insulated tension pole (15) moves upwards, bistable spring (16) is applied by connecting rod (17)
Give insulated tension pole (15) upward retentivity, when insulated tension pole (15) moves downward, bistable spring (16) passes through connecting rod
(17) it is applied to the downward retentivity of insulated tension pole (15), and then realizes the bistable holding effect of contact switch closing and switch opening；
Selection interlocking vacuum interrupter is coordinated with the rapid repulsion mechanism with bistable holding structure, dynamic inside arc-chutes
Conducting rod (4) is connected with the insulated tension pole (15) of rapid repulsion mechanism and repulsion dish (18), is driven by the movement of repulsion dish (18)
The on/off switch of two pairs of sets of contacts in arc-chutes makes sets of contacts be kept at two positions under the action of bistable holding structure,
To realize " single-pole double throw " function in vacuum extinction room.
2. interlocking vacuum switch according to claim 1, it is characterised in that：The quiet main contact (2) and dynamic main contac (3)
Magnetic contact or the horizontal magnetic contact of flute profile are indulged for cup-shaped, material uses chromiumcopper.
3. interlocking vacuum switch according to claim 1, it is characterised in that：The dynamic secondary contact (6) and quiet secondary contact (7)
It needs to design fluting according to specific, material uses copper-tungsten.
4. a kind of series compensation type current-limiting apparatus based on interlocking vacuum switch, it is characterised in that：Including device end of incoming cables (1 '),
Device leading-out terminal (2 '), current-limiting reactor (3 '), series compensation capacitor (4 '), zinc oxide pressure limiting energy-absorbing component (5 '), damping
Vacuum switch (7 ') is interlocked described in device (6 ') and claim 1；
Device main branch is composed in series by current-limiting reactor (3 ') and series compensation capacitor (4 '), current-limiting reactor (3 ') goes out
Line end is connected with the end of incoming cables of series compensation capacitor (4 '), while interlocking the static conductive rod terminals (12) of vacuum switch (7 ')
It is connected with the end of incoming cables of current-limiting reactor (3 '), moving conductive rod terminals (14) and current-limiting reactor (3 ') and series compensation capacitance
Common point between device (4 ') is connected, outlet of the metal flange terminals (13) through damper (6 ') Yu series compensation capacitor (4 ')
End is connected；Zinc oxide pressure limiting energy-absorbing component (5 ') is parallel to the both sides of series compensation capacitor (4 ')；
Series compensation capacitor (4 ') is used for the system dispatch from foreign news agency that compensation device end of incoming cables (1 ') is connected with device leading-out terminal (2 ')
Induction reactance in road, current-limiting reactor (3 ') are used to limit the electric current in the short-circuit moment circuit of external circuit, zinc oxide pressure limiting energy-absorbing component
(5 ') it is used to prevent just to occur short-circuit moment capacitor and generates overvoltage；Damper (6 ') is made of inductance and resistor coupled in parallel and is used for
Its electric energy is discharged after series compensation capacitor (4 ') short circuit, interlocking vacuum switch (7 ') is for realizing two work(of series compensation and current limliting
The conversion of energy.
5. series compensation type current-limiting apparatus according to claim 4, it is characterised in that：In same arc-chutes, quiet master touches
Head (2) and dynamic main contac (3) constitute the first sets of contacts realization current-limiting reactor (3 ') input and excision, quiet secondary contact (7) and
Dynamic secondary contact (6) constitutes input and the excision that the second sets of contacts realizes series compensation capacitor (4 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820100573.5U CN207966846U (en) | 2018-01-19 | 2018-01-19 | A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820100573.5U CN207966846U (en) | 2018-01-19 | 2018-01-19 | A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207966846U true CN207966846U (en) | 2018-10-12 |
Family
ID=63734286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820100573.5U Expired - Fee Related CN207966846U (en) | 2018-01-19 | 2018-01-19 | A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207966846U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
| CN112151304A (en) * | 2020-09-25 | 2020-12-29 | 朱承风 | Vacuum circuit breaker |
| CN112366667A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Integrated fast switch type current limiter and method for matching integrated fast switch type current limiter with circuit breaker |
| CN112793437A (en) * | 2020-12-30 | 2021-05-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Direct-current charging contactor, ultrahigh-voltage electric vehicle and power battery charging method |
-
2018
- 2018-01-19 CN CN201820100573.5U patent/CN207966846U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133862A (en) * | 2018-01-19 | 2018-06-08 | 西安交通大学 | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application |
| CN108133862B (en) * | 2018-01-19 | 2024-03-26 | 西安交通大学 | Interlocking vacuum switch and series compensation type current limiting device and method applied by same |
| CN112151304A (en) * | 2020-09-25 | 2020-12-29 | 朱承风 | Vacuum circuit breaker |
| CN112151304B (en) * | 2020-09-25 | 2023-09-26 | 河北华能源电力设备有限公司 | Vacuum circuit breaker |
| CN112366667A (en) * | 2020-11-02 | 2021-02-12 | 西安交通大学 | Integrated fast switch type current limiter and method for matching integrated fast switch type current limiter with circuit breaker |
| CN112366667B (en) * | 2020-11-02 | 2021-08-10 | 西安交通大学 | Integrated fast switch type current limiter and method for matching integrated fast switch type current limiter with circuit breaker |
| CN112793437A (en) * | 2020-12-30 | 2021-05-14 | 重庆金康赛力斯新能源汽车设计院有限公司 | Direct-current charging contactor, ultrahigh-voltage electric vehicle and power battery charging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108133862A (en) | A kind of series compensation type current-limiting apparatus and method for interlocking vacuum switch and application | |
| CN207966846U (en) | A kind of series compensation type current-limiting apparatus interlocking vacuum switch and application | |
| CN208173490U (en) | A kind of high voltage DC breaker arc-chutes holding meanss | |
| CN105280431B (en) | Electromagnetic reluctance pulling force fast arc extinction earthed switch | |
| CN107275145A (en) | A kind of Quick mechanical formula switch and the high-voltage electric power system switched using the Quick mechanical formula | |
| CN110224379A (en) | Based on vacuum and the concatenated novel high-pressure dc circuit breaker of SF6 arc-chutes | |
| CN103928913A (en) | High-voltage direct-current circuit breaker based on rapid repulsion force mechanism and insulating transformer | |
| CN105790227A (en) | Series compensation zero-loss current limiting integrated system | |
| CN107863761A (en) | A kind of high voltage DC breaker with saturable reactor | |
| CN202944220U (en) | Segmental power supply and protection system of autotransformer (AT) traction power network of electrified railway | |
| CN2914304Y (en) | Permanent magnetism intelligent mechanism low-voltage vacuum breaker | |
| CN208368418U (en) | A kind of manifold type high voltage DC breaker | |
| CN206947242U (en) | A kind of outdoor high-voltage vacuum breaker | |
| CN2424559Y (en) | Device for fast regulating arc-extinguishing coil | |
| CN207038414U (en) | A kind of Quick mechanical formula switch and the high-voltage electric power system switched using the Quick mechanical formula | |
| CN202839447U (en) | Intelligent vortex touch high-speed switch | |
| CN1885664A (en) | Bias bridge type short circuit current limiter | |
| CN105374615B (en) | A kind of phase selecting switching-on apparatus of high-voltage great-current | |
| CN106972502A (en) | A kind of series capacitor segmented compensation device | |
| CN103633978A (en) | Economical on-load tap-changer and method thereof | |
| CN100579816C (en) | Thyristor controlling series transformer type electrified railway dragging net pressure-regulating apparatus | |
| CN2488165Y (en) | Vacuum circuit breaker | |
| CN206517068U (en) | A kind of adjustable serial compensation system | |
| CN206003611U (en) | Variable impedance transformer | |
| CN208046226U (en) | Combined DC release unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20220119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |