CN205789705U - A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection - Google Patents
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection Download PDFInfo
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- CN205789705U CN205789705U CN201620694819.7U CN201620694819U CN205789705U CN 205789705 U CN205789705 U CN 205789705U CN 201620694819 U CN201620694819 U CN 201620694819U CN 205789705 U CN205789705 U CN 205789705U
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- reactor
- gas arc
- chopper
- short circuit
- underframe
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Abstract
This utility model provides a kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection so that two post choppers in parallel all can effectively cut-off, and simultaneously area is little, simple for structure, layout is neat.It includes a reactor, comprises the chopper of two post gas arc-extinguishing chambers, capacitor, chopper underframe and an operating mechanism；Described reactor arranges an input terminal and two outlet terminals；The upper end of two post gas arc-extinguishing chambers in parallel is common current leading-out terminal, and lower end is respectively corresponding gas arc-extinguishing chamber end of incoming cables；Two outlet terminals of gas arc-extinguishing chamber end of incoming cables linked reactor respectively, and connect one end of capacitor, the other end ground connection of capacitor respectively；The arc-chutes insulating supporting that gas arc-extinguishing chamber is arranged through lower section respectively is mounted in parallel on chopper underframe, and the capacitor of gas arc-extinguishing chamber and vertical is fixed on same chopper underframe；Two post gas arc-extinguishing chambers share a lower section operating mechanism being fixed on chopper underframe.
Description
Technical field
This utility model relates to Large Copacity short circuit current breaking device field, a kind of cut-offs technology based on parallel connection
Large Copacity short circuit current breaking device.
Background technology
Existing electrical network many places occur that short-circuit current value exceedes the connecting-disconnecting function of conventional arc-chutes 63kA, even up to 80kA,
Therefore the breaking device cut-offfing Large Copacity short circuit current ability is very urgent, and this utility model solves Large Copacity short circuit exactly
The breaking device problem of electric current.
Chinese patent 200710052947.7 " parallel circuit breaker "；Chinese patent 200810197118.2 " hollow coupling
Reactor "；Chinese patent 200910208943.2 " parallel circuit breaker based on tightly coupled air reactor "；Chinese patent
201410127571.1 " the generator outlet choppers of a kind of parallel connection type " be all referred to the correlation technique of parallel circuit breaker with
Principle, and all studied from the design angle of equalizing reactor and described.All think that reactor is capable of automatic current equalizing
And current-limiting function, thus realize increasing exponentially chopper and bear rated short circuit current and cut-off the ability of short circuit current, all do not carry
And the actual application of this principle and loop seal in reactor arc-chutes are cut-off the impact of short circuit current.
Parallel connection is cut-off when preferable current-sharing synchronous switching off, and circuit is shown as approximating zero impedance by reactor.And actual cut-off
During arc-chutes in parallel cannot accomplish Complete Synchronization, because the arc-chutes hereafter cut-off will be because of cut-offfing reactor introducing
Big impedance, causes too fast transient recovery voltage, and significantly beyond the insulation recovery ability of arc-chutes, the arc-chutes opened after causing
Failure of interruption.
Utility model content
For problems of the prior art, this utility model provides that a kind of to cut-off the Large Copacity of technology based on parallel connection short
Road current breaking device so that two post choppers in parallel all can effectively cut-off, and simultaneously area is little, simple for structure, layout is whole
Together.
This utility model is to be achieved through the following technical solutions:
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection, including a reactor, comprises two posts
The chopper of gas arc-extinguishing chamber, capacitor, chopper underframe and an operating mechanism；Described reactor arranges an input terminal
With two outlet terminals；The upper end of two post gas arc-extinguishing chambers in parallel is common current leading-out terminal, and lower end is respectively corresponding gas
Arc-chutes end of incoming cables；Two outlet terminals of gas arc-extinguishing chamber end of incoming cables linked reactor respectively, and connect capacitor respectively
One end, the other end ground connection of capacitor；The arc-chutes insulating supporting that gas arc-extinguishing chamber is arranged through lower section respectively is mounted in parallel disconnected
On the device underframe of road, the capacitor of gas arc-extinguishing chamber and vertical is fixed on same chopper underframe；Two post gas arc-extinguishing chambers
Share a lower section operating mechanism being fixed on chopper underframe.
Preferably, reactor fixes on the ground through the fixing reactor insulating supporting connected and reactor underframe successively.
Preferably, reactor uses and arranges an input terminal and the tightly coupled air reactor of two outlet terminals.
Preferably, two leading-out terminals of reactor respectively by straight line conductor and broken line conductor respectively with two post gas arc extinguishings
The end of incoming cables of room connects.
Preferably, reactor is arranged far from the side of chopper as the input terminal of electric current common port, and reactor is equal
Two branch roads after stream are positioned close to the side of chopper as leading-out terminal.
Preferably, described gas arc-extinguishing chamber uses single to cut-off the short circuit current ability SF higher than 110kV/40kA6Gas
Body arc-chutes.
Compared with prior art, this utility model has a following useful technique effect:
This utility model have employed, by reactor, the shunt reactor winding that Same Name of Ends is reverse, by two leading-out terminals with disconnected
After two gas arc-extinguishing chamber series connection in the device of road, it is possible to when ensureing that two branch roads as outlet terminal are normal through short circuit current,
Reactor does not affect the line parameter circuit value of transmission line of electricity；When two branch roads are normal through short circuit current, short circuit current divided equally by reactor, makes
Obtain two branch roads in parallel and flow through current unbalance factor less than design load；During two branch breaking short circuit currents, each branch, short-circuit electric current
Value less than the rated short circuit drop-out current value of arc-chutes, each branch road under the conditions of cut-offfing the most in the same time, after cut-off the short circuit of branch road
Current value is restricted to below the rated short circuit drop-out current value of arc-chutes by reactor.Reactor in this utility model is used for protecting
Demonstrate,prove maximum current value that two gas arc-extinguishing chambers flow through all less than the rated short circuit drop-out current value of arc-chutes；Use electricity simultaneously
Container is connected in parallel on the two ends of gas arc-extinguishing chamber, is used for the transient recovery voltage suppressing reactor to cause, makes the wink at arc-chutes two ends
State recovers the voltage arc extinguishing ability less than arc-chutes, thus ensures effectively cut-offfing of arc-chutes.
Accompanying drawing explanation
Fig. 1 is the structural representation of breaking device described in this utility model example.
In figure: 1-reactor；2-reactor insulating supporting；3-reactor underframe；4-straight line conductor；5-broken line conductor；6-
Gas arc-extinguishing chamber；7-arc-chutes insulating supporting；8-capacitor；9-chopper underframe；10-operating mechanism.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, described in be to explanation of the present utility model
It not to limit.
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection of this utility model, it include reactor 1,
Chopper, capacitor 8, arc-chutes insulating supporting 7, chopper underframe 9 and an operating mechanism 10.Chopper comprises two post gases
Arc-chutes 6；Reactor 1 is an input terminal, the tightly coupled air reactor of two outlet terminals；Gas arc-extinguishing chamber 6 and electricity
Container 8 vertical is on same chopper underframe 9, and two post gas arc-extinguishing chambers 6 share an operating mechanism 10；The wiring in loop
Mode is, two post gas arc-extinguishing chambers 6 in parallel are connected on 1 two outlet terminals of reactor respectively, the lower end of gas arc-extinguishing chamber 6
It is connected with reactor 1 and capacitor 8 simultaneously, the other end ground connection of capacitor 8；The lower end of gas arc-extinguishing chamber 6 is end of incoming cables, upper end
For leading-out terminal.This Large Copacity short circuit current breaking device has the advantages that floor space is little, simple for structure, layout is neat.
It is concrete as it is shown in figure 1, in this utility model, reactor 1 is reactor underframe 3, reactor the most respectively
Insulating supporting 2 and reactor 1.Fixing connection, reactor insulation is used between reactor underframe 3 with reactor insulating supporting 2
Fixing connection is used between support 2 and reactor 1.The electric current common port of reactor 1 is in the side away from chopper, and reactor 1 is equal
Two branch road leading-out terminals after stream are in the side near chopper.
Two post gas arc-extinguishing chambers 6 of described chopper and the arc-chutes insulating supporting 7 of correspondence are fixed on same chopper
The top of underframe 9, capacitor 8 in parallel is also secured at the top of chopper underframe 9, and the lower end of two gas arc-extinguishing chambers 6 is respectively
Being connected with two lower wire ends of reactor, gas arc-extinguishing chamber 6 lower wire end is connected with corresponding capacitor 8 upper end, capacitor 8
Lower end ground connection.
The mode of connection in loop is, inlet wire accesses the electric current common port of reactor 1, two branch road leading-out terminals of reactor 1
The end of incoming cables of two post gas arc-extinguishing chambers 6 it is respectively connected to, then by the common current of two post gas arc-extinguishing chambers 6 by two conductors
End is drawn.
As a example by Fig. 1, reactor underframe 3 fixes on the ground, and the top of underframe 3 is bolted reactor insulation
Support 2, the top of reactor insulating supporting 2 is bolted reactor 1.The upper end of gas arc-extinguishing chamber 6 is common current end, gas
The lower end of body arc-chutes 6 is connected by straight line conductor 4 and broken line conductor 5 respectively with the diverter branch of reactor 1.Capacitor 8 with
Gas arc-extinguishing chamber 6 connects.Operating mechanism 10 is fixed on the lower section of chopper underframe 9, the arc-chutes insulation of two post gas arc-extinguishing chambers 6
Supporting 7 to be mounted in parallel on underframe 9, gas arc-extinguishing chamber 6 in parallel lays respectively at the top of arc-chutes insulating supporting 7.
Utilize and there is the reactor 1 of equal current limliting current-limiting function by after short circuit current current-sharing/current limliting so that breaking as switch
Road device can cut-off short-circuit current value, and capacitor 8 in parallel can suppress the reactor impact on transient recovery voltage, thus protect
Demonstrate,prove two post gas arc-extinguishing chambers all to realize effectively cut-offfing to short circuit current.
Claims (6)
1. the Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection, it is characterised in that include a reactor
(1) chopper of two post gas arc-extinguishing chambers (6), capacitor (8), chopper underframe (9) and an operating mechanism (10), are comprised；
Described reactor (1) arranges an input terminal and two outlet terminals；The upper end of two post gas arc-extinguishing chambers (6) in parallel
For common current leading-out terminal, lower end is respectively corresponding gas arc-extinguishing chamber (6) end of incoming cables；Gas arc-extinguishing chamber (6) end of incoming cables connects respectively
Connect two outlet terminals of reactor (1), and connect one end of capacitor (8), the other end ground connection of capacitor (8) respectively；
The arc-chutes insulating supporting (7) that gas arc-extinguishing chamber (6) is arranged through lower section respectively is mounted in parallel on chopper underframe (9),
The capacitor (8) of gas arc-extinguishing chamber (6) and vertical is fixed on same chopper underframe (9)；Two post gas arc-extinguishing chambers (6)
Share a lower section operating mechanism (10) being fixed on chopper underframe (9).
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection the most according to claim 1, its feature
Being, reactor (1) fixes on the ground through the fixing reactor insulating supporting (2) connected and reactor underframe (3) successively.
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection the most according to claim 1, its feature
Being, reactor (1) uses and arranges an input terminal and the tightly coupled air reactor of two outlet terminals.
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection the most according to claim 1, its feature
Be, two leading-out terminals of reactor (1) respectively by straight line conductor (4) and broken line conductor (5) respectively with two post gas arc extinguishings
The end of incoming cables of room (6) connects.
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection the most according to claim 1, its feature
Being, reactor (1) is arranged far from the side of chopper as the input terminal of electric current common port, after reactor (1) current-sharing
Two branch roads be positioned close to the side of chopper as leading-out terminal.
A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection the most according to claim 1, its feature
Being, described gas arc-extinguishing chamber (6) uses single to cut-off the short circuit current ability SF higher than 110kV/40kA6Gas arc extinguishing
Room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694819.7U CN205789705U (en) | 2016-07-01 | 2016-07-01 | A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694819.7U CN205789705U (en) | 2016-07-01 | 2016-07-01 | A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205789705U true CN205789705U (en) | 2016-12-07 |
Family
ID=58126122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620694819.7U Active CN205789705U (en) | 2016-07-01 | 2016-07-01 | A kind of Large Copacity short circuit current breaking device cut-offfing technology based on parallel connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205789705U (en) |
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2016
- 2016-07-01 CN CN201620694819.7U patent/CN205789705U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |