CN207200269U - A kind of direct current based on LC concussions cut-offs system - Google Patents
A kind of direct current based on LC concussions cut-offs system Download PDFInfo
- Publication number
- CN207200269U CN207200269U CN201721137979.2U CN201721137979U CN207200269U CN 207200269 U CN207200269 U CN 207200269U CN 201721137979 U CN201721137979 U CN 201721137979U CN 207200269 U CN207200269 U CN 207200269U
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- electric brake
- leading
- inlet wire
- out terminal
- cut
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- 206010010254 Concussion Diseases 0.000 title claims abstract description 12
- 230000009514 concussion Effects 0.000 title claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 41
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 239000010703 silicon Substances 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 230000008033 biological extinction Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229940105296 zinc peroxide Drugs 0.000 description 1
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
It the utility model is related to a kind of direct current based on LC concussions and cut-off system, including capacitor C, reactor L, controllable silicon SCR, high-speed eddy switch K0, zinc oxide FR and isolation electric brake G1, G2, G3.Capacitor C, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet terminate the end of incoming cables of controllable silicon SCR.Reactor L, its inlet wire terminate the leading-out terminal of controllable silicon SCR, its outlet termination isolation switch G2 end of incoming cables.High-speed eddy switchs K0, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination isolation electric brake G2 end of incoming cables.Zinc oxide FR is connected in parallel on capacitor C both ends.Isolate electric brake G3, its inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.The utility model can effectively cut-off various over current faults in DC line, reduce impact of the fault current to electrical equipment in power system, avoid the further expansion of line fault, can also pass through isolation switch service without power-off or more changing device component.
Description
Technical field
It the utility model is related to direct current transmission of electricity and cut-off technical field, and in particular to a kind of direct current based on LC concussions cut-offs
System.
Background technology
Dc circuit breaker is equipment very important and essential in direct current field device.China's dc circuit breaker, it is long
Phase relies on import, and external producer is even more to carry out technology blockage to its key technology, limits China's dc circuit breaker R ＆ D Level
Development.The test capability deficiency of domestic dc circuit breaker, which also turns into, influences an important factor for it is developed.Due to dc circuit breaker
Fail to domesticize, its high purchase cost, constrain the ability that China's DC fields system integration is domesticized.
Independent research of the construction of dc circuit breaker test capability to dc circuit breaker has important directive significance, experiment
Ability should be able to equivalent the type dc circuit breaker actual motion condition, and can quick release of energy, shaken including LC low frequencies
Movable property gives birth to direct current breaking current.After dc circuit breaker fracture disjunction, the energy stored in inductance is to the electric capacity in dc circuit breaker
Device charges, and causes the voltage on capacitor to rise rapidly, so as to produce restoring over-voltage at fracture both ends；After current segmenting, examination
Testing in loop to let out can protect branch road to vibrate the dump energy in quick consumption test loop by LC.Due in whole test loop
In, it is necessary to repeatedly use the inductance of different L values, the segmentation inductance in dc circuit breaker electric current disjunction experimental loop, can influence whole
The design of individual test loop, and test value and the identical of actual value are had an impact.Therefore, the inductance of reasonable Arrangement difference L values
Experimentation cost can be reduced and improve test reliability.
The dc circuit breaker that existing market DC line uses, there is volume it is larger, involve great expense, connecting-disconnecting function compared with
It is small, the needs of power system can not be met, the operation of power system certain hidden danger is present.
Utility model content
The purpose of this utility model is that providing a kind of direct current based on LC concussions cut-offs system, and the system can be in direct current
When transmission line of electricity breaks down, the various over current faults in DC line are effectively cut-off, reduce short circuit current in power system
The impact of electrical equipment, avoids line fault from further expanding.
To achieve the above object, the utility model employs following technical scheme：
A kind of direct current based on LC concussions cut-offs system, including capacitor C, reactor L, controllable silicon SCR, high-speed eddy are opened
Close K0, zinc oxide FR and isolation electric brake G1, G2, G3.The capacitor C, its inlet wire termination isolation electric brake G1 leading-out terminal, its
Outlet terminates the end of incoming cables of controllable silicon SCR.The reactor L, its inlet wire terminate the leading-out terminal of controllable silicon SCR, its outlet termination
Isolation switch G2 end of incoming cables.The high-speed eddy switchs K0, its inlet wire termination isolation electric brake G1 leading-out terminal, its outlet termination
Isolate electric brake G2 end of incoming cables.The zinc oxide FR is connected in parallel on capacitor C both ends.The inlet wire termination of the isolation electric brake G1 is matched somebody with somebody
The end of incoming cables AL1 of electric cabinet.The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2.The isolation electric brake G3, its
Inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.
Further, the high-speed eddy switch K0 uses vacuum extinction breaker, and the switch passes through installed in power distribution cabinet
In controller control it to cut-off.
Further, described isolation switch G1, G2, G3 are connected with the operating mechanism in power distribution cabinet, by artificial
Control it to cut-off.
From above technical scheme, the utility model has the advantages that safe and reliable, action is fast, connecting-disconnecting function is strong, energy
Various over current faults in DC line are effectively cut-off, reduces impact of the fault current to electrical equipment in power system, avoids line
The further expansion of road failure, it can also pass through isolation switch service without power-off or more changing device component.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
A kind of direct current based on LC concussions as shown in Figure 1 cut-offs system, including capacitor C, reactor L, controllable silicon
SCR, high-speed eddy switch K0, zinc oxide FR and isolation electric brake G1, G2, G3.The capacitor C, its inlet wire termination isolation electricity
Lock G1 leading-out terminal, its outlet terminate the end of incoming cables of controllable silicon SCR.The reactor L, its inlet wire termination controllable silicon SCR go out
Line end, its outlet termination isolation switch G2 end of incoming cables.The high-speed eddy switchs K0, and its inlet wire termination isolation electric brake G1's goes out
Line end, its outlet termination isolation electric brake G2 end of incoming cables.The zinc oxide FR is connected in parallel on capacitor C both ends.The isolation electricity
The end of incoming cables AL1 of lock G1 inlet wire termination power distribution cabinet.The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2.Institute
State isolation electric brake G3, its inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.It is described can
Silicon SCR is controlled, for forming LC concussions.The high-speed eddy switchs K0, for cutting off short trouble.The zinc oxide FR, is used for
Protective condenser C, prevent that capacitor C is over-pressed.Described isolation switch G1, G2, G3, for service without power-off or more changing device member device
Part.
Further, the high-speed eddy switch K0 uses vacuum extinction breaker, and the switch passes through installed in power distribution cabinet
In controller control it to cut-off.
Further, described isolation switch G1, G2, G3 are connected with the operating mechanism in power distribution cabinet, by artificial
Control it to cut-off.
Operation principle of the present utility model is：
When DC power transmission line outlet failure, the controller in power distribution cabinet sends separating brake to high-speed eddy switch K0 immediately
Order, while send turn-on command to controllable silicon SCR.After controllable silicon SCR turns on, the capacitor C and reactor L in device is stood
Concussion discharge loop is formed, the alternating current of high frequency, the alternating current of the high frequency and the power frequency of circuit are flowed through in the loop
Electric current is superimposed to form zero crossing, and high-speed eddy switch K0 completes arc extinguishing in the zero crossing of superposition.When high-speed eddy switch K0 breaks
After opening, the controller in power distribution cabinet sends shut-off instruction to controllable silicon SCR immediately, and now electric current flows through capacitor C times in circuit
Road.When capacitor C both end voltages rise to zinc oxide FR conducting voltages, zinc oxide FR is turned on immediately, now electric current stream in circuit
Zinc peroxide FR loops, shut-off is now completed during controllable silicon SCR current zero-crossing point.After controllable silicon SCR turns off, zinc oxide FR
Immediately turn off, that completes DC power transmission line cut-offs various over current faults.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical scheme of utility model is made, the protection of the utility model claims book determination all should be fallen into
In the range of.
Claims (3)
1. a kind of direct current based on LC concussions cut-offs system, it is characterised in that：Including capacitor C, reactor L, controllable silicon SCR,
High-speed eddy switch K0, zinc oxide FR and isolation electric brake G1, G2, G3；The capacitor C, its inlet wire termination isolation electric brake G1
Leading-out terminal, its outlet terminate controllable silicon SCR end of incoming cables；The reactor L, its inlet wire terminate the leading-out terminal of controllable silicon SCR,
Its outlet termination isolation switch G2 end of incoming cables；The high-speed eddy switchs K0, and its inlet wire termination isolates electric brake G1 leading-out terminal,
Its outlet termination isolation electric brake G2 end of incoming cables；The zinc oxide FR is connected in parallel on capacitor C both ends；The isolation electric brake G1's
Inlet wire terminates the end of incoming cables AL1 of power distribution cabinet；The leading-out terminal AL2 of the outlet termination power distribution cabinet of the isolation electric brake G2；The isolation
Electric brake G3, its inlet wire termination isolation electric brake G1 end of incoming cables, its outlet termination isolation electric brake G2 leading-out terminal.
2. a kind of direct current based on LC concussions according to claim 1 cut-offs system, it is characterised in that：The high-speed eddy
Switch K0 uses vacuum extinction breaker, and the switch controls it to cut-off by the controller in power distribution cabinet.
3. a kind of direct current based on LC concussions according to claim 1 cut-offs system, it is characterised in that：The isolation switch
G1, G2, G3 are connected with the operating mechanism in power distribution cabinet, and by manual control, it cut-offs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137979.2U CN207200269U (en) | 2017-09-06 | 2017-09-06 | A kind of direct current based on LC concussions cut-offs system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721137979.2U CN207200269U (en) | 2017-09-06 | 2017-09-06 | A kind of direct current based on LC concussions cut-offs system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207200269U true CN207200269U (en) | 2018-04-06 |
Family
ID=61791503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721137979.2U Expired - Fee Related CN207200269U (en) | 2017-09-06 | 2017-09-06 | A kind of direct current based on LC concussions cut-offs system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207200269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394756A (en) * | 2017-09-06 | 2017-11-24 | 安徽徽电科技股份有限公司 | A kind of direct current based on LC concussions cut-offs system |
-
2017
- 2017-09-06 CN CN201721137979.2U patent/CN207200269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394756A (en) * | 2017-09-06 | 2017-11-24 | 安徽徽电科技股份有限公司 | A kind of direct current based on LC concussions cut-offs system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 |