CN107317317A - A kind of arc extinguishing device for switch - Google Patents
A kind of arc extinguishing device for switch Download PDFInfo
- Publication number
- CN107317317A CN107317317A CN201710529924.4A CN201710529924A CN107317317A CN 107317317 A CN107317317 A CN 107317317A CN 201710529924 A CN201710529924 A CN 201710529924A CN 107317317 A CN107317317 A CN 107317317A
- Authority
- CN
- China
- Prior art keywords
- wire
- switch
- voltage
- phase fast
- fast chopper
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
- H02H9/007—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions avoiding or damping oscillations, e.g. fenoresonance or travelling waves
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/08—Limitation or suppression of earth fault currents, e.g. Petersen coil
Abstract
The invention discloses a kind of arc extinguishing device for switch, provided with three wall bushings on switch cabinet inwall, the cabinet inner panel of the wall bushing both sides is provided with three voltage sensors；Above-mentioned voltage sensor is respectively connected with sleeve pipe by wire, and sleeve pipe is respectively connecting to voltage transformer, on overvoltage protection device by wire；Above-mentioned voltage sensor is connected on single-phase fast chopper by wire, and single-phase fast chopper is connected with current transformer by earthing bar；The present invention replaces the high-voltage and current-limitation fuse and high-pressure vacuum contactor of original arc-extinguishing harmonic-eliminating cabinet using single-phase fast chopper, realizes the big rated current of switch arc suppression；The present invention sets microcomputerized controller, and integrated controller is connected with current transformer, detects line current by line current transformer, is conducive to the performance of protection device function.
Description
Technical field
The invention belongs to power system extinguishing arc, harmonic elimination technical field, and in particular to a kind of arc extinguishing device for switch.
Background technology
In power system, in order to which system safety operation and power supply are reliable, during 3~35kV of overwhelming majority power distribution network is used
Property point not direct grounding way, when occurring single-phase earthing, flow through earth point is typically tens amperes of capacity current, this
Electric arc is not enough to stable burning, but forms intermittent electric arc off and on, and this will cause shaking for system inductance capacitor loop
Swing, cause arcing ground, system is in arc grounding over-voltage state.With widely using for solid insulation cable run, due to
The build-up effect that solid insulation punctures, internally overvoltage, particularly power network occur what is produced during single-phase intermittent arc earthing
The peak value of arc grounding over-voltage and the ferro-resonance over-voltage that excites therefrom up to 3.5 times of phase voltage.In such mistake
Under voltage continuous action, the accumulation of solid insulation certainly will be caused to damage, mutually form insulation weak link sound, and then develop
For phase fault accident, or even initiation cascading trip accident.
To solve the arc grounding over-voltage produced and the ferromagnetic resonance excited therefrom during single-phase intermittent arc earthing
Overvoltage typically installs extinguishing arc and overvoltage equipment in systems up to the peak value of 3.5 times of phase voltage, of the prior art to disappear
Arc and overvoltage equipment by three phase combined over-voltage protector, can the high-voltage alternating contactor of individual-phase control, microcomputerized controller,
High-voltage and current-limitation fuse and nonlinear resistance and voltage transformer composition.It is excessively electric that once single-phase intermittent arc earthing occurs for system
Pressure, microcomputerized controller immediately discriminating fault types with it is separate, and send action command to the high-voltage alternating contactor of failure phase, height
Pressure A.C. contactor completes feed motion in 40ms, and arc grounding is converted into metallic earthing therewith, and arc grounding is excessively electric
Pressure disappears；But the weak point of the extinguishing arc and overvoltage equipment is after certain phase high-voltage alternating contactor combined floodgate or is the failure to
In time reset high-voltage alternating contactor separating brake, now due to cabinet outside other one mutually there occurs that ground connection has triggered short trouble,
High-voltage alternating contactor does not have connecting-disconnecting function, can only cut off short trouble by high-voltage and current-limitation fuse, but high-voltage and current-limitation
Fuse is cut-off after short trouble, it is necessary to re-replace to put into operation again, so not only increases working strength, and also delay is thrown
Fortune；In addition, the presence of fuse, limits the size that equipment flows through ground connection.The problem of in order to solve presently, there are, now provide one
The scheme of kind.
Application number 200910116099.0 discloses a kind of handcart-type switch arc suppression device, including shell, and dividing plate encloses shell
Into closing space by function be divided into bus-bar room, control room, circuit breaker cart room and voltage mutual inducer trolley room, circuit breaker cart
Voltage transformer provided with built-in fuse in indoor setting vacuum circuit breaker, voltage mutual inducer trolley room.Application number
2009201804211 disclose a kind of single-phase grounding comprehensive protecting device of electric network, including cabinet shell, the envelope that metal partion (metp) surrounds cabinet shell
Close space and be divided into main bus-bar room, earthing switch room, voltage transformer room and secondary meter room, described secondary meter room by function
Interior setting microcomputer integrated controller, microcomputer integrated controller is connected by secondary cable with circuit zero sequence current mutual inductor, circuit
Zero sequence current mutual inductor is arranged in line switching cabinet, and the secondary voltage signal needed for microcomputer integrated controller is by voltage transformer
Room is introduced by aviation plug.Scheme disclosed above exists following not enough：The rated current used is small, the fuse and list used
Mutually ground connection can not meet needs.
The content of the invention
It is an object of the invention to provide a kind of arc extinguishing device for switch.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of arc extinguishing device for switch, it is characterised in that including the voltmeter, indicator lamp, electricity installed in switch cabinet top
Flow table, microcomputerized controller, electrification display；
Provided with three wall bushings on switch cabinet inwall, the cabinet inner panel of the wall bushing both sides is provided with three electricity
Pressure sensor；Above-mentioned voltage sensor is respectively connected with sleeve pipe by wire, sleeve pipe by wire be respectively connecting to voltage transformer,
On overvoltage protection device；Above-mentioned voltage sensor is connected on single-phase fast chopper by wire, single-phase fast chopper
Current transformer is connected with by earthing bar；
Power distribution network connects upper static contact by wire, and upper static contact is fitted with moving contact, upper moving contact by winding displacement according to
Secondary connection earthed switch, lower moving contact, lower moving contact are fitted with lower static contact；Lower static contact is connected to Current Mutual Inductance by wire
Device；Power distribution network connects single-phase fast chopper and overvoltage protection device by wire again, and single-phase fast chopper accesses to electricity again
Press transformer.
Beneficial effects of the present invention：The present invention replaces original high-voltage and current-limitation fuse and height using single-phase fast chopper
Vacuum contactor is pressed, the big rated current of switch arc suppression is realized；The present invention set microcomputerized controller, and by integrated controller with
Current transformer is connected, and is detected line current by line current transformer, is conducive to the performance of protection device function.The present invention
Intelligent switch extinguishing arc and overvoltage equipment, the signal provided according to voltage transformer come judge that failure is separate and fault type simultaneously
It has been shown that, quick action, the problems such as efficiently solving arc-extinguishing harmonic-eliminating in overvoltage equipment reduces nonlinear resistance and high pressure limit
The components such as flow fuse, simple in construction, performance is stable, more efficiently can quickly eliminate three-phase power grid non_direct ground system
Infringement of all kinds overvoltage of uniting to power network, improves safe operation of electric network reliability.
Brief description of the drawings
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is a kind of arc extinguishing device for switch front view of the invention；
Fig. 2 is a kind of arc extinguishing device for switch schematic internal view of the invention；
Fig. 3 is a kind of arc extinguishing device for switch circuit theory diagrams of the invention.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is only a part of embodiment of the invention to apply example, rather than whole embodiments.Based on the embodiment in the present invention, this area is general
All other embodiment that logical technical staff is obtained under the premise of creative work is not made, belongs to what the present invention was protected
Scope.
A kind of arc extinguishing device for switch, including the voltmeter 1 installed in switch cabinet top, indicator lamp 2, ammeter 3, microcomputer
Controller 4, electrification display 5, and simulation board 6, observation window 7 and nameplate 8 installed in switch cabinet bottom；
Provided with three wall bushings 9 on switch cabinet inwall, the cabinet inner panel of the both sides of wall bushing 9 is provided with three
Voltage sensor 10；Above-mentioned voltage sensor 10 is respectively connected with sleeve pipe 11 by wire, and sleeve pipe 11 is respectively connecting to by wire
On voltage transformer 13, overvoltage protection device 15；Above-mentioned voltage sensor 10 is connected to single-phase fast chopper by wire
On 16, single-phase fast chopper 16 is connected with current transformer 14 by earthing bar 12；
Power distribution network 18 connects upper static contact by wire, and upper static contact is fitted with moving contact 19, and upper moving contact 19 passes through
Winding displacement is sequentially connected earthed switch 20, lower moving contact, and lower moving contact is fitted with lower static contact 21；Lower static contact 21 is connected by wire
It is connected to current transformer 14；Power distribution network 18 connects single-phase fast chopper 16 and overvoltage protection device 25 by wire again, single-phase
Fast chopper accesses to voltage transformer 13 again.
The present invention replaces original high-voltage and current-limitation fuse and high-pressure vacuum contactor using single-phase fast chopper, realizes
The big rated current of switch arc suppression；The present invention sets microcomputerized controller, and integrated controller is connected with current transformer, leads to
Line current transformer detection line current is crossed, is conducive to the performance of protection device function.The present invention intelligent switch extinguishing arc and
Overvoltage equipment, the signal provided according to voltage transformer judges that failure is separate and fault type and shows, quick action,
The problems such as efficiently solving arc-extinguishing harmonic-eliminating in overvoltage equipment, reduces the components such as nonlinear resistance and high-voltage and current-limitation fuse,
Simple in construction, performance is stable, more efficiently can quickly eliminate three-phase power grid non-direct ground system all kinds excessively electric
The infringement to power network is pressed, safe operation of electric network reliability is improved.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details of narration, it is only described embodiment that the invention is not limited yet.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (1)
1. a kind of arc extinguishing device for switch, it is characterised in that including the voltmeter, indicator lamp, electric current installed in switch cabinet top
Table, microcomputerized controller, electrification display；
Provided with three wall bushings on switch cabinet inwall, the cabinet inner panel of the wall bushing both sides is passed provided with three voltages
Sensor；Above-mentioned voltage sensor is respectively connected with sleeve pipe by wire, and sleeve pipe is respectively connecting to voltage transformer by wire, excessively electric
Press on protector；Above-mentioned voltage sensor is connected on single-phase fast chopper by wire, and single-phase fast chopper passes through
Earthing bar is connected with current transformer；
Power distribution network connects upper static contact by wire, and upper static contact is fitted with moving contact, and upper moving contact is connected successively by winding displacement
Earthed switch, lower moving contact are connect, lower moving contact is fitted with lower static contact；Lower static contact is connected to current transformer by wire；
Power distribution network connects single-phase fast chopper and overvoltage protection device by wire again, and it is mutual that single-phase fast chopper accesses to voltage again
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710529924.4A CN107317317A (en) | 2017-07-03 | 2017-07-03 | A kind of arc extinguishing device for switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710529924.4A CN107317317A (en) | 2017-07-03 | 2017-07-03 | A kind of arc extinguishing device for switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107317317A true CN107317317A (en) | 2017-11-03 |
Family
ID=60179893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710529924.4A Pending CN107317317A (en) | 2017-07-03 | 2017-07-03 | A kind of arc extinguishing device for switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317317A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666581A1 (en) * | 1993-02-22 | 1995-08-09 | Tai-Her Yang | D.C. cut-off extinguishing ARC circuit |
| CN101477916A (en) * | 2009-01-16 | 2009-07-08 | 郭耀华 | Fixed arc extinguishing device for switch |
| CN201294378Y (en) * | 2008-11-07 | 2009-08-19 | 安徽徽电科技股份有限公司 | Switch arc-extinguishing and over-voltage protection |
| CN101557083A (en) * | 2009-01-20 | 2009-10-14 | 上海合凯电力保护设备有限公司 | Handcart-type switch arc suppression device |
| CN202872357U (en) * | 2012-10-16 | 2013-04-10 | 安徽中瑞电气技术有限公司 | Optimized comprehensive protection device of power grid |
| CN104868461A (en) * | 2015-06-01 | 2015-08-26 | 安徽禄讯电子科技有限公司 | Intelligent switch arc-extinguishing and overvoltage-protecting device |
| CN106877307A (en) * | 2017-03-08 | 2017-06-20 | 安徽天电气技术股份有限公司 | Sofe Switch arc-extinction device |
-
2017
- 2017-07-03 CN CN201710529924.4A patent/CN107317317A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0666581A1 (en) * | 1993-02-22 | 1995-08-09 | Tai-Her Yang | D.C. cut-off extinguishing ARC circuit |
| CN201294378Y (en) * | 2008-11-07 | 2009-08-19 | 安徽徽电科技股份有限公司 | Switch arc-extinguishing and over-voltage protection |
| CN101477916A (en) * | 2009-01-16 | 2009-07-08 | 郭耀华 | Fixed arc extinguishing device for switch |
| CN101557083A (en) * | 2009-01-20 | 2009-10-14 | 上海合凯电力保护设备有限公司 | Handcart-type switch arc suppression device |
| CN202872357U (en) * | 2012-10-16 | 2013-04-10 | 安徽中瑞电气技术有限公司 | Optimized comprehensive protection device of power grid |
| CN104868461A (en) * | 2015-06-01 | 2015-08-26 | 安徽禄讯电子科技有限公司 | Intelligent switch arc-extinguishing and overvoltage-protecting device |
| CN106877307A (en) * | 2017-03-08 | 2017-06-20 | 安徽天电气技术股份有限公司 | Sofe Switch arc-extinction device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |