CN108447748A - It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods - Google Patents
It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods Download PDFInfo
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- CN108447748A CN108447748A CN201810243961.3A CN201810243961A CN108447748A CN 108447748 A CN108447748 A CN 108447748A CN 201810243961 A CN201810243961 A CN 201810243961A CN 108447748 A CN108447748 A CN 108447748A
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- Prior art keywords
- vacuum interrupter
- rotating excitation
- excitation field
- arc
- coil unit
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a kind of using applying the vacuum interrupter of rotating excitation field outside and its cut-offfing direct methods, belongs to electric power system circuit breaker field；Vacuum interrupter using rotating excitation field includes vacuum interrupter and several external coil units；Cutoff method：1) when failure occurs, vacuum arc-extinguishing chamber contact is opened, and generates electric arc；2) vacuum interrupter disposed outside it is several to coil in lead to the dephased electric current of tool, generate rotating excitation field；3) electric arc moves under rotating excitation field effect, and arc voltage rises to system voltage, and arc extinction cut-offs to realize.
Description
Technical field
The present invention relates to electric power system circuit breaker technical fields, and in particular to a kind of to be gone out using the vacuum for applying rotating excitation field outside
Arc chamber and its cut-off direct methods.
Background technology
1. low-voltage direct electric system is drawn in rail traffics such as shipboard power system, telecommunication apparatus distribution system, subways
The direct-current grid field that distribution system and regenerative resource are constituted is in an increasingly wide range of applications.Low-voltage direct breaker is
The key equipment of the safe operation of low-voltage direct power grid and protection, performance are all non-to the formulation of system protection strategy and Project Realization
Chang Guanjian.But since DC current does not have a natural zero-crossing point, in interrupting process, blow-out, which relies primarily on, improves arc voltage limitation
Electric current is realized.The current limiting technique of comparative maturity has the nearly cathode drop for 1) utilizing electric arc in low-voltage direct breaker at present, adopts
Electric arc is divided into series connection short arc with metal grid etc., improves arc voltage；2) make electric arc horizontal elongation using magnetic field；3) increase
Gas medium pressure or arc blow-out in arc-chutes.Currently, low-voltage direct, which is cut-off, mainly uses air-break, volume is larger, opens
The disconnected time is longer.
2. vacuum circuit breaker have many advantages, such as it is small, safeguard simple, reliability it is high and on external environment influence it is small
Middle pressure exchange field is widely used.But arc voltage is smaller when vacuum circuit breaker blow-out, to limit it low
Straightening stream cut-offs the application in field.
As from the foregoing, on the one hand, low-voltage direct cut-offs field has higher requirement, another party to the performance of breaker
Face, vacuum circuit breaker have a series of excellent performances.But wants to cut-off vacuum circuit breaker applied to low-voltage direct, need to adopt
Vacuum arc voltage, impressed current zero passage are improved with effective technological means.
Invention content
In order to overcome the above-mentioned problems of the prior art, the purpose of the present invention is to provide a kind of use to apply rotary magnetic outside
Vacuum interrupter and its cut-off direct methods, vacuum interrupter can be cut-off applied to low-voltage direct, improve vacuum electric
Arc voltage limits electric current, and realization is fast and reliable to cut-off, safeguards system safe operation.
In order to achieve the above objectives, the technical solution adopted by the present invention is：
It is a kind of to use the vacuum interrupter for applying rotating excitation field outside, by vacuum interrupter 1 and external generation device of rotating magnetic field
Composition, the generation device of rotating magnetic field is mainly by several coil lists to being spatially symmetrically arranged in around vacuum interrupter
Member 2 forms, and passes through the electric current i with certain phase difference in each pair of coil unit 21、i2…in。
Further, the arc column axis of electric arc when the direction for the rotating excitation field that external generation device of rotating magnetic field generates and arcing
Line direction is not parallel, and rotating excitation field has the component perpendicular to arc column axis.
Further, each pair of coil unit 2 is connected in series by two opposite coils, and each coil is insulated coat of paint by outsourcing
Good conductor such as copper wire sandwich wound form.
Further, in each pair of coil unit by electric current be respectively i1、i2…in, i1、i2…inAmplitude is arbitrary, can be with
It is equal to wait.
Further, in each pair of coil unit by electric current i1、i2…inFrequency f1、f2…fnIt arbitrarily, can be equal
It can not also wait.
Further, in each pair of coil unit by electric current i1、i2…inInitial phase θ1、θ2…θnIt can differ and appoint
The meaning number of degrees.
Further, the use apply outside rotating excitation field vacuum interrupter cooperation operating mechanism can be used as low-pressure direct
It flows breaker to use, is divided into three steps and cut-offs：When low-voltage direct-current system failure occurs, operating mechanism action, 1 contact of vacuum interrupter
It opens, generates electric arc；Pass through the electric current with certain phase difference respectively in the coil unit 2 arranged around vacuum interrupter 1
i1、i2…in, transverse rotating magnetic field is generated inside vacuum interrupter 1；Electric arc moves under rotating excitation field effect, arc voltage
Rise, realization is cut-off.
Compared with prior art, advantage of the invention is that：
It proposes a kind of new method, effectively improves vacuum arc voltage, vacuum interrupter is cut-off applied to low-voltage direct, tie up
Shield is simple, good insulation preformance, and reliability is high, and switch off time is short.
Description of the drawings
Fig. 1 is provided by the invention a kind of using the vacuum interrupter structure chart for applying rotating excitation field outside.
Fig. 2 is using vacuum arc voltage after the present invention and electric current exemplary waveform diagram.
Wherein：1 is arc voltage waveform figure, and 2 be current waveform figure.t0Moment vacuum arc-extinguishing chamber contact is opened, and starts to fire
Arc；t1Moment puts into transverse rotating magnetic field.
Specific implementation mode
The present invention is described in further details below in conjunction with the accompanying drawings：
A kind of use provided by the invention applies the vacuum interrupter structure chart of rotating excitation field as shown in Figure 1, including mainly outside：
Vacuum interrupter 1 and external generation device of rotating magnetic field.External generation device of rotating magnetic field is made of coil unit 2 n, each pair of
Coil unit 2 is composed in series by two opposite coils.N is symmetrically arranged in outside vacuum interrupter 1 coil unit 2, each pair of
Alive i in coil unit 21、i2…in, the amplitude of electric current is arbitrary, and frequency is arbitrary, initial phase θ1、θ2…θ3It can differ
The arbitrary number of degrees.
The vacuum interrupter cooperation operating mechanism that rotating excitation field is applied in the use outside can be used as low-voltage direct breaker
It uses, is cut-off as shown in Fig. 2, being divided into three steps：t0Moment operating mechanism acts, and 1 contact of vacuum interrupter is opened, and generates electric arc,
Arc voltage is stablized in 20V or so；t1At the moment, external n is to passing through the electric current i with certain phase difference in coil unit 21、i2…
in, transverse rotating magnetic field is generated inside vacuum interrupter 1；Electric arc transverse rotating magnetic field effect under move, arc voltage by
20V originally or so rises to 70-80V, is more than system voltage, forces loop current zero passage, arc extinction.
Claims (7)
1. a kind of using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：By vacuum interrupter (1) and external rotary magnetic
Field generating means composition, the external generation device of rotating magnetic field is mainly by n to being spatially symmetrically arranged in vacuum interrupter (1)
Coil unit (2) composition of surrounding；Pass through the electric current i with certain phase difference in each pair of coil unit (2)1、i2…in。
2. according to claim 1 using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：The external rotation
The arc column axis direction of electric arc is not parallel when the direction for the rotating excitation field that field generator for magnetic generates and arcing, and rotating excitation field has vertical
Directly in the component of arc column axis.
3. according to claim 1 using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：Each pair of coil unit
(2) it is connected in series by two opposite coils, each coil is formed by the conductor sandwich wound of outsourcing insulation coat of paint.
4. according to claim 1 using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：Vacuum interrupter
(1) around arrange each pair of coil unit (2) in by electric current be respectively i1、i2…in, the amplitude of electric current is arbitrary, it is equal or
Differ.
5. according to claim 4 using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：Each pair of coil unit
(2) in respectively by the arbitrary electric current i of amplitude1、i2…in, power frequency f1、f2…fnArbitrarily, equal or different.
6. according to claim 4 using the vacuum interrupter for applying rotating excitation field outside, it is characterised in that：Each pair of coil unit
(2) in respectively by amplitude is arbitrary, the arbitrary electric current i of frequency1、i2…in, initial phase θ1、θ2…θnDiffer arbitrary degree
Number.
7. claim 1 to 6 any one of them is using the direct methods that cut-off for the vacuum interrupter for applying rotating excitation field outside, special
Sign is：The vacuum interrupter coordinates operating mechanism, can be used as low-voltage direct breaker；Low-voltage direct-current system failure
When generation, operating mechanism action, vacuum interrupter (1) contact is opened, and electric arc is generated；It is arranged around vacuum interrupter (1)
Respectively by the electric current with certain phase difference in coil unit (2), coil unit (2) will produce inside vacuum interrupter (1)
Raw transverse rotating magnetic field；Electric arc will move under transverse rotating magnetic field effect, and arc voltage rises, when more than system voltage,
Current over-zero, arc extinction, to realize that direct current is cut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810243961.3A CN108447748A (en) | 2018-03-23 | 2018-03-23 | It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810243961.3A CN108447748A (en) | 2018-03-23 | 2018-03-23 | It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods |
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| Publication Number | Publication Date |
|---|---|
| CN108447748A true CN108447748A (en) | 2018-08-24 |
Family
ID=63196737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810243961.3A Pending CN108447748A (en) | 2018-03-23 | 2018-03-23 | It is a kind of to use the vacuum interrupter for applying rotating excitation field outside and its cut-off direct methods |
Country Status (1)
| Country | Link |
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| CN (1) | CN108447748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420443A (en) * | 2020-12-07 | 2021-02-26 | 南京南瑞继保电气有限公司 | Device for increasing switch arc voltage and control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3518420A1 (en) * | 1984-05-22 | 1985-11-28 | Mitsubishi Denki K.K., Tokio/Tokyo | SWITCHING DEVICE |
| US20110186549A1 (en) * | 2010-02-02 | 2011-08-04 | Beijing Orient Vacuum Electric Co., Ltd | Vacuum switch tube |
| CN102496518A (en) * | 2011-12-09 | 2012-06-13 | 沈阳工业大学 | Disk-type gyromagnetic vacuum arc extinguish chamber |
| CN105551881A (en) * | 2016-01-11 | 2016-05-04 | 许继集团有限公司 | Vacuum arc-extinguishing chamber, vacuum arc-extinguishing chamber contacts and direct current vacuum circuit breaker |
| CN106443048A (en) * | 2016-11-29 | 2017-02-22 | 深圳供电局有限公司 | Device for detecting arc rotation speed of transverse magnetic field vacuum switch |
| CN107342186A (en) * | 2017-07-20 | 2017-11-10 | 中国电力科学研究院 | A kind of adjustable rotary magnetic field vacuum interrupter |
| CN107633978A (en) * | 2017-11-20 | 2018-01-26 | 天津平高智能电气有限公司 | A kind of Axial Magnetic Field Vacuum Interrupters with Cup Type contact |
-
2018
- 2018-03-23 CN CN201810243961.3A patent/CN108447748A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3518420A1 (en) * | 1984-05-22 | 1985-11-28 | Mitsubishi Denki K.K., Tokio/Tokyo | SWITCHING DEVICE |
| US20110186549A1 (en) * | 2010-02-02 | 2011-08-04 | Beijing Orient Vacuum Electric Co., Ltd | Vacuum switch tube |
| CN102496518A (en) * | 2011-12-09 | 2012-06-13 | 沈阳工业大学 | Disk-type gyromagnetic vacuum arc extinguish chamber |
| CN105551881A (en) * | 2016-01-11 | 2016-05-04 | 许继集团有限公司 | Vacuum arc-extinguishing chamber, vacuum arc-extinguishing chamber contacts and direct current vacuum circuit breaker |
| CN106443048A (en) * | 2016-11-29 | 2017-02-22 | 深圳供电局有限公司 | Device for detecting arc rotation speed of transverse magnetic field vacuum switch |
| CN107342186A (en) * | 2017-07-20 | 2017-11-10 | 中国电力科学研究院 | A kind of adjustable rotary magnetic field vacuum interrupter |
| CN107633978A (en) * | 2017-11-20 | 2018-01-26 | 天津平高智能电气有限公司 | A kind of Axial Magnetic Field Vacuum Interrupters with Cup Type contact |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112420443A (en) * | 2020-12-07 | 2021-02-26 | 南京南瑞继保电气有限公司 | Device for increasing switch arc voltage and control method thereof |
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Application publication date: 20180824 |
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