CN1894762B - Switchgear for medium-voltage range and high-voltage range - Google Patents
Switchgear for medium-voltage range and high-voltage range Download PDFInfo
- Publication number
- CN1894762B CN1894762B CN200480037506.4A CN200480037506A CN1894762B CN 1894762 B CN1894762 B CN 1894762B CN 200480037506 A CN200480037506 A CN 200480037506A CN 1894762 B CN1894762 B CN 1894762B
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- CN
- China
- Prior art keywords
- switchgear
- switch
- voltage range
- switches
- time window
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
Abstract
The invention relates to a switchgear for the medium-voltage range and the high-voltage range, comprising power switches and/or load interrupter switches, according to patent claim 1. The aim of the invention is to better ensure the inverse ignition freedom and to achieve the effective division of the voltage in the switching process. To this end, two switches (1) are mounted in series on each phase, which can be controlled in such a way that they are co-ordinated with each other in a small window of time (dt).
Description
Technical field
The present invention relates to a kind of switchgear for voltage range and high voltage range.
The art is relevant to middle voltage switch equipment, but does not get rid of high-voltage switch equipment, particularly is applicable to the vacuum circuit breaker of the frequent switch of capacitor group.
Background technology
Except disconnecting the filling SF of all right interrupting short circuit capacitive current
6circuit-breaker and vacuum circuit breaker or the dedicated capacitor switchgear that can only deal with capacitive current be well known.High recovery voltage occurs in electric power supply system and breaks charging current of condenser and hidden inherently arc reignition while striding across switch gap dangerous.Consequent overvoltage meeting destroys capacitor or electric power supply system.The IEC 62271-100 come into effect from calendar year 2001 than before in the possibility of having considered to a greater extent to occur above situation, on the low possibility of arc reignition and low-down possibility basis, circuit-breaker is classified.In the test of corresponding types, arc reignition may not occur.This has just caused the strict demand to the circuit-breaker characteristic.
Under higher voltage, be mainly 36KV and higher power supply electrical level in this case, guarantee not occur arc reignition and become more difficult.This is because the vacuum switch principle itself has comprised the basic dependence of contact separation to the dielectric strength of arrangement.Therefore higher voltage breakdown can only widen contact separation by the hypergeometric example and obtains.In addition, the stochastic behaviour of vacuum breakdown is another factor, and its puncture voltage changes with surface texture to a great extent.
Disclose respectively switch gear room in parallel by US 3839612 and US 3708638, these switch gear rooms interconnect with a current potential at least respectively, have inductance type or capacitive transducer tap, to be compensated electric current for this reason.The series circuit of two vacuum interrupter chambers is disclosed by US 3813605.
Summary of the invention
Therefore the present invention is based on following purpose: the switchgear of this general type improved, with the degree of freedom of guaranteeing arc reignition, is limited in one preferably in scope, and in switching process effective dividing potential drop.
In the situation that the switchgear of this general type is realized by following technical characterictic according to target of the present invention.
Switchgear for voltage range and high voltage range, there is circuit-breaker and/or load break-and-make switch, wherein two independently but the switch of same kind in each stage, be connected in series, and can be relative to one another by Collaborative Control in a short time window dt, and be provided with the electrode that is connected and is used as antenna with these two switches conductive between the switch gap of these two switches, it is in fact symmetrical making the capacity cell obtained.
Present idea is at each stage two vacuum chambers of switch sequentially.At first, this carries out dividing potential drop between a plurality of switch gaps, and to above-mentioned basic dependence advantageous use in addition.On the other hand, vacuum breakdown is a process very fast, although need to grow the boot time of any in some situation.When reality occurs when electric discharge occurs for the first time to occur that in second switch gap the probability of a breakdown process is very low.Due in the situation that a gap partial discharge only has parasitic capacitance to discharge, the possibility that therefore before thoroughly puncturing generation, gap is reinforced again is very high.
The idea of two vacuum chambers of sequence switch itself is well-known, but by two independently but to belong to same type and its connection and disconnecting apparatus be to realize it being a specified features with the circuit-breaker of electric and/or mechanical system coupling.The special mechanical couplings of declutcher control lever has realized being less than the synchronous of 3ms.This also can so that the voltage applied during switching in fact by dividing potential drop.
A favourable improvement defines switchgear and mechanically is coupled.This provides good switch net synchronization capability.
As a kind of alternative to it, also can realize by the driver with electric means coupled switch equipment suitable synchronous.
In order to make switching characteristic mechanically and/or electricly above to be complementary with each characteristic respectively, time window dt can pass through the adjusting device change.
In a favourable improvement, best time window dt is less than or equal to 3 milliseconds.
Best value appears at the dt=1 millisecond.
Favourable improvement defines conduction, and to be connected to two antennas on switch be to be arranged between the switch gap of these two switches, and it is in fact symmetrical that this mode makes resulting capacitive element.This balanced measure has been realized the best dividing potential drop between two switch gaps.But this measure is simple very effective, has represented a kind of particularly advantageous advantageous embodiment according to switchgear of the present invention.
It is same type physically that an other improvement defines the switch be connected in series.As mentioned above, this is another kind of favourable measure for the dividing potential drop in active balance switching over process.
Tool is advantageous in addition, and these two switches are vacuum circuit breakers.
On structure, in favourable improvement, two switches are arranged on a substrate, are arranged on one with being connected of bus and/or cable plug and/or transducer and are filled with SF
6, in nitrogen or the hermetically sealed of air as insulating gas.Like this, the on-off principle obtained according to the present invention can be integrated in conventional switchgear type.
The accompanying drawing explanation
The present invention will be described in more detail below, and by shown in the drawings, in figure:
Fig. 1: showing a per stage only has the switchgear of two vacuum circuit breakers.
Fig. 2: show a kind of equivalent electric circuit.
Embodiment
Two circuit-breakers 1 that also are used as output or feed panel VD4X type are arranged on a public substrate 2 stackedly.Described substrate is arranged on a pressure casing front with air tight manner.With being connected of bus, cable plug and transducer, be arranged in a known way in described airtight zone.The literature has been described an example be used in airtight ZX1.2 or ZX2 equipment.
The input and output coil that is used for the electric operation of driver is connected in series or in parallel.Because the time accuracy connected is not particular importance, input coil is electrical couplings.If do not connect one of in switch above, will generate a defect message.Switch just can be disconnected safely again.
On the contrary, in order to guarantee to carry out dividing potential drop between two vacuum chambers, opening operation must carry out basically simultaneously.Due to the slope of return voltage after current vanishes, need to be less than the synchronous of 3ms.In this case, this can realize by the switch 1 with identical the mechanical couplings 2 by declutcher control lever 3 on the one hand.Rigidity coupling between two declutcher control levers is variable, and allows disconnection times is regulated.So just reached and be less than the synchronous of 3ms, preferably 1ms.
An electrode 4 can be set carry out unified dividing potential drop between switch gap.In the situation that current, electrode has increased the coupling between two vacuum chambers.The position of these electrodes and shape be by the determining positions in switch cabin, and especially they are over the ground or to the electric capacity of high-voltage potential.
Panel with a capacitor switch can be arranged in rows by the Application standard element in the requirement according to conventional current output or feed panel, the especially connection each other for panel, and retained bus equipment.Can not be as the circuit of identifying in Fig. 1 in order to clearly demonstrate, Fig. 2 shows the equivalent electric circuit of whole switch gap, has represented all three phases.
Output place that switch disconnector 10 is arranged on from L1, and position 11 has formed a three-point switch form.
Sequentially following two circuit-breakers 1 thereafter.An electrode 4 that can effectively be used as antenna is set between each switch gap.Formed capacity cell between the respective switch gap of described electrode 4 and respective switch 1.Due to symmetry physically, this also can obviously find out from Fig. 1, and they are also symmetrical, and contributes to distribute in the symmetry that the switching over stage shows as two electric conversion voltages between switch to have a mind to.
Claims (8)
1. for the switchgear of voltage range and high voltage range, there is circuit-breaker and/or load break-and-make switch, wherein two independently but the switch of same kind (1) in each stage, be connected in series, and can be relative to one another by Collaborative Control in a short time window dt, and be provided with the electrode (4) that is connected and is used as antenna with these two switches conductive between the switch gap of these two switches, it is in fact symmetrical making the capacity cell obtained, and the switch be connected in series (1) has the structure of same type.
2. according to the switchgear of claim 1, it is characterized in that, the drive unit of switch (1) is mechanical couplings.
3. according to the switchgear of claim 1, it is characterized in that, the drive unit of switch (1) is electrical couplings.
4. according to the switchgear of claim 2 or 3, it is characterized in that, time window dt can change by adjusting device.
5. according to the switchgear of claim 2 or 3, it is characterized in that time window dt≤3 millisecond.
6. according to the switchgear of claim 5, it is characterized in that time window dt=1 millisecond.
7. according to the switchgear of any one in claims 1 to 3, it is characterized in that, described two switches (1) are vacuum circuit breakers.
8. according to the switchgear of any one in claims 1 to 3, it is characterized in that, described two switches (1) are arranged on a common substrate, and are arranged on one with being connected of bus and/or cable plug and/or transducer and are filled with SF
6, N
2or in the hermetically sealed of air as insulating gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10355568.4 | 2003-11-27 | ||
| DE2003155568 DE10355568B4 (en) | 2003-11-27 | 2003-11-27 | Switchgear for the medium and high voltage range |
| PCT/EP2004/013100 WO2005062327A1 (en) | 2003-11-27 | 2004-11-18 | Switchgear for the medium-voltage range and high-voltage range |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1894762A CN1894762A (en) | 2007-01-10 |
| CN1894762B true CN1894762B (en) | 2013-12-18 |
Family
ID=34625326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480037506.4A Active CN1894762B (en) | 2003-11-27 | 2004-11-18 | Switchgear for medium-voltage range and high-voltage range |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1690276B1 (en) |
| CN (1) | CN1894762B (en) |
| DE (1) | DE10355568B4 (en) |
| ES (1) | ES2495441T3 (en) |
| WO (1) | WO2005062327A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813506A (en) * | 1973-04-12 | 1974-05-28 | Gen Electric | Vacuum-type circuit breaker with improved ability to interrupt capacitance currents |
| US3839612A (en) * | 1973-08-08 | 1974-10-01 | Gen Electric | Vacuum-type circuit breaker comprising series-connected vacuum interrupters within a grounded tank |
| DE3901712A1 (en) * | 1989-01-21 | 1990-08-02 | Sachsenwerk Ag | Vacuum switch |
| EP0542637A1 (en) * | 1991-10-17 | 1993-05-19 | Schneider Electric Sa | Electrical circuit breaker with two vacuum switch tubes in series |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813605A (en) | 1970-11-30 | 1974-05-28 | Massachusetts Inst Technology | Bistable optical device |
| US3708638A (en) | 1970-12-14 | 1973-01-02 | Gen Electric | Vacuum type electric circuit breaker |
| DE3300979A1 (en) * | 1983-01-12 | 1984-07-12 | Siemens AG, 1000 Berlin und 8000 München | VACUUM SWITCH WITH TWO SWITCHING TUBES PER POL |
| DE19958646C2 (en) * | 1999-12-06 | 2001-12-06 | Abb T & D Tech Ltd | Hybrid circuit breakers |
| DE10157140B4 (en) * | 2001-11-21 | 2011-02-24 | Abb Ag | hybrid switch |
-
2003
- 2003-11-27 DE DE2003155568 patent/DE10355568B4/en not_active Expired - Lifetime
-
2004
- 2004-11-18 EP EP04820595.9A patent/EP1690276B1/en not_active Revoked
- 2004-11-18 WO PCT/EP2004/013100 patent/WO2005062327A1/en active Application Filing
- 2004-11-18 CN CN200480037506.4A patent/CN1894762B/en active Active
- 2004-11-18 ES ES04820595.9T patent/ES2495441T3/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813506A (en) * | 1973-04-12 | 1974-05-28 | Gen Electric | Vacuum-type circuit breaker with improved ability to interrupt capacitance currents |
| US3839612A (en) * | 1973-08-08 | 1974-10-01 | Gen Electric | Vacuum-type circuit breaker comprising series-connected vacuum interrupters within a grounded tank |
| DE3901712A1 (en) * | 1989-01-21 | 1990-08-02 | Sachsenwerk Ag | Vacuum switch |
| EP0542637A1 (en) * | 1991-10-17 | 1993-05-19 | Schneider Electric Sa | Electrical circuit breaker with two vacuum switch tubes in series |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005062327A1 (en) | 2005-07-07 |
| EP1690276A1 (en) | 2006-08-16 |
| DE10355568A1 (en) | 2005-06-30 |
| CN1894762A (en) | 2007-01-10 |
| EP1690276B1 (en) | 2014-06-04 |
| ES2495441T3 (en) | 2014-09-17 |
| DE10355568B4 (en) | 2011-04-07 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20180523 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB Transmit OY |