CN101752799B - Medium-voltage electric distribution cell - Google Patents
Medium-voltage electric distribution cell Download PDFInfo
- Publication number
- CN101752799B CN101752799B CN200910261462.8A CN200910261462A CN101752799B CN 101752799 B CN101752799 B CN 101752799B CN 200910261462 A CN200910261462 A CN 200910261462A CN 101752799 B CN101752799 B CN 101752799B
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- CN
- China
- Prior art keywords
- parts
- circuit
- switchgear house
- box
- voltage
- 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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Links
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 abstract 3
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001074710 Eucalyptus populnea Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
-
- 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
- H01H2033/6668—Operating arrangements with a plurality of interruptible circuit paths in single vacuum chamber
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
-
- 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
- H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
Landscapes
- Gas-Insulated Switchgears (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention relates to a medium-voltage electric distribution cell C, which can be matched between two parts of a circuit, such as a bus-bar and a current for executing the current flow between two parts, the current interruption between two parts, the voltage isolation between two parts and the grounding function of the part of the circuit. The electric distribution cell C is characterized in that the current flow, interruption, voltage isolation and grounding function are executed by at least one vacuum box A, and the cell C also comprises an additional separator (4) arranged in a grounding circuit (3), the separator can add an additional isolation gap I into the grounding circuit (3) at the current flow and current interruption position and eliminate the additional isolation gap I at the voltage isolation position of two parts when one of the parts is grounded. The box A comprises a first fixed contact (7) electrically connected to the bus-bar, a movable contact (8) electrically connected to the cable and a second fixed contact (9) electrically connected to the ground by a change-over switch (4).
Description
Technical field
The present invention relates to medium-voltage distribution room, to perform the function of the ground connection of one of voltage isolation and described circuit part between current interruptions between current flowing between these two parts, these two parts, these two parts respectively between two parts that its design is engaged in circuit.
Background technology
In known switchgear house, vacuum box for performing switch and circuit breaker function, and utilizes air or gas isolated device in most circumstances for performing isolation (disconnection) or grounding function.
These functions can combine in a different manner with practical function unit, perform current interruptions and isolation and grounding function.
Like this, known, functional unit by have perform respectively switch, isolating switch (disconnector), earthed switch function three positions switchgear device formed, or, functional unit is formed by the switch-isolating switch being combined with earthed switch, or functional unit is formed by the isolating switch comprising two positions of ground connection being combined with switch or circuit breaker.Also known, three devices that functional unit performs isolating switch, earthed switch and switching function respectively by combination are formed.
Summary of the invention
The object of this invention is to provide medium-voltage distribution room, it makes at least circuit breaker (switch) and isolating switch function can perform to eliminate the compactedness to a certain degree use of gas being kept simultaneously to switchgear house by vacuum insulation technology.
In order to this object, the object of this invention is to provide a kind of switchgear house of the above-mentioned type, the feature of this switchgear house is, above-mentioned current flowing, interruption and voltage isolation features perform in a vacuum, and it comprises the extra separator be arranged in earthed circuit further, described apparatus design is in earthed circuit, increase extra external series gap at current flowing and current interruptions position and eliminate this extra external series gap when one of above-mentioned part is grounded in voltage isolated location between described two parts.
According to special characteristic, above-mentioned grounding function also performs in a vacuum.
According to special characteristic, this switchgear house comprises the switch (or circuit breaker) of three positions, be respectively wherein electric current flow between the two parts position, wherein electric current is interrupted and the segregate position of voltage and earthing position between the two parts, this switch/circuit breaker is accommodated in vacuum box.
According to special characteristic, this extra separator is realized by breaking technique in atmosphere, in gas, in oil or in a vacuum.
According to another feature, this box comprises housing, the first fixed contact being combined with the Part I being electrically connected to foregoing circuit in this housing, the Part II movable contact being electrically connected to foregoing circuit and be used as floating shield or contact and the second fixed contact electrical ground.
According to another feature, described extra separator comprises can make the second fixed contact ground connection or earth-free switch.
According to another feature, the Part I of foregoing circuit is bus-bar, and foregoing circuit Part II is cable.
According to another feature, the second fixed contact is positioned at the substantial middle place of box.
According to another feature, this room comprises for detecting the device leaked electricity in box.This make it possible to detect vacuum loss, can carry out vacuum level diagnosis or can the loss of compactness of diagnosis box.
According to another feature, these devices comprise and to flow the voltage of the second fixed contact or the device of electric current for continuous measurement.
Accompanying drawing explanation
But other advantage of the present invention and feature will become clearly from the detailed description with reference to the accompanying drawing only provided with exemplary purpose below, wherein:
Fig. 1 is the schematic diagram according to medium-voltage distribution room of the present invention;
Fig. 2-5 with the form of cross sectional view illustrate according to a particular embodiment of the invention be in make position that wherein electric current can flow respectively, disconnect after open position, isolated location and earthing position switchgear house.
Embodiment
In figs. 1-5, medium-voltage distribution room C according to the present invention is illustrated, its design is arranged between bus-bar 1 and cable 2 that (position of Fig. 1 a) or ensure current interruptions or voltage isolation (b) after disconnecting, or cable grounding (position c) to ensure the flowing of the electric current between these two parts.
This room C comprises the circuit 3 of vacuum box A and ground connection T, and this circuit 3 comprises air insulated switch (or change over switch) 4.
This box A hold can take the circuit breaker 5 of three diverse locations, these three positions be allow the operating position (as shown in Figure 2) of operating current flowing, electric current disconnect after open position (Fig. 3), isolated location (Fig. 4) and earthing position (Fig. 5).
Change over switch 4 can take two positions, and (the tie point R of box namely, is wherein electrically grounded to the primary importance e of ground T and between this tie point R and ground T, wherein inserts the position f of an extra external series gap I by the e in Fig. 1, f).
As shown in Figure 2-5, above-mentioned box A comprises the housing 6 being roughly cylindrical shape, this housing fill full vacuum and hold be electrically connected to bus-bar the first fixed contact 7, be electrically connected to the movable contact 8 of electric current and be electrically connected to the second fixed contact 9 of above-mentioned change over switch 4 via above-mentioned tie point R, described change over switch above-mentioned tie point R can be grounding to ground T.
The operation of above-mentioned switchgear house is described below with reference to accompanying drawings.
In position as shown in Figure 2, or operating position, box A is in closed to make operating current to flow.Change over switch 4 is in an open position.In position as shown in Figure 3, the first fixed contact 7 and movable contact 8 by separately and current flowing be therefore interrupted.The disconnection of the circuit that the conversion of (Fig. 1) is corresponding relevant to current interruption from position a to position b.Box A is traditional in the effect of these two positions.Second fixed contact 9 of box A inside is used as floating shield.This shielding that can float is conducive to the dielectric strength in open circuit stage and reduces the risk of dielectric breakdown.In the diagram, this room is in the position being called isolated location.The closed of change over switch 4 performs, thus causes the ground connection of the second fixed contact 9.As a result, in the electric field acute variation of box inside.Virtual obstacles (virtual barrier) after this prevents the directly electric arc between contact.Then this box is used as converting isolation switch.The isolation features in box is improved at the earthed switch of make position.
In Figure 5, movable contact 8 has contacted second fixed contact 9 of box A.Then this room is in earthing position.Vacuum technique makes it possible to realize making capacity with reliable fashion.
Therefore, realize the medium-voltage distribution room with simple short circuit and ground connection by the present invention, thus caused the reduction of size, utilize vacuum technique as much as possible simultaneously.
The present invention is not limited to only describe and the embodiment of example with exemplary purpose naturally.
Like this, such as, the switchgear of the current interruptions performed in box can be switch or circuit breaker.Similarly, replace being arranged in same box, difference in functionality can be arranged in different box, and a box is used for a function.
The combination carrying out equivalent on the contrary, the present invention includes all technical equivalents of the said apparatus according to spirit of the present invention, and if then the present invention includes these combinations.
Claims (9)
1. a medium-voltage distribution room, to perform the current flowing function between these two parts respectively between two parts that its design is engaged in circuit, current interruptions function between these two parts, one of voltage isolation features between these two parts and the described part of described circuit grounding function, it is characterized in that, above-mentioned current flowing function (a), interruption and voltage isolation features (b) perform in a vacuum, and described switchgear house comprises the extra separator (4) be arranged in earthed circuit (3) further, described extra separator is used in earthed circuit (3), increasing extra external series gap (I) at current flowing and current interruptions position, and between described two parts, eliminate this extra external series gap (I) when Part II (2) ground connection of foregoing circuit in voltage isolated location, in addition, this medium-voltage distribution room comprises switch or the circuit breaker (5) of three positions, these three positions are the position of the current flowing between wherein said two parts (1 and 2) respectively, current flowing between wherein said two parts is interrupted and the segregate position of voltage, and earthing position, this switch or circuit breaker (5) are contained in vacuum box (A), this box (A) comprises shell (6), first fixed contact (7) of the Part I (1) being electrically connected to foregoing circuit is had at this shell (6) internal engagement, be electrically connected to the movable contact (8) of the Part II (2) of foregoing circuit, and be used as floating shield or be used as contact and be electrically connected to second fixed contact (9) of (T).
2. switchgear house as claimed in claim 1, it is characterized in that, described grounding function (c) performs equally in a vacuum.
3., as switchgear house in any one of the preceding claims wherein, it is characterized in that, described extra separator (4) is realized by breaking technique in atmosphere, in gas, in oil or in a vacuum.
4. switchgear house as claimed in claim 1, it is characterized in that, described extra separator comprises change over switch (4), and this change over switch (4) makes described second fixed contact (9) can ground connection or earth-free (T).
5. switchgear house as claimed in claim 3, it is characterized in that, the Part I of foregoing circuit is bus-bar (1), and the Part II of foregoing circuit is cable (2).
6. the switchgear house as described in claim 2 or 4, is characterized in that, the Part I of foregoing circuit is bus-bar (1), and the Part II of foregoing circuit is cable (2).
7. the switchgear house as described in claim 1 or 4, is characterized in that, described second fixed contact (9) is positioned at the substantial middle place of described box (A).
8. switchgear house as claimed in claim 1, it is characterized in that, this switchgear house comprises the device for detecting the leakage current in described box.
9. switchgear house as claimed in claim 8, is characterized in that, the device for detecting the leakage current in described box comprises and flows through the described voltage of the second fixed contact (9) or the device of electric current for continuous measurement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0807109A FR2940543A1 (en) | 2008-12-18 | 2008-12-18 | MEDIUM VOLTAGE POWER DISTRIBUTION CELL |
| FR0807109 | 2008-12-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101752799A CN101752799A (en) | 2010-06-23 |
| CN101752799B true CN101752799B (en) | 2015-01-21 |
Family
ID=40863748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910261462.8A Active CN101752799B (en) | 2008-12-18 | 2009-12-15 | Medium-voltage electric distribution cell |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2200060B1 (en) |
| CN (1) | CN101752799B (en) |
| AT (1) | ATE520138T1 (en) |
| ES (1) | ES2368610T3 (en) |
| FR (1) | FR2940543A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010053466A1 (en) * | 2010-11-30 | 2012-05-31 | Maschinenfabrik Reinhausen Gmbh | Step switch and vacuum interrupter for such a tap changer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1052899A (en) * | 1973-12-21 | 1979-04-17 | Hazemeijer B.V. | Switching apparatus including two switches and an interposed barrier |
| CN1206215A (en) * | 1997-07-23 | 1999-01-27 | 株式会社日立制作所 | Vacuum switch and vacuum switch apparatus using the same |
| JP2003308767A (en) * | 2002-04-12 | 2003-10-31 | Toshiba Corp | Vacuum switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10030670C2 (en) * | 2000-06-23 | 2002-06-13 | Siemens Ag | Vacuum interrupter with two contact systems |
-
2008
- 2008-12-18 FR FR0807109A patent/FR2940543A1/en active Pending
-
2009
- 2009-10-20 ES ES09354042T patent/ES2368610T3/en active Active
- 2009-10-20 AT AT09354042T patent/ATE520138T1/en not_active IP Right Cessation
- 2009-10-20 EP EP09354042A patent/EP2200060B1/en active Active
- 2009-12-15 CN CN200910261462.8A patent/CN101752799B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1052899A (en) * | 1973-12-21 | 1979-04-17 | Hazemeijer B.V. | Switching apparatus including two switches and an interposed barrier |
| CN1206215A (en) * | 1997-07-23 | 1999-01-27 | 株式会社日立制作所 | Vacuum switch and vacuum switch apparatus using the same |
| JP2003308767A (en) * | 2002-04-12 | 2003-10-31 | Toshiba Corp | Vacuum switch |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2368610T3 (en) | 2011-11-18 |
| EP2200060A1 (en) | 2010-06-23 |
| EP2200060B1 (en) | 2011-08-10 |
| FR2940543A1 (en) | 2010-06-25 |
| ATE520138T1 (en) | 2011-08-15 |
| CN101752799A (en) | 2010-06-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |