EP3227897A1 - Dispositif de coupure electrique integrant un disjoncteur et un sectionneur - Google Patents
Dispositif de coupure electrique integrant un disjoncteur et un sectionneurInfo
- Publication number
- EP3227897A1 EP3227897A1 EP15802108.9A EP15802108A EP3227897A1 EP 3227897 A1 EP3227897 A1 EP 3227897A1 EP 15802108 A EP15802108 A EP 15802108A EP 3227897 A1 EP3227897 A1 EP 3227897A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- movable
- fixed
- circuit breaker
- permanent
- 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.)
- Granted
Links
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000013519 translation Methods 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 206010014405 Electrocution Diseases 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
-
- 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
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break 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
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/125—Load break switches comprising a separate circuit breaker
-
- 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
Definitions
- the invention relates to the power failure in an installation of medium or high voltage type.
- An electrical installation of the high voltage or medium voltage type typically comprises two types of equipment which are on the one hand the circuit breakers and on the other hand the disconnectors.
- a disconnector comprises a single set of contacts, comprising a fixed disconnection contact and a movable disconnection contact, through which the current flows when the disconnector is closed.
- the disconnecting contacts are separated by a distance through which the disconnector has a certain rigidity, that is to say a determined dielectric strength.
- a circuit breaker has a set of permanent contacts connected in parallel with a set of arcing contacts. These arcing contacts are in an enclosure containing a dielectric gas such as SF6 promoting the extinction of an electric arc formed between these arcing contacts at the opening of the circuit breaker.
- a dielectric gas such as SF6
- the arcing contacts can not be traversed by a nominal current for a time too long, they are used only during the operation of the circuit breaker. In normal operation, when the circuit-breaker is closed, the permanent contacts are thus closed, so that the nominal current mainly passes through these permanent contacts. During the opening maneuver, the permanent contacts are open before the opening of the arcing contacts.
- a circuit breaker and a disconnector are generally used in series to combine the characteristics and advantages of each device: the breaking capacity of the circuit breaker and the dielectric strength of the disconnector.
- the object of the invention is to propose a new arrangement of this type of apparatus.
- the invention relates to a current-breaking device comprising a circuit breaker including a first fixed conductive support carrying a fixed arcing contact and a moving arcing contact between a closed position and an open position and also carrying a movable permanent contact. between a closed position and an open position, the moving arc contact and the movable permanent contact being electrically connected to the first fixed support, and a disconnector including a second fixed conductive support carrying a movable disconnection contact between a closed position and a position open, and in which: the movable disconnecting contact is in contact with the fixed arc contact when it is closed;
- the movable severing contact is moved away from the fixed arcing contact when it is open;
- the movable sectional contact and the movable permanent contact are connected to each other when they are both in the closed position;
- the movable sectional contact and the movable permanent contact are spaced from each other when one or the other is open.
- the breaking device together constitutes a circuit breaker and a disconnector, thereby having a reduced amount of components to provide two functions in one.
- the movable permanent contact also plays the role fixed contact of the disconnector, and similarly, the movable disconnection contact also plays the role of fixed permanent contact.
- the invention also relates to a device thus defined, wherein the movable arcing contact and the moving permanent contact are kinematically connected to each other to move together in a kinematic in which when the movable sectional contact is closed during a displacement of the movable arcing contact and the moving permanent contact from the closed position to the open position, the moving permanent contact is disconnects from the movable sectional contact before the movable arcing contact disconnects from the fixed arcing contact.
- the invention also relates to a device thus defined, wherein the movable arcing contact and the moving permanent contact are kinematically connected to each other forming a single movable element.
- the invention also relates to a device thus defined, wherein the movable permanent contact has a hollow form of revolution surrounding the fixed arcing contact and the movable arcing contact being slidably mounted relative to the first fixed support which carries it.
- the invention also relates to a device thus defined, wherein the movable severing contact has a shape of revolution and is slidably mounted relative to the second movable support comprising a tubular connecting portion to the movable permanent contact and a central connecting finger to the fixed arc contact.
- the invention also relates to a device thus defined, wherein the components of the circuit breaker on the one hand and the components of the disconnector on the other hand are spaced a distance when all the contacts are open, to allow the insertion of a screen between the circuit breaker and the disconnector.
- the invention also relates to a device thus defined, equipped with a screen s' inserting in the space between the components of the circuit breaker and the disconnector components when the contacts are open.
- FIG. 1 is a schematic side sectional view of the device according to the invention in the closed state
- FIG. 2 is a schematic side sectional view of the device according to the invention when its circuit breaker is open;
- FIG. 3 is a schematic side sectional view of the device according to the invention when its circuit breaker and its disconnector are open;
- FIG. 4 is a schematic side sectional view of the device according to the invention installed in an enclosure.
- the cut-off device 1 has a shape of revolution about an axis AX which corresponds to its longitudinal axis. It comprises an electrical circuit breaker part, marked by 2 and located on the left in the figures, and an electrical disconnector part, marked by 3 and located in the right part in the figures.
- This device comprises a first fixed support 4, located on the side of the circuit breaker part, and a second fixed support 6, located on the side of the disconnector part.
- the fixed supports 4 and 6 are electrically connected respectively to one and the other of the line sections.
- the fixed support 4 comprises a tubular portion 7, one end of which is closed by a flat bottom 8 which carries on its internal face a base 9 itself carrying a cut-off bulb 11, the base and the bulb being thus surrounded by the tubular portion 7.
- This bulb 11 delimits a sealed enclosure containing a dielectric gas such as SF6, and it encloses a movable arcing contact and a fixed arcing contact, which are the contacts between which an electric arc can be formed during the opening phase. of the disjunctor.
- a dielectric gas such as SF6
- the bulb 11 comprises a cylinder 12, one end of which is carried by the base 9 and the other end of which is closed by a bulb flank 13 which bears on its internal face, that is to say on its face. oriented towards the inside of the bulb, the fixed arc contact 14.
- This fixed arcing contact 14 is a rectilinear finger extending in the cylinder 12 towards the base 9, and which has a curved free end located substantially mid-length of the cylinder 12.
- the movable arcing contact which is indicated by 16, is carried by the base 9 by being translatable in translation along the axis AX in the bulb and being electrically connected to the fixed support 4. It comprises a portion tubular whose end comes surround the fixed arc contact 14 to establish the electrical contact in the closed position as in Figure 1, and a nozzle surrounding this tubular portion.
- the movable arcing contact 16 When opening the circuit breaker, the movable arcing contact 16 is moved in translation to move from its closed position where it is deployed, to its open position where it is retracted. When the arcing contacts 14 and 16 separate during this movement, an electric arc is established between them, and thanks in particular to the presence of insulating gas SF6, this arc disappears before the end of the opening movement.
- the circuit breaker In operation, the entire nominal current does not pass through the arcing contacts, because eventually it would deteriorate.
- the circuit breaker thus has a so-called permanent moving contact, through which the greater part of the line current passes when the circuit-breaker is closed and is not maneuvered.
- the moving permanent contact which is marked by 17, here has a tube shape which slides at the inside of the tubular portion 7 of the fixed support 4 to be movable in translation between a closed position and an open position.
- the movable permanent contact 17 In the closed position corresponding to Figure 1, the movable permanent contact 17 is deployed to be in electrical contact with another contactor marked by 18. In the open position corresponding to Figure 2, the movable permanent contact 17 is retracted into the portion tubular 7 to be spaced from the other contact 18.
- the movable permanent contact 17 is electrically connected to the tubular portion 7 in which it slides through a sliding contact 19 carried by the inner face of the tubular portion 7 in the end region of this tubular portion 7.
- the movable permanent contact 17 is thus electrically connected to the fixed support 4 regardless of the position it occupies.
- the movable permanent contact 17 and the movable arcing contact 16 are kinematically connected to one another by mechanical elements, not shown, to form here a single moving element.
- the movable permanent contact disconnects from the contact 18 before the movable arcing contact 16 disconnects from the fixed arcing contact 14
- the arc can not be formed at the level of the permanent contact, but only at the level of the arcing contacts. In the example of the figures, this disconnection order is ensured by an appropriate choice of the lengths and positions of the moving permanent contact 17 with respect to the contact 18, and the movable arcing contact 16 with respect to the fixed arcing contact 14. More concretely, when the crew is in the closed position, the driving length of the fixed arcing contact 14 in the movable arcing contact 16 is greater than the driving length of the moving permanent contact in the contact 18. .
- Another possibility may be to provide that the movable arcing contact 16 and the movable permanent contact 17 are movable independently of one another, and that they are maneuvered one after the other by means of a control system. command or device operating procedure.
- This second fixed support 6 thus comprises, like the first, a tubular portion 21, one end of which is closed by a flat bottom 22.
- the movable contact 18 of the disconnector comprises a tubular body 23 which is slidably mounted inside the portion tubular 21 of the fixed support 6.
- a sliding contact 24 mounted to the inner face of the tubular portion 21, in the region of its end, ensures a continuous electrical contact between the fixed support 6 and the movable cutting contact 8.
- the tubular body 23 carries in the region of its end near the moving permanent contact 17, that is to say the end extending towards the first fixed support 4, a sliding contact 26 carried by its internal face.
- This movable cutting contact 8 is displaceable in translation between an open position corresponding to that of FIG. 3 and a closed position corresponding to that it occupies in FIGS. 1 and 2.
- the movable cutting contact 8 When it occupies its open position, the movable cutting contact 8 is retracted into the tubular portion 21 to be spaced from the movable permanent contact 17, whether it is closed or open. When it occupies its closed position, the movable cutting contact 8 is deployed to come into contact with the moving permanent contact 17 if it is closed, that is to say deployed as in FIG. 1.
- the device is completely closed, and the nominal current passes successively, through the fixed support 4, the contact movable standing 17, the movable cutting contact 8, and the second fixed support 6.
- This movable cutting contact 8 comprises, in addition to its tubular body 23, a plane central wall 27 which extends in a plane normal to the axis AX, which closes the tubular body 23, and which carries a central contact pin 28.
- This contact finger 28 extends along the axis of revolution AX towards the breaking bulb 11, that is to say in the direction opposite to the second fixed support 6.
- the bulb side 13 carries on its outer face a tubular contact member 29 into which the contact finger 28 engages when the movable disconnection contact 8 occupies its closed position as on the FIG. 1 or FIG. 2.
- the fixed arc contact 14 of the circuit breaker is electrically connected to the second fixed support 6, via the bulb side 13, the contact member 29, and the movable sectional contact8.
- the cut-off device according to the invention is completely closed, as in FIG. 1. Its opening then consists first of all in maneuvering the mobile assembly comprising the moving permanent contact 17 and the movable arc contact 16, from its closed position to its open position, ie from left to right in the figures.
- the mobile permanent contact 17 disconnects from the contact of At this stage, the entire current passes through the arcing contacts 14 and 16, and through the central finger 28 of the movable disconnecting contact 18 to reach the fixed support 6.
- the current is cut off because the movable permanent contact 17 and the disconnection contact 18 are spaced from each other and the movable arcing contact 16 and the fixed arcing contact 14 are themselves also spaced apart from each other.
- FIG. 4 shows the integration of a breaking device according to the invention into an enclosure comprising a shell 31 whose upper part is closed by two half-roofs 32 and 33 which respectively cover the part 2 forming circuit breaker and the part 3 forming disconnector.
- These two half-roofs can be opened independently of one another, and they are spaced from each other along the axis AX by a slot of small width allowing the insertion of an electric screen 34 before opening one or the other of the roofs. This slot is used to insert the screen, but it is narrow enough to prevent a technician to move his arm or leg.
- An intervention on the circuit breaker part of the device thus consists in putting the circuit breaker part off, inserting the electric screen 34 between the two half-roofs, leaving the disconnecting part energized.
- the half roof 32 covering the circuit breaker portion can then be opened to allow an operator to intervene on this circuit breaker without risk of electrocution.
- the screen that is inserted along the circuit breaker portion ensures the maintenance of a sufficient distance, ie the distance D, between all the components of the circuit-breaker part and all the components of the disconnecting part during the intervention of the operator.
- the invention thus provides the following advantages: in case of damage on the control of the circuit breaker part, the disconnector part remains operational and can be operated independently of the other part.
- the device according to the invention while assembling a circuit breaker and a disconnector thus allows their independent operation. It is thus possible safely to perform switching tests of the circuit breaker part, simply leaving the disconnecting part open, for example before commissioning the system.
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1461804A FR3029351B1 (fr) | 2014-12-02 | 2014-12-02 | Dispositif de coupure electrique integrant un disjoncteur et un sectionneur |
PCT/EP2015/078138 WO2016087406A1 (fr) | 2014-12-02 | 2015-12-01 | Dispositif de coupure electrique integrant un disjoncteur et un sectionneur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3227897A1 true EP3227897A1 (fr) | 2017-10-11 |
EP3227897B1 EP3227897B1 (fr) | 2018-10-24 |
Family
ID=52589555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15802108.9A Active EP3227897B1 (fr) | 2014-12-02 | 2015-12-01 | Dispositif de coupure electrique integrant un disjoncteur et un sectionneur |
Country Status (5)
Country | Link |
---|---|
US (1) | US10115546B2 (fr) |
EP (1) | EP3227897B1 (fr) |
JP (1) | JP2018501756A (fr) |
FR (1) | FR3029351B1 (fr) |
WO (1) | WO2016087406A1 (fr) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2617633B1 (fr) * | 1987-07-02 | 1989-11-17 | Merlin Gerin | Disjoncteur a arc tournant et a expansion |
JPH08129942A (ja) * | 1994-10-28 | 1996-05-21 | Hitachi Ltd | パッファ形ガス遮断器 |
FR2737936B1 (fr) * | 1995-08-18 | 1997-09-19 | Gec Alsthom T & D Sa | Disjoncteur muni d'une resistance de fermeture avec dispositif d'insertion |
DE19547098A1 (de) * | 1995-12-16 | 1997-06-19 | Asea Brown Boveri | Leistungsschalter mit einem Einschaltwiderstand |
JPH09231885A (ja) * | 1996-02-22 | 1997-09-05 | Hitachi Ltd | ガス遮断器 |
FR2756413B1 (fr) * | 1996-11-28 | 1998-12-31 | Gec Alsthom T & D Sa | Disjoncteur a piston semi-mobile |
FR2763171B1 (fr) | 1997-05-07 | 1999-07-09 | Gec Alsthom T & D Sa | Disjoncteur avec sectionneur |
FR2763422B1 (fr) * | 1997-05-15 | 1999-07-09 | Gec Alsthom T & D Sa | Disjoncteur de generateur |
FR2770678B1 (fr) | 1997-10-30 | 1999-12-31 | Gec Alsthom T & D Sa | Disjoncteur de generateur a commande mecanique unique |
DE19859007A1 (de) * | 1998-12-21 | 2000-06-29 | Abb Patent Gmbh | Lasttrennschalter |
FR2840729B1 (fr) * | 2002-06-05 | 2004-07-16 | Alstom | Dispositif interrupteur pour haute ou moyenne tension, a coupure mixte par vide et gaz |
FR2892851B1 (fr) * | 2005-11-03 | 2013-12-06 | Areva T & D Sa | Chambre de coupure de courant a double chambre de compression |
ITMI20062161A1 (it) * | 2006-11-10 | 2008-05-11 | Vei Power Distrib S P A | Apparecchiature tripolare per uno scomparto in media o alta tensione e relativo scomparto comprendente tale apparecchiatura tripolare |
US8063333B2 (en) * | 2008-02-05 | 2011-11-22 | Southern States, Inc. | Limited flash-over electric power switch |
JP5178644B2 (ja) * | 2009-06-29 | 2013-04-10 | 株式会社東芝 | 投入抵抗接点付きガス遮断器及びその投入、遮断方法 |
DE102010005090A1 (de) * | 2010-01-15 | 2011-07-21 | Siemens Aktiengesellschaft, 80333 | Schaltkammer für einen Leistungsschalter sowie Leistungsschalter mit Schaltkammer |
KR101622422B1 (ko) * | 2011-07-20 | 2016-05-18 | 엘에스산전 주식회사 | 가스 절연 차단기 |
FR2999331B1 (fr) | 2012-12-12 | 2019-05-31 | Alstom Technology Ltd | Appareillage de coupure de courant ameliore |
-
2014
- 2014-12-02 FR FR1461804A patent/FR3029351B1/fr active Active
-
2015
- 2015-12-01 EP EP15802108.9A patent/EP3227897B1/fr active Active
- 2015-12-01 JP JP2017529059A patent/JP2018501756A/ja active Pending
- 2015-12-01 US US15/532,195 patent/US10115546B2/en active Active
- 2015-12-01 WO PCT/EP2015/078138 patent/WO2016087406A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
US20170338067A1 (en) | 2017-11-23 |
EP3227897B1 (fr) | 2018-10-24 |
FR3029351A1 (fr) | 2016-06-03 |
US10115546B2 (en) | 2018-10-30 |
JP2018501756A (ja) | 2018-01-18 |
FR3029351B1 (fr) | 2017-12-29 |
WO2016087406A1 (fr) | 2016-06-09 |
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