EP2932520A1 - Improved circuit breaker apparatus - Google Patents
Improved circuit breaker apparatusInfo
- Publication number
- EP2932520A1 EP2932520A1 EP13802986.3A EP13802986A EP2932520A1 EP 2932520 A1 EP2932520 A1 EP 2932520A1 EP 13802986 A EP13802986 A EP 13802986A EP 2932520 A1 EP2932520 A1 EP 2932520A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contacts
- permanent
- arc
- branch
- control
- 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.)
- Withdrawn
Links
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
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/122—Load break switches both breaker and sectionaliser being enclosed, e.g. in SF6-filled container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
-
- 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
- H01H33/42—Driving mechanisms
-
- 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
- H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
-
- 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
Definitions
- the invention relates to high voltage electrical circuits. More particularly, the invention relates to an improved apparatus for power failure.
- High-voltage circuits can include, among others, two types of power cut-off devices: circuit breakers and disconnectors.
- An isolator has only one set of contacts, called permanent contacts. Permanent contacts of a disconnector may be in the air. When closed, the disconnector passes current through permanent contacts. When open, the permanent contacts of a disconnector are separated by a distance offering a certain dielectric strength (or withstand).
- a circuit breaker has a set of main contacts, also called permanent contacts, and a set of arc contacts. In known manner, these two sets of contacts are arranged in a closed volume containing a gas favorable to the extinction of the electric arc, and therefore to the breaking of the current. When closed, the circuit breaker passes current through permanent contacts. During his maneuver opening, the permanent contacts and the arc contacts separate.
- 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.
- Such a series architecture comprises two separate commands: the control of the circuit breaker, and the control of the disconnector.
- FIG. 1 illustrates such a series connection of a circuit-breaker 11 and a disconnector 21.
- the circuit-breaker 11 has a set of permanent contacts 12 and a set of arcing contacts 13.
- the disconnector 21 has a set of permanent contacts 22. Here, all the sets of contacts 12, 13 and 22 are shown in their open position.
- the apparatus described in this document discloses a circuit breaker having a plurality of concentric outer tubes forming the main contacts, and arc contacts, internal to the tubes.
- a disconnect switch is integrated in the circuit breaker, inside the tubes and aligned longitudinally with the arcing contacts.
- This device has the particularity of having a mechanical control in the form of a hub content in a tree.
- the shaft has a lever connected to a tube of the sliding circuit breaker.
- the hub has a lever connected to a movable bow contact rod.
- the hub further comprises a connecting rod connected to a sliding contact of the disconnector.
- This architecture has the disadvantage of using a complex command to put in motion the different elements.
- the object of the invention is to propose an alternative to existing disjunctuator-disconnector combinations which is simple, offers great flexibility of use and is economical.
- the invention thus relates to a current-breaking device comprising a set of arcing contacts, a set of isolating contacts and a set of permanent contacts, a first branch comprising the arcing contact set and the set of contacts. severely connected in series, a second branch having the set of permanent contacts, the second branch being connected in parallel with the first branch, each set of contacts admitting a respective open position and a respective closed position.
- the current-breaking apparatus comprises a first command and a second command, the first command making it possible to simultaneously trigger the switching of the set of arcing contacts and the set of permanent contacts from one position to the other , the second command for switching the set of sectioning contacts between its two positions, the set of sectioning contacts can switch to its open position only when the arc contact set and the set of permanent contacts are in their open position, the two commands being separate commands, the second command being an actuation button connected to an electric motor.
- the current almost exclusively passes through a single set of contacts, those of the second branch, hence their denomination of permanent contacts, when the circuit is closed, limiting the losses by Joule effect.
- the set of arcing contacts is isolated independently of the set of permanent contacts in a gas tight volume containing sulfur hexafluoride (SF6).
- SF6 sulfur hexafluoride
- This insulating gas having very good insulating and arc resorbing properties the invention advantageously makes it possible to limit the volume of the interrupting chamber.
- the set of permanent contacts is isolated independently of the set of arcing contacts and the set of isolating contacts.
- the invention also relates to a power failure method using a switchgear device comprising a set of arcing contacts, a set of sectioning contacts and a set of permanent contacts, a first branch comprising the set of contact contacts. arc and the set of series-connected disconnecting contacts, a second branch comprising the set of permanent contacts, the second branch being connected in parallel with the first branch, each set of contacts admitting a respective open position and a respective closed position, the switchgear further comprising a first command and a second command, the first command for simultaneously triggering the switch of the set of arc contacts and the set of permanent contacts from one position to another, the second command to toggle the set of sectioning contacts between its two positions, comprising the following steps:
- both The commands are separate commands, the second command being an actuation button connected to an electric motor.
- FIG. 1 is a schematic representation of a current switch device comprising a circuit breaker and a disconnector connected in series;
- FIG. 2 is a schematic representation of a new switchgear apparatus.
- the switchgear apparatus 30 has a cut-off module 31, and two dielectric separation modules 41 and 51.
- the apparatus 30 further comprises two controls 61 and 62.
- the breaking module 31 comprises a set of arc contacts 32.
- the breaking module 31 has a closed position in which the current can pass through it and an open position in which the current is interrupted.
- the contacts 32 are configured to support the formation of an electric arc during their separation (as well as when they are brought together when the power is restored), that is to say during a transition maneuver between the position closed and the open position.
- the set of arcing contacts 32 is isolated in a closed volume containing sulfur hexafluoride (SF6) or another gas or gas mixture with the desired insulating properties or in a closed volume under vacuum, for example a light bulb. empty.
- SF6 sulfur hexafluoride
- a closed volume under vacuum for example a light bulb. empty.
- the separation module 41 has a set of sectioning contacts 42.
- the set of sectioning contacts 42 has an open position and a closed position. In the open position, the contacts 42 provide a dielectric function, that is to say an electrical insulation function by their distance.
- the contacts 42 are isolated in a closed volume containing air, N 2 or another gas or gas mixture with the desired insulating properties.
- the separation module 51 has a set of contacts 52.
- the set of contacts 52 has an open position and a closed position. In the open position, the contacts 52 provide a dielectric function, that is to say an electrical insulation function by their distance.
- the contacts 52 are isolated in a closed volume containing sulfur hexafluoride (SF6), air, N2 or another gas or gas mixture with the desired insulating properties.
- SF6 sulfur hexafluoride
- the module 41 being separated from the other modules, is polluted neither by the cutoff gases nor by the products generated by the arc.
- the breaking module 31 and the separation module 41 are connected in series with each other, thus forming part of a first branch 11.
- a second branch 72, of which the separation module 51 is part, is connected in parallel with the first branch 71.
- the separation module 51 is connected at a first end of the first branch 71 to the breaking module 31 and at a second end from the first branch 71 to the separation module 41.
- the first command 61 controls the simultaneous triggering of the opening of the breaking module 31 and the separation module 51.
- the second control 62 controls the opening of the separation module 41.
- the control 62 is a means for actuating an electric motor, for example an actuating button connected to an electric motor.
- These two controls 61 and 62 are interlocked mechanically and / or electrically while being distinct, that is to say, controlled in opening independently of one another.
- the interlocking is for example made by electrical logic. That is, the transmission of the opening or closing orders depends on the states of closure or opening of the different modules.
- control 62 can operate opening the separation module 41 only when the modules 31 and 51 are in the open position. Conversely, the control 61 can be actuated in closing only when the set of contacts 42 is in the closed position.
- the sizing of the switchgear is such that the electrical resistance of the branch 71 is greater than the resistance of the branch 72 by at least a factor of 10. Furthermore, by skin effect, the current density is lower than the resistance of the branch 72. At least a factor 100 in the branch 71. Thus, the Joule losses of the branch 71 are much smaller and negligible compared to those of the branch 72. We therefore speak of permanent contacts for the contacts 52.
- the command 61 triggers the opening of the breaking module 31 and the separation module 51.
- the architecture of the apparatus 30 is such that the contacts 52 separate before the arcing contacts 32. When the contacts 52 are separated, the current no longer circulates in the second branch 72.
- the separation module 41 is then opened, that is to say the contacts 42 are separated by actuation of the second control 62, so as to prevent the current from recovering in the branch 71 during intervention on a portion of circuit disabled.
- the set of contacts 42 is closed before the sets of contacts 32 and 52.
- the control 62 is actuated so as to close the separation module 41, then the control 61 which triggers the closing of the breaking module 31 and the separation module 51.
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 |
---|---|---|---|
FR1261956A FR2999331B1 (en) | 2012-12-12 | 2012-12-12 | IMPROVED CURRENT CUTTING APPARATUS |
PCT/EP2013/076252 WO2014090887A1 (en) | 2012-12-12 | 2013-12-11 | Improved circuit breaker apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2932520A1 true EP2932520A1 (en) | 2015-10-21 |
Family
ID=48083237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13802986.3A Withdrawn EP2932520A1 (en) | 2012-12-12 | 2013-12-11 | Improved circuit breaker apparatus |
Country Status (4)
Country | Link |
---|---|
US (1) | US20150318124A1 (en) |
EP (1) | EP2932520A1 (en) |
FR (1) | FR2999331B1 (en) |
WO (1) | WO2014090887A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3028089B1 (en) | 2014-10-30 | 2016-12-30 | Alstom Technology Ltd | MEDIUM OR HIGH VOLTAGE SWITCH OR CIRCUIT BREAKER WITH ENHANCED FIXED CONTACTS AND METHOD OF USE |
FR3029351B1 (en) | 2014-12-02 | 2017-12-29 | Alstom Technology Ltd | ELECTRICAL CUTTING DEVICE INTEGRATING CIRCUIT BREAKER AND DISCONNECT |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3857006A (en) * | 1973-10-30 | 1974-12-24 | Hitachi Ltd | Gas insulated switching apparatus |
FR2719154B1 (en) * | 1994-04-25 | 1996-06-07 | Merlin Gerin | Medium voltage electric switch. |
DE19511168A1 (en) * | 1995-03-28 | 1996-10-02 | Abb Management Ag | Switching device |
FR2763171B1 (en) * | 1997-05-07 | 1999-07-09 | Gec Alsthom T & D Sa | CIRCUIT BREAKER |
FR2770678B1 (en) * | 1997-10-30 | 1999-12-31 | Gec Alsthom T & D Sa | GENERATOR CIRCUIT BREAKER WITH SINGLE MECHANICAL CONTROL |
FR2772184B1 (en) * | 1997-12-08 | 2000-01-28 | Gec Alsthom T & D Sa | CONTROL OF INTERROLLING OF A CIRCUIT BREAKER AND A DISCONNECTOR |
JP3799924B2 (en) * | 2000-01-11 | 2006-07-19 | 株式会社日立製作所 | Power circuit breaker and power plant electrical circuit device |
ES2654037T3 (en) * | 2003-12-02 | 2018-02-12 | Schneider Electric Energy Manufacturing Italia S.R.L. | Switching device / circuit breaker for electrical substations |
FR2896336B1 (en) * | 2006-01-17 | 2009-04-03 | Areva T & D Sa | CIRCUIT BREAKER ALTERNATOR OF COMPACT STRUCTURE |
FR2901055B1 (en) * | 2006-05-12 | 2008-07-04 | Areva T & D Sa | ALTERNATOR DISCONNECT CIRCUIT BREAKER ACTUATED BY A MOTOR SERVO |
FR2902923B1 (en) * | 2006-06-23 | 2008-09-19 | Areva T & D Sa | CYLINDRICAL CAM OPERATION OF A BREAKER ALTERNATOR DISCONNECTOR |
US8410389B2 (en) * | 2009-12-29 | 2013-04-02 | Schneider Electric USA, Inc. | Remote drive for disconnector/isolator used in switchgear |
-
2012
- 2012-12-12 FR FR1261956A patent/FR2999331B1/en active Active
-
2013
- 2013-12-11 EP EP13802986.3A patent/EP2932520A1/en not_active Withdrawn
- 2013-12-11 US US14/650,049 patent/US20150318124A1/en not_active Abandoned
- 2013-12-11 WO PCT/EP2013/076252 patent/WO2014090887A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FR2999331B1 (en) | 2019-05-31 |
WO2014090887A1 (en) | 2014-06-19 |
US20150318124A1 (en) | 2015-11-05 |
FR2999331A1 (en) | 2014-06-13 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20150615 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH |
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17Q | First examination report despatched |
Effective date: 20160930 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20170411 |