EP0877405A1 - Disjoncteur avec sectionneur - Google Patents

Disjoncteur avec sectionneur Download PDF

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Publication number
EP0877405A1
EP0877405A1 EP98401069A EP98401069A EP0877405A1 EP 0877405 A1 EP0877405 A1 EP 0877405A1 EP 98401069 A EP98401069 A EP 98401069A EP 98401069 A EP98401069 A EP 98401069A EP 0877405 A1 EP0877405 A1 EP 0877405A1
Authority
EP
European Patent Office
Prior art keywords
contact
shaft
movable
main
arcing
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Withdrawn
Application number
EP98401069A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Michel Plat
Jean-Marc Willieme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grid Solutions SAS
Original Assignee
GEC Alsthom T&D SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEC Alsthom T&D SA filed Critical GEC Alsthom T&D SA
Publication of EP0877405A1 publication Critical patent/EP0877405A1/fr
Withdrawn legal-status Critical Current

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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
    • H01H33/6661—Combination with other type of switch, e.g. for load break switches

Definitions

  • the invention relates to a generator circuit breaker comprising a fixed tubular main contact and a tubular main contact movable relative to the main tubular contact fixed according to a certain longitudinal direction, the main contacts defining a volume inside which is placed a vacuum or gas bulb having a fixed arcing contact and an arcing contact movable relative to the fixed arcing contact in said longitudinal direction, a means of synchronization ensuring the separation of the main front contacts separation of arcing contacts.
  • Such a circuit breaker is usually placed between a generator a power plant and a transformer connected to an energy transmission line.
  • the main contacts are massive enough to support high nominal currents without overheating. They define a relatively large volume important. which is more difficult to put under gas pressure or under empty, than a smaller bulb, placed inside of this volume.
  • the bulb includes a fixed arcing contact and a contact movable arc, less massive because supporting only the current breaker break.
  • the object of the invention is to provide a generator circuit breaker in which the main and movable arcing contacts are actuated by mechanical means in limited number and having a simple synchronization.
  • the invention relates to a generator circuit breaker comprising a fixed tubular main contact and a main contact tubular movable with respect to the following main tubular contact a certain longitudinal direction, the main contacts defining a volume inside which is placed a vacuum or gas having a fixed arcing contact and an arcing contact movable relative in fixed arc contact, in said longitudinal direction, a means synchronization ensuring the separation of the main contacts before the separation of the arcing contacts, characterized in that the means synchronization comprises a shaft extending transversely to the longitudinal direction and which carries a first lever connected to the contact main mobile, and a hub mounted inside the shaft and which carries a second lever connected to the movable arcing contact, the shaft and the hub being conformed on a certain part in two sectors between which is arranged a spring, the levers forming between them a certain angle in a transverse plane of the tree, the tree performing initially a rotation which moves the main contact mobile and rotates through the spring the hub which moves the
  • Synchronization of the movement of the mobile main contact with respect to the moving arcing contact is obtained simply by using two levers forming between them a certain angle in a plane transverse to the tree, and having lengths in a certain relationship.
  • the main mobile contact When the circuit breaker opens, the main mobile contact, relatively massive, moves at a substantially constant speed. which minimizes the power of the mechanical control.
  • the movable arcing contact first moves more slowly than the main contact, allowing him to travel a distance sufficient to withstand a transient electrical voltage before the arcing contact does not open. Then the movable arcing contact moves more faster than the moving main contact, reducing the exposure time of the arcing contacts to the breaking current.
  • the generator circuit breaker further includes a disconnector having a movable contact rod in said longitudinal direction compared to a crown of contact fingers integral with the vacuum or gas bulb.
  • the disconnector which has no breaking capacity, must not open only when the arcing contact is open.
  • the generator circuit breaker according to the invention makes it possible to move and synchronize the movable contact of the disconnector using a number limited additional resources compared to the resources already put used for moving and synchronizing contacts main and movable arc.
  • the circuit breaker generator includes a disconnector with a movable contact rod in said longitudinal direction relative to a crown of contact fingers secured to the vacuum or gas bulb, the contact being connected to the shaft by means of a connecting rod.
  • the synchronization of the displacement of the contact rod by relationship to mobile contacts is simply achieved by the cooperation of the tree and the connecting rod assembly, which makes it possible to open the disconnector when, on the one hand, the mobile main contact has made a stroke sufficient to hold a transient electrical voltage, and when on the other hand, the movable arcing contact has made a stroke sufficient dielectric strength.
  • Figure 1 shows schematically a sectional view longitudinal of the circuit breaker comprising a disconnector.
  • Figure 2 shows schematically the shaft and the hub of the circuit breaker in longitudinal and side views.
  • FIGS. 3A to 3C illustrate an example of synchronization of the main and arcing movable contacts when the circuit breaker opens.
  • the circuit breaker according to the invention is inserted between the portions 1 and 2 of a phase conductor of an electric line.
  • Portions 1 and 2 of the conductor are mechanically connected and electrically to fixed main contacts 4 and 5 of the circuit breaker. These contacts cooperate with a main contact 6 movable relative to to the main fixed contacts in a longitudinal direction D.
  • the cooperation between the fixed main contact 5 and the main contact mobile 6 is provided by a ring of contact fingers 5A.
  • a sliding contact 4A ensures cooperation between the fixed main contact 4 and the mobile main contact 6.
  • the fixed main contacts 4 and 5, and the mobile main contact 6 have a tubular shape defining a volume inside which is placed a vacuum or gas bulb 15 such as sulfur hexafluoride SF 6 .
  • This bulb comprises a cylindrical insulating envelope 15A provided with a metal bottom 15B provided with a hole 15C through which a movable arcing contact 15D slides.
  • the bulb is kept fixed in the volume by arms (not shown) fixed on the bottom 15B.
  • the bulb is sealed at the hole by a 15E bellows
  • the vacuum or the gas being consigned in the bulb it reigns in the volume defined by the main contacts an equal pressure of preferably air pressure.
  • the bulb is closed on the side opposite the bottom 15B by a bottom metal 15F carrying a fixed arcing contact 15G mounted inside the bulb, and a crown of metal contact fingers 15H mounted on the outside of the bulb.
  • 15G fixed arcing contact present at one end a hollow cylinder 15J inside which slides the movable arcing contact 15D.
  • a shaft 181 extending transversely to the longitudinal direction D and mounted with an inner hub 182.
  • the shaft and the hub are conformed on part B into two coaxial sectors 181B and 182B, sector 181B, integral with the tree, having for example an arc of 270 degrees, and sector 182B, integral with the hub, an arc for example of 70 degrees.
  • the two sectors have two faces 181F and 182F in gaze, forming between them an arc of 20 degrees, and connected by a spring 19.
  • the shaft 181 carries a first lever 171 secured to the contact main mobile 6 via a rigid rod 221
  • the hub 182 carries a second lever 172 secured to the movable arcing contact 15D via a rigid rod 222.
  • the two levers form in a plane transverse to the shaft 181, an angle for example equal to 65 degrees.
  • the length of the lever 172 is greater than that of the lever 171, for example in a ratio equal to 1.75.
  • a single control means moves in rotation of the shaft 181, for example, at constant speed.
  • the total angle of rotation of the shaft 181, for example equal to 60 degrees, is the sum of three angles each corresponding to a phase of the opening of the circuit breaker.
  • the circuit breaker In the initial state, the circuit breaker is closed. A first phase opening is implemented by a rotation of the shaft 181 of a first angle ⁇ 1, which causes a translation of the main contact mobile 6 by means of the lever 171 and the rigid rod 221.
  • the stiffness constant of the spring 19 is such that the rotation of the shaft 181 causes the rotation of the hub 182 by an angle substantially equal.
  • the hub In its rotation, the hub moves in translation the movable arcing contact 15D by means of the lever 172 and the rigid rod 222.
  • the angle ⁇ 1 for example equal to 15 degrees, is chosen, on the one hand, to allow the movable main contact 6 to make a stroke relatively large, to separate it from the fixed main contact 5 a sufficient distance to hold a transient electrical voltage, and on the other hand, to allow the movable arcing contact 15D, to perform a relatively small stroke, keeping it in contact with the fixed arcing contact 15G via the cylinder 15J.
  • FIGS. 3A to 3C are represented the stroke of the contact main movable 6 (CPx) and the stroke of the movable arcing contact 15D (CAx) as a function of the angle of rotation of the shaft 181, for the values example cited above (angle between lever 171 and lever 172 equal to 65 degrees, ratio of the lengths of the levers equal to 1.75).
  • FIG. 3A illustrates the rotation of angle ⁇ 1, at the end of which the stroke CPx1 of the movable main contact 6 is greater than the stroke CAx1 of the movable arcing contact 15D.
  • the difference in the travel of the mobile contacts main 6 and arc 15D is controlled by the angle A formed by the levers 171 and 172 in a plane transverse to the shaft 181. as well as by the ratio of their length.
  • FIG. 3B a second phase of opening the circuit breaker is implemented by rotating the shaft 181 by a second angle ⁇ 2.
  • the spring 19 drives as previously the hub 182 in rotation of a substantially equal angle.
  • the angle ⁇ 2 is chosen to allow the movable arcing contact 15D to make a full stroke CAx1 + CAx2 at the end of which the distance which separates it from the fixed arcing contact 15G is sufficient to withstand a dielectric voltage in the vacuum interrupter or in sulfur hexafluoride SF 6 .
  • This complete stroke corresponds to the distance which separates the cylinder 15J from the bottom 15B of the bulb.
  • the mobile main contact 6 extends his separation run, after which he has completed a full stroke CPx1 + CPx1, which is equivalent to the stroke complete CAx1 + CAx2 of the movable arcing contact 6.
  • This equivalence between the two races reflects the fact that the speed of movement in translation of the movable arcing contact 15D has become greater than the speed of the movable main contact 6 during the angle rotation ⁇ 2.
  • the relatively high speed of the movable arcing contact 15D makes it possible to open the circuit breaker quickly without excessively exposing the arcing contacts to the breaking current and also makes it possible to blow SF 6 gas with greater efficiency on an electric arc formed between arcing contacts.
  • the relatively low speed of the movable main contact 6, which has greater inertia by its more massive dimensions, is also advantageous, making it possible to minimize the power of the control of the shaft 181.
  • the movable main contact 6 performs, in a third phase, an overtravel compared to the arcing contact mobile 15D.
  • This overtravel is implemented, FIG. 3C. by one rotation of the shaft 181 by a third angle ⁇ 3, equal for example to 11 degrees.
  • the hub 182 being locked in rotation by a stop 13 fixed rise in the volume of the circuit breaker or on the arcing contact mobile 15D, spring 19 compresses to allow rotation ⁇ 3 of the shaft 181 and a damping of the rotation at the end of opening.
  • the end of travel of the movable main contact 6 corresponds to a sufficient distance of dielectric withstand in air.
  • the vacuum interrupter 15 is electrically connected in series with a disconnector comprising a movable contact 30 cooperating, at a first end, with finger crown 15H.
  • the contact mobile 30 is a rod passing through a disc 5C machined with the tube 5. This disc carries a crown 5D of contact fingers electrical to ensure the electrical connection between the rod 30 and the tube 5.
  • the other end of the contact rod 30 is articulated with a first connecting rod 21 mounted in rotation about an axis 23 perpendicular to the median plane of the circuit breaker, represented by the plane of Figure 1.
  • a second connecting rod 191 connects one end of the connecting rod 21 to tree 181.
  • the connecting rods 21 and 191 allow, using the single control of the shaft 181, to move and synchronize the contact rod 30 of the disconnector with respect to moving contacts 6 and 15D of the circuit breaker
  • the disconnector In the initial state, the disconnector is closed, in position P0 on the figure 1. In the first phase of opening, a rotation of angle ⁇ 1 of the shaft 181, causes a displacement in translation of the rod contact 30 to position P1, in which it remains in contact with the contact fingers 15H. Thus, the disconnector remains closed while the main contact 6 reaches the sufficient holding distance at a transient electric voltage.
  • a rotation of angle ⁇ 2 of the shaft 181 translates the contact rod 30 towards the position P2, which is, in the example, the same position as the position P0.
  • the disconnector is closed, while the movable arcing contact 15D reaches the sufficient dielectric withstand distance corresponding to its full stroke.
  • a rotation of the tree 181 from the angle ⁇ 3, translates the contact rod 30 towards the position P3, which opens the disconnector.
  • the full stroke of the rod contact 30 corresponds to a sufficient distance of dielectric withstand in the air.
  • the synchronization of the displacement of the contact rod 30 by relationship to mobile contacts is simply achieved by the cooperation of the shaft and connecting rods, which opens the disconnector when on the one hand, the main mobile contact has made a run sufficient to withstand a transient electrical voltage, and when on the other hand, the movable arcing contact has made a sufficient stroke for dielectric strength in vacuum or gas in the bulb.

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
EP98401069A 1997-05-07 1998-04-30 Disjoncteur avec sectionneur Withdrawn EP0877405A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9705639 1997-05-07
FR9705639A FR2763171B1 (fr) 1997-05-07 1997-05-07 Disjoncteur avec sectionneur

Publications (1)

Publication Number Publication Date
EP0877405A1 true EP0877405A1 (fr) 1998-11-11

Family

ID=9506676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401069A Withdrawn EP0877405A1 (fr) 1997-05-07 1998-04-30 Disjoncteur avec sectionneur

Country Status (7)

Country Link
US (1) US5898151A (id)
EP (1) EP0877405A1 (id)
KR (1) KR19980086793A (id)
BR (1) BR9801183A (id)
CA (1) CA2235082A1 (id)
FR (1) FR2763171B1 (id)
ID (1) ID20557A (id)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896336A1 (fr) * 2006-01-17 2007-07-20 Areva T & D Sa Disjoncteur sectionneur d'alternateur de structure compacte
WO2009093919A2 (en) * 2008-01-25 2009-07-30 Edward Januszkiewicz Mean voltage disconnector to be applied especially in mining electrical equipment
US7705262B2 (en) 2006-05-12 2010-04-27 Areva T&D Sa Alternator disconnector circuit-breaker by a servomotor
US7718913B2 (en) 2006-06-23 2010-05-18 Areva T&D Sa Actuation by cylindrical CAM of a circuit-breaker for an alternator
US9269514B2 (en) 2011-12-21 2016-02-23 Alstom Technology Ltd. Device for protection against particles generated by an electric switching arc
FR3029351A1 (fr) * 2014-12-02 2016-06-03 Alstom Technology Ltd Dispositif de coupure electrique integrant un disjoncteur et un sectionneur
US9443666B2 (en) 2012-10-02 2016-09-13 Alstom Technology Ltd. Electrical contact device of the contact finger type with a strong nominal current
CN109637880A (zh) * 2018-05-25 2019-04-16 许继集团有限公司 一种断路器及其操动机构
CN114093690A (zh) * 2021-11-12 2022-02-25 江苏宏达电气有限公司 一种单端驱动操作的断路器柜及工作方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772184B1 (fr) * 1997-12-08 2000-01-28 Gec Alsthom T & D Sa Commande d'interrouillage d'un disjoncteur et d'un sectionneur
DE102005032709A1 (de) 2005-07-07 2007-01-11 Siemens Ag Elektrisches Schaltgerät sowie Verfahren zum Betrieb eines elektrischen Schaltgerätes
FR2906642B1 (fr) * 2006-09-29 2008-12-19 Areva T & D Sa Actionnement par came cylindrique des contacts d'une chambre de coupure a double mouvement.
EP2337047B1 (de) * 2009-12-18 2014-07-02 Alstom Grid GmbH Elektrischer Leistungsschalter sowie Schaltstellungsanzeige hierfür
US8324521B2 (en) * 2010-11-15 2012-12-04 Eaton Corporation Bellows for use in vacuum interrupters
FR2999331B1 (fr) * 2012-12-12 2019-05-31 Alstom Technology Ltd Appareillage de coupure de courant ameliore
JP6219105B2 (ja) * 2013-09-20 2017-10-25 株式会社東芝 開閉器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399286A (en) * 1966-03-07 1968-08-27 Powerdyne Inc High voltage electric swtich
FR2189916A1 (id) * 1972-06-23 1974-01-25 Siemens Ag
DE3407858A1 (de) * 1984-02-29 1984-08-02 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Elektrischer vakuumschalter
EP0412479A1 (fr) * 1989-08-09 1991-02-13 Gec Alsthom Sa Disjoncteur à moyenne tension

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646292A (en) * 1970-05-11 1972-02-29 Gen Electric High-voltage electric circuit breaker with high-speed tripping means
US5495084A (en) * 1994-04-05 1996-02-27 Abb Power T&D Company Inc. Slip-through mounting structure for circuit interrupter
ATE160466T1 (de) * 1994-06-20 1997-12-15 Gec Alsthom T & D Ag Druckgasschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399286A (en) * 1966-03-07 1968-08-27 Powerdyne Inc High voltage electric swtich
FR2189916A1 (id) * 1972-06-23 1974-01-25 Siemens Ag
DE3407858A1 (de) * 1984-02-29 1984-08-02 Ernst Prof. Dr.techn.habil. 1000 Berlin Slamecka Elektrischer vakuumschalter
EP0412479A1 (fr) * 1989-08-09 1991-02-13 Gec Alsthom Sa Disjoncteur à moyenne tension

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8081407B2 (en) 2006-01-17 2011-12-20 Areva T&D Sa Compact disconnector circuit-breaker for an alternator
WO2007110251A1 (fr) * 2006-01-17 2007-10-04 Areva T & D Sa Disjoncteur sectionneur d'alternateur de structure compacte
CN101375360B (zh) * 2006-01-17 2012-07-18 阿雷瓦T&D股份有限公司 用于交流发电机的紧凑型断路器切断开关
FR2896336A1 (fr) * 2006-01-17 2007-07-20 Areva T & D Sa Disjoncteur sectionneur d'alternateur de structure compacte
US7705262B2 (en) 2006-05-12 2010-04-27 Areva T&D Sa Alternator disconnector circuit-breaker by a servomotor
US7718913B2 (en) 2006-06-23 2010-05-18 Areva T&D Sa Actuation by cylindrical CAM of a circuit-breaker for an alternator
WO2009093919A3 (en) * 2008-01-25 2009-09-17 Edward Januszkiewicz Mean voltage disconnector to be applied especially in mining electrical equipment
WO2009093919A2 (en) * 2008-01-25 2009-07-30 Edward Januszkiewicz Mean voltage disconnector to be applied especially in mining electrical equipment
US9269514B2 (en) 2011-12-21 2016-02-23 Alstom Technology Ltd. Device for protection against particles generated by an electric switching arc
US9443666B2 (en) 2012-10-02 2016-09-13 Alstom Technology Ltd. Electrical contact device of the contact finger type with a strong nominal current
FR3029351A1 (fr) * 2014-12-02 2016-06-03 Alstom Technology Ltd Dispositif de coupure electrique integrant un disjoncteur et un sectionneur
WO2016087406A1 (fr) * 2014-12-02 2016-06-09 General Electric Technology Gmbh Dispositif de coupure electrique integrant un disjoncteur et un sectionneur
US10115546B2 (en) 2014-12-02 2018-10-30 General Electric Technology Gmbh Electrical tripout device integrating a circuit breaker and an isolator
CN109637880A (zh) * 2018-05-25 2019-04-16 许继集团有限公司 一种断路器及其操动机构
CN114093690A (zh) * 2021-11-12 2022-02-25 江苏宏达电气有限公司 一种单端驱动操作的断路器柜及工作方法

Also Published As

Publication number Publication date
ID20557A (id) 1999-01-14
FR2763171B1 (fr) 1999-07-09
FR2763171A1 (fr) 1998-11-13
BR9801183A (pt) 1999-10-19
KR19980086793A (ko) 1998-12-05
US5898151A (en) 1999-04-27
CA2235082A1 (fr) 1998-11-07

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