EP2545574A1 - Elektrischer mittel- und hochspannungsschalter mit schliessendem rücklauf und vorrichtung für den einsatz eines widerstandes - Google Patents

Elektrischer mittel- und hochspannungsschalter mit schliessendem rücklauf und vorrichtung für den einsatz eines widerstandes

Info

Publication number
EP2545574A1
EP2545574A1 EP11706836A EP11706836A EP2545574A1 EP 2545574 A1 EP2545574 A1 EP 2545574A1 EP 11706836 A EP11706836 A EP 11706836A EP 11706836 A EP11706836 A EP 11706836A EP 2545574 A1 EP2545574 A1 EP 2545574A1
Authority
EP
European Patent Office
Prior art keywords
contact
control rod
movable
resistance insertion
movable resistance
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
Application number
EP11706836A
Other languages
English (en)
French (fr)
Other versions
EP2545574B1 (de
Inventor
André Cimala
Gwénaël MARQUEZIN
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology AG
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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2545574A1 publication Critical patent/EP2545574A1/de
Application granted granted Critical
Publication of EP2545574B1 publication Critical patent/EP2545574B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • H01H33/16—Impedances connected with contacts
    • H01H33/167—Impedances connected with contacts the impedance being inserted only while opening the switch
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid

Definitions

  • the invention relates to the field of electrical equipment of high and very high voltages, including switches and / or circuit breakers using the insertion of one or more resistors, during current closing operations.
  • a device for inserting a resistance to the closure of an interruption device current comprising a breaking chamber, a movable main contact 15, the insertion contacts 12 and 13 of the resistor being arranged in the breaking chamber of the apparatus with a displacement along a path parallel to that of the movable main contact 15.
  • the closing resistor is in alignment with the chamber disposed in the interrupting chamber and is not visible in the drawings, one of the contacts ensuring the insertion of the closing resistor is fixed to one of the main cutoff contacts and is slidably disposed with respect to one of the main cutoff contacts.
  • Temporary elastic connection means are used between the movable resistance contact and its support element so that the movable resistance contact can take two defined positions.
  • These temporary elastic connection means are composed of several balls 19, placed in holes and each pushed by a spring 18 towards the inner wall of the movable resistance contact 12, which comprises two series of notches 20 and 21 corresponding to the two positions of the means of temporary elastic connection.
  • a first object of the invention is a medium or high voltage electrical switch, equipped with a mechanical device comprising:
  • this electrical switch has a flexible toroidal coil spring placed in a groove of the control rod and an energy accumulation system bearing on the movable rod which is intended to be loaded up to a certain value. determined for which the flexible toroidal coil spring deforms under the force and allows the removal of the movable contact.
  • a second object of the invention is a device for inserting a resistor that can be used in an electrical switch, during a maneuver to close the switch, the insertion of the resistor to be made parallel to the movement of the chamber. switching off the switch, the device comprising: - two resistance insertion contacts, a mobile and a fixed;
  • a contact carrier of the movable resistance insertion contact capable of passing the current flowing in the resistor
  • At least one return spring constituting the energy storage system, which allows to return to its initial position the movable resistance insertion contact and which is placed between the contact carrier which is tubular, and the contact movable resistance insertion which is also tubular and integral with the control rod, the at least one return spring which can serve as a conductor vis-à-vis the resistance;
  • the elastic connecting element between the movable resistance insertion contact and the control rod consists of the spring of the flexible toroidal helical type placed in a notch of the control rod (or the movable contact of insertion of resistance) and a groove of the control rod (or movable contact), and the device comprises one or more return springs.
  • it comprises an intermediate contact for effecting the passage of the insertion current of the resistor between one end of the movable resistance insertion contact and the contact carrier.
  • At least a portion of the insertion resistor is placed around the control rod.
  • the first intended use of the switch according to the invention is provided for a resistance insertion device according to the invention can be used in parallel with the switch-off chamber of the switch on which the assembly is installed. It is recalled that the goal is to insert resistors for a time varying from four milliseconds to fifteen milliseconds in order to dissipate some of the energy that can cause overvoltages during closing operations under long power lines.
  • the resistance insertion device makes it possible, in the resistance insertion contact, to return to the open position before the main contacts of the switch or circuit breaker have the time to close and reopen during the first time. a closing / opening operation. This is intended not to interfere with the switch or circuit breaker, during the opening operation, in particular so as to maintain the recovery voltage during the break. For this reason, the contacts of the resistor insertion device must be at a sufficient distance to allow to obtain certain recovery voltage, when opening the main contacts of the switch. or circuit breaker on which is installed the device according to the invention.
  • the insertion device has a control rod 1, or a movement input link, which is directly linked to the travel of the main switch chamber of the switch or the circuit breaker, the races of which may be different.
  • This control rod 1 is temporarily secured to a movable resistance insertion contact 2 whose end 2A is provided to come into contact with the end 6A of a fixed contact insertion resistance 6.
  • All these elements are, in the embodiment described here, a shape of revolution about a common axis 10, which may preferably be parallel to the axis of the direction of movement of the main contacts of the switch or circuit breaker, to which the insertion device according to the invention.
  • a contact carrier 3 makes it possible to maintain the assembly and to make the current flow, if necessary, for example if the control rod 1 is made of insulating material and the resistor itself, which is not not shown in this figure is placed around it.
  • an intermediate contact 5 placed between the end of a contact carrier 3 and the movable contact for resistance insertion 2 is used.
  • the contact carrier 3 serves as a guide for the moving contact of resistance insertion 2.
  • the movable resistance insertion contact 2 comprises a shoulder 9 itself carrying a band 7 to guide its movements in the contact carrier 3.
  • This contact carrier 3 is integral with the movable resistance insertion contact 2 and the control rod 1.
  • One or more return springs 4 are placed in the cylindrical space formed between the inner face of the contact carrier 3 and the outer face of the movable resistance insertion contact 2.
  • the return springs 4 can serve as drivers for -vis resistance to insert.
  • the movable resistance insertion contact 2 as well as the control rod 1 have moved to the right until the end 2A of the movable insertion contact 2 penetrates inside. the end 6A and the fixed resistance insertion contact to establish the electrical contact between them and make the resistance operational. As a result, the springs 4 have been compressed.
  • the temporary connection means between the control rod 1 and the movable resistance insertion contact 2 consist of a groove 1A, made on the outer surface of the control rod 1, of a helical coil spring 8 which is flexible and a notch 2B, made on the inner surface of the movable resistance insertion contact 2.
  • the latter offers a resistance such that it pushes, via a shoulder 9, the movable resistance insertion contact 2 towards its position.
  • the flexible toric coil spring 8 deforming under the pressure of the force. As a result, it leaves the notch 2B of the movable resistance insertion contact 2 and allows the latter to move back to its initial position.
  • FIG. 4 shows this retracted position of the movable resistance contact 2.
  • the control rod has slightly continued its translational movement along the axis 10, keeping the flexible coil spring 8 in its notch 1A.
  • the interrupting chamber drives the control rod 1 in the opposite direction, that is to say it returns to the position of Figure 1, the coil spring 8 flexible found the notch 2B of the resistance insertion mobile contact 2.
  • Another shock can be deliberately provoked in another way.
  • a second type of spring may be added to the return springs 4, but having a different stiffness to cause a sudden increase in end-of-stroke forces. It can be seen that this system is relatively simple, while making it possible to achieve the going and the return of the movable resistance insertion contact.
  • the flexible toroidal coil spring 8 used in the switch according to the invention is a known spring.
  • This type of spring is of the type of the one marketed, inter alia, by the company BAL SEAL ENGINEERING.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Push-Button Switches (AREA)
EP11706836.1A 2010-03-09 2011-03-08 Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand Active EP2545574B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1051680A FR2957451A1 (fr) 2010-03-09 2010-03-09 Interrupteur electrique haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance
PCT/EP2011/053466 WO2011110557A1 (fr) 2010-03-09 2011-03-08 Interrupteur electrique moyenne et haute tension avec retour sur fermeture et dispositif d'insertion d'une resistance

Publications (2)

Publication Number Publication Date
EP2545574A1 true EP2545574A1 (de) 2013-01-16
EP2545574B1 EP2545574B1 (de) 2015-04-08

Family

ID=42938357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706836.1A Active EP2545574B1 (de) 2010-03-09 2011-03-08 Elektrische mittel- und hochspannungsschalter mit rückstellung beim schliessen und einfügungsvorrichtung mit einschaltwiderstand

Country Status (5)

Country Link
US (1) US8952285B2 (de)
EP (1) EP2545574B1 (de)
CN (1) CN102834887B (de)
FR (1) FR2957451A1 (de)
WO (1) WO2011110557A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3748658B1 (de) 2019-06-04 2022-03-23 General Electric Technology GmbH Kontaktanordnung für einschaltwiderstände

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524887A (de) * 1970-12-14 1972-06-30 Bbc Brown Boveri & Cie Elektrischer Kompressionsschalter
US3914569A (en) * 1974-05-02 1975-10-21 Ite Imperial Corp Puffer interrupter with downstream initiated arc
DE2708546C3 (de) * 1977-02-28 1980-09-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Autopneumatischer Druckgas-Leistungsschalter
FR2450501A1 (fr) 1979-03-02 1980-09-26 Alsthom Cgee Dispositif d'insertion de resistance a la fermeture d'un appareil d'interruption
DE3312797A1 (de) * 1982-05-28 1983-12-01 BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau Hochspannungs-leistungsschalter
US4491707A (en) * 1982-09-07 1985-01-01 S&C Electric Company Electrical contact assembly for a current interrupting unit
DE3322597A1 (de) * 1983-05-31 1984-12-06 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau Druckgasschalter
DE59200933D1 (de) 1991-04-12 1995-01-26 Gec Alsthom T & D Ag Druckgasschalter.
FR2688624A1 (fr) * 1992-03-10 1993-09-17 Alsthom Gec Contact a inertie pour disjoncteur permettant l'insertion temporaire d'une impedance.
FR2786606B1 (fr) * 1998-11-30 2001-01-05 Alstom Technology Mecanisme d'insertion d'une resistance de fermeture avec un verrouillage a bille
US6787725B2 (en) * 2002-03-21 2004-09-07 Lg Industrial Systems Co., Ltd. Switching mechanism of circuit breaker for gas insulted switchgear
EP1552182B1 (de) 2002-09-30 2006-12-20 Bal Seal Engineering Co., Inc. Geneigte schraubenfedern verschiedener ausführung
DE102010062343A1 (de) * 2010-12-02 2012-06-06 Siemens Aktiengesellschaft Elektrokontaktanordnung
KR101786518B1 (ko) * 2011-04-27 2017-10-18 엘에스산전 주식회사 가스 절연 차단기용 소호부

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011110557A1 *

Also Published As

Publication number Publication date
WO2011110557A1 (fr) 2011-09-15
CN102834887B (zh) 2015-05-20
EP2545574B1 (de) 2015-04-08
US20130119022A1 (en) 2013-05-16
CN102834887A (zh) 2012-12-19
US8952285B2 (en) 2015-02-10
FR2957451A1 (fr) 2011-09-16

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