EP1054419B1 - Hochspannungstrennschalter mit schnellbeweglichem Kontakt - Google Patents

Hochspannungstrennschalter mit schnellbeweglichem Kontakt

Info

Publication number
EP1054419B1
EP1054419B1 EP00401303A EP00401303A EP1054419B1 EP 1054419 B1 EP1054419 B1 EP 1054419B1 EP 00401303 A EP00401303 A EP 00401303A EP 00401303 A EP00401303 A EP 00401303A EP 1054419 B1 EP1054419 B1 EP 1054419B1
Authority
EP
European Patent Office
Prior art keywords
contact
piston
spring
disconnector
fixed
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.)
Expired - Lifetime
Application number
EP00401303A
Other languages
English (en)
French (fr)
Other versions
EP1054419A1 (de
Inventor
Olivier Chuniaud
Henri Jouard
Jean Marmonier
Bernard Regnier
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
Areva T&D SAS
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 Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1054419A1 publication Critical patent/EP1054419A1/de
Application granted granted Critical
Publication of EP1054419B1 publication Critical patent/EP1054419B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors
    • 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
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs

Definitions

  • the invention relates to an electrical disconnector comprising a first contact which is mounted movably in an axial direction with respect to a second fixed contact and which cooperates with the latter to establish an electrical connection, a rod which extends in said axial direction and which is maneuvered to move the first contact relative to the second contact.
  • a high voltage electrical disconnector comprising a metal casing in which are arranged the movable and fixed contacts, this envelope being filled with a dielectric gas such as SF6.
  • the operating rod of the movable contact passes through the metal casing and is usually moved in translation by a mechanical control.
  • the patent application EP348645 discloses a two-contact disconnector formed by two coaxial cylinders and moved to connect successively to a fixed arc contact and to a fixed permanent contact (ensuring the passage of the permanent current).
  • the movable contact control mechanism uses two aligned coil springs, separated by a collar attached to an operating rod which is coaxial with them.
  • the disconnector arrangement disclosed allows a speed of movement of the movable contacts much faster than that of the operating rod during closing operations or opening of the electrical connection.
  • the device cited because of the disposition of its fixed contacts, does not allow electric arcs to start only on the fixed arcing contact. Indeed, the isolation distance between the moving arc contact and the fixed permanent contact may become insufficient if the voltage exceeds a certain threshold, in which case it may occur arcing between these contacts, where damaging overvoltages because not attenuated by possible resistances.
  • the subject of the invention is an electrical disconnector comprising a first contact which is mounted movably in an axial direction relative to a second fixed contact and which cooperates with the latter to establish a electrical connection, a rod which extends in said axial direction and which is operated to move the movable contact relative to the fixed contact, characterized in that the movable contact is a hollow tube having an end facing the fixed contact and a second end opposite the first end, in that it comprises a piston sliding inside the movable contact, the piston being mounted on the rod and having a first side oriented towards the fixed contact and a second side opposite the first side, in that a first spring is interposed between the first end of the movable contact and the first side of the piston, in that a second spring is t interposed between the second end of the movable contact and the second side of the piston, in that a first locking system is provided for immobilizing the movable contact in the axial direction during a closing operation at the same time as the
  • This device allows in particular the rapid switching of high voltages while ensuring the passage of strong currents.
  • the electrical disconnector according to the invention is a high-voltage disconnector comprising, in a cylindrical metal casing (not shown in the drawings) which extends in an axial direction A and which is filled with an insulating gas such as SF6, a contact 1 which is fixed and which is for example hollow and a contact 2 mounted movably in the axial direction relative to the fixed contact.
  • the movable contact is for example rod-shaped, is coaxial with the fixed contact 1 and is inserted into the hollow fixed contact to establish an electrical connection.
  • the disconnector further comprises a rod 3 coaxial with the contacts 1 and 2, which extends in the axial direction A and which is operated to move the contact 2 relative to the contact 1.
  • the moving contact 2 is guided in displacement in the axial direction by a fixed tube 4 coaxial with the operating rod 3.
  • the movable contact 2 is a cylindrical hollow tube having a first end 2A which faces the fixed contact 1 and a second end 2B opposite the end 2A traversed by the operating rod 3.
  • a piston 5 is arranged sliding inside the contact 2; it has a first side 5A facing the contact side 1 and a second side 5B opposite the side 5A.
  • the piston 5 is fixed to the end of the rod 3 which slides in the contact 2.
  • the rod 3 may be a worm and the piston 5 can be in this case a nut.
  • the other end of the rod 3 is connected to the control of the disconnector (not shown) which acts here to move in translation the rod 3 in the axial direction A.
  • the control acts here to move the rod 3 and thus the piston 5 to the fixed contact 1 and during an opening operation of the disconnector, the control acts to move the rod 3 and thus the piston 5 in the opposite direction.
  • the disconnector further comprises a first locking system 8, of the retractable ball type, which immobilizes the contact 2 in the axial direction when the rod 3 is operated during a closing operation of the disconnector, at the same time as the first spring 6 is compressed between the piston and the first end 2A of the contact 2.
  • This first locking system is erased after a certain compression of the first spring 6 so that the contact 2 is connected at high speed with the contact 1 under the effect the relaxation of the spring 6 bearing against the piston 5.
  • the isolator further comprises a second locking system 9 which immobilizes the contact 2 in the axial direction when the rod 3 is operated during an opening operation of the disconnector, at the same time as the spring 7 is compressed between the piston 5 and the second end 2B of the contact 2.
  • This second locking system is erased after a certain compression of the spring 7 so that the contact 2 is disconnected from the contact 1 at high speed under the effect of the relaxation of the spring 7 in support against the piston 5.
  • the disconnector according to the invention is in the fully open position.
  • the spring 7 is compressed between the piston 5 and the end 2B of the contact 2.
  • the spring 6 is completely expanded between the end 2A of the contact 2 and the piston 5.
  • the contact 2 is immobilized in the axial direction A in the tube 4 by the retractable ball lock system 8 which is here armed.
  • the rod 3 is moved by a translational maneuver towards the fixed contact 1 as indicated by the arrow on the piston 5; it drives the piston 5 in this direction so that the spring 6 is compressed by the piston 5 against the end 2A of the contact 2 while the spring 7 is expanded.
  • the contact 2 is inserted at high speed in the fixed contact 1 under the action of the spring 6 which expands between the piston 5 and the end 2A of the contact 2.
  • the piston 5 continues to be moved towards the fixed contact 1 and the second ball lock system 9 is armed to immobilize the contact 2 in the axial direction A in the guide tube 4.
  • the moving contact 2 has therefore moved independently of the operating rod 3 and the piston 5.
  • the translational speed of the operating rod 3 and thus of the piston 5 can therefore be much smaller. that the speed of displacement of the movable contact 2.
  • the speed of displacement of the actuating rod 3 and therefore of the piston 5 can also be constant contrary to the speed of displacement of the movable contact 2.
  • the end of the closing operation of the disconnector can be controlled by detecting the extreme position of the piston 5 and the rod 3.
  • the rod 3 is moved away by the fixed contact 1 as indicated by the arrow on the piston 5; it drives the piston 5 in the same direction so that the spring 7 is compressed by the piston 5 against the end 2B of the contact 2 while the spring 6 is expanded.
  • the contact 2 emerges at high speed from the fixed contact 1 under the action of the spring 7 which expands between the piston 5 and the end 2B of the contact 2.
  • the piston 5 continues to be away from the contact fixed 1 and the first ball lock system 8 is armed to immobilize the contact 2 in the axial direction A in the guide tube 4.
  • the moving contact 2 has thus moved again independently of the operating rod 3 and the piston 5.
  • the end of the opening operation of the disconnector can be further controlled by the detection of the position extreme of the piston 5 and the rod 3.
  • Figure 3 shows in greater detail in longitudinal section in the axial direction to an embodiment of a disconnector according to the invention.
  • the operating rod 3 is a rotary worm with rotation axis A.
  • the piston 5 is a nut in which is engaged the worm 3. According to the direction of rotation of the worm 3, the nut 5 moves in translation (without possibility of rotation) in one direction or the other in the axial direction A inside the moving contact 2.
  • the spring 6 and the spring 7 with spirals.
  • FIG. 3 shows the disconnector in the fully open position, the spring 7 being compressed between the nut 5 and the end 2B of the movable contact 2.
  • a cylindrical spool 10 is disposed inside the contact 2 coaxially with the nut 5. This spool slides on the nut 5 and acts on retractable balls 8 and 9 locking systems housed in radial openings 11 of the contact 2 It consists more particularly of two half-drawers 10A and 10B independent of each other in displacement in the axial direction A.
  • the half-slide 10A comprises a radial end rib 12A on which the nut 5 comes into abutment when the latter is moved towards the fixed contact 1.
  • the half-slide 10B also comprises a radial end rib 12B on which the nut 5 comes into abutment when the latter is moved away from the fixed contact 1.
  • a spiral spring 13 is disposed between the end rib 12A of the half-slide 10A and a shoulder 2AA provided at the end 2A.
  • the guide tube 4 comprises a first recess 15 in which the ball 8 can engage and a second recess 16 into which the ball 9 can engage; these two recesses 15 and 16 are spaced apart from each other in the axial direction A.
  • the half-drawer 10A includes a first recess 17 in which can fade the ball 8 and the half-drawer 10B comprises a second obviously 18 in which can fade the ball 9; these two recesses 17 and 18 are spaced apart from one another in the axial direction A.
  • the ball 8 When the ball 8 is engaged in the recess 15 of the tube 4, it locks the displacement of the contact 2 in the axial direction A and when the rib 12A of the half-slide 10A is pushed by the nut 5 during the closing phase of the disconnector, the ball 8 comes in front of the recess 17 in which it can be erased to release the displacement of the movable contact 2. Moreover, when the ball 9 is engaged in the recess 16 of the tube 4, it locks the displacement of the contact 2 in the axial direction A and when the rib 12B of the half-slide 10B is pushed by the nut 5 during the opening phase of the disconnector, the ball 9 comes in front of the recess 18 in which it can fade to release the movement of the moving contact 2.
  • the fixed contact 1 ' is equipped with resistors R making it possible to obtain a particularly effective apparatus for protecting the connected equipment against transient overvoltages at very high frequencies when switchover of the disconnector on capacitive current.
  • the fixed contact 1 ' comprises an arc contact or cover 21 directly and only connected to resistors R. This cover has rounded corners providing a corona-shielding effect, and a slightly greater internal diameter to the diameter of the movable contact 2, so that the movable contact does not touch the cover at insertion.
  • the permanent contact 22 In order to also be able to switch high bus transfer currents without any risk of melting the contacts, the permanent contact 22 conventionally houses along its axis of symmetry a retractable arc contact 24 formed of a conducting rod coupled to a spring.
  • This rod also shown in the fixed contact 1 in Figure 3, is made of a material insensitive to heating, and can withstand a strong current at the moment when the movable contact 2 pushes it.
  • the heating produced is limited in that the connection of the movable contact to the permanent current contact 22 is carried out very shortly afterwards.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Circuit Breakers (AREA)

Claims (5)

  1. Elektrischer Trennschalter mit einem ersten Kontakt (2), der in einer axialen Richtung (A) gegenüber einem in dieser Richtung feststehenden zweiten Kontakt (1) beweglich gelagert ist und mit letzterem zusammenwirkt, um eine elektrische Verbindung herzustellen, einer Stange (3), die in der axialen Richtung verläuft und betätigt wird, um den beweglichen Kontakt relativ zum feststehenden Kontakt zu verlagern, wobei der bewegliche Kontakt ein Hohlrohr ist, das ein dem feststehenden Kontakt gegenüberliegendes Ende (2a) und ein dem ersten Ende entgegengesetztes zweites Ende (2b) besitzt, dadurch gekennzeichnet, dass er einen innerhalb des beweglichen Kontakts gleitbeweglichen Kolben (5) enthält, wobei der Kolben (5) an der Stange (3) gelagert ist und mit einer ersten Seite zum feststehenden Kontakt hin ausgerichtet und eine der ersten Seite entgegengesetzte zweite Seite aufweist, dass eine erste Feder (6) zwischen dem ersten Ende des beweglichen Kontakts und der ersten Seite des Kolbens eingefügt ist, dass eine zweite Feder (7) zwischen dem zweiten Ende des beweglichen Kontakts und der zweiten Seite des Kolben eingefügt ist, dass ein erstes Verriegelungssystem (8) vorgesehen ist, um den beweglichen Kontakt in der axialen Richtung bei einem Schließvorgang des Trennschalters festzulegen und zugleich die erste Feder zwischen Kolben und erstem Ende des beweglichen Kontakts zusammenzudrücken, wobei dieses erste Verriegelungssystem nach einem gewissen Druck der ersten Feder nachgibt, so dass der bewegliche Kontakt mit dem feststehenden Kontakt unter der Wirkung der Entspannung der ersten Feder verbunden wird, und dass ein zweites Verriegelungssystem (9) vorgesehen ist, um den beweglichen Kontakt in der axialen Richtung bei einem Öffnungsvorgang festzulegen und zugleich die zweite Feder zwischen Kolben und zweitem Ende des beweglichen Kontakts zusammenzudrücken, wobei dieses zweite Verriegelungssystem nach einem gewissen Druck der zweiten Feder nachgibt, so dass der bewegliche Kontakt von dem feststehenden Kontakt unter der Wirkung der Entspannung der zweiten Feder gelöst wird.
  2. Trennschalter nach Anspruch 1, wobei das erste und das zweite Verriegelungssystem versenkbare Kugeln sind.
  3. Trennschalter nach einem der Ansprüche 1 oder 2, wobei die Betätigungsstange eine Schnecke ist und der Kolben eine Mutter, in welche die Schnecke eingreift.
  4. Trennschalter nach einem der Ansprüche 1 oder 2, wobei die Betätigungsstange translatorisch betätigt wird und der Kolben an einem Ende der Stange befestigt ist.
  5. Trennschalter nach einem der Ansprüche 1 bis 4, wobei der feststehende Kontakt einen Dauerstromkontakt (22) sowie einen Lichtbogenkontakt (21) enthält, der mit Widerständen verbunden ist, und wobei der durch Zünden von Lichtbögen (20) bei Annäherung des beweglichen Kontakts erzeugte Strom vollständig durch diese Widerstände tritt.
EP00401303A 1999-05-17 2000-05-12 Hochspannungstrennschalter mit schnellbeweglichem Kontakt Expired - Lifetime EP1054419B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9906212A FR2793945B1 (fr) 1999-05-17 1999-05-17 Sectionneur haute tension a contact mobile deplace a grande vitesse
FR9906212 1999-05-17

Publications (2)

Publication Number Publication Date
EP1054419A1 EP1054419A1 (de) 2000-11-22
EP1054419B1 true EP1054419B1 (de) 2006-08-16

Family

ID=9545641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401303A Expired - Lifetime EP1054419B1 (de) 1999-05-17 2000-05-12 Hochspannungstrennschalter mit schnellbeweglichem Kontakt

Country Status (9)

Country Link
US (1) US6466420B1 (de)
EP (1) EP1054419B1 (de)
JP (1) JP2000353457A (de)
KR (1) KR20010020851A (de)
CN (1) CN1171264C (de)
DE (1) DE60030032T2 (de)
FR (1) FR2793945B1 (de)
ID (1) ID26059A (de)
TW (1) TW476080B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4649739B2 (ja) * 2001-01-09 2011-03-16 ソニー株式会社 冷陰極電界電子放出素子の製造方法
KR100797982B1 (ko) * 2003-04-23 2008-01-24 현대중공업 주식회사 고전압 단로기
US7630189B2 (en) * 2007-05-17 2009-12-08 Energie H.T. International Inc. High voltage disconnecting switch control
US7999416B2 (en) * 2008-04-14 2011-08-16 Emergie H. T. International Inc. Module for controlling a switch in a high voltage electrical substation
ATE544169T1 (de) * 2008-12-18 2012-02-15 Abb Technology Ag Kurzschlussvorrichtung für mittel- und hochspannungsschaltvorrichtungen
EP2544203A1 (de) * 2011-07-04 2013-01-09 ABB Technology AG Elektrischer Hochspannungs-Lasttrenner und Verfahren zum Öffnen desselben
FR2984590B1 (fr) * 2011-12-14 2014-07-04 Alstom Technology Ltd Ensemble conducteur mobile pour sectionneur, comprenant un ressort permettant d'accelerer la separation des contacts d'arc
WO2013153623A1 (ja) * 2012-04-10 2013-10-17 三菱電機株式会社 電力用開閉装置
EP2728602B1 (de) 2012-11-05 2015-01-21 ABB Technology AG Elektrischer Hochspannungs-Lasttrenner und Verfahren zum Öffnen desselben
EP2741305A1 (de) * 2012-12-07 2014-06-11 ABB Technology AG Hochspannungs-Trenner
DE102020211951B4 (de) * 2020-09-24 2024-02-08 Siemens Energy Global GmbH & Co. KG Kurzschluss-Schalteinrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789990A (fr) * 1972-10-12 1973-04-12 Gardy Dispositif de deplacement lineaire rapide d'un element,
US3811022A (en) * 1973-01-09 1974-05-14 Westinghouse Electric Corp Vacuum switch drive mechanism
DE2758264A1 (de) * 1977-12-27 1979-07-05 Bbc Brown Boveri & Cie Antriebsvorrichtung fuer einen elektrischen schalter
US4414449A (en) * 1981-05-26 1983-11-08 Brown Boveri Electric Inc. Quick open and close disconnect switch
US4636602A (en) * 1985-04-10 1987-01-13 S&C Electric Company Linear operating mechanism for electrical switches
DE3832171A1 (de) * 1988-07-01 1990-01-04 Licentia Gmbh Einrichtung zur raschen ein- und ausschaltung von kleinen stroemen fuer trennschalter von v.i.s.
FR2746540B1 (fr) * 1996-03-22 1998-04-24 Gec Alsthom T & D Sa Commande pour disjoncteur a haute tension
FR2747502B1 (fr) * 1996-04-10 1998-05-15 Gec Alsthom T & D Sa Commande a ressorts rectilignes pour disjoncteur a haute tension
FR2748597B1 (fr) * 1996-05-13 1998-06-12 Gec Alsthom T & D Sa Disjoncteur a haute tension avec insertion de resistance a la fermeture

Also Published As

Publication number Publication date
DE60030032D1 (de) 2006-09-28
TW476080B (en) 2002-02-11
KR20010020851A (ko) 2001-03-15
FR2793945A1 (fr) 2000-11-24
ID26059A (id) 2000-11-23
FR2793945B1 (fr) 2001-06-22
US6466420B1 (en) 2002-10-15
DE60030032T2 (de) 2007-02-15
JP2000353457A (ja) 2000-12-19
CN1285604A (zh) 2001-02-28
CN1171264C (zh) 2004-10-13
EP1054419A1 (de) 2000-11-22

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