EP1237169B1 - Hochspannungsschalter mit Federsteuerung und Zusatzfeder für Energie-Rückgewinnung - Google Patents

Hochspannungsschalter mit Federsteuerung und Zusatzfeder für Energie-Rückgewinnung Download PDF

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Publication number
EP1237169B1
EP1237169B1 EP02290446A EP02290446A EP1237169B1 EP 1237169 B1 EP1237169 B1 EP 1237169B1 EP 02290446 A EP02290446 A EP 02290446A EP 02290446 A EP02290446 A EP 02290446A EP 1237169 B1 EP1237169 B1 EP 1237169B1
Authority
EP
European Patent Office
Prior art keywords
spring
breaker
circuit
lever
moving contact
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
EP02290446A
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English (en)
French (fr)
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EP1237169A1 (de
Inventor
Hubert Spiegel
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
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Filing date
Publication date
Application filed by Areva T&D SAS filed Critical Areva T&D SAS
Publication of EP1237169A1 publication Critical patent/EP1237169A1/de
Application granted granted Critical
Publication of EP1237169B1 publication Critical patent/EP1237169B1/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
    • 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
    • H01H2003/3084—Kinetic energy of moving parts recuperated by transformation into potential energy in closing or opening spring to be used in next operation

Definitions

  • the invention relates to a high-voltage electrical circuit breaker, such as a self-blowing and compressed gas circuit breaker, comprising a breaking chamber with at least one movable contact in the chamber which is actuated by means of a mechanical control device.
  • springs for opening or closing the circuit breaker, the control including at least a first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while cocking the circuit breaker; first spring, and wherein an additional spring is provided to exert an additional force which accumulates with the force exerted by the first spring at the beginning of the opening of the circuit breaker.
  • An object of the invention is to provide a particular arrangement of a circuit breaker as defined above, which does not require additional energy to arm the additional spring during closing.
  • Another object of the invention is to propose a particular arrangement of such a circuit breaker which also makes it possible to recover and store part of the kinetic energy of the mobile contact at the end of opening or closing, for use respectively at the beginning of a subsequent closing or opening operation.
  • the subject of the invention is an electric circuit breaker comprising an interrupting chamber with at least one movable contact in the chamber which is actuated by means of a mechanical spring mechanism for opening or closing the circuit breaker, the control including in the at least one first spring exerting a force tending to move the movable contact to open the circuit breaker and a second spring exerting a force tending to move the movable contact to close the circuit breaker while arming the first spring, and wherein an additional spring is provided for exert an additional force that is cumulative to the force exerted by the first spring at the beginning of the opening of the circuit breaker, characterized in that the additional spring is mounted such that before the end of the opening of the circuit breaker, the resultant of the force exerted by the additional spring to move the moving contact is reversed to oppose the movement of the moving contact.
  • the additional spring is armed by the displacement of the moving contact and it is therefore not necessary to use a portion of the energy of the second spring of the control to reset the additional spring when closing the circuit breaker. Since the moving contact essentially moves due to its own kinetic energy at the end of the opening, the additional spring can be used to recover and store a part of this kinetic energy that is otherwise conventionally consumed in a damping device.
  • the control comprises a rotary shaft coupled in motion to the movable contact and rotated alternately by the first or the second spring.
  • the additional spring is coupled to the rotary shaft via a lever attached to the shaft and occupying two extreme angular positions corresponding to the positions of the movable contact when the circuit breaker is respectively open or closed.
  • the force exerted by the additional spring on the lever is oriented so that its rotational component changes direction when the lever passes through an intermediate angular position moving from an extreme angular position to the other extreme angular position.
  • the lever functions as a pendulum with the additional spring.
  • the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the first spring, which tends to accelerate the speed of displacement of the movable contact.
  • the resultant of the force exerted by the additional spring accumulates with that of the force exerted by the second spring, so that it is possible to reduce the energy of the control necessary to switch on the circuit breaker.
  • the additional spring is coupled to the lever by means of a return pulley which makes it possible to dispose the additional spring near the breaking chamber of the circuit breaker in order to reduce the current. Congestion circuit breaker.
  • This additional spring is preferably always armed in compression.
  • the lever connected to the additional spring is a triangle-shaped lever having a vertex coincident with the rotary shaft, two other vertices being respectively coupled to the movable contact and the additional spring.
  • circuit breaker An embodiment of the circuit breaker according to the invention is described below in more detail and illustrated in the drawings.
  • the figure 1 very schematically represents a circuit breaker according to the invention in the closed position.
  • the figure 2 very schematically represents the circuit breaker of the figure 1 but in the open position.
  • reference numeral 1 designates a breaking chamber of a circuit breaker, for example a breaking chamber with auto-blow and reduced gas compression of an electric circuit breaker.
  • the interrupting chamber is generally filled with a dielectric gas at a pressure of a few bars, such as SF6.
  • the reference 2 designates a movably mounted contact, for example in translation, in the interrupting chamber.
  • This movable contact 2 is moved by a mechanical spring control 3 to open or close the circuit breaker.
  • the control 3 comprises in particular a main rotary shaft 4 on which is fixed a drive lever 5 which is coupled to the movable contact 2 by an articulated mechanical connection 6 so that the rotational movement of the shaft 4 and therefore the lever 5 is converted for example into a translational movement of the movable contact 2 in the chamber 1.
  • the reference 7 designates the trigger spring of the control 3 used to open the circuit breaker.
  • the spring 7 works on the shaft 4 by means of a lever 8 integral with the shaft 4 and a chain 9 stretched between the free end of the lever 8 and the spring 7.
  • the spring 7 is armed and exerts a return torque on the lever 8 tending to rotate the shaft 4 in the direction indicated by the arrow O.
  • a releasable triggering catch CO is provided to block the rotation of the shaft 4 when the circuit breaker is closed. After an opening order of the circuit breaker, this pawl CO is unlocked, which causes the rotation of the shaft 4 and the angular displacement of the lever 5, which displacement is transformed by the link 6 into a translational movement of the moving contact 2 .
  • the mechanical control 3 further comprises a system for closing the circuit breaker, which comprises in particular a spring 10 working on an engagement shaft 11 via a crank wheel 12 integral with the shaft 11.
  • This wheel crank 12 is a toothed wheel which comprises a crankpin 13 connected by a chain 14 to the spring 10. It is here coupled to an electric motor 15 via a gear train 16, the motor 15 serving to arm the spring 10 after closing the circuit breaker.
  • the shaft 11 carries an engagement cam 17 on which is engaged a roller lever 18 integral with the shaft 4. When the engagement spring 10 is armed, it exerts a restoring force on the wheel 12 tending to rotate the shaft 11 in the direction indicated by the arrow F.
  • a releasable locking pawl CF is provided to block the rotation of the engagement shaft 11.
  • this pawl CF is unlocked, which causes the rotation of the shaft 11 and the angular displacement of the cam 17 in the direction of the arrow F.
  • the rotational movement of the cam 17 is transmitted to the roller lever 18, this which causes the rotation of the shaft 4 in the opposite direction of the arrow O.
  • the spring 7, which was expanded in the open position of the circuit breaker, is again armed when the circuit breaker closes due to the rotation of the tree 4.
  • the circuit breaker is then closed and the rotation of the shaft 4 is blocked by the triggering paw CO.
  • the spring 10 is then turned back on using the motor 15 and the rotation of the shaft 11 is blocked by the locking pawl CF.
  • the position of the command 3 is then that of figure 1 . In this position, the control 3 is ready for an opening sequence opening opening of the circuit breaker.
  • the spring 7 relaxes and exerts a restoring force causing the shaft 4 to rotate in the direction indicated by the arrow O, which causes a displacement of the movable contact 2 leading to the complete opening of the circuit breaker.
  • the kinetic energy of the mobile contact remaining available at the end of opening is consumed in a damper 19 coupled to the shaft 4.
  • the circuit breaker is closed by unlocking the pawl CF, which causes the relaxation of the spring 10 and causes the rotation of the shaft 11 in the direction of the arrow F.
  • the rotational movement of the shaft 11 is transmitted to the shaft 4 via the cam 17 and the lever 18, but in the opposite direction, which simultaneously causes the displacement of the contact.
  • movable 2 to a fully closed position of the circuit breaker and the power of the spring 7 via the lever 8.
  • the spring 10 is then switched back on using the motor 15 as indicated above.
  • an additional spring 20 is coupled to the shaft 4 to exert on the latter a return torque contributing on the one hand to the displacement of the moving contact at the beginning of opening of the circuit breaker and secondly to the slowdown of this displacement at the end of opening.
  • the spring 20 is coupled to the shaft 4 by means of the lever 5 which is here a triangular lever having a vertex coincident with the shaft 4 and two other vertices respectively coupled to the movable contact 2 and the additional spring 20.
  • the top P of the lever 5 coupled to the spring 20 occupies two extreme angular positions respectively corresponding to the two positions of the movable contact 2 when the circuit breaker is completely closed or completely open.
  • the additional spring 20 is armed to the maximum.
  • the extreme angular position of the lever 5 corresponding to the complete closing of the circuit breaker is indicated by the reference E1 while the other extreme angular position of the lever 5 corresponding to the complete opening of the circuit breaker is indicated by the reference E0 on the figure 2 .
  • the angular travel of the lever 5 and therefore of the vertex P is about 60 °.
  • the force vector exerted by the spring always has the same direction since the spring 20 is always armed either in compression or tension.
  • the spring 20 is always more or less reinforced in compression.
  • the resultant of this force exerts a torque on the shaft 4 and changes direction between the extreme positions E1 and E0.
  • the spring 20 expands first until the lever 5 passes through its position. intermediate angular PM. During this first angular displacement of the lever 5, the restoring torque exerted by the spring 20 on the rotary shaft 4 is added to that exerted by the spring 7 on the same shaft 4, and contributes to driving the shaft 4 in rotation . After crossing the lever 5 of its neutral position, the spring 20 is progressively armed since the restoring torque that it exerts on the lever 5 is reversed. The spring 20 then opposes the angular movement of the lever 5 and thus the displacement of the movable contact 2.
  • the intermediate angular position of the lever 5 is chosen such that during its displacement from its intermediate angular position PM to its extreme angular position E0 during an opening phase of the circuit breaker, the spring 2 accumulates and stores part of the kinetic energy of the moving contact which is normally consumed in the damper 19 at the end of opening.
  • the energy stored in the spring 20 at the end of opening is restored at the beginning of the subsequent closing phase and is added to that provided by the spring 10 to drive the shaft 4 in rotation.
  • the energy stored by the spring 20 at the end of closing is restored at the beginning of the subsequent opening phase and is added to that provided by the spring 7 to drive the shaft 4 in rotation.
  • the additional spring 20 is fully armed at the end of each opening or closing operation, thanks to the kinetic energy of the moving contact 2.
  • the spring 20 is calibrated in an adequate manner with respect to to the triggering spring 7 and the triggering spring 10 so that it can be cocked until the lever 5 occupies an extreme angular position.
  • the spring 20 is disposed inside the mechanical control 3, and is coupled to the lever 5 by a chain engaged on a return pulley 21.
  • a chain engaged on a return pulley 21 Such an arrangement makes it possible to place the spring 20 close to the chamber of cut to reduce the size of the circuit breaker.
  • the lever 5 can also be coupled to the spring 20 by an articulated connection.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (5)

  1. Elektrischer Schalter, enthaltend eine Schaltkammer (1) mit zumindest einem in der Kammer beweglichen Kontakt (2), der mittels einer mechanischen Federbetätigung (3) betätigt wird, um den Schalter zu öffnen bzw. zu schließen, wobei die Betätigung zumindest eine erste Feder (7) enthält, die eine Kraft ausübt, welche dazu strebt, den beweglichen Kontakt zu verlagern, um den Schalter zu öffnen, sowie eine zweite Feder (10), die eine Kraft ausübt, welche dazu strebt, den beweglichen Kontakt zu verlagern, um den Schalter zu schließen und dabei die erste Feder (7) zu spannen, und wobei eine zusätzliche Feder (20) vorgesehen ist, um eine zusätzliche Kraft auszuüben, die zur von der ersten Feder (7) ausgeübten Kraft bei beginnender Öffnung des Schalters hinzukommt, dadurch gekennzeichnet, dass die zusätzliche Feder (20) derart gelagert ist, dass vor Beendigung der Öffnung des Schalters die Resultierende aus der von der Zusatzfeder ausgeübten Kraft zum Verlagern des beweglichen Kontakts umgekehrt wird, um der Verlagerung des beweglichen Kontakts entgegenzuwirken.
  2. Schalter nach Anspruch 1, wobei die Betätigung eine drehbare Welle (4) aufweist, die mit dem beweglichen Kontakt (2) bewegungsgekoppelt und abwechselnd von der ersten (7) und von der zweiten Feder (10) drehend mitgenommen wird, und wobei die Zusatzfeder (20) über einen Hebel (5) mit der drehbaren Welle (4) gekoppelt ist, der an die drehbare Welle befestigt ist und zwei Endwinkelstellungen (E0, E1) einnimmt, die den Stellungen des beweglichen Kontakt entsprechen, wenn der Schalter geöffnet bzw. geschlossen ist, wobei die von der Zusatzfeder (20) auf den Hebel (5) ausgeübte Kraft derart ausgerichtet ist, dass deren Rotationskomponente die Richtung ändert, wenn der Hebel (5) über eine Zwischenwinkelstellung (PM) tritt, indem er sich von einer Endwinkelstellung in die andere Endwinkelstellung verlagert.
  3. Schalter nach Anspruch 2, wobei die Zusatzfeder (20) über eine Umlenkrolle (21) mit dem Hebel (5) gekoppelt ist.
  4. Schalter nach Anspruch 3, wobei die Zusatzfeder (20) druckbeaufschlagt ist.
  5. Schalter nach einem der Ansprüche 2 bis 4, wobei der Hebel (5) ein dreieckförmiger Hebel ist, der mit seinem einen Scheitel mit der drehbaren Welle zusammenfällt und mit seinen beiden weiteren Scheiteln mit dem beweglichen Kontakt (2) bzw. mit der Zusatzfeder (20) gekoppelt ist.
EP02290446A 2001-03-01 2002-02-22 Hochspannungsschalter mit Federsteuerung und Zusatzfeder für Energie-Rückgewinnung Expired - Lifetime EP1237169B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0102784 2001-03-01
FR0102784A FR2821696B1 (fr) 2001-03-01 2001-03-01 Disjoncteur haute tension ayant une commande a ressorts avec un ressort additionnel de recuperation d'energie

Publications (2)

Publication Number Publication Date
EP1237169A1 EP1237169A1 (de) 2002-09-04
EP1237169B1 true EP1237169B1 (de) 2010-04-07

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EP02290446A Expired - Lifetime EP1237169B1 (de) 2001-03-01 2002-02-22 Hochspannungsschalter mit Federsteuerung und Zusatzfeder für Energie-Rückgewinnung

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Country Link
US (1) US6667452B2 (de)
EP (1) EP1237169B1 (de)
DE (1) DE60235855D1 (de)
FR (1) FR2821696B1 (de)

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Publication number Priority date Publication date Assignee Title
US7368677B2 (en) * 2005-12-14 2008-05-06 Eaton Corporation Reverse bias hatchet reset spring
DE102008035871B4 (de) * 2008-08-01 2011-03-24 Abb Technology Ag Nockenscheibe und Federwegschalter für einen Federspeicherantrieb sowie Federspeicherantrieb
ES2462751T3 (es) 2009-11-03 2014-05-26 Abb Technology Ag Un accionador operado por resorte para un aparato de conmutación eléctrica
EP2317529B1 (de) 2009-11-03 2017-04-19 ABB Schweiz AG Federbetriebene Betätigung einer elektrischen Schaltvorrichtung
ES2465000T3 (es) 2009-11-03 2014-06-04 Abb Technology Ag Un accionador operado por resorte para un aparato de conmutación eléctrica
CN103907168B (zh) * 2011-10-21 2016-11-23 株式会社东芝 气体断路器
CN104952650B (zh) * 2014-03-31 2018-02-23 西门子公司 用于气体绝缘断路器中储能装置的离合机构及其气体绝缘断路器
US9373456B2 (en) 2014-04-24 2016-06-21 Eaton Corporation Circuit breakers with clock spring drives and/or multi-lobe drive cams and related actuators and methods
US9472359B2 (en) 2014-04-24 2016-10-18 Eaton Corporation Trip latch assemblies for circuit breakers and related circuit breakers
EP3208817B1 (de) * 2016-02-16 2018-11-14 ABB Schweiz AG Federbetätigter aktuator für eine elektrische vorrichtung
DE102016210466B4 (de) * 2016-06-14 2019-11-14 Siemens Aktiengesellschaft Federspeicherantrieb für einen Hochspannungs-Leistungsschalter und Verfahren zum Betrieb des Federspeicherantriebs
EP3264432B1 (de) 2016-06-28 2019-01-09 ABB Schweiz AG Federbetätigter aktuator
DE102019204443A1 (de) * 2019-03-29 2020-10-01 Siemens Aktiengesellschaft Stromunterbrechersystem
DE102020209017B4 (de) * 2020-07-20 2025-03-27 Siemens Aktiengesellschaft Fehlererkennung in Federspeichersystemen von Mittelspannungsleistungsschaltern

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GB708191A (en) * 1951-04-23 1954-04-28 Reyrolle A & Co Ltd Improvements relating to spring-closed electric circuit-breakers
JPS5422581A (en) * 1977-07-21 1979-02-20 Mitsubishi Electric Corp Switching device
ES2034111T3 (es) * 1987-12-14 1993-04-01 Sprecher Energie Ag Acumulador de fuerza elastica para un interruptor de alta tension.
EP0658909B1 (de) 1993-12-13 1996-10-23 GEC Alsthom T&D AG Antriebsvorrichtung für einen Leistungsschalter
FR2763740B1 (fr) * 1997-05-26 1999-07-16 Gec Alsthom T & D Ag Mecanisme d'entrainement a ressort pour un appareil de commutation, en particulier un disjoncteur
FR2770929B1 (fr) * 1997-11-13 2000-01-28 Alsthom Gec Mecanisme d'entrainement a ressort pour un appareil de commutation, en particulier un disjoncteur

Also Published As

Publication number Publication date
US6667452B2 (en) 2003-12-23
US20020121503A1 (en) 2002-09-05
DE60235855D1 (de) 2010-05-20
FR2821696A1 (fr) 2002-09-06
FR2821696B1 (fr) 2003-04-25
EP1237169A1 (de) 2002-09-04

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