EP1706880B1 - Control for electric power interrupting device - Google Patents

Control for electric power interrupting device Download PDF

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Publication number
EP1706880B1
EP1706880B1 EP05717675A EP05717675A EP1706880B1 EP 1706880 B1 EP1706880 B1 EP 1706880B1 EP 05717675 A EP05717675 A EP 05717675A EP 05717675 A EP05717675 A EP 05717675A EP 1706880 B1 EP1706880 B1 EP 1706880B1
Authority
EP
European Patent Office
Prior art keywords
contact
closing
spring
opening
dead centre
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.)
Not-in-force
Application number
EP05717675A
Other languages
German (de)
French (fr)
Other versions
EP1706880A1 (en
Inventor
Eric Courbon
Jean-Pierre Dupraz
Serge Poullain
Sylvain Plante
Jean-Luc Thomas
Ernst Suter
Robert Luscher
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 EP1706880A1 publication Critical patent/EP1706880A1/en
Application granted granted Critical
Publication of EP1706880B1 publication Critical patent/EP1706880B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • 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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H2003/268—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor using a linear motor
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/36—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor

Definitions

  • the present invention relates to a device for controlling a high or medium voltage electrical energy cut-off device.
  • electrical breaking device it is here understood generally a circuit breaker, a disconnector or a grounding device.
  • control device is described in particular in the documents WO 00/05735 , WO 96/36922 , or DE 913 665 .
  • the invention poses as a problem to present a circuit breaker control device provided with an improved arrangement to ensure the setting and the maintenance in the closed position of the movable contact, including including a mixed solution that allows the use of a standard motor for assisting the control, together with a mechanical spring arrangement participating in the opening and closing of the contact.
  • the subject of the invention is a circuit-breaker control device intended to open and close this electrical energy cut-off device comprising a movable contact, this control device comprising a motor with a rotary output shaft and being connected to supply means and actuating means transforming the displacement at the output of the motor moving the contact, device also comprising a mechanical spring arrangement participating in the opening and closing of the contact, the spring arrangement comprising two prestressed and antagonistic mechanical springs, a first spring said opening spring ensuring the opening of the contact and a second spring said closure spring ensuring the closure of the contact, the actuating means being biased by each of these two springs separated by a ring, and having a locking arrangement in the open position and in position closing said contact.
  • the actuating means comprise a set of articulated elements ensuring the connection of the rotary shaft and the ring, and, in the closed position of the contact, the set of articulated elements is in abutment against an abutment element near a neutral position called opening dead point, the opening spring being able to drive it to the open position only to exceed this dead point during an opening.
  • the movable contact when the movable contact is in the closed position, it is held in this position due to the fact that the set of articulated elements to which it is connected is blocked in one direction by its abutment. against the stop element, and also in the other direction because it has exceeded the opening dead point and the opening spring can no longer cause displacement. In this position, it is also the mainspring opening which ensures the plating of the assembly of articulated elements against the stop element.
  • the required energy stored in capacity banks is, thanks to this mixed solution, four to six times lower than that of an all-electric solution. This considerably reduces the cost and bulk of these benches.
  • a low voltage converter can be used with a bank of supercapacities as a storage medium.
  • the invention Compared with a control solution solely with mechanical springs, the invention has the following advantages thanks to the presence of the motor.
  • the circuit breaker Since loss compensation occurs during opening or closing, the circuit breaker is always available and does not require a break time after a given cycle of opening and closing. The springs do not need to be recharged.
  • the closing of the circuit breaker can be as fast as the opening because the mechanical energy contained in the closing spring when the circuit breaker is in the open position is equal to that of the opening spring when the circuit breaker is in the closed position.
  • said motor is a motor for assisting and controlling the path of said contact powered by a power converter controlled by a position and speed controller.
  • said regulator ensures a damping of the displacement of said contact at the end of the opening stroke and at the end of the closing stroke.
  • the closed-loop control of the trajectory increases the robustness of the circuit breaker with respect to parametric variations such as, for example, the variation in the stiffness of the springs or the viscosity of the gas contained in the breaking chamber as a function of the temperature.
  • said springs are mounted aligned along an axis, one of their respective ends being in abutment against a spring stop and their opposite ends being separated by said ring.
  • said set of articulated elements comprises a crank driven in rotation by said output shaft and articulated at one end of a connecting rod whose other end is hinged to said ring.
  • said set of articulated elements in the open position of said contact, is close to a neutral position said closing dead point, the closing spring being able to cause it to the closed position to exceed this dead point during a closure.
  • said connecting rod has a U-shaped end shape that partially rotates about the axis of rotation of said crank.
  • Said crank may be rotated by said output shaft via a toothed sector geared to said output shaft and on which it is hinged.
  • it comprises an arrangement for disengaging the action of the closing spring.
  • said disengaging arrangement consists of a displacement device controlled by said stop of the closing spring.
  • control device comprises a thrust device of said set of elements articulated towards its opening dead point.
  • Said thrust device may consist of a striker intended to urge said crank.
  • the Figures 1 and 2 represent a circuit breaker provided with a control device according to an embodiment of the present invention.
  • This circuit breaker comprises a motor 3 for assisting and controlling the path of a movable contact (not shown) intended to cooperate with a fixed contact, here a motor 3 with rotating shaft 12, connected to supply means.
  • these power supply means comprise a power converter 4 controlled by a position and speed regulator 5 by means of a sensor 6 associated with the motor 3.
  • the regulator 5 ensures damping of the movement of the moving contact at the end of the stroke. opening and at the end of the closing race.
  • a capacity bank 7 provides the instantaneous power required for the power supply of the converter 4.
  • the capacity recharge management is performed by a charging unit 8 connected to a DC or AC electrical network.
  • An input and output unit 9 manages the speed and position references according to the opening or closing orders of the circuit breaker.
  • the mobile contact of the circuit breaker is not shown and is connected in known manner to a crank 14 rotating about an axis B parallel to the rotating shaft 12 and offset from the axis A-A '.
  • the drive of the crank 14 is carried out thanks to a toothed sector 13 also rotatable about the axis B, articulated on the crank 14 and geared to the output shaft 12.
  • the drive can be performed by direct centering of the shaft 12 on the axis B.
  • the mechanical spring arrangement comprises two prestressed mechanical springs, a first spring 15 said opening spring ensuring the opening of said contact and a second spring 16 said closing spring ensuring the closure of said contact, these two springs being antagonistic and stiff substantially identical.
  • the prestressing of the two springs allows sufficient energy in the opening spring for the execution of an opening maneuver when the closing spring is released. It also ensures their mechanical stability when the springs are in equilibrium position.
  • the actuating means are biased by each of these two springs 15, 16 and comprise a set of articulated elements abutting against a stop element 19 in the open or closed position.
  • These movable / articulated elements are said crank 14 articulated at a first end of a connecting rod 17 whose other end is articulated on a ring 18.
  • This connecting rod 17 preferably has a U-shaped end shape that partially rotates around the axis of rotation B of the crank 14.
  • the springs 15, 16 are mounted aligned along the axis A-A ', one of their respective ends being in abutment against a spring stop 15A, 16A and their opposite ends being separated by said ring 18 mobile.
  • the crank 14 In the closed position of the contact, the crank 14 is close to an upper dead position position, the opening spring 15 being able to drive it to the open position only to exceed this dead point when an opening. More specifically, in this closed position, the longitudinal axis of the connecting rod 17 connecting its two joints has exceeded to the right its secant position of the axis B.
  • the movable contact is in the closed position, in a configuration as represented on the figure 1 .
  • the motor 3 is active on a stroke corresponding to exceeding the dead point specified above.
  • the transfer of mechanical energy is then effected as soon as this dead point passes from the opening spring 15 to the closing spring 16, the mechanical energy being converted into kinetic energy and compressing the closing spring 16.
  • the motor 3 ensures the control of the path of the moving contact so that it reaches the end of opening stroke at zero speed, as shown in FIG. figure 2 .
  • a closing cycle is carried out analogously.
  • the movable contact is in the open position, in a configuration as shown in FIG. figure 2 .
  • the engine 3 is active on a corresponding race to exceed the dead point specified above.
  • the transfer of mechanical energy is then effected as soon as this dead point passes from the closing spring 16 to the opening 15, the mechanical energy being converted into kinetic energy and compressing the opening spring 15.
  • the motor 3 ensures the control of the path of the moving contact so that it reaches the end of closing stroke at zero speed, as shown in FIG. figure 1 .
  • control device may comprise an arrangement for disengaging the action of the closing spring 16. This variant is represented on the figure 3 .
  • This disengaging arrangement consists of a displacement device controlled by the abutment 16A of the closing spring 16. To do this, this abutment 16A can be slid into a cylindrical guide 20 downwards, as seen there figure 3 . This movement is controlled by a gear arrangement 21 meshing on a solitary toothed rod 22 of the abutment 16A in question. This gear arrangement 21 maintains the stopper 16A in the upper position as shown in FIG. figure 3 , in normal operation.
  • a striker 23 is also provided, arranged to be able to operate the crank 14 so that it exceeds its upper dead point. The activation of this striker 23 allows the opening of the contact, once the closing spring 16 disengaged.
  • Striker 23 consists of a system transforming electrical energy into mechanical energy. It may be a coil actuating a spring releasing latch or a solenoid.
  • the closing spring 16 is compressed again by raising the stop 16A and the control device can resume normal operation.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Linear Motors (AREA)
  • Protection Of Static Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

The device has a linear motor (3) controlling a path of a mobile contact and connected to a power converter (4) controlled by a position and speed controller (5). A capacitor (7) supplies power to the converter. A spring arrangement has opening and closing springs (10, 11) ensuring opening and closing of the contact, respectively, and activating a stop transforming output movement of the motor into movement of the contact.

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un dispositif de commande de dispositif de coupure d'énergie électrique haute ou moyenne tension. Par dispositif de coupure électrique, il est ici entendu de façon générale un disjoncteur, un sectionneur ou un dispositif de mise à la terre.The present invention relates to a device for controlling a high or medium voltage electrical energy cut-off device. By electrical breaking device, it is here understood generally a circuit breaker, a disconnector or a grounding device.

Un tel dispositif de commande est notamment décrit dans les documents WO 00/05735 , WO 96/36922 , ou encore DE 913 665 .Such a control device is described in particular in the documents WO 00/05735 , WO 96/36922 , or DE 913 665 .

L'invention se pose comme problème de présenter un dispositif de commande de disjoncteur muni d'un agencement amélioré pour assurer la mise et le maintien en position de fermeture du contact mobile, en intégrant notamment une solution mixte qui permet d'utiliser un moteur standard d'assistance à la commande, conjointement avec un agencement de ressort mécanique participant à l'ouverture et à la fermeture du contact.The invention poses as a problem to present a circuit breaker control device provided with an improved arrangement to ensure the setting and the maintenance in the closed position of the movable contact, including including a mixed solution that allows the use of a standard motor for assisting the control, together with a mechanical spring arrangement participating in the opening and closing of the contact.

Pour ce faire, l'invention a pour objet un dispositif de commande de disjoncteur destiné à ouvrir et fermer ce dispositif de coupure d'énergie électrique comprenant un contact mobile, ce dispositif de commande comprenant un moteur à arbre de sortie rotatif et étant connecté à des moyens d'alimentation et des moyens d'actionnement transformant le déplacement en sortie du moteur en déplacement du contact, dispositif comprenant également un agencement de ressort mécanique participant à l'ouverture et à la fermeture du contact, l'agencement de ressort comportant deux ressorts mécaniques précontraints et antagonistes, un premier ressort dit ressort d'ouverture assurant l'ouverture du contact et un second ressort dit ressort de fermeture assurant la fermeture du contact, les moyens d'actionnement étant sollicités par chacun de ces deux ressorts séparés par une bague, et comportant un agencement d'immobilisation en position d'ouverture et en position de fermeture dudit contact. Selon l'invention, les moyens d'actionnement comportent un ensemble d'éléments articulés assurant la liaison de l'arbre rotatif et de la bague, et, en position de fermeture du contact, l'ensemble d'éléments articulés est en butée contre un élément de butée à proximité d'une position de point mort dit point mort d'ouverture, le ressort d'ouverture ne pouvant l'entraîner vers la position d'ouverture qu'au dépassement de ce point mort lors d'une ouverture.To do this, the subject of the invention is a circuit-breaker control device intended to open and close this electrical energy cut-off device comprising a movable contact, this control device comprising a motor with a rotary output shaft and being connected to supply means and actuating means transforming the displacement at the output of the motor moving the contact, device also comprising a mechanical spring arrangement participating in the opening and closing of the contact, the spring arrangement comprising two prestressed and antagonistic mechanical springs, a first spring said opening spring ensuring the opening of the contact and a second spring said closure spring ensuring the closure of the contact, the actuating means being biased by each of these two springs separated by a ring, and having a locking arrangement in the open position and in position closing said contact. According to the invention, the actuating means comprise a set of articulated elements ensuring the connection of the rotary shaft and the ring, and, in the closed position of the contact, the set of articulated elements is in abutment against an abutment element near a neutral position called opening dead point, the opening spring being able to drive it to the open position only to exceed this dead point during an opening.

Ainsi, dans le dispositif selon l'invention, lorsque le contact mobile est en position de fermeture, il est maintenu dans cette position en raison du fait que l'ensemble d'éléments articulés auquel il est lié est bloqué dans un sens par sa butée contre l'élément de butée, et également dans l'autre sens du fait qu'il a dépassé le point mort d'ouverture et que le ressort d'ouverture ne peut donc plus provoquer de déplacement. Dans cette position, c'est d'ailleurs le ressort d'ouverture qui assure le plaquage de l'ensemble d'éléments articulés contre l'élément de butée.Thus, in the device according to the invention, when the movable contact is in the closed position, it is held in this position due to the fact that the set of articulated elements to which it is connected is blocked in one direction by its abutment. against the stop element, and also in the other direction because it has exceeded the opening dead point and the opening spring can no longer cause displacement. In this position, it is also the mainspring opening which ensures the plating of the assembly of articulated elements against the stop element.

Ce maintien en position de fermeture étant exclusivement mécanique, il peut par conséquent être conservé en cas de panne d'alimentation électrique du moteur.This holding in the closed position being exclusively mechanical, it can therefore be kept in case of power failure of the engine.

De plus, toujours en cas de défaillance du réseau électrique ou du convertisseur, il reste néanmoins possible d'ouvrir le disjoncteur grâce au ressort d'ouverture, après que l'ensemble d'éléments articulés ait été amené à dépasser le point mort d'ouverture.In addition, always in case of failure of the electrical network or converter, it is still possible to open the circuit breaker through the opening spring, after the set of articulated elements has been brought to exceed the dead point of opening.

L'énergie nécessaire stockée dans des bancs de capacités est, grâce à cette solution mixte, quatre à six fois inférieure à celle d'une solution tout électrique. Ceci réduit considérablement le coût et l'encombrement de ces bancs.The required energy stored in capacity banks is, thanks to this mixed solution, four to six times lower than that of an all-electric solution. This considerably reduces the cost and bulk of these benches.

Egalement, un moteur de puissance moindre est nécessaire. Cette puissance électrique est de quatre à dix fois plus faible que celle nécessaire à la solution tout électrique. Un moteur standard peut être utilisé sans nécessité de développement supplémentaire pour cette application.Also, a lower power motor is needed. This electric power is four to ten times lower than that required for the all-electric solution. A standard engine can be used without the need for further development for this application.

Il en est de même pour le dimensionnement du convertisseur de puissance. Un convertisseur basse tension peut être employé avec un banc de supercapacités comme moyen de stockage.It is the same for the sizing of the power converter. A low voltage converter can be used with a bank of supercapacities as a storage medium.

Par rapport à une solution de commande uniquement à ressorts mécaniques, l'invention présente les avantages suivants grâce à la présence du moteur.Compared with a control solution solely with mechanical springs, the invention has the following advantages thanks to the presence of the motor.

Le nombre de pièces en mouvement et de liaisons de mécanisme est considérablement réduit. Ceci implique moins de perte par frottement et donc l'utilisation de ressorts plus petits. Ceci entraîne également une maintenance moins fréquente et moins lourde.The number of moving parts and mechanism links is greatly reduced. this implies less friction loss and therefore the use of smaller springs. This also results in less frequent and less cumbersome maintenance.

Comme la compensation des pertes s'effectue pendant l'ouverture ou la fermeture, le disjoncteur est toujours disponible et ne requiert pas de temps de pause après un cycle donné d'ouvertures et de fermetures. Les ressorts n'ont pas besoin d'être rechargés.Since loss compensation occurs during opening or closing, the circuit breaker is always available and does not require a break time after a given cycle of opening and closing. The springs do not need to be recharged.

La fermeture du disjoncteur peut être aussi rapide que l'ouverture car l'énergie mécanique contenue dans le ressort de fermeture lorsque le disjoncteur est en position d'ouverture est égale à celle du ressort d'ouverture quand le disjoncteur est en position de fermeture.The closing of the circuit breaker can be as fast as the opening because the mechanical energy contained in the closing spring when the circuit breaker is in the open position is equal to that of the opening spring when the circuit breaker is in the closed position.

Selon un mode de réalisation préféré de l'invention, ledit moteur est un moteur d'assistance et de contrôle de la trajectoire dudit contact alimenté par un convertisseur de puissance commandé par un régulateur de position et de vitesse.According to a preferred embodiment of the invention, said motor is a motor for assisting and controlling the path of said contact powered by a power converter controlled by a position and speed controller.

Et avantageusement, ledit régulateur assure un amortissement du déplacement dudit contact en fin de course d'ouverture et en fin de course de fermeture.And advantageously, said regulator ensures a damping of the displacement of said contact at the end of the opening stroke and at the end of the closing stroke.

Grâce au moteur d'asservissement, il n'est plus besoin d'amortisseur de fin de course, puisque le moteur assure par son asservissement l'amortissement nécessaire pour arriver à une vitesse nulle en fin de course.Thanks to the servo motor, there is no longer need for end-of-stroke damper, since the motor ensures by its servocontrolling the damping necessary to reach a zero speed at the end of the race.

La commande en boucle fermée de la trajectoire augmente la robustesse du disjoncteur vis à vis des variations paramétriques telles que, par exemple, la variation de la raideur des ressorts ou la viscosité du gaz contenu dans la chambre de coupure en fonction de la température.The closed-loop control of the trajectory increases the robustness of the circuit breaker with respect to parametric variations such as, for example, the variation in the stiffness of the springs or the viscosity of the gas contained in the breaking chamber as a function of the temperature.

De préférence, lesdits ressorts sont montés alignés suivant un axe, l'une de leurs extrémités respectives étant en butée contre une butée de ressort et leurs extrémités en vis à vis étant séparées par ladite bague.Preferably, said springs are mounted aligned along an axis, one of their respective ends being in abutment against a spring stop and their opposite ends being separated by said ring.

De préférence, ledit ensemble d'éléments articulés comprend une manivelle entraînée en rotation par ledit arbre de sortie et articulée à une extrémité d'une bielle dont l'autre extrémité est articulée sur ladite bague.Preferably, said set of articulated elements comprises a crank driven in rotation by said output shaft and articulated at one end of a connecting rod whose other end is hinged to said ring.

Avantageusement, en position d'ouverture dudit contact, ledit ensemble d'éléments articulés est à proximité d'une position de point mort dit point mort de fermeture, le ressort de fermeture ne pouvant l'entraîner vers la position de fermeture qu'au dépassement de ce point mort lors d'une fermeture.Advantageously, in the open position of said contact, said set of articulated elements is close to a neutral position said closing dead point, the closing spring being able to cause it to the closed position to exceed this dead point during a closure.

Ainsi, ici encore, lorsque le contact mobile est en position d'ouverture, il est maintenu dans cette position en raison du fait que l'ensemble d'éléments articulés auquel il est lié est bloqué dans un sens par sa butée contre l'élément de butée, et également dans l'autre sens du fait qu'il a dépassé le point mort de fermeture et que le ressort de fermeture ne peut donc plus provoquer de déplacement. Dans cette position, c'est d'ailleurs le ressort de fermeture qui assure le plaquage de l'ensemble d'éléments articulés contre l'élément de butée. Ce maintien en position d'ouverture étant exclusivement mécanique, il peut par conséquent être conservé en cas de panne d'alimentation électrique du moteur.Thus, here again, when the movable contact is in the open position, it is held in this position due to the fact that the set of articulated elements to which it is connected is blocked in one direction by its abutment against the element. stop, and also in the other direction because it has exceeded the closing dead point and the closing spring can no longer cause displacement. In this position, it is also the closing spring which ensures the plating of the assembly of articulated elements against the abutment element. This holding in the open position being exclusively mechanical, it can therefore be kept in case of power failure of the engine.

Avantageusement, ladite bielle présente une forme d'extrémité en U assurant sa rotation partielle autour de l'axe de rotation de ladite manivelle.Advantageously, said connecting rod has a U-shaped end shape that partially rotates about the axis of rotation of said crank.

Ladite manivelle peut être entraînée en rotation par ledit arbre de sortie par l'intermédiaire d'un secteur dentée engrené sur ledit arbre de sortie et sur lequel elle est articulée.Said crank may be rotated by said output shaft via a toothed sector geared to said output shaft and on which it is hinged.

Selon une variante, il comporte un agencement de débrayage de l'action du ressort de fermeture.According to one variant, it comprises an arrangement for disengaging the action of the closing spring.

De préférence, ledit agencement de débrayage consiste en un dispositif de déplacement commandé de ladite butée du ressort de fermeture.Preferably, said disengaging arrangement consists of a displacement device controlled by said stop of the closing spring.

Avantageusement, le dispositif de commande comprend un dispositif de poussée dudit ensemble d'éléments articulés vers son point mort d'ouverture.Advantageously, the control device comprises a thrust device of said set of elements articulated towards its opening dead point.

Ledit dispositif de poussée peut consister en un percuteur destiné à solliciter ladite manivelle.Said thrust device may consist of a striker intended to urge said crank.

D'autres avantages et caractéristiques de l'invention apparaîtront dans la description détaillée non limitative ci-dessous.Other advantages and features of the invention will become apparent in the detailed non-limiting description below.

Brève description des dessinsBrief description of the drawings

  • La figure 1 est une vue en coupe longitudinale d'un dispositif de commande selon un mode de réalisation préféré de la présente invention, en position de fermeture du contact mobile ;The figure 1 is a longitudinal sectional view of a control device according to a preferred embodiment of the present invention, in the closed position of the movable contact;
  • La figure 2 est une vue en coupe longitudinale d'un dispositif de commande selon ce mode de réalisation préféré, en position d'ouverture du contact mobile ; etThe figure 2 is a longitudinal sectional view of a control device according to this preferred embodiment, in the open position of the movable contact; and
  • La figure 3 est une vue en coupe longitudinale d'une variante de ce mode de réalisation, en position de fermeture du contact mobile.The figure 3 is a longitudinal sectional view of a variant of this embodiment, in the closed position of the movable contact.
Description détaillée d'un mode de réalisation préféréDetailed description of a preferred embodiment

Les figures 1 et 2 représentent un disjoncteur pourvu d'un dispositif de commande selon un mode de réalisation de la présente invention.The Figures 1 and 2 represent a circuit breaker provided with a control device according to an embodiment of the present invention.

Ce disjoncteur comprend un moteur 3 d'assistance et de contrôle de la trajectoire d'un contact mobile (non représenté) destiné à coopérer avec un contact fixe, ici un moteur 3 à arbre rotatif 12, connecté à des moyens d'alimentation.This circuit breaker comprises a motor 3 for assisting and controlling the path of a movable contact (not shown) intended to cooperate with a fixed contact, here a motor 3 with rotating shaft 12, connected to supply means.

Plus précisément, ces moyens d'alimentation comprennent un convertisseur de puissance 4 commandé par un régulateur de position et de vitesse 5 grâce à un capteur 6 associé au moteur 3. Le régulateur 5 assure un amortissement du déplacement du contact mobile en fin de course d'ouverture et en fin de course de fermeture.More specifically, these power supply means comprise a power converter 4 controlled by a position and speed regulator 5 by means of a sensor 6 associated with the motor 3. The regulator 5 ensures damping of the movement of the moving contact at the end of the stroke. opening and at the end of the closing race.

Un banc de capacités 7 fournit la puissance instantanée nécessaire pour l'alimentation du convertisseur 4. La gestion de la recharge des capacités est réalisée par une unité de charge 8 reliée à un réseau électrique continu ou alternatif. Une unité d'entrées et de sorties 9 gère les références de vitesse et de position en fonction des ordres d'ouverture ou de fermeture du disjoncteur.A capacity bank 7 provides the instantaneous power required for the power supply of the converter 4. The capacity recharge management is performed by a charging unit 8 connected to a DC or AC electrical network. An input and output unit 9 manages the speed and position references according to the opening or closing orders of the circuit breaker.

Si l'on se réfère à la direction vue selon les figures 1 et 2, l'axe A-A' du dispositif de commande est représenté en position verticale et l'arbre rotatif 12 du moteur 3 est disposé perpendiculaire à cet axe. Ces dispositions relatives sont des exemples de réalisation, toute autre disposition pouvant être envisagée.If one refers to the direction seen according to the Figures 1 and 2 the axis AA 'of the control device is shown in the vertical position and the rotary shaft 12 of the motor 3 is arranged perpendicular to this axis. These relative provisions are exemplary embodiments, any other provision that may be considered.

Le contact mobile du disjoncteur n'est' pas représenté et est relié de façon connue en soi à une manivelle 14 rotative autour d'un axe B parallèle à l'arbre tournant 12 et décalé de l'axe A-A'. L'entraînement de la manivelle 14 est réalisé grâce à un secteur denté 13 également rotatif autour de l'axe B, articulé sur la manivelle 14 et engrené sur l'arbre de sortie 12. En variante non représenté, l'entraînement peut être réalisé par centrage direct de l'arbre 12 sur l'axe B.The mobile contact of the circuit breaker is not shown and is connected in known manner to a crank 14 rotating about an axis B parallel to the rotating shaft 12 and offset from the axis A-A '. The drive of the crank 14 is carried out thanks to a toothed sector 13 also rotatable about the axis B, articulated on the crank 14 and geared to the output shaft 12. As a variant not shown, the drive can be performed by direct centering of the shaft 12 on the axis B.

L'agencement de ressort mécanique comporte deux ressorts mécaniques précontraints, un premier ressort 15 dit ressort d'ouverture assurant l'ouverture dudit contact et un second ressort 16 dit ressort de fermeture assurant la fermeture dudit contact, ces deux ressorts étant antagonistes et de raideur sensiblement identique. La précontrainte des deux ressorts permet une énergie suffisante dans le ressort d'ouverture pour l'exécution d'une manoeuvre d'ouverture lorsque le ressort de fermeture est relâché. Elle assure également leur stabilité mécanique lorsque les ressorts sont en position d'équilibre.The mechanical spring arrangement comprises two prestressed mechanical springs, a first spring 15 said opening spring ensuring the opening of said contact and a second spring 16 said closing spring ensuring the closure of said contact, these two springs being antagonistic and stiff substantially identical. The prestressing of the two springs allows sufficient energy in the opening spring for the execution of an opening maneuver when the closing spring is released. It also ensures their mechanical stability when the springs are in equilibrium position.

Les moyens d'actionnement sont sollicités par chacun de ces deux ressorts 15, 16 et comportent un ensemble d'éléments articulés venant en butée contre un élément de butée 19 en position d'ouverture ou de fermeture. Ces éléments mobiles/articulés sont ladite manivelle 14 articulée à une première extrémité d'une bielle 17 dont l'autre extrémité est articulée sur une bague 18. Cette bielle 17 présente de préférence une forme d'extrémité en U assurant sa rotation partielle autour de l'axe de rotation B de la manivelle 14.The actuating means are biased by each of these two springs 15, 16 and comprise a set of articulated elements abutting against a stop element 19 in the open or closed position. These movable / articulated elements are said crank 14 articulated at a first end of a connecting rod 17 whose other end is articulated on a ring 18. This connecting rod 17 preferably has a U-shaped end shape that partially rotates around the axis of rotation B of the crank 14.

Les ressorts 15, 16 sont montés alignés suivant l'axe A-A', l'une de leurs extrémités respectives étant en butée contre une butée de ressort 15A, 16A et leurs extrémités en vis à vis étant séparées par ladite bague 18 mobile.The springs 15, 16 are mounted aligned along the axis A-A ', one of their respective ends being in abutment against a spring stop 15A, 16A and their opposite ends being separated by said ring 18 mobile.

En position de fermeture comme représenté sur la figure 1 et en position d'ouverture comme représenté sur la figure 2, la bielle 17 est en butée contre l'élément de butée 19.In the closed position as shown on the figure 1 and in the open position as shown on the figure 2 the connecting rod 17 is in abutment against the abutment element 19.

En position de fermeture du contact, la manivelle 14 est à proximité d'une position de point mort supérieur, le ressort d'ouverture 15 ne pouvant l'entraîner vers la position d'ouverture qu'au dépassement de ce point mort lors d'une ouverture. Plus précisément, dans cette position de fermeture, l'axe longitudinal de la bielle 17 reliant ses deux articulations a dépassé vers la droite sa position sécante de l'axe B.In the closed position of the contact, the crank 14 is close to an upper dead position position, the opening spring 15 being able to drive it to the open position only to exceed this dead point when an opening. More specifically, in this closed position, the longitudinal axis of the connecting rod 17 connecting its two joints has exceeded to the right its secant position of the axis B.

Il en est de même en position d'ouverture, comme cela est visible sur la figure 2. La manivelle 14 est à proximité d'une position de point mort inférieur, le ressort de fermeture 16 ne pouvant l'entraîner vers la position de fermeture qu'au dépassement de ce point mort lors d'une fermeture. Plus précisément, dans cette position d'ouverture, l'axe longitudinal de la bielle 17 reliant ses deux articulations a dépassé vers la droite sa position sécante de l'axe BIt is the same in the open position, as is visible on the figure 2 . The crank 14 is close to a lower dead position position, the closing spring 16 being able to drive it to the closed position only to exceed this dead point during a closing. More specifically, in this open position, the longitudinal axis of the connecting rod 17 connecting its two joints has exceeded to the right its secant position of the axis B

Un cycle d'ouverture est maintenant décrit.An opening cycle is now described.

Le contact mobile est en position de fermeture, dans une configuration tel que représentée sur la figure 1. Lorsqu'un ordre d'ouverture est transmis, le moteur 3 est actif sur une course correspondante au dépassement de point mort précisé ci-dessus. Le transfert d'énergie mécanique s'effectue ensuite dès passage de ce point mort à partir du ressort d'ouverture 15 vers le ressort de fermeture 16, l'énergie mécanique étant transformée en énergie cinétique et comprimant le ressort de fermeture 16. Le moteur 3 assure le contrôle de la trajectoire du contact mobile de façon à ce qu'il arrive en fin de course d'ouverture à vitesse nulle, comme représenté sur la figure 2.The movable contact is in the closed position, in a configuration as represented on the figure 1 . When an opening command is transmitted, the motor 3 is active on a stroke corresponding to exceeding the dead point specified above. The transfer of mechanical energy is then effected as soon as this dead point passes from the opening spring 15 to the closing spring 16, the mechanical energy being converted into kinetic energy and compressing the closing spring 16. The motor 3 ensures the control of the path of the moving contact so that it reaches the end of opening stroke at zero speed, as shown in FIG. figure 2 .

Un cycle de fermeture s'effectue de façon analogue.A closing cycle is carried out analogously.

Le contact mobile est en position d'ouverture, dans une configuration telle que représentée sur la figure 2. Lorsqu'un ordre de fermeture est transmis, le moteur 3 est actif sur une course correspondante au dépassement de point mort précisé ci-dessus. Le transfert d'énergie mécanique s'effectue ensuite dès passage de ce point mort à partir du ressort de fermeture 16 vers le d'ouverture 15, l'énergie mécanique étant transformée en énergie cinétique et comprimant le ressort d'ouverture 15. Le moteur 3 assure le contrôle de la trajectoire du contact mobile de façon à ce qu'il arrive en fin de course de fermeture à vitesse nulle, comme représenté sur la figure 1.The movable contact is in the open position, in a configuration as shown in FIG. figure 2 . When a closing command is transmitted, the engine 3 is active on a corresponding race to exceed the dead point specified above. The transfer of mechanical energy is then effected as soon as this dead point passes from the closing spring 16 to the opening 15, the mechanical energy being converted into kinetic energy and compressing the opening spring 15. The motor 3 ensures the control of the path of the moving contact so that it reaches the end of closing stroke at zero speed, as shown in FIG. figure 1 .

Selon une variante de réalisation, le dispositif de commande peut comprendre un agencement de débrayage de l'action du ressort de fermeture 16. Cette variante est représentée sur la figure 3.According to an alternative embodiment, the control device may comprise an arrangement for disengaging the action of the closing spring 16. This variant is represented on the figure 3 .

Cet agencement de débrayage consiste en un dispositif de déplacement commandé de la butée 16A du ressort de fermeture 16. Pour ce faire, cette butée 16A peut être coulissée dans un guide cylindrique 20 vers le bas, vu selon là figure 3. Ce déplacement est commandé grâce à un agencement d'engrenages 21 engrené sur une tige dentée 22 solitaire de la butée 16A en question. Cet agencement d'engrenages 21 maintient la butée 16A en position supérieure telle que représenté sur la figure 3, en fonctionnement normal.This disengaging arrangement consists of a displacement device controlled by the abutment 16A of the closing spring 16. To do this, this abutment 16A can be slid into a cylindrical guide 20 downwards, as seen there figure 3 . This movement is controlled by a gear arrangement 21 meshing on a solitary toothed rod 22 of the abutment 16A in question. This gear arrangement 21 maintains the stopper 16A in the upper position as shown in FIG. figure 3 , in normal operation.

Ainsi en cas de panne du moteur 3, cet agencement de débrayage est mis en fonction et la butée 16A descendue. La force du ressort de fermeture précontraint 16 ajoutée à la force de gravitation, supprime toute action du ressort de fermeture 16. Aucune action n'intervient alors à l'encontre de l'action du ressort d'ouverture 15.Thus in the event of a failure of the engine 3, this disengaging arrangement is put into operation and the abutment 16A is lowered. The force of the prestressed closure spring 16 added to the gravitational force, eliminates any action of the closing spring 16. No action then intervenes against the action of the opening spring 15.

Un percuteur 23 est également prévu, disposé pour pouvoir en fonction pousser la manivelle 14 afin qu'elle dépasse son point mort supérieur. La mise en fonction de ce percuteur 23 permet l'ouverture du contact, une fois le ressort de fermeture 16 débrayé. Ce percuteur 23 consiste en un système transformant une énergie électrique en énergie mécanique. Il peut s'agir d'une bobine actionnant un verrou libérant un ressort ou d'un solénoïde.A striker 23 is also provided, arranged to be able to operate the crank 14 so that it exceeds its upper dead point. The activation of this striker 23 allows the opening of the contact, once the closing spring 16 disengaged. Striker 23 consists of a system transforming electrical energy into mechanical energy. It may be a coil actuating a spring releasing latch or a solenoid.

Une fois le moteur 3 de nouveau en fonction, le ressort de fermeture 16 est de nouveau comprimé par remontée de la butée 16A et le dispositif de commande peut reprendre son fonctionnement normal.Once the engine 3 is again in operation, the closing spring 16 is compressed again by raising the stop 16A and the control device can resume normal operation.

Bien entendu, diverses modifications peuvent être apportées par l'homme du métier au dispositif qui vient d'être décrit uniquement à titre d'exemple non limitatif.Of course, various modifications may be made by those skilled in the art to the device which has just been described by way of non-limiting example.

Claims (12)

  1. A device for controlling a circuit-breaker intended for opening and closing this electric power cut-off device comprising a mobile contact, this control device comprising a motor (3) with a rotary output shaft (12) and being connected to power supply means (4-9) and to actuation means transforming the output displacement of said motor (3) into a displacement of said contact, the device also comprising an arrangement of a mechanical spring involved in opening and closing said contact, said spring arrangement including two pre-stressed and antagonist mechanical springs, a first spring (15), a so-called opening spring, ensuring the opening of said contact and a second spring (16), a so-called closing spring, ensuring the closing of said contact, said actuation means being stressed by each of these two springs separated by a ring (18), and including an arrangement for immobilizing said contact in the open position and the closed position,
    characterized in that said actuation means include a set of jointed elements providing the connection of said rotary shaft (12) and of said ring (18), and in that, in the closed position of said contact, said set of jointed elements abuts against an abutment element (19) near a dead centre position, a so-called open dead centre, the opening spring (15) only being able to drive it towards the open position upon moving past this dead centre during opening.
  2. The device according to claim 1, characterized in that said set of jointed elements comprises a crank (14) driven into rotation by said output shaft (12) and jointed at one end of a connecting rod (17), the other end of which is jointed on said ring (18).
  3. The device according to claim 2, characterized in that, in the open position of said contact, said set of jointed elements abuts against said abutment element (19) near a dead centre position, a so-called closed dead centre, the closing spring (16) being only able to drive it towards the closing position upon moving past this dead centre during closing.
  4. The device according to claim 2 or claim 3, characterized in that said crank (14) is driven into rotation by said output shaft (12) via a toothed segment (13) meshed on said output shaft (12) and on which it is jointed.
  5. The device according to any of the preceding claims, characterized in that said motor (3) is a motor for assisting and controlling the trajectory of said contact, powered by a power convertor (4) controlled by a position and speed regulator (5).
  6. The device according to claim 5, characterized in that said regulator (5) provides damping of the displacement of said contact at the end of the travel for opening and at the end of the travel for closing.
  7. The device according to any of the preceding claims, characterized in that said springs (15, 16) are mounted aligned along an axis (A-A'), one of their respective ends abutting against a spring abutment (15A, 16A) and the other of their facing ends being separated by a ring (18).
  8. The device according to any of the preceding claims, characterized in that it includes an arrangement for disengaging the action of the closing spring (16).
  9. The device according to the combined claims 7 and 8, characterized in that said disengaging arrangement consists in a device for controlled displacement of said abutment (16A) of the closing spring (16).
  10. The device according to claim 9, characterized in that it comprises a device for pushing (23) said set of jointed elements towards its open dead centre.
  11. The device according to the combined claims 2 and 10, characterized in that said pushing device consists in a striker (23) intended to stress said crank (14).
  12. The device according to any of the preceding claims, characterized in that in the closing and opening positions of said contact, said connecting rod (17) abuts against said abutment element (19).
EP05717675A 2004-01-23 2005-01-20 Control for electric power interrupting device Not-in-force EP1706880B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450124A FR2865572B1 (en) 2004-01-23 2004-01-23 DEVICE FOR CONTROLLING A DEVICE FOR CUTTING ELECTRIC ENERGY
PCT/FR2005/050030 WO2005076303A1 (en) 2004-01-23 2005-01-20 Control for electric power interrupting device

Publications (2)

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EP1706880A1 EP1706880A1 (en) 2006-10-04
EP1706880B1 true EP1706880B1 (en) 2009-03-11

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EP05717675A Not-in-force EP1706880B1 (en) 2004-01-23 2005-01-20 Control for electric power interrupting device

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US (1) US7642478B2 (en)
EP (1) EP1706880B1 (en)
JP (1) JP4563405B2 (en)
CN (1) CN1910714B (en)
AT (1) ATE425546T1 (en)
DE (1) DE602005013186D1 (en)
FR (1) FR2865572B1 (en)
WO (1) WO2005076303A1 (en)

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US7642478B2 (en) 2010-01-05
WO2005076303A1 (en) 2005-08-18
JP4563405B2 (en) 2010-10-13
CN1910714A (en) 2007-02-07
EP1706880A1 (en) 2006-10-04
US20070163869A1 (en) 2007-07-19
JP2007519195A (en) 2007-07-12
DE602005013186D1 (en) 2009-04-23
CN1910714B (en) 2011-03-02
FR2865572A1 (en) 2005-07-29
FR2865572B1 (en) 2006-05-26
ATE425546T1 (en) 2009-03-15

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