EP1801828B1 - Dispositif de commande d'un appareillage électrique - Google Patents

Dispositif de commande d'un appareillage électrique Download PDF

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Publication number
EP1801828B1
EP1801828B1 EP06126264A EP06126264A EP1801828B1 EP 1801828 B1 EP1801828 B1 EP 1801828B1 EP 06126264 A EP06126264 A EP 06126264A EP 06126264 A EP06126264 A EP 06126264A EP 1801828 B1 EP1801828 B1 EP 1801828B1
Authority
EP
European Patent Office
Prior art keywords
control device
point
during
moving contact
finger
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.)
Active
Application number
EP06126264A
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German (de)
English (en)
French (fr)
Other versions
EP1801828A1 (fr
Inventor
Wolfgang Grieshaber
Jean-Pierre Dupraz
Olivier Grejon
Alain Fanget
Xavier Allaire
Michel Collet
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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Publication date
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Publication of EP1801828A1 publication Critical patent/EP1801828A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • 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
    • 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
    • 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
    • H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence
    • 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
    • H01H3/3015—Charging means using cam devices
    • 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
    • H01H3/3021—Charging means using unidirectional coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord

Definitions

  • the present invention relates to a control device of an electrical apparatus comprising a movable contact adapted to occupy a closed position and an open position.
  • circuit-breaker By electrical equipment, it is here understood generally a circuit breaker, a disconnector, or a device for grounding. Also included are devices combining these various functions, such as circuit-breakers.
  • Such a device is known for example from the document FR-A-2,778,492 .
  • this type of mixed design for the control device generally involves providing a stroke of opening and closing of the movable contact which is greater than necessary, which makes it more complex, heavier and less compact.
  • the object of the invention is therefore to propose a control device of simple and reliable design for electrical equipment, preferably of medium or high voltage type.
  • the principle of the invention is therefore based on a design for successively carrying out three distinct phases of setting the actuating arm in motion, between the instant when the moving contact leaves its closed position and the instant when it returns after having occupied his open position.
  • it is intended to carry out a rearming phase of the mechanical spring, distinct from the closing and opening phases of the moving contact, this the latter being able to be performed under the simple action of the release of the energy having been previously stored by the spring. Therefore, throughout the closing phase of the movable contact, completed when the latter has reached its closed position, no energy storage must be made by the spring, so that the stroke of this contact is perfectly controlled, and requires less energy than that required with the achievements of the prior art.
  • the implementation of this closing phase can thus be achieved by means of a motor of lower power than in the prior art.
  • the implementation of the opening phase is extremely reliable because it does not advantageously require starting of the electric motor, but can instead be performed automatically by a simple release of energy spring as soon as the locking means of the movable contact in the closed position have been deactivated.
  • the resetting phase of the spring does not cause any displacement of the moving contact, which remains in its open position, preferably without the aid of any locking means but simply by the specific design and geometry of the control device.
  • This phase has the sole purpose of storing energy to the spring, before the contact begins its closing phase during which it is moved to its closed position. Therefore, it should be understood that the design proposed by the invention advantageously makes it possible to obtain a stroke of this contact which is totally optimized, since it does not go beyond that just needed to connect the open and closed positions of the movable contact.
  • the closing stroke of the movable contact is perfectly controlled, since it is achieved by starting the engine, and it does not engender either constraint spring that has already has been sufficiently rearmed so that it can subsequently ensure the opening phase alone.
  • the power required to move the moving contact at the desired speed to its closed position is less important than that required with the achievements of the prior art, so that the engine used can consequently be smaller power, and therefore less expensive.
  • control device is designed so that during the closing phase of the moving contact leading to a displacement of the second point of connection of the point P3 to the point P1, the energy stored in the spring mechanical does not vary, that is to say that the latter does not release or store energy during this phase.
  • this device could be designed so that the spring fulfills an accelerator role at the moment of initiation of the closing phase of the moving contact, releasing some of its energy previously stored and adding to the power delivered by the motor, and / or a brake role at the end of the closing phase of the movable contact, by a constraint of this spring.
  • the closed line roughly takes the form of a triangle whose points P1, P2, P3 preferentially form its vertices, the three sides then each corresponding to a path of the second connection point of the actuating arm, during one of the three distinct phases mentioned above.
  • the device is designed so that the opening phase of the movable contact, leading to a displacement of the second point of connection of the point P1 to the point P2, is carried out solely under the effect of the mechanical spring, so as to obtain a very high reliability, or performed so that the engine assists the mechanical spring.
  • control device delivers a linear or rotary output movement towards the moving contact.
  • a motor of the servomotor type is preferably used.
  • the position of the movable contact is slaved during the closing phase, with respect to a setpoint in the form of a mathematical function of time.
  • the speed of the moving contact is slaved during the closing phase, with respect to a set point in the form of a mathematical function of time, and that the acceleration of the movable contact is enslaved during the closing phase, always with respect to a setpoint in the form of a mathematical function of time.
  • the device comprises means for storing energy released during the opening phase of the movable contact under the effect of the expansion of the mechanical spring, these means being designed to transfer energy stored in the mechanical spring, during the rearming phase of the latter.
  • This energy transfer advantageously facilitates the initiation of the resetting phase of the spring, normally provided by the engine.
  • the storage and the restitution of energy is achieved by means of a flywheel, such as a Maltese cross. This flywheel is then rotated at the end of the opening phase under the action of a moving part, and, similarly, it initiates the resetting phase by restoring the stored kinetic energy to the spring.
  • the energy stored / stored by the flywheel during the opening phase is constituted by a portion of the energy delivered by the spring and / or the engine that does not. is therefore no longer used to ensure the end of the movement of the moving contact. Therefore, this part of the energy, which is different from that which allowed the moving contact to reach the required opening speed, can be described as excess energy released by the spring and / or the engine, at the end of the opening phase.
  • the second connection point of the actuating arm is constituted by a finger guided along a path defined at least partially physically on a fixed body, and following the closed line.
  • this path defined at least partially structurally on the fixed body can be made in any case known to those skilled in the art, for example by means of unilateral and / or bilateral guides arranged adjacently to follow the closed line or else using a groove made in the fixed body and penetrated by the aforementioned finger, as is the object of the first preferred embodiment which will be presented below. If it is envisaged that the path is integrally defined materially on a fixed body, one can alternatively consider, as is clear from the foregoing, that this path is partly defined differently than structurally on the fixed body.
  • the second connection point is for example guided along this path because of the specific position of the transmission means which will be presented later and which are connected to the same second point, and because of the position of the pulleys or rollers to be associated with these transmission means.
  • the path is not defined at all structurally on a fixed body, but for example consists of a succession of segments of lines and curves along which the second connection point is able to move by the simple fact of the design and positioning of the transmission means and pulleys or rollers associated with these transmission means, which are of course provided to cooperate with the second connection point.
  • the path consists of a succession of segments of straight lines and curves materialized by the transmission means and a set of pulleys or rollers judiciously arranged.
  • the second connection point of the actuating arm is constituted by a finger guided in a groove along the closed line and practiced in a the fixed body.
  • this finger is able to slide in its associated groove, by sliding and / or rolling, without departing from the scope of the invention.
  • transmission means interposed between the mechanical spring and the actuating arm, these transmission means being rotatably connected to the finger. They preferably take the form of a chain or a cable permanently maintained in tension during the setting in motion of the actuating arm, directly or preferentially via at least one roller. Nevertheless, it would be possible to use other transmission means known to those skilled in the art, such as, for example, strap type, strap, toothed belt, assembly of articulated rods, ribbon, rope, fiber bundle, etc. In a more general manner, the transmission means preferably retained have a linear configuration.
  • these means are preferably also maintained in tension outside the phases of setting in motion of the actuating arm.
  • the portion of the closed line defined between the points P1 and P2 is at least partly rectilinear, and preferably completely straight.
  • the device is then preferably designed so that when the second connection point of the actuating arm is at point P1, the actuating arm, the transmission means and an axis of the mechanical spring are aligned. , preferably in a direction defined by the points P1 and P2.
  • the closed line defined between points P1 and P2 is a portion of at least partially concave shape. Nevertheless, this portion could be of at least partially convex shape, or may comprise a concave zone associated with a rectilinear zone, without departing from the scope of the invention. Depending on the needs encountered, it is possible to have a portion integrating at least one rectilinear zone, and / or at least one concave zone, and / or at least one convex zone.
  • the two portions of the closed line defined respectively between the points P2 and P3, and P3 and P1 are portions of at least partially convex shape, preferably entirely convex, for example each shaped like an arc.
  • the two portions of the closed line defined respectively between the points P2 and P3, and P3 and P1 are preferably portions of at least partially concave shape.
  • the device comprises a first control lever controlled by the motor so as to be able to bring the finger from the point P2 to the point P3, by contact with the same finger, and also comprises a second lever controlled by the motor so as to bring this finger from point P3 to point P1, always by contact with the same finger.
  • a first control lever controlled by the motor so as to be able to bring the finger from the point P2 to the point P3, by contact with the same finger
  • a second lever controlled by the motor so as to bring this finger from point P3 to point P1, always by contact with the same finger.
  • first and second control levers are set in motion simultaneously by the engine, during the phases of resetting the mechanical spring and closing the movable contact.
  • first and second control levers are set independently by the motor, respectively during the resetting phases of the mechanical spring and closing the movable contact.
  • the device comprises a gear system provided with a fixed inner ring of radius R1, a satellite of radius R2 meshing externally with the crown, as well as a carrier.
  • satellite having a rotary shaft arranged along a central axis of the inner ring, the second connection point of the actuating arm consisting of a finger rotatably mounted on the satellite, the latter having a parallel central axis to a central axis of the finger and spaced from the latter axis by a distance d1.
  • This arrangement makes it possible to have a hypocycloid-type closed line described at the second connection point, which is quite suitable for recreating the desired cycle of movement of the actuating arm.
  • the device comprises transmission means interposed between the mechanical spring and the actuating arm, these transmission means being rotatably connected to the transmission satellite. so as to be pivotable relative thereto about an axis of rotation parallel to the central axis of the satellite and spaced from the latter axis by a distance d2.
  • the transmission means preferably take the form of a chain or a cable permanently maintained in tension during the setting in motion of the actuating arm, directly or preferentially via at least one roller .
  • other transmission means known to those skilled in the art, such as, for example, strap type, strap, toothed belt, assembly of articulated rods, ribbon, rope, fiber bundle, etc.
  • the transmission means preferably retained have a linear configuration.
  • these means are preferably also maintained in tension outside the phases of setting in motion of the actuating arm.
  • the aforementioned axis of rotation of the transmission means and the central axis of the finger are confounded, which implies that the value of d1 is equal to that of d2.
  • the ratio d1 / R2 may range between 0.3 and 0.4, or so in a wider range from 0 , 2 to 2.
  • the closed line along which the second connection point moves during the activation arm actuation cycle then has a coarse form of triangle, whose sides are substantially convex.
  • the above-mentioned axis of rotation of the transmission means and the central axis of the finger are distinct.
  • the gear system further comprises a gear wheel driven by the motor and rotatably mounted on the rotary shaft of the carrier, the gear wheel being mechanically coupled to the carrier so as to allow free rotation. of it around its shaft during the opening phase of the movable contact during which the finger is moved from the point P1 to the point P2 under the effect of the mechanical spring, and so as to rotate with it the same door -satellite during the phases of resetting the spring and closing the movable contact, during which the finger is respectively moved from the points P2 to P3, and points P3 to P1, under the effect of starting the motor causing the rotation of the toothed wheel.
  • the toothed wheel is mechanically coupled to the carrier by means of a circular groove formed on an angular sector of the wheel, and traversed by a shaft of the carrier bearing freely rotative the satellite and being arranged along the central axis of the latter.
  • the motor is provided to assist the spring during the opening phase, by example during only part of this opening phase.
  • the engine assists the spring and allows, during the opening phase, to slave the position of the movable contact with respect to a set of instructions in the form of a mathematical function of time.
  • the motor assists the spring and allows, during the opening phase, to slave the speed of the moving contact with respect to a set point in the form of a mathematical function of time, and / or to enslave the acceleration of the moving contact with respect to a setpoint always in the form of a mathematical function of time.
  • the device is designed so that the opening of the movable contact can be performed even when the motor is not able to assist the spring or enslave the parameters of the opening of the movable contact .
  • the invention also relates to an electrical apparatus comprising a movable contact capable of occupying a closed position and an open position, this apparatus comprising a control device such as that described above.
  • the invention also relates to a control method of an electrical equipment implemented using a control device such as that described above.
  • FIG. 1a schematizing the principle of the invention, it is possible to see very schematically a control device 1 at different stages during a control cycle starting from a moment when the mobile contact (not shown), which it is supposed to drive , occupies his closed position, and continues until he finds the same position after having occupied his open position.
  • the figure 1a represents both the initial position and the end position of the cycle, the figures then reading cyclically in the order 1a, 1b, 1c, 1a, etc.
  • This control device 1 is effectively intended to equip an electrical equipment comprising a movable contact capable of occupying a closed position and an open position, such as for example a circuit breaker, a disconnector, or a device for grounding. It is noted that this apparatus is also an object of the present invention.
  • the device 1 comprises firstly an output member 2 taking for example the shape of a bar intended to slide along its own axis, along a bar path 4.
  • This member 2 has a connecting end with the movable contact 2a, as well as a connecting end with an actuating arm 2b.
  • the end 2a which is indifferently connected directly or indirectly to the moving contact of the apparatus, is therefore capable of being driven by a reciprocating movement along the axis of the member 2, which allows it to deliver a linear output movement towards the moving contact, as shown schematically by the double-arrow 6a.
  • the device 1 comprises an actuating arm 8, having a first connection point 8a hingedly mounted on the end 2b of the member 2, and a second connection point 8b having the particularity of being able to be moved along a closed line L represented on the Figures 1a to 1c .
  • the first point 8a is therefore also intended to be moved back and forth along the axis of the member 2 during a cycle of setting the arm 8 in motion, since it is directly connected. on the end 2b of this sliding member.
  • the device 1 comprises a motor 10 of the servomotor type, a mechanical spring 12 which may optionally be replaced by a plurality of springs, and transmission means 14 interposed between the spring 12 and the actuating arm 8 More specifically, the transmission means 14, for example of the type chain, cable, strap, strap, toothed belt, assembly of articulated rods, ribbon, rope, fiber bundle, etc., comprise a first end 14a mounted of articulated manner on the second connection point 8b, and a second end 14b cooperating with one end of the spring 12.
  • the spring 12 is a spring operating in compression, with one end pressed against a fixed element 16 of the device 1, and the other end pressed against the second end 14b of the transmission means 14, the latter passing through the element 16 and the that the spring 12.
  • the arm 8 is in a closed position placing the member 2 directly connected to it in a position such that its end 2a allows the movable contact to occupy its closed position. It is recalled that the movable contact is held firmly in this closed position by means of conventional locking means (not shown), known to those skilled in the art. As an indication, these blocking means belong indifferently to the control device or to another part of the electrical equipment.
  • the arm 8 is preferably substantially parallel to the direction 6a, and its second connection point 8b occupies a point P1 of the closed line L, which is preferably arranged in a plane, and which preferably has a rough form of triangle.
  • the arm 8 is inclined relative to the direction 6a.
  • the aforementioned blocking means of the movable contact are deactivated.
  • these means preferably act indirectly on the moving contact, that is to say closer to the energy reservoir to limit the maximum number of parts under permanent mechanical stresses.
  • the opening phase ends when the moving contact has reached its open position, in which it is preferably maintained simply by the specific design and geometry of the control device, and therefore without the use of the locking means.
  • the arm 8 then occupies an open position as shown on the figure 1b , in which the second connection point 8b is positioned at a point P2 of the closed line L, corresponding to the limit of the first portion of this line.
  • this opening phase is performed solely under the effect of the mechanical spring 12, without the intervention of the motor 10.
  • the electrical equipment used for the protection of transmission and distribution works must be capable of functioning even in the event of failure of the auxiliary sources of energy.
  • a resetting phase of the spring 12 having previously released its energy, at least in part.
  • This resetting phase is carried out by means of the motor 10 ensuring in any way an arm movement 8 so that its second connection point 8b moves along a second portion of the line L up to a distance. point P3 thereof, and so that its first connection point 8a remains in a position ensuring that the movable contact retains its open position, as shown in FIG. figure 1c .
  • the second point 8b moves between the points P2 and P3 of the line L, while the first point 8a, the member 2 and the movable contact keep substantially the same position.
  • the transmission means 14 are driven by the second connecting point 8b in motion, which pushes their end 14b to approach the fixed element 16 and thus to store energy to the spring 12, by compression thereof.
  • this phase is performed only with the energy transmitted by the motor 10, and no energy from the spring 12.
  • the mechanical spring 12 does not store additional energy, since the previous rearming phase of it has allowed it to store enough energy to be able to ensure a subsequent phase of opening the movable contact.
  • the three aforementioned portions of the line L roughly forming a triangle then constitute the three sides of this triangle, whose points P1, P2, and P3 can therefore be considered as its vertices.
  • the shape of the three portions represented on the Figures 1a to 1c is in no way limiting.
  • the point P2 could alternatively be placed between the points P2 and P3 represented on the Figures 1a to 1c , without departing from the scope of the invention.
  • the device 1 comprises means for storing excess energy released during the opening phase of the moving contact under the effect of the mechanical spring, as will be described later with reference to the Figures 11a to 11c .
  • This makes it possible to transfer this excess energy to the mechanical spring, during the rearming phase of the latter, and preferably at the moment of initiation thereof. Therefore, this rearming phase to compress the spring is advantageously performed using the energy transmitted by the engine, but also with the energy transmitted by these additional means can for example take the form of a flywheel.
  • the device is preferably designed so that the closing phase of the moving contact is effected without that there is no release or storage of energy for the mechanical spring, it can still be expected that this device is designed so that the spring serves as an accelerator of the setting in motion of the second point of connection, at the moment of initiation of the closing phase of the movable contact, releasing some of its energy previously stored and adding to that delivered by the engine.
  • the spring could also fulfill a braking function at the end of the closing phase of the movable contact, by a compression of this spring to slow the speed of movement of the second connection point, and that of the actuator arm assembly arriving close to its closed position shown on the figure 1a .
  • the figure 2 shows a schematic view of the control device 1 on which it has been slightly modified compared to that of Figures 1a to 1c , to be able to deliver a rotary output movement for the moving contact.
  • This solution covered by the present invention can for example be obtained by replacing the sliding bar by an output member 2 pivoting about a fixed shaft 20, this output member 2 can then have a first branch carrying the end 2b rotatably connected to the first connection point 8a of the arm 8, and a second branch angularly offset relative to the first and carrying the end 2a intended to be connected to the movable contact.
  • the output member 2 is mounted on the shaft 20 at the junction between its two branches, which provides a rotary output movement, centered on the shaft 20, towards the movable contact, as shown schematically by the double-arrow 6b.
  • FIG. 3 shows the actuating arm 8 in an intermediate position between its closed position and its open position, while the figure 4a shows the actuating arm 8 in its closed position.
  • the second connection point 8b of the actuating arm is constituted by a finger able to slide in a groove 22 along the closed line L and practiced in a fixed body 24 of the device 1, such as a plate.
  • this first mode falls within the group of envisaged cases where the actuating arm 8 is constituted by a finger guided by a path defined materially on a fixed body and following the closed line, the path being thus defined here by the groove, but alternatively be structurally delimited by unilateral or bilateral guides, or any other similar means.
  • This finger 8b thus crosses the groove 22, being arranged orthogonally with respect to a plane defined by it, and is preferably located at one end. the ends of the actuating arm 8. Therefore, as is best seen on the figure 3 the finger 8b is orthogonal to the plane in which the line L is located.
  • the groove 22 is either made through right through on the plate 24 or opens out only at one of the two surfaces of this plate. last.
  • the transmission means 14 are here formed by a cable 26 or the like whose one end 14a is pivotally mounted on the finger 8b, and the other end (not referenced) carries the end 14b of the means 14, which bears against the movable end of the spring 12.
  • the means 14 also preferably comprise at least one roller 28 (visible on the figure 4a ) judiciously positioned to allow the cable 26 to be permanently maintained in tension under the effect of the spring 12. The presence of the / these rollers 28, which is not necessarily necessary to ensure the permanent tensioning of the cable 26, generally allows to guide it so that the spring and the motor used are the smallest possible for the realization of a given electrical equipment.
  • the device 1 comprises control levers controlled by the motor 10 and intended to come into contact with the finger 8b, in order to be able to move the points P2 to P3, and points P3 to P1.
  • the device 1 comprises a first control lever 30 driven by the motor 10 and capable of being rotated about an axis 32 parallel to the finger 8b, with the aid of a gear system (not shown) linking it to an output of the motor.
  • this first lever 30 is intended to ensure the resetting phase of the spring 12.
  • the device 1 comprises a second control lever 34 driven by the motor 10 and capable of being rotated about an axis 36 parallel to the finger 8b, with the aid of a control system. gear (not shown) the binder at the output of the engine. As will be described also later, this second lever 34 is intended to ensure the closing phase of the movable contact.
  • the first portion of the line L situated between the points P1 and P2 is rectilinear, and preferably parallel to the direction 6a.
  • the two other portions situated respectively between P2 and P3 and between P3 and P1 are preferably of convex shape, and may each constitute an arc of a circle.
  • the actuating arm 8 When the finger 8b is in P1 as shown on the figure 4a , the actuating arm 8 is in the closed position, in which it is parallel to the direction 6a. Furthermore, it can also be seen that the actuating arm 8, the cable 26 and the axis 38 of the mechanical spring 12 are aligned in a direction defined by the points P1 and P2. Therefore, throughout the opening phase of the movable contact provided by the release of energy from the spring 12, the aforementioned alignment is retained, which allows in particular to achieve the required speeds with a minimum spring force. In this preferred but non-limiting case visible on the Figures 4a to 4d , the roller 28 is virtually ineffective during the opening phase, since the two strands of cable extending on either side of it remain substantially aligned.
  • the aforementioned alignment could then concern only the actuating arm 8 and the portion of the cable 26 located between the end 14a and the roller 28, preferably always in this direction defined by P1 and P2.
  • the figure 4b shows the control device 1 when the opening phase is completed, that is to say when the arm 8 has reached its open position in which its finger 8b occupies the point P2 of the closed line L roughly taking the shape of a triangle. It can be seen that at the end of this phase, the actuating arm 8, the cable 26 and the axis 38 of the mechanical spring 12 are always aligned in the direction defined by the points P1 and P2.
  • a resetting phase of the spring 12 having previously been released from at least a portion of its energy.
  • This resetting phase is performed by means of a starting of the motor 10, leading to pivoting the first control lever 30 so that it comes into contact with the finger 8b, and that it pushes the latter until it reaches the point P3 of the line L by sliding in the groove 22.
  • the levers 30, 34 are returned to their original position, as shown in FIG. figure 4c .
  • the apparatus When, after this reset phase, the apparatus receives a closing command, it is then initiated a closing phase of the moving contact, this phase being performed by means of a start of the motor 10, leading to rotate the second control lever 34 so that it comes into contact with the finger 8b located at P3, and that it pushes the latter until it reaches the point P1 of the line L by sliding in the groove 22, as shown in FIG. figure 4d .
  • the closing phase is completed, the levers 30, 34, intended to be moving parallel to the plate 24 and the plane of the closed line L, are returned to their original position as shown on the figure 4a .
  • the spring 12 has remained in the same state of compression as that adopted at the end of the rearming phase, shown on FIG. figure 4c .
  • FIG 5 it is possible to see a control device 1 according to a second alternative of the first preferred embodiment of the present invention, this figure 5 showing the actuating arm 8 in its closed position, after the second control lever 34 driven by the motor (not shown) has brought the finger 8b into contact with the point P1 of the closed line L, along the groove 22.
  • the transmission means 14 shown comprise a second roller 28 close to P1 and also ensuring the tensioning of the cable 26, it can be seen that the first portion of the line L between the points P1 and P2 here takes the form of an at least partially concave portion. Indeed, this one starts from P1 by a substantially rectilinear zone, then continues with a concave zone up to P2.
  • the rectilinear zone is preferably aligned with the arm 8 situated in its closed position, as shown in FIG. figure 5 .
  • the second roller 28 is placed so as to ensure collinearity between the rectilinear zone and the portion of the cable 26 located between the end 14a and the second roller 28, during the opening phase of the movable contact. In this way, at the beginning of the opening phase, this roller 28 advantageously keeps the portion of the cable 26 connected to the finger 8b parallel to the path of the same finger. The travel speeds required for the moving contact are therefore easily achieved.
  • the other roller 28 shown on the figure 5 and closer to the spring 12 allows for it to ensure correct orientation of the cable 26 during the resetting phase of the spring 12.
  • control device 1 The other elements of the control device 1 are identical or similar to those presented in the context of the first alternative described above.
  • the finger 8b is guided all along the line L in a path defined structurally by the groove 22.
  • the path can be fully physically defined on a fixed body, one can alternatively consider, as has been mentioned previously, that this path is partly defined differently than structurally on the fixed body. To do this, at the non-structurally defined portions of the path, the fingers 8b is for example guided along the path because of the specific position of the transmission means and the associated pulleys or rollers.
  • one of the peculiarities lies in the fact that there is provided a gear system capable of ensuring the displacement of the second connection point 8b of the actuating arm 8 along the closed line L (not shown on Figures 6a and 6b ), so that it is no longer necessary to provide a path defined structurally on a fixed plate as was the case for the first preferred embodiment.
  • the gear system also comprises a planet carrier 50 having a rotary shaft 52 arranged along the central axis 44, as well as a shaft 54 freely rotating the satellite 46. Naturally, this shaft 54 is arranged along the axis 48.
  • the second connection point 8b is constituted by a finger rotatably mounted on the satellite 46, the finger 8b having a central axis 56 parallel to the axis 48 and spaced therefrom. a distance d1.
  • the finger 8b is mounted on one of the flanks of the satellite 46, orthogonally thereto, and of course eccentrically.
  • the transmission means 14 are here also formed by a cable 26, maintained in tension during all the phases of the operating cycle, and at least one roller 28.
  • the end 14a of the cable 26 is rotatably mounted on the satellite 46, so as to be pivotable relative thereto about an axis of rotation 58 parallel to the central axis 48 of the satellite 46, and spaced from this axis by a distance d2.
  • the end 14a can be rotatably mounted on the finger 8b, between the satellite 46 and the actuating arm 8.
  • the other end (not referenced) of the cable 26 carries the end 14b of the means 14 bearing against the movable end of the spring 12, the latter being always maintained at the other end thereof by the fixed element 16.
  • other transmission means known to those skilled in the art, such as for example strap type, strap, toothed belt, assembly of articulated rods, tape, rope, fiber bundle, etc.
  • the ratio d1 / R2 is preferably between 0.3 and 0.4.
  • the gear system preferably comprises a gear 60 driven by the motor 10 and mounted freely rotatably on the rotary shaft 52.
  • This wheel 60 is intended to be coupled mechanically to the carrier-satellite 50 so as to allow free rotation thereof around its shaft 52 during the opening phase of the movable contact, and so as to rotate with it the same carrier-satellite 50 during the phases of resetting the spring and closing the movable contact.
  • the mechanical coupling is effected by means of a circular groove 62 formed in the wheel 60, this groove being centered on the axis 44 and made only on a given angular sector of this wheel.
  • the groove 62 is traversed by the shaft 54 of the carrier, which implies that the wheel 60 is preferably positioned parallel between the satellite 46 and an arm 64 of the planet carrier 50 integrally connecting the two shafts 52, 54 of this last.
  • the actuating arm 8 When the finger 8b is in P1 as shown on the figure 6a the actuating arm 8 is thus in the closed position, in which it is parallel to the linear output direction 6a of the control device 1. Moreover, it can also be seen that the axes 44, 48, 56, 58 are naturally parallel, and located in the same diametral plane of the crown 42. Nevertheless, it is noted that this specificity is not necessary, and that in this configuration where the arm 8 occupies its closed position, the axis 58 of the transmission means 14 could of course be located outside the plane defined by the axes 44, 48 and 56 of the planet carrier 50 and the finger 8b.
  • the apparatus When the apparatus receives an order to open the movable contact, the latter is released by its associated blocking means, and the opening phase of the movable contact can then be ensured by the release of energy from the spring 12.
  • the satellite 46 pivots around its central axis 48 by meshing with the ring gear 42, while the planet carrier 50 pivots around the axis 44, which causes a movement of the arm 8 which moves to its open position shown on the figure 7b in which the finger 8b is located at P2.
  • the shaft 54 thus moves freely within the groove 62 held firmly, this movement being effected from one end to the other of the groove 62.
  • a resetting phase of the spring 12 having previously released at least partly its energy, as shown by its length shown on the figure 7b .
  • This rearming phase is performed by by means of a start of the motor 10, causing the wheel 60 to pivot so that one end of its circular groove 62 comes into contact with the shaft 54, and pushes the latter 54 the finger 8b reaches the point P3 of the closed line L.
  • the end concerned is not that occupied by the shaft 54 at the end of the opening phase, but the opposite one occupied by the same shaft 54 when the arm 8 is in its closed position.
  • a closing phase of the moving contact is initiated, this phase being carried out by means of a start-up of the motor 10, again leading to to rotate the wheel 60 so that the end of its groove 62 which is in contact with the shaft 54 pushes the latter again until the finger 8b reaches the point P1, as shown on the figure 6a .
  • the spring 12 has remained in the same state of compression as that adopted at the end of the rearming phase, shown on the Figure 7c representing the actuating arm 8 in the reset position.
  • the wheel 60 In a normal operating mode, that is to say in which all the elements of the system are in working order, the wheel 60 is rotated by the motor 10 at the same time as the opening order is given .
  • the kinetic energy acquired by the wheel 60 is reused for the start of the reset operation.
  • the setting in motion of the wheel 60 does not participate, or only insignificantly, in the displacement of the axis 54 during the opening phase, so that it is indeed possible to consider that the finger 8b is moved during this same phase only under the action of spring, and not also indirectly by the setting in motion of the wheel 60.
  • the motor can however be used at the beginning of the opening phase, in addition to the action of the spring 12, to satisfy certain applications requiring an exceptionally short reaction time of electrical equipment.
  • the non-use of the engine in such a context leads to finding a normal reaction time.
  • the motor can be used to enslave the position, the speed or the acceleration of the moving contact during the closing phase, to slave the position, the speed or the acceleration of the moving contact. during the opening phase, and / or ensure that the spring is reset within a defined period of time.
  • the end 14a is no longer pivotally mounted on the finger 8b, but on a finger 70 rotatably attached to a flank of the satellite 46, as is also the case for the finger 8b, at a location different from the same satellite and preferably at a different distance from the center of the latter.
  • connection point 8a of the arm 8 is located below the finger 8b, so that the initial position of this arm 8 is reversed compared to that encountered in the first alternative. More specifically, in the open position, the connection point 8a of the arm 8 is located below the portion of the closed line joining the points P1 and P2, as shown by the figures 8a and 8b .
  • the actuating arm 8 is located parallel to the linear output direction 6a of the control device 1.
  • the four axes 44, 48, 56, 58 are not only distinct and parallel, but also located in the same diametral plane of the crown 42. Nevertheless, it is noted that this specificity is not necessary, and that in this configuration where the arm 8 occupies its closed position, the axes 56 and 58 could obviously be located outside the plane defined by the axes 44 and 48 of the planet carrier 50.
  • control device 1 The other elements of the control device 1 are identical or similar to those presented in the context of the first alternative described above.
  • transmission means 14 comprising an additional roller 28, as shown in FIG. figure 10 .
  • This new roller 28, adding to that already described, is located generally between the points P1 and P2 of the closed line L, near P1.
  • this new roller 28 advantageously allows to maintain the portion of the cable 26 located between the finger 8b and the same roller 28 substantially parallel to the path of the same finger 8b.
  • the transmission of the forces provided by the spring 12 to the finger 8b during the beginning of the opening phase is therefore highly optimized.
  • FIG. 11a to 11c it is shown a preferred embodiment of means for storing / storing excess energy emerging during the opening phase of the movable contact under the effect of the mechanical spring, these means being designed to transfer the excess energy stored towards the mechanical spring, during the resetting phase of the latter.
  • this type of means described for the second preferred embodiment could also apply for the first preferred embodiment.
  • the energy recovery means are based on a flywheel, here taking the form of a "Maltese cross" 80 which can rotate freely about an axis of rotation 81.
  • the inertia of the Maltese cross can be completed by its coupling to another flywheel not shown and rotating about the same axis of rotation 81, or possibly around another axis.
  • the Maltese cross 80 is provided with an integer number of grooves 82, oriented radially and sufficiently wide to allow, with the minimum of friction and preferably without shock, the penetration of a transfer finger 83.
  • the transfer finger 83 describes a path linked to the connection point 8b of the actuating arm.
  • the transfer finger 83 is a cylindrical axis orthogonally fixed on the satellite 46, at a distance adapted from its center 48.
  • the trajectory 84 of the transfer finger 83 in the vicinity of the Maltese cross 80 is of convex shape, as shown in dashed lines on the Figures 11a to 11c .
  • the axis of rotation 81 and the diameter of the Maltese cross 80 are designed so that the transfer finger 83 penetrates and leaves the groove 82 preferably tangentially to the walls of the groove in question.
  • the Maltese cross 80 is associated with an angular indexing device (not shown) ensuring the correct positioning of a groove 82 when the transfer finger 83 comes into contact.
  • the transfer finger 83 enters the groove 82 as shown in FIG. figure 11a and initiates the rotation of the Maltese cross 80, and, consequently, the storage by this cross of excess kinetic energy, that is to say that not directly used to ensure the displacement of the movable contact to its open position. While the transfer finger 83 is still engaged in the groove 82 as visible on the figure 11b , the Maltese cross 80 reaches its maximum speed of rotation. From this moment also corresponding to the end of the opening phase and the beginning of the reset phase, it restores, because of its high speed at the exit of the opening phase, its kinetic energy to the spring 12 via the transfer finger 83 and the transmission means 14.
  • the energy transfer to the spring in rearming phase is completed when the finger 83 leaves the groove 82, as shown on the figure 11c .
  • the rotational speed of the Maltese cross 80 is then zero, and a new groove 82 is in the correct position to accommodate the finger 83 and ensure a next energy transfer during the next operating cycle.
  • control device 1 could be designed so that at least some of its elements are taken symmetrically with respect to a plane parallel to that in which the finger 8b moves.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Vending Machines For Individual Products (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Motor And Converter Starters (AREA)
  • Selective Calling Equipment (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP06126264A 2005-12-20 2006-12-15 Dispositif de commande d'un appareillage électrique Active EP1801828B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0553967A FR2895140B1 (fr) 2005-12-20 2005-12-20 Dispositif de commande d'un appareillage electrique

Publications (2)

Publication Number Publication Date
EP1801828A1 EP1801828A1 (fr) 2007-06-27
EP1801828B1 true EP1801828B1 (fr) 2010-11-03

Family

ID=36915440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06126264A Active EP1801828B1 (fr) 2005-12-20 2006-12-15 Dispositif de commande d'un appareillage électrique

Country Status (8)

Country Link
US (1) US7880104B2 (ko)
EP (1) EP1801828B1 (ko)
JP (1) JP5021288B2 (ko)
KR (1) KR101278602B1 (ko)
CN (1) CN101013633B (ko)
AT (1) ATE487226T1 (ko)
DE (1) DE602006017958D1 (ko)
FR (1) FR2895140B1 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907596B1 (fr) * 2006-10-18 2009-01-23 Areva T & D Sa Dispositif de commande d'un appareillage electrique
FR2990053B1 (fr) * 2012-04-26 2015-01-30 Alstom Technology Ltd Dispositif d'actionnement des contacts d'un disjoncteur comportant une barre de torsion
US9646778B2 (en) 2014-01-21 2017-05-09 Mitsubishi Electric Corporation Gas insulated switching apparatus and switch
CN113113243B (zh) * 2021-03-01 2023-11-10 北京航天控制仪器研究所 一种用于有载分接开关的多机械储能装置的蓄能器以及有载分接开关

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2226450A1 (de) * 1972-05-26 1973-12-06 Siemens Ag Antriebsvorrichtung mit drehstabfeder fuer elektrische schaltgeraete
US4153828A (en) * 1976-07-08 1979-05-08 General Electric Company Stored-energy operating means for an electric circuit breaker
FR2666684B1 (fr) * 1990-09-10 1996-08-23 Alsthom Gec Commande de disjoncteur.
DE4227953C1 (de) * 1992-08-22 1994-03-17 Felten & Guilleaume Energie Motorantriebsvorrichtung für Schaltgeräte, insbesondere für Mittelspannungsschaltanlagen
US5504289A (en) * 1994-03-30 1996-04-02 Abb Power T&D Company Inc. Circuit switching mechanism and charging system therefor
DE19504714B4 (de) * 1995-02-14 2006-08-24 Daimlerchrysler Ag Verfahren und Vorrichtung zur Überwachung einer Zustandsgröße eines Leistungsschalters
FR2778492B1 (fr) * 1998-05-11 2000-06-23 Alsthom Gec Commande a ressorts pour interrupteur de circuits
IT1301872B1 (it) * 1998-07-24 2000-07-07 Abb Adda S P A Dispositivo di comando e controllo di interruttori di alta e mediatensione
JP2002152922A (ja) * 2000-11-08 2002-05-24 Toshiba Corp 開閉器用操作機構
FR2835093B1 (fr) * 2002-01-24 2004-03-12 Schneider Electric Ind Sa Appareillage electrique de coupure muni d'une commande motorisee et procede de commande d'un tel appareil
JP2004047257A (ja) * 2002-07-11 2004-02-12 Mitsubishi Electric Corp 絶縁開閉装置
JP3861832B2 (ja) * 2003-03-11 2006-12-27 株式会社日立製作所 開閉器

Also Published As

Publication number Publication date
ATE487226T1 (en) 2010-11-15
CN101013633A (zh) 2007-08-08
FR2895140B1 (fr) 2008-01-18
US7880104B2 (en) 2011-02-01
KR20070065832A (ko) 2007-06-25
US20070137994A1 (en) 2007-06-21
KR101278602B1 (ko) 2013-07-05
CN101013633B (zh) 2011-11-02
JP2007173241A (ja) 2007-07-05
FR2895140A1 (fr) 2007-06-22
EP1801828A1 (fr) 2007-06-27
DE602006017958D1 (en) 2010-12-16
JP5021288B2 (ja) 2012-09-05

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