EP2601662B1 - Entraînement pour un sectionneur à capacité de commutation c ou o - Google Patents

Entraînement pour un sectionneur à capacité de commutation c ou o Download PDF

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Publication number
EP2601662B1
EP2601662B1 EP11741102.5A EP11741102A EP2601662B1 EP 2601662 B1 EP2601662 B1 EP 2601662B1 EP 11741102 A EP11741102 A EP 11741102A EP 2601662 B1 EP2601662 B1 EP 2601662B1
Authority
EP
European Patent Office
Prior art keywords
switching
compression spring
actuating
drive according
fork
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
EP11741102.5A
Other languages
German (de)
English (en)
Other versions
EP2601662A1 (fr
Inventor
Franz-Josef Körber
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.)
ABB Technology AG
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ABB Technology AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP2601662A1 publication Critical patent/EP2601662A1/fr
Application granted granted Critical
Publication of EP2601662B1 publication Critical patent/EP2601662B1/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
    • H01H3/22—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • 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
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/04—Energy stored by deformation of elastic members
    • H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
    • 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
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H01H2003/405—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing using a walking nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means

Definitions

  • the invention relates to a drive for a circuit breaker with C and O -Schaltlinguistic with serving as a switching contact switching pin and with an electric motor driven spindle drive with a spindle nut.
  • a circuit breaker is an electrical high voltage switch with low current switching capability for high voltage installations. Usually, it has a switching fault protection which prevents erroneous opening and closing under load. During a disconnection process under load, a circuit breaker would be destroyed due to the arc occurring.
  • a disconnect switch in which a movable part and a stationary part can be brought into contact with each other or separated again by a compression spring acting on the movable part.
  • the US 2006/0006143 A1 discloses a grounding switch for a medium voltage switchgear, in which compression springs are also used.
  • C and O switching capability means that the so-called switch, in the present case a circuit breaker, provides a switching capacity to be specified within a C or O circuit. This switching capacity is determined by the switching speed.
  • circuit breaker which, as already explained, is used as a high voltage electrical switch with limited current switching capacity for high voltage systems or high voltage switchgear.
  • circuit breaker or switch disconnectors with high current switching capacity are required, which are usually combined with the circuit breaker in series.
  • disconnectors are operated according to their destination, although only with open circuit breakers, but by the control capacities on the switching paths of the circuit breakers so the capacity of the connected power supplies connected to these capacitive equalizing currents on or off.
  • disconnectors are designed for a minimum switching capacity, so when switching capacitive currents of the busbars, inductive currents of idle transformers and even when busbar change the arcing contacts the pin contacts of the circuit breaker or at least not too quickly wear, especially by the alternating frequency tearing off the arc transient overvoltages are generated, which favor the formation of arcs.
  • the switching time of a conventional motor drive for the circuit breaker is about 1 second, the switching speed is about 0.1 m / s. Due to the duration of the arc when switching capacitive currents of the busbars, inductive currents of idle transformers and also when busbar change (bus current transfer switching) it comes to wear of the arcing contacts of the separator pins. For these reasons, the switching of idle transformers can be done so far only with a fast circuit breaker (transformer panel).
  • a fast circuit breaker can avoid this disadvantage due to its very short arc times and is therefore suitable with proper design for the switching of idle transformers. He replaces a circuit breaker.
  • the adjusting element is articulated to the compression spring, wherein the compression spring is formed by a spring assembly which is mounted bistable.
  • the compression spring is fixedly mounted on the side opposite the articulation point of the actuating element.
  • an arrangement which causes by means of the compression spring own spring force pivotal movement of the actuating element about its fixed pivot point as soon as the actuator is acted upon by the spindle nut and removed from its current position by occupying the opposite of the two stable positions.
  • An end face of the adjusting disc or the adjusting cylinder is provided with at least one acted upon by the adjusting element, eccentrically arranged adjusting bolt for the purpose of rotational actuation of the adjusting disc or the adjusting cylinder.
  • the actuator which is designed as a double shift fork, that is provided with two shift forks, the spindle nut engages in a first shift fork and actuated accordingly depending on the movement of the associated spindle drive, and a second shift fork at least one of the one end face of the adjusting disc or the adjusting cylinder eccentrically arranged adjusting bolt acted upon and thereby set the adjusting disk or the adjusting cylinder in rotation.
  • the drive according to the invention is characterized in that the compression spring has a spring force which ensures the C or O switching capability of the drive.
  • the adjusting device is formed by a setting disc or an actuating cylinder, whose or its peripheral surface is in engagement with a control shaft for actuating the switching pin, preferably by means of positive engagement.
  • the construction according to the invention relates to a fast-running disconnector drive according to the spring principle.
  • the contact pin In the end positions (ON and OFF), the contact pin is held securely by the residual tension of the springs.
  • the switching action is initiated via the motor-driven spindle drive. While the release pin initially remains at rest, the spring is already stretched in the direction of unstable center position and the actuator applies to the shift shaft.
  • the angle of rotation of the acted upon by the shift fork actuator is about 80 ° to 100 °.
  • the conversion to larger angles of rotation of, for example, 286 ° or 306 ° can be realized by means of a Vorgeleges.
  • Fig. 1 a schematic diagram of an embodiment of the drive 10 according to the invention is shown, which has an actuating element 12, a compression spring 14, an adjusting device 16 and a spindle drive 18 with spindle nut 20 located thereon.
  • the actuator 12 in turn has a subsequent to a flange 22 double fork 24 with a first and a second shift fork 26, 28, wherein the actuator 12 is pivotable about a fixedly disposed in the flange 22 pivot point 30.
  • the double shift fork 24 facing away from the end of the flange portion 22 is pivotally connected in a common joint 32 with the compression spring 14.
  • the compression spring 14 is formed in the embodiment shown as a spring assembly and arranged in a cylindrical sleeve 34 which has the common pivot 32 at its end facing the actuator 12, while the opposite end of the sleeve 34 is pivotally mounted about a fixed pivot point 36.
  • shift forks 26, 28 are adjacent but not rectified, that is, their fork openings do not point in the same direction but their orientation is offset by 90 ° to each other.
  • the adjusting device 16 is formed by a circular cylinder 38 which is rotatably arranged about a central axis 40 which perpendicularly intersects the extension of the connecting line of the rotary joint 32 with the fixed pivot point 30 in the flange portion 22 on the adjusting device 16, that is perpendicularly emerges from the plane.
  • a shift pin 44 is mounted, which serves for alternate engagement with the first shift fork 26, which depends on the loading of the actuating element 12 on the one hand by the compression spring 14 and on the other hand by the spindle nut 20th from the in Fig. 1 shown in relation to the compression spring 14 metastable center position each moved into one of two stable end positions, whereby the adjusting device 16, that is, the circular cylinder is rotated accordingly.
  • Fig. 2 is that in Fig. 1 shown and explained above embodiment of a drive according to the invention for a circuit breaker in the closed position of the switching contact, not shown in detail.
  • the compression spring 14 is in this switching position in one of its two stable end positions, which was initiated by downward movement of the spindle nut 20.
  • Fig. 3 is that in Fig. 1 shown and explained above embodiment of a drive according to the invention for a circuit breaker in the closed position of the switching contact, not shown in detail.
  • the compression spring 14 is located in this switching position in one of its two stable end positions, which was initiated by upward movement of the spindle nut 20.

Landscapes

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

Claims (11)

  1. Entraînement pour un sectionneur comprenant une tige de commutation servant de contact de commutation, un entraînement à broche (18) entraîné par un moteur électrique avec un écrou de broche (20), et un ressort de compression (14),
    caractérisé par
    - un élément de commande (12) sollicité par le ressort de compression (14) et pouvant pivoter autour d'un centre de rotation fixe (30), réalisé sous forme de fourche de commutation double avec une première et une deuxième fourche de commutation (26, 28),
    - lequel élément de commande est connecté de manière articulée au ressort de compression (14) dans une articulation pivotante commune (32),
    - et dans lequel s'engage d'une part l'écrou de broche (20),
    - et qui coopère d'autre part avec un dispositif de commande (16) formé par un disque de commande ou un cylindre de commande,
    - une surface frontale du disque de commande ou du cylindre de commande étant pourvue d'au moins un boulon de commande (44) disposé de manière excentrique, pouvant être sollicité par l'élément de commande (12), afin d'actionner en rotation le disque de commande ou le cylindre de commande,
    - et le ressort de compression (14) étant formé par un paquet de ressort qui est supporté de manière bistable et qui est supporté fixement sur le côté opposé au point d'articulation de l'élément de commande (12).
  2. Entraînement selon la revendication 1, caractérisé en ce que le boulon de commande (44) sert à l'engagement réciproque avec la première fourche de commutation (26) qui le déplace, en fonction de la sollicitation de l'élément de commande (12) d'une part par le ressort de compression (14) et d'autre part par l'écrou de broche (20), d'une position centrale métastable du ressort de compression (14) à chaque fois dans une de deux positions d'extrémité stables, de sorte que le dispositif de commande soit tourné de manière correspondante.
  3. Entraînement selon la revendication 1 ou 2, caractérisé en ce que la fourche de commutation double (24) se raccorde à une partie de bride (22) et en ce que le centre de rotation fixe (30) est disposé dans la partie de bride (22).
  4. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que les fourches de commutation réunies dans la fourche de commutation double (24) de l'élément de commande (12) sont adjacentes mais ne sont pas orientées dans le même sens.
  5. Entraînement selon la revendication 4, caractérisé en ce que dans une position centrale métastable du ressort de compression (14), l'ouverture de fourche (27) de la première fourche de commutation (26) est tournée dans la direction d'un prolongement de la ligne reliant l'articulation pivotante (32) au centre de rotation fixe (30), et en ce que l'ouverture de fourche (29) de la deuxième fourche de commutation (28) est disposée perpendiculairement ou suivant un autre angle par rapport à celle-ci dans la direction de l'entraînement à broche (18).
  6. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (16) est disposé de manière à pouvoir tourner autour d'un axe médian (40) qui, dans une position centrale métastable du ressort de compression (14), coupe perpendiculairement un prolongement de la ligne reliant l'articulation pivotante (32) au centre de rotation fixe (30).
  7. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un arbre de commutation (46) est en prise avec le dispositif de commande (16) avec son axe parallèle à celui-ci, lequel arbre de commutation actionne le contact de commutation du sectionneur.
  8. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que le ressort de compression (14) présente une force de ressort qui garantit une capacité de commutation C et 0 de l'entraînement.
  9. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la position de fermeture du sectionneur, le ressort de compression (14) se trouve dans l'une de ses deux positions d'extrémité stables.
  10. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que l'une des deux positions d'extrémité stables du ressort de compression (14) est amorcée par un déplacement vers le bas de l'écrou de broche (20), et l'autre des deux positions d'extrémité stables du ressort de compression (14) est amorcée par un déplacement vers le haut de l'écrou de broche (20) .
  11. Entraînement selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la position de fermeture du sectionneur, l'articulation pivotante (32) s'est éloignée latéralement de la droite formée par une ligne reliant le centre de rotation fixe (30) à un centre de pivotement (36) du ressort de compression (14), de sorte que la première fourche de commutation (26) sollicite vers la droite ou vers la gauche le boulon de commutation (44).
EP11741102.5A 2010-08-02 2011-07-06 Entraînement pour un sectionneur à capacité de commutation c ou o Active EP2601662B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010033042A DE102010033042A1 (de) 2010-08-02 2010-08-02 Antrieb für einen Trennschalter mit C O-Schaltvermögen
PCT/EP2011/003356 WO2012016618A1 (fr) 2010-08-02 2011-07-06 Entraînement pour un sectionneur à capacité de commutation c ou o

Publications (2)

Publication Number Publication Date
EP2601662A1 EP2601662A1 (fr) 2013-06-12
EP2601662B1 true EP2601662B1 (fr) 2015-10-07

Family

ID=44629853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11741102.5A Active EP2601662B1 (fr) 2010-08-02 2011-07-06 Entraînement pour un sectionneur à capacité de commutation c ou o

Country Status (7)

Country Link
US (1) US8890640B2 (fr)
EP (1) EP2601662B1 (fr)
KR (1) KR20130094779A (fr)
CN (1) CN103026439B (fr)
DE (1) DE102010033042A1 (fr)
HU (1) HUE028249T2 (fr)
WO (1) WO2012016618A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104715942B (zh) * 2013-12-13 2016-08-24 上海电科电器科技有限公司 电机凸轮操作机构及其传动机构
US10732223B2 (en) * 2017-09-14 2020-08-04 Schweitzer Engineering Laboratories, Inc. Circuit breaker health monitoring
CN108711531B (zh) * 2018-07-09 2023-12-29 江苏双汇电力发展股份有限公司 一种高压开关

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DD68025A (fr) *
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Also Published As

Publication number Publication date
WO2012016618A1 (fr) 2012-02-09
KR20130094779A (ko) 2013-08-26
EP2601662A1 (fr) 2013-06-12
US20130135066A1 (en) 2013-05-30
CN103026439A (zh) 2013-04-03
US8890640B2 (en) 2014-11-18
HUE028249T2 (hu) 2016-12-28
CN103026439B (zh) 2016-01-20
DE102010033042A1 (de) 2012-02-02

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