EP2839495B1 - Changeur de prises en charge - Google Patents

Changeur de prises en charge Download PDF

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Publication number
EP2839495B1
EP2839495B1 EP13714885.4A EP13714885A EP2839495B1 EP 2839495 B1 EP2839495 B1 EP 2839495B1 EP 13714885 A EP13714885 A EP 13714885A EP 2839495 B1 EP2839495 B1 EP 2839495B1
Authority
EP
European Patent Office
Prior art keywords
load tap
tap changer
selector
contact
contacts
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
EP13714885.4A
Other languages
German (de)
English (en)
Other versions
EP2839495A1 (fr
Inventor
Alfred Bieringer
Christian Hammer
Rolf Strempel
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP2839495A1 publication Critical patent/EP2839495A1/fr
Application granted granted Critical
Publication of EP2839495B1 publication Critical patent/EP2839495B1/fr
Active 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
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0038—Tap change devices making use of vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/052—Selectors, e.g. dimmers

Definitions

  • the present invention relates to an on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer according to the preamble of the first claim.
  • On-load tap-changers have been in worldwide use for many years for uninterrupted switching between different winding taps of tapped transformers in large numbers. So-called reactor switches, which are particularly common in North America, have a switching reactance, which allows a slow, continuous switching.
  • On-load tap changers according to the resistance fast-switching principle usually consist of a selector for powerless selection of the respective winding tap of the tapped transformer to be switched to, and a diverter switch for the actual switching from the previous to the new, preselected winding tapping.
  • the diverter switch usually has switching contacts and resistance contacts.
  • the switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, d. H. Bridging by means of one or more switching resistors.
  • a diverter switch carries a drivable by a power storage drive shaft with at least one cam.
  • the cam has a plurality of control cams, wherein two arranged on the cam front control cams have a deviating from a circular contour contour on the type of cam on the contact one each connected via a rocker arm with a vacuum interrupter roller is performed, the profiled contour of the respective control cam taps.
  • tap changer In a special type of on-load tap-changers, the so-called load selectors, the described means for selecting a new winding tapping and the means for actual load switching are structurally combined and operated together.
  • tap changer are constructed according to the principle of resistance fast circuit for uninterrupted switching from a tap of a tapped transformer to another so that each with the outputs of the stepped windings electrically connected fixed step contacts in one or more horizontal plane or planes are arranged in a circle on an insulating material stand or cylinder and can be connected by actuated by concentric drive shafts rotatable contact bridges.
  • load selectors in which the step selection and the actual load switching are combined, the actuation of the contact bridges takes place abruptly after triggering a wound up by the drive shaft of the switch energy storage, usually spring energy storage.
  • DE 42 37 165 C1 forms the basis for the preamble of claim 1 and, unlike these conventional constructions, describes a tap changer with linear contact actuation, wherein the fixed step contacts extend along a track into the interior of the switch and are connectable by a displaceable switching mechanism, in turn, of the Drive shaft is driven.
  • the vertically displaceable switching mechanism consists of a continuously driven by the drive shaft elevator carriage, which selects the new fixed stage contact, and a windable by the elevator carriage by means of an energy storage driven part, which jumps after triggering the elevator carriage and thereby the actual load switching of the previous tap Step winding on the selected new tap completes.
  • the required switching elements are part of the stripping section.
  • WO 2004 088 693 A1 describes a tap changer, which includes as a drive a torque motor that operates both the diverter switch and the fine selector directly.
  • the general inventive idea is to operate both the selector contact unit, as well as the switching means for uninterrupted load switching by means of a common motor drive without the interposition of an energy storage.
  • the motor drive both a threaded spindle is driven, which in turn is in operative connection with the selector contact unit, as well as a camshaft, by means of which the vacuum interrupters are actuated.
  • This allows in a particularly advantageous manner, a simple operation of the selector contact unit independently of the vacuum interrupters.
  • the on-load tap-changer has a transmission module attached to the underside of the transformer cover, which cooperates with the motor drive arranged on the opposite outer side of the transformer cover.
  • the gear module has for this purpose a flange-like sealing module, which is arranged directly on the underside of the transformer cover and releasably connected to the motor drive, in particular screwed, is.
  • the gear module On the transmission module, the entire on-load tap-changer is also attached.
  • the gear module has both the task of holding the on-load tap-changer, as well as seal by means of the sealing module with respect to the outside of the transformer. Twists of the transformer cover during transport of the transformer are thus not transmitted to the on-load tap-changer.
  • a connection flange with overfilled sealing surface on the transformer cover can be dispensed with.
  • this type of proposed attachment provides a simple for the transformer manufacturer mounting the on-load tap-changer within the transformer tank.
  • a support plate made of a dielectric material, in particular a plastic is provided on the first contact side on a Vählerromeech and the vacuum interrupters are arranged on a second side, such that the carrier plate necessary for the on-load tap changer Erdabstand manufactures.
  • the at least one selector contact unit is moved during a switchover along a guide rod, which ensure a linear guidance of the at least one selector contact unit.
  • a selector contact unit in each case comprises a sliding carriage and a contact carrier for receiving the movable selector contacts, which interact with the fixed selector contacts.
  • the movable selector contacts are each accommodated on a contact carrier and cooperate with fixed selector contacts, such that the individual fixed selector contacts by a longitudinal displacement of the movable selector contacts including sliding, ie the selector contact unit, along the guide rod can be connected.
  • the individual fixed selector contacts are connected and thus go through the control range of the on-load tap-changer.
  • step transformer which is well known in the prior art, comprises a transformer tank filled with insulating oil, in which at least one winding is arranged on an iron yoke. This winding is divided into a master and a control winding, on which a plurality of winding taps are provided, which form the control area.
  • the on-load tap-changer 1 has a transmission module 2 fastened to the underside of the transformer cover, which cooperates with a motor drive 3 arranged on the opposite outer side of the transformer cover.
  • the motor drive 3 can be formed for example as a commercial stepper motor.
  • the transmission module 2 comprises a flange-like sealing module 4, which is arranged directly on the underside of the transformer cover and releasably connected to the motor drive 3, in particular screwed, is. At the transmission module 2 so that the entire on-load tap-changer 1 is fixed.
  • the gear module 2 fulfills both the task of holding the on-load tap-changer 1, as well as hermetically sealing by means of the sealing module 4 with respect to the outside of the transformer. Twists of the transformer cover during transport of the transformer are not transmitted to the on-load tap-changer 1.
  • the on-load tap-changer 1 provides vacuum interrupters 6.1 ... 6.6, two vacuum interrupters 6.1 and 6.2, or 6.3 and 6.4, and 6.5 and 6.6 each being associated with one phase of the on-load tap changer 1 and with a corresponding selector contact unit 7.1 ... 7.3 of the same phase.
  • the vacuum interrupters 6.1 ... 6.6 are known from the prior art switching means with a movable switching contact 8.1 ...
  • Each selector contact unit 7.1 ... 7.3 each comprises a plurality of connectable fixed selector contacts 9.1 ... 9.5, which are electrically connected to the winding taps of the control winding of the tapped transformer, a contact carrier 10.1 ... 10.3, each with two spring-mounted, movable selector contacts 11.1 and 2 respectively Vacuum interrupters 6.1 ... 6.6.
  • Each selector contact unit 7.1, 7.2 and 7.3 is connected to a separate phase, ie winding, of the tapped transformer.
  • the contact carrier 10.1 ... 10.3 of each phase is mechanically fixed to a slide 12.1 ... 12.3 and forms together with this a structural unit.
  • the slide 12.1 ... 12.3 is received on a guide rod 13.1 ... 13.3 and on a, to the guide rod 13.1 ... 13.3 arranged in parallel, threaded spindle 14, such that the individual fixed selector contacts 9.1 ... 9.5 by a longitudinal displacement the movable contacts 11.1 including slide 12.1 ... 12.3 along the threaded spindle 14 are connected.
  • middle positions in which the one movable selector contact, for example, the movable selector contact 11.1, the first fixed selector contact, for example, the fixed selector contact 9.1, and the other movable selector contact, for example movable selector contact, the second fixed selector contact adjacent to the first fixed selector contact, for example, the fixed selector contact 9.2, connected, as a stationary operating position of the on-load tap-changer 1 permissible.
  • the reactor switching principle in here fixed selector contacts shown 9.1 ... 9.5, while there are only 5 stationary operating positions in an on-load tap-changer 1 after theticianschnellschalt principle in which no center positions are allowed.
  • both the threaded spindle 14 is driven, which in turn is in mechanical operative connection with each of the selector contact units 7.1 ... 7.3, as well as a camshaft 25, by means of the switching means for uninterrupted switching, so the vacuum interrupters 6.1 ... 6.6, are operable.
  • the threaded spindle 14 is formed over its entire length as a threaded spindle 14 and is provided with a in each of the sliding 12.1 ... 12.3, but in the FIG. 1 and 2 not shown, spindle nut 16.1 ... 16.3 brought into engagement, such that upon rotation of the threaded spindle 14, each slide 12.1 ... 12.3 moves horizontally.
  • each movable switching contact 8.1 ... 8.6 is mechanically positively coupled with a lifting rod 26.1 ... 26.6, arranged with, on the the movable switching contacts 8.1 ... 8.6 opposite to the camshaft 25, Control cam 27.1 ... 27.6 cooperates, such that upon rotation of the camshaft 25, the control cam 27.1 ... 27.6 on the corresponding lifting rod 26.1 ... 26.6 initiates a vertical movement and thus ultimately the associated movable switching contact 8.1 ... 8.6 of corresponding vacuum interrupters 6.1 ... 6.6 actuated.
  • a rocker arm assembly could be provided which is driven by the camshaft 25.
  • more control cam 27.1 ... 27.6 per vacuum interrupter 6.1 ... 6.6 are provided on the circumference of the camshaft.
  • FIG. 3 shows the fixed selector contacts 9.1 ... 9.5, which are arranged on a contact strip 28.1 made of plastic.
  • the contact strip 28.1 ... 28.3 attached by means of two spacers 29.1 ... 29.2, which are used as a connection of an override choke or a transfer resistor, not shown.
  • Overload reactors are to be provided according to the reactor switching principle and switching resistors according to the resistance fast switching principle.
  • the contact strip 28.1 on its longitudinal side on a control cam on which both sides are arranged to vertically move the spring-mounted selector contacts 11.1 of the corresponding selector contact unit 7.1 at a longitudinal displacement of the corresponding slide 12.1 by means provided on the control cam cams, depending on the contour of the several cams.
  • the contour of the cams is dimensioned such that the movable selector contacts 11.1 of the selector contact unit 7.1 between two adjacent fixed selector contacts 9.1 ... 9.5 stand out from the currently connected fixed selector contact, here 9.1, after having completed switching the next fixed selector contact, here 9.2, reconnect. It is therefore a middle position of the movable selector contacts 11.1 on two adjacent fixed selector contacts 9.1 ... 9.5 permissible according to the reactor switching principle, while being indexed to the adjacent fixed selector contact after the lovedsschnellschaltzin. For defined contact, the contact pieces 11.1 are spherically formed on the actual contact surface.
  • the on-load tap-changer 1 according to the invention can thus be used both according to the reactor switching principle and according to the resistance rapid-switching principle.
  • 9 stationary operating positions are permitted at fixed contactors 9.1 ... 9.5 shown here according to the reactor switching principle, while only 5 stationary operating positions are permitted in a constructed according to the resistance principle switching principle on-load tap-changer 1.
  • the on-load tap-changer 1 according to the invention can be used particularly advantageously on distribution transformers for voltage regulation of local networks.

Claims (13)

  1. Commutateur à gradins en charge (1) destiné à permettre d'effectuer une commutation sans interruption entre différentes prises d'enroulement d'un transformateur à gradins,
    dans lequel
    - au moins une unité de contacts de sélecteur (7.1, 7.2, 7.3) comprenant plusieurs contacts de sélecteur fixes (9.1, 9.2, 9.3, 9.4, 9.5) qui sont, respectivement en liaison électrique avec les différentes prises d'enroulement, est montée le long d'une ligne,
    - les contacts de sélecteur fixes (9.1 ... 9.5) sont actionnés par deux contacts de sélecteur (11.1) mobiles, susceptibles de coulisser longitudinalement,
    - pour permettre la commutation sans interruption deux tubes de commutation à vide (6.1, 6.2, 6.3, 6.4, 6.5, 6.6) sont prévus pour chaque phase,
    - il est prévu un entraînement motorisé (3) pour provoquer un mouvement d'entraînement du commutateur à gradins en charge (1),
    caractérisé en ce que
    les unités de contacts de sélecteur (7.1 ... 7.3) et les tubes de commutation à vide (6.1 ... 6.6) sont actionnés directement au moyen de l'entraînement motorisé commun (3), de sorte que la transmission du mouvement d'entraînement de l'entraînement motorisé (3) aux unités de contacts de sélecteur (7.1 ... 7.3) et aux tubes de commutation à vide (6,1 ... 6,6) s'effectue sans interposition d'un accumulateur d'énergie mécanique,
    l'entraînement motorisé (4) entraîne une broche filetée (14) qui est de son côté en liaison fonctionnelle avec les unités de contacts de sélecteur (7.1 ...7.3) et également un arbre à came (25) au moyen duquel les tubes de commutation à vide (6.1 ... 6.6) sont actionnés, de sorte que les contacts de sélecteur mobiles (11.1) et également les tube de commutation à vide (6.1 ... 6.6) soient ainsi actionnés.
  2. Commutateur à gradins en charge (1) conforme à la revendication 1, en totalité installé sur la face inférieure d'un couvercle de transformateur au moyen d'un module de transmission (2).
  3. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    le module de transmission (2) comprend un module d'étanchéité (4) en forme de bride.
  4. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    il est prévu un plateau-support (5) en matériau diélectrique sur la première face duquel sont installées les unités de contacts de sélecteur (7.1 ... 7.3) et sur la seconde face duquel sont installés les tubes de commutation à vide (6.1 ... 6.6).
  5. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    chaque unité de contacts de sélecteur (7.1 ... 7.3) comprend un chariot coulissant (12.1 ... 12.3), un support de contacts (10.1 ... 10.3) ainsi que des contacts de sélecteur mobiles (11.1) qui coopèrent avec au moins un contact de sélecteur fixe (9.1 ... 9.5).
  6. Commutateur à gradins en charge (1) conforme à la revendication précédente,
    dans lequel
    chaque chariot coulissant (12.1, ... 12.3) est reçu par une tige de guidage (13.1 ... 13.3) et la broche filetée (14).
  7. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes
    dans lequel
    les contacts de sélecteur mobiles (11.1) sont respectivement logés dans un support de contact (10.1 ... 10.3) et coopèrent avec des contacts de sélecteur fixes (9.1 ... 9.5) installés sur une baguette de contact (28.1 ... 28.3).
  8. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes et à la revendication 6,
    dans lequel
    chaque unité de contacts de sélecteur (7.1 ... 7.3) est montée coulissante le long de la tige de guidage (13.1 ... 13.3) respective et de la broche filetée (14) au moyen des chariots coulissants (12.1 ... 12.3) respectifs de façon à permettre de parcourir ainsi la plage de régulation du commutateur à gradins en charge (1).
  9. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    les contacts de sélecteur mobiles (11.1) d'une phase branchent dans chaque état de fonctionnement stationnaire au moins un contact de sélecteur fixe (9.1 ... 9.5) de la même phase du commutateur à gradins en charge (1).
  10. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    deux contacts de sélecteur mobiles (11.1) sont respectivement logés élastiquement dans un support de contact (10.1 ... 10.3).
  11. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes et à la revendication 4,
    dans lequel
    les contacts de sélecteur fixes (9.1 ... 9.5) sont installés sur une baguette de contact (28.1 ... 28.3) qui est, de son côté, respectivement fixée sur le plateau support (5) par l'intermédiaire d'éléments d'écartement (29.1 ... 29.3).
  12. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes,
    dans lequel
    chaque tube de commutation à vide (6.1 ... 6.6) comprend un contact de commutation mobile (8.1 ... 8.6) qui est en liaison fonctionnelle par l'intermédiaire d'une tige de levage (26.1 ... 26.6) associée avec une came de commande (27.1 ... 27.6) associée prévue sur l'arbre à cames (25) de sorte que, lors d'une rotation de l'arbre à cames (25), le tube de commutation à vide (6.1 ... 6.6) respectif puisse être branché.
  13. Commutateur à gradins en charge (1) conforme à l'une des revendications précédentes, destiné à être utilisé pour la régulation de la tension d'un transformateur de distribution.
EP13714885.4A 2012-04-20 2013-03-25 Changeur de prises en charge Active EP2839495B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012101475U DE202012101475U1 (de) 2012-04-20 2012-04-20 Laststufenschalter
PCT/EP2013/056279 WO2013156268A1 (fr) 2012-04-20 2013-03-25 Changeur de prises en charge

Publications (2)

Publication Number Publication Date
EP2839495A1 EP2839495A1 (fr) 2015-02-25
EP2839495B1 true EP2839495B1 (fr) 2016-10-19

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Application Number Title Priority Date Filing Date
EP13714885.4A Active EP2839495B1 (fr) 2012-04-20 2013-03-25 Changeur de prises en charge

Country Status (9)

Country Link
US (1) US20150034462A1 (fr)
EP (1) EP2839495B1 (fr)
JP (1) JP2015515139A (fr)
KR (1) KR102010939B1 (fr)
CN (1) CN104246947B (fr)
DE (1) DE202012101475U1 (fr)
HK (1) HK1202977A1 (fr)
RU (1) RU2014146582A (fr)
WO (1) WO2013156268A1 (fr)

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EP3086343B1 (fr) 2015-04-21 2018-11-14 Ormazabal Corporate Technology, A.I.E. Changeur de prises en charge
DE102016104500B3 (de) * 2016-03-11 2017-05-04 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
CN106653426B (zh) * 2017-01-12 2018-08-17 济南爱迪电气设备有限公司 一种配电变压器专用有载调压开关
CN106876206A (zh) * 2017-03-31 2017-06-20 宁波安德奥电力设备有限公司 双输出直线自滑动开关
CN108695083B (zh) * 2017-04-07 2021-03-05 王守国 一种小型化智能型有载调压开关
CN106981382B (zh) * 2017-06-08 2019-05-07 山东民生电气设备有限公司 一种低压调压开关
CN109427494A (zh) * 2017-08-22 2019-03-05 济南爱迪电气设备有限公司 一种配电变压器专用有载调压开关
CN108511223B (zh) * 2018-05-26 2024-04-02 辽宁金立电力电器有限公司 卧式有载调容调压分接开关
ES1216144Y (es) 2018-06-04 2018-10-24 Ormazabal Corporate Tech A I E Sistema de contactos para dispositivo cambiador de tomas electricas en carga
CN110349777A (zh) * 2019-08-02 2019-10-18 浙江雷纽电气科技有限公司 一种有载分接开关调容调压装置及有载分接开关
CN113745014B (zh) * 2021-07-27 2022-10-04 中国电力科学研究院有限公司 一种有载分接开关的往复式切换机构
ES2936183B2 (es) 2021-09-14 2023-12-27 Univ Sevilla Interruptor estatico de corriente alterna con rango extendido de intensidad
KR102547475B1 (ko) * 2022-09-30 2023-06-28 부흥시스템(주) 아크 유도형 접점이 구비된 탭 셀렉터

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Publication number Publication date
US20150034462A1 (en) 2015-02-05
KR102010939B1 (ko) 2019-08-14
WO2013156268A1 (fr) 2013-10-24
KR20140145616A (ko) 2014-12-23
RU2014146582A (ru) 2016-06-10
CN104246947A (zh) 2014-12-24
JP2015515139A (ja) 2015-05-21
EP2839495A1 (fr) 2015-02-25
HK1202977A1 (en) 2015-10-09
CN104246947B (zh) 2016-11-09
DE202012101475U1 (de) 2013-07-23

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