EP2606499B1 - Tapped transformer with on-load tap changer - Google Patents

Tapped transformer with on-load tap changer Download PDF

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Publication number
EP2606499B1
EP2606499B1 EP11733581.0A EP11733581A EP2606499B1 EP 2606499 B1 EP2606499 B1 EP 2606499B1 EP 11733581 A EP11733581 A EP 11733581A EP 2606499 B1 EP2606499 B1 EP 2606499B1
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EP
European Patent Office
Prior art keywords
transformer
winding
selector
diverter switch
tapped transformer
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
EP11733581.0A
Other languages
German (de)
French (fr)
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EP2606499A1 (en
Inventor
Juergen Donhauser
Roland Meisel
Christian Pircher
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
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Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP2606499A1 publication Critical patent/EP2606499A1/en
Application granted granted Critical
Publication of EP2606499B1 publication Critical patent/EP2606499B1/en
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Classifications

    • 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
    • H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
    • 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
    • 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
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • 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
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing
    • 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
    • H01H9/0011—Voltage selector switches

Definitions

  • the 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 are known to be used for uninterrupted switching between different winding taps of a tapped transformer and thus for voltage regulation. They usually consist of a selector for powerless preselection of those winding tap of the tapped transformer to be switched to, as well as a diverter switch for the actual uninterrupted switching from the previously wired winding tap to the new, preselected winding tap.
  • the diverter switch has the necessary for such an uninterrupted, fast switching components, in particular a force storage device, a drive shaft, switching contacts - this can be mechanical switching contacts, vacuum switching cells or thyristors -, and means for actuating the switch contacts in a predetermined switching sequence at each switching.
  • Known diverter switch also usually have its own oil vessel, usually in the form of a closed insulating cylinder, in which, separated from the surrounding oil of the transformer, all the above components are.
  • the selector Directly below the diverter switch, but in the transformer oil, is the selector arranged, which is connected via a gear stage with the central drive shaft of the diverter switch.
  • the central drive shaft of the diverter switch is driven by a motor drive which is arranged outside the transformer tank and slowly draws up the energy accumulator by means of a linkage which is likewise guided along the transformer tank and at the same time also actuates the selector.
  • the central drive shaft is thus responsible for both the operation of the switching contacts of the diverter switch during the actual fast switching, as well as for the operation of the arranged directly below the diverter switch selector during the slow Aufziehvorgangs the force accumulator.
  • on-load tap-changers have been established on the market for decades and are known, for example, from the company publication by the applicant "Oiltap® M on-load tap-changer for regulating transformers".
  • On page 1 of the company publication a generic on-load tap-changer is shown, which has a diverter switch in the upper area, within the insulating cylinder, and directly thereto then the connected via a gear stage with the drive shaft of the diverter switch voters.
  • tap-changer type G shows a typical arrangement of a generic on-load tap-changer in the configuration, d. H. the interplay, tap-changer - regulating transformer.
  • an on-load tap-changer ie diverter switch and associated selector
  • diverter switch and associated selector is arranged at a certain dielectric distance from the individual windings of the transformer inside the transformer tank and the walls of the transformer housing.
  • a significant footprint within the transformer takes in addition to the on-load tap, consisting of diverter switch and directly below subsequent selector, the installation of the individual, dielectrically insulated copper wires from the corresponding winding taps of the control winding of the transformer to the respective selector contacts to complete.
  • the wiring, attached to the transformer active by the diverter but is not only time-consuming in its installation, but because of its required electrically conductive properties made of copper and thus very expensive.
  • DE 101 02 310 C1 discloses a tapped transformer with a thyristor tap changer consisting of a mechanical tap changer and a diverter switch with thyristors as switching means.
  • the tap changer is housed in the oil-filled transformer tank, while the diverter switch with the thyristors is located in a laterally mounted separate housing in air.
  • DE 676 208 discloses a tapped transformer having a tap changer disposed immediately adjacent to the control winding of the transformer in the oil tank of the transformer.
  • step transformers with tap changer are in DE 25 29 381 .
  • Object of the present invention is therefore to provide an on-load tap-changer of the type mentioned above, which allows the transformer builder a more flexible design option of his transformer and also makes the space-consuming and expensive wiring with all of the diverter scaffold unnecessary.
  • the general inventive idea is to dissolve the previously static design of the on-load tap changer, consisting of diverter switch and directly below subsequent voters, and bring about a spatial separation of the two modules diverter switch and selector by the voter while possible in the vicinity of the winding taps of the control winding of the Step transformer is arranged.
  • the connection lines between the corresponding terminal contacts of the selector and the individual winding taps of the control coil winding of the tapped transformer can be reduced to a minimum, in particular makes this the costly and expensive wiring together with the diverter unnecessary.
  • the at least one selector is arranged directly on the winding taps of the control winding of the transformer, that is, in its gusset.
  • the linkage which connects the motor drive with the energy storage of the diverter switch, continued directly inside the transformer tank from the diverter switch to the selector and thus used in a particularly simple manner to drive the selector.
  • the linkage is no longer, as before, performed on the outside of the transformer box along the top and connected there only to the energy storage of the on-load tap changer, but directly through a lateral wall of the transformer tank.
  • the diverter switch and the at least one selector are each actuated with a special drive, for example in the form of a direct drive motor.
  • a special drive for example in the form of a direct drive motor.
  • the motor-driven direct drive is a linear or torque motor, then it is also possible to dispense with the otherwise functionally required spring energy accumulator in the case of the diverter switch.
  • FIG. 1 a transformer tank 1 is shown, inside which there is a yoke 7, on which at least one winding, comprising a main winding and a control winding with winding taps 8, is arranged.
  • a motor drive 2 On the outer side wall of the transformer box 1 is still a motor drive 2, which establishes a linkage 3 via a linkage to a arranged in the interior of the transformer tank 1 diverter switch 4 and at least one selector 5.
  • the diverter switch 4 in this FIG. 1 is shown only in a very abstract form, it is an example of the already mentioned company publication "Oiltap® M on-load tap-changer for control transformers" the Applicant become known diverter 4.
  • This diverter switch 4 is electrically connected via lines 6 to the corresponding selector 5.
  • the at least one selector 5 is positioned directly on winding taps 8 of the control winding of the transformer, which shortens the connecting lines between the corresponding terminal contacts of the selector and the individual winding taps 8 of the control winding of the tapped transformer to a minimum.
  • the linkage 3, which is driven centrally via a single motor drive 2 is designed such that it is in operative connection both with the diverter switch 4 and with the at least one selector 5.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Control Of Electrical Variables (AREA)

Description

Die Erfindung betrifft einen Laststufenschalter zur unterbrechungslosen Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators
gemäß dem Oberbegriff des ersten Patentanspruches.The 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.

Laststufenschalter dienen bekanntermaßen zur unterbrechungslosen Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators und damit zur Spannungsregelung. Sie bestehen üblicherweise aus einem Wähler zur leistungslosen Vorwahl derjenigen Wicklungsanzapfung des Stufentransformators, auf die umgeschaltet werden soll, sowie einem Lastumschalter zur eigentlichen unterbrechungslosen Umschaltung von der bisherig beschalteten Wicklungsanzapfung auf die neue, vorgewählte Wicklungsanzapfung. Der Lastumschalter besitzt dazu die für eine solche unterbrechungslose, schnelle Umschaltung erforderlichen Bauteile, insbesondere einen Kraftspeicher, eine Antriebswelle, Schaltkontakte - dies können mechanische Schaltkontakte, Vakuumschaltzellen oder auch Thyristoren sein -, sowie Mittel zur Betätigung der Schaltkontakte in einer vorgegebenen Schaltsequenz bei jedem Umschaltvorgang.On-load tap-changers are known to be used for uninterrupted switching between different winding taps of a tapped transformer and thus for voltage regulation. They usually consist of a selector for powerless preselection of those winding tap of the tapped transformer to be switched to, as well as a diverter switch for the actual uninterrupted switching from the previously wired winding tap to the new, preselected winding tap. The diverter switch has the necessary for such an uninterrupted, fast switching components, in particular a force storage device, a drive shaft, switching contacts - this can be mechanical switching contacts, vacuum switching cells or thyristors -, and means for actuating the switch contacts in a predetermined switching sequence at each switching.

Bekannte Lastumschalter weisen in der Regel zudem ein eigenes Ölgefäß, üblicherweise in Form eines geschlossenen Isolierstoffzylinders, auf, in dem sich, getrennt vom umgebenden Öl des Transformators, alle genannten Bauteile befinden. Direkt unterhalb des Lastumschalters, allerdings im Transformatoröl, befindet sich der Wähler angeordnet, der über eine Getriebestufe mit der zentralen Antriebswelle des Lastumschalters verbunden ist. Getrieben wird die zentrale Antriebswelle des Lastumschalters über einen außerhalb des Transformatorkessels angeordneten Motorantrieb, der mittels eines ebenfalls am Transformatorkessel außen entlang geführten Gestänge den Kraftspeicher langsam aufzieht und dabei gleichzeitig auch den Wähler betätigt. Die zentrale Antriebswelle ist damit sowohl für die Betätigung der Schaltkontakte des Lastumschalters während der eigentlichen schnellen Umschaltung, als auch zur Betätigung des direkt unterhalb des Lastumschalters angeordneten Wählers während des langsamen Aufziehvorgangs des Kraftspeichers zuständig.Known diverter switch also usually have its own oil vessel, usually in the form of a closed insulating cylinder, in which, separated from the surrounding oil of the transformer, all the above components are. Directly below the diverter switch, but in the transformer oil, is the selector arranged, which is connected via a gear stage with the central drive shaft of the diverter switch. The central drive shaft of the diverter switch is driven by a motor drive which is arranged outside the transformer tank and slowly draws up the energy accumulator by means of a linkage which is likewise guided along the transformer tank and at the same time also actuates the selector. The central drive shaft is thus responsible for both the operation of the switching contacts of the diverter switch during the actual fast switching, as well as for the operation of the arranged directly below the diverter switch selector during the slow Aufziehvorgangs the force accumulator.

Derartige Laststufenschalter sind seit Jahrzehnten am Markt etablierte Produkte und beispielweise aus der Firmendruckschrift der Anmelderin "Oiltap® M Laststufenschalter für Regeltransformatoren" bekannt. Auf Seite 1 der Firmendruckschrift ist ein gattungsgemäßer Laststufenschalter gezeigt, der im oberen Bereich, innerhalb des Isolierzylinders, einen Lastumschalter aufweist und direkt daran anschließend den über eine Getriebestufe mit der Antriebwelle des Lastumschalters verbundenen Wähler. Nicht gezeigt in dieser Darstellung ist der Kraftspeicher und der mittels eines Gestänges mit diesem in Wirkverbindung stehende Motorantrieb.Such on-load tap-changers have been established on the market for decades and are known, for example, from the company publication by the applicant "Oiltap® M on-load tap-changer for regulating transformers". On page 1 of the company publication a generic on-load tap-changer is shown, which has a diverter switch in the upper area, within the insulating cylinder, and directly thereto then the connected via a gear stage with the drive shaft of the diverter switch voters. Not shown in this illustration is the energy storage and by means of a linkage with this operatively connected motor drive.

Dieser beschriebene und seit Jahrzehnten im Stand der Technik gängige Aufbau ist jedoch für den Trafobauer platzraubend, da er einen relativ großen Bauraum innerhalb des Transformatorkessel einnimmt und damit die Freiheitsgrade des Trafobauers bei der Konstruktion des eigentlichen Transformators im platzmäßig beschränkten Transformatorkessel einschränkt. Letzen Endes deshalb, weil für den Ort der Platzierung des Laststufenschalters ein relativ großer Bauraum innerhalb des Transformatorkessels frei gelassen werden muss und dieser Raum noch dazu nicht flexibel gestaltbar ist, sondern durch den aus dem Stand der Technik bekannten Aufbau des Laststufenschalters, bestehend aus Lastumschalter und direkte unterhalb angeordnetem Wähler, quasi vorgegeben ist.However, this construction, which has been common in the prior art for decades, is space-consuming for the transformer builder since it occupies a relatively large installation space within the transformer tank and thus limits the degrees of freedom of the transformer transformer in the construction of the actual transformer in the space-constrained transformer tank. Last but not least, because the place of placement of the on-load tap-changer a relatively large space inside the transformer tank must be left free and this space is not flexible designed, but by the known from the prior art construction of the on-load tap changer, consisting of diverter switch and direct voter located below, as it were predetermined.

Die Firmendruckschrift "Stufenschalter Typ G" der Anmelderin zeigt dabei eine typische Anordnung eines gattungsgemäßen Laststufenschalters in der Konfiguration, d. h. dem Zusammenspiel, Stufenschalter - Regeltransformator. Wie auf dem Deckblatt ersichtlich, wird ein derartiger Laststufenschalter, also Lastumschalter und dazugehöriger Wähler, in einem gewissen dielektrischen Abstand zu den einzelnen Wicklungen des Transformators innerhalb des Transformatorkessels und den Wandungen des Transformatorgehäuses angeordnet. Einen wesentlichen Platzbedarf innerhalb des Transformators nimmt dabei neben dem Laststufenschalter, bestehend aus Lastumschalter und sich direkt unterhalb anschließendem Wähler, die Installation der einzelnen, dielektrisch isolierten Kupferleitungen von den entsprechenden Wicklungsanzapfungen der Regelwicklung des Transformators zu den jeweiligen Wählerkontakten in Anspruch. Die Leitungsführung, am Transformatoraktivteil befestigt durch das Ableitgerüst, ist aber nicht nur zeitaufwändig in seiner Installation, sondern auf Grund seiner geforderten elektrisch leitenden Eigenschaften aus Kupfer gefertigt und damit sehr teuer.The company publication "tap-changer type G" of the applicant shows a typical arrangement of a generic on-load tap-changer in the configuration, d. H. the interplay, tap-changer - regulating transformer. As can be seen on the cover sheet, such an on-load tap-changer, ie diverter switch and associated selector, is arranged at a certain dielectric distance from the individual windings of the transformer inside the transformer tank and the walls of the transformer housing. A significant footprint within the transformer takes in addition to the on-load tap, consisting of diverter switch and directly below subsequent selector, the installation of the individual, dielectrically insulated copper wires from the corresponding winding taps of the control winding of the transformer to the respective selector contacts to complete. The wiring, attached to the transformer active by the diverter, but is not only time-consuming in its installation, but because of its required electrically conductive properties made of copper and thus very expensive.

DE 101 02 310 C1 offenbart einen Stufentransformator mit einem Thyristor-Stufenschalter, der aus einem mechanischen Stufenwähler und einem Lastumschalter mit Thyristoren als Schaltmitteln besteht. Dabei ist der Stufenwähler im ölgefüllten Transformatorkessel untergebracht, während der Lastumschalter mit den Thyristoren sich in einem seitlich angebauten separaten Gehäuse in Luft befindet. DE 101 02 310 C1 discloses a tapped transformer with a thyristor tap changer consisting of a mechanical tap changer and a diverter switch with thyristors as switching means. The tap changer is housed in the oil-filled transformer tank, while the diverter switch with the thyristors is located in a laterally mounted separate housing in air.

DE 676 208 offenbart einen Stufentransformator mit einem Stufenschalter, der unmittelbar neben der Regelwicklung des Transformators in den Ölkessel des Transformators angeordnet ist. DE 676 208 discloses a tapped transformer having a tap changer disposed immediately adjacent to the control winding of the transformer in the oil tank of the transformer.

Weitere Stufentransformatoren mit Stufenschalter sind in DE 25 29 381 , DE 103 15 207 A1 , DE 10 2008 027 274 B3 , EP 0 140 209 A1 , DE 25 48 408 und JP 60177609 offenbart.Further step transformers with tap changer are in DE 25 29 381 . DE 103 15 207 A1 . DE 10 2008 027 274 B3 . EP 0 140 209 A1 . DE 25 48 408 and JP 60177609 disclosed.

Aufgabe der vorliegenden Erfindung ist es daher, einen Laststufenschalter der eingangs genannten Art anzugeben, der dem Trafobauer eine flexiblere Gestaltungsmöglichkeit seines Transformators erlaubt und zudem die platzraubende und teure Leitungsführung mit samt des Ableitgerüstes entbehrlich macht.Object of the present invention is therefore to provide an on-load tap-changer of the type mentioned above, which allows the transformer builder a more flexible design option of his transformer and also makes the space-consuming and expensive wiring with all of the diverter scaffold unnecessary.

Diese Aufgabe wird durch einen Laststufenschalter mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen dabei besonders bevorzugte Weiterbildungen der Erfindung.This object is achieved by an on-load tap changer having the features of the first claim. The subclaims relate to particularly preferred developments of the invention.

Die allgemeine erfinderische Idee besteht darin, die bisher statische Konstruktion des Laststufenschalters, bestehend aus Lastumschalter und sich direkt darunter anschließendem Wähler, aufzulösen und eine räumliche Trennung der beiden Baugruppen Lastumschalter und Wähler herbeizuführen, indem der Wähler dabei möglichst in der Nähe der Wicklungsanzapfungen der Regelwicklung des Stufentransformators angeordnet wird. Damit können die Verbindungsleitungen zwischen den entsprechenden Anschlusskontakten des Wählers und den einzelnen Wicklungsanzapfungen der Regelwicklungswicklung des Stufentransformators auf ein Minimum verkürzt werden, insbesondere macht dies die aufwändige und teure Leitungsführung mit samt dem Ableitgerüst entbehrlich.The general inventive idea is to dissolve the previously static design of the on-load tap changer, consisting of diverter switch and directly below subsequent voters, and bring about a spatial separation of the two modules diverter switch and selector by the voter while possible in the vicinity of the winding taps of the control winding of the Step transformer is arranged. Thus, the connection lines between the corresponding terminal contacts of the selector and the individual winding taps of the control coil winding of the tapped transformer can be reduced to a minimum, in particular makes this the costly and expensive wiring together with the diverter unnecessary.

Gemäss der Erfindung wird der wenigstens eine Wähler direkt an den Wicklungsanzapfungen der Regelwicklung des Transformators, also in dessen Zwickel, angeordnet. Indem der bisher vorgesehene Bauraum für den Wähler innerhalb des Transformatorkessel damit wegfallen kann und dieser statt dessen in dem ohnehin vorhanden Bauraum des Zwickel, direkt an den Wicklungsanzapfungen der Regelwicklung der Transformatorwicklung, platziert wird, schafft die räumliche Auflösung der Baugruppen Lastumschalter- Wähler im Transformatorkessel Platz.According to the invention, the at least one selector is arranged directly on the winding taps of the control winding of the transformer, that is, in its gusset. By thus eliminating the previously provided space for the voter within the transformer tank and this is instead placed in the already existing space of the gusset, directly to the winding taps of the control winding of the transformer winding, creates the spatial resolution of the modules diverter switch selector in the transformer tank space ,

Nach einer weiteren bevorzugten Ausführungsform der Erfindung wird das Gestänge, welches den Motorantrieb mit dem Kraftspeicher des Lastumschalters verbindet, direkt im Inneren des Transformatorkessel vom Lastumschalter zum Wähler weitergeführt und damit auf besonders einfache Weise genutzt, auch den Wähler anzutreiben.According to a further preferred embodiment of the invention, the linkage, which connects the motor drive with the energy storage of the diverter switch, continued directly inside the transformer tank from the diverter switch to the selector and thus used in a particularly simple manner to drive the selector.

Nach einer nochmals weiteren Ausführungsform der Erfindung wird das Gestänge dabei nicht mehr, wie bisher, an der Außenseite des Trafokessels entlang zu dessen Oberseite geführt und dort erst mit dem Kraftspeicher des Laststufenschalters verbunden, sondern direkt durch eine seitliche Wandung des Transformatorkessels.According to yet another embodiment of the invention, the linkage is no longer, as before, performed on the outside of the transformer box along the top and connected there only to the energy storage of the on-load tap changer, but directly through a lateral wall of the transformer tank.

Nach einer wiederum weiteren bevorzugten Ausführungsform der Erfindung werden der Lastumschalter und der wenigstens eine Wähler jeweils mit einem speziellen Antrieb, beispielsweise in Form eines motorischen Direktantriebes, betätigt. Dieser macht den bisher funktional notwendigen zentralen Motorantrieb samt aufwändigem Gestänge zum Lastumschalter entbehrlich und kann direkt oberhalb oder unterhalb des Lastumschalters oder des wenigstens einen Wählers angeordnet werden. Handelt es sich bei dem motorischen Direktantrieb um einen Linear- oder Torquemotor, so kann bei dem Lastumschalter zudem auf den ansonsten funktional zwingend erforderlichen Federkraftspeicher verzichtet werden.According to yet another preferred embodiment of the invention, the diverter switch and the at least one selector are each actuated with a special drive, for example in the form of a direct drive motor. This makes the hitherto functionally necessary central motor drive together with elaborate linkage to the diverter switch dispensable and can be arranged directly above or below the diverter switch or the at least one selector. If the motor-driven direct drive is a linear or torque motor, then it is also possible to dispense with the otherwise functionally required spring energy accumulator in the case of the diverter switch.

Die Erfindung wird nachfolgend an Hand einer Figur noch beispielhaft näher erläutert.The invention will be explained in more detail by way of example with reference to a figure.

Es zeigt

Figur 1
eine schematische Darstellung eines erfindungsgemäßen Laststufenschalter mit räumlich getrenntem Lastumschalter und Wähler.
It shows
FIG. 1
a schematic representation of an on-load tap changer according to the invention with spatially separated diverter switch and selector.

In Figur 1 ist ein Transformatorkessel 1 gezeigt, in dessen Inneren sich ein Joch 7 befindet, an dem wenigstens eine Wicklung, umfassend eine Stammwicklung und eine Regelwicklung mit Wicklungsanzapfungen 8, angeordnet ist. An der äußeren seitlichen Wandung des Trafokessels 1 befindet sich weiterhin ein Motorantrieb 2, der über ein Gestänge 3 eine Wirkverbindung zu einem im Inneren des Transformatorkessels 1 angeordneten Lastumschalter 4 und wenigstens einem Wähler 5 herstellt. Bei dem Lastumschalter 4, der in dieser Figur 1 nur in sehr abstrahierter Form dargestellt ist, handelt es sich um einen beispielsweise aus der bereits genannten Firmendruckschrift "Oiltap® M Laststufenschalter für Regeltransformatoren" der Anmelderin bekannt gewordenen Lastumschalter 4. Dieser Lastumschalter 4 ist über Leitungen 6 mit dem entsprechenden Wähler 5 elektrisch verbunden. Erfindungsgemäß wird der wenigstens eine Wähler 5 direkt an Wicklungsanzapfungen 8 der Regelwicklung des Transformators positioniert, was die Verbindungsleitungen zwischen den entsprechenden Anschlusskontakten des Wählers und den einzelnen Wicklungsanzapfungen 8 der Regelwicklung des Stufentransformators auf ein Minimum verkürzt. Insbesondere entfallen mit der erfindungsgemäßen Lösung die in der Installation aufwändigen und zudem teuren Verbindungsleitungen mit samt dem Ableitgerüst. Das zentral über einen einzigen Motorantrieb 2 angetriebene Gestänge 3 ist derart ausgebildet, dass es sowohl mit dem Lastumschalter 4 als auch mit dem wenigstens einem Wähler 5 in Wirkverbindung steht.In FIG. 1 a transformer tank 1 is shown, inside which there is a yoke 7, on which at least one winding, comprising a main winding and a control winding with winding taps 8, is arranged. On the outer side wall of the transformer box 1 is still a motor drive 2, which establishes a linkage 3 via a linkage to a arranged in the interior of the transformer tank 1 diverter switch 4 and at least one selector 5. In the diverter switch 4, in this FIG. 1 is shown only in a very abstract form, it is an example of the already mentioned company publication "Oiltap® M on-load tap-changer for control transformers" the Applicant become known diverter 4. This diverter switch 4 is electrically connected via lines 6 to the corresponding selector 5. According to the invention, the at least one selector 5 is positioned directly on winding taps 8 of the control winding of the transformer, which shortens the connecting lines between the corresponding terminal contacts of the selector and the individual winding taps 8 of the control winding of the tapped transformer to a minimum. In particular, with the solution according to the invention eliminates the costly in the installation and also expensive connecting lines together with the diverter. The linkage 3, which is driven centrally via a single motor drive 2, is designed such that it is in operative connection both with the diverter switch 4 and with the at least one selector 5.

Claims (4)

  1. Tapped transformer comprising:
    - a transformer vessel (1), in which at least one winding comprising a main winding and a regulating winding with winding taps (8), is arranged,
    - an on-load tap changer for uninterrupted switching over between the winding taps of the regulating winding, comprising
    • a selector (5) for power-free selection of the respective winding tap which is to be switched over to and
    • a load changeover switch (4) for the actual switching over from the connected to the new, preselected winding tap (8),
    wherein
    - the selector (5) and the load changeover switch (4) are arranged spatially separately from one another,
    characterised in that
    - the selector (5) is arranged directly at the winding taps (8) of the regulating winding of the tapped transformer, in the constructional space of an interstice present in the transformer vessel.
  2. Tapped transformer according to the preceding claim, wherein
    - the selector (5) and the load changeover switch (4) are drivable by way of a common linkage (3).
  3. Tapped transformer according to the preceding claim, wherein
    - the linkage (3) is led through the lateral wall into the transformer vessel (1).
  4. Tapped transformer according to claim 1, wherein
    - the load changeover switch (4) is arranged in the interior of the transformer vessel (1).
EP11733581.0A 2010-08-18 2011-07-07 Tapped transformer with on-load tap changer Active EP2606499B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010011521U DE202010011521U1 (en) 2010-08-18 2010-08-18 OLTC
PCT/EP2011/003393 WO2012022396A1 (en) 2010-08-18 2011-07-07 On-load tap changer

Publications (2)

Publication Number Publication Date
EP2606499A1 EP2606499A1 (en) 2013-06-26
EP2606499B1 true EP2606499B1 (en) 2019-06-19

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ID=44628667

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EP11733581.0A Active EP2606499B1 (en) 2010-08-18 2011-07-07 Tapped transformer with on-load tap changer

Country Status (12)

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US (1) US9412527B2 (en)
EP (1) EP2606499B1 (en)
JP (1) JP2013537717A (en)
KR (1) KR20130100097A (en)
CN (1) CN103069516B (en)
BR (1) BR112013001700A2 (en)
CA (1) CA2808506A1 (en)
DE (1) DE202010011521U1 (en)
ES (1) ES2746211T3 (en)
RU (1) RU2013111834A (en)
UA (1) UA110941C2 (en)
WO (1) WO2012022396A1 (en)

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DE102012103736A1 (en) * 2012-04-27 2013-10-31 Maschinenfabrik Reinhausen Gmbh Method for monitoring the operation of a tap changer
DE102012105152B4 (en) 2012-06-14 2015-11-12 Maschinenfabrik Reinhausen Gmbh On-load tap-changer for uninterrupted switching between different winding taps of a tapped transformer
DE102013100263A1 (en) 2013-01-11 2014-07-31 Maschinenfabrik Reinhausen Gmbh On-load tap-changer with a connection to the oil volume of a transformer
DE102013100264A1 (en) 2013-01-11 2014-07-17 Maschinenfabrik Reinhausen Gmbh On-load tap-changer with a connection to the oil volume of a transformer
DE102013100266A1 (en) 2013-01-11 2014-07-17 Maschinenfabrik Reinhausen Gmbh OLTC
ES2705325T3 (en) * 2013-08-27 2019-03-22 Reinhausen Maschf Scheubeck On-load tap changer, transformer with sockets for voltage regulation and procedure for carrying out a switchover in the transformer with sockets
WO2019183407A1 (en) * 2018-03-21 2019-09-26 Magnetic Pumping Solutions, Llc Method and system for controlling downhole pumping systems
WO2019186580A1 (en) * 2018-03-27 2019-10-03 Seetharaman Ponraj Form 2
DE102018208612A1 (en) * 2018-05-30 2019-12-05 Siemens Aktiengesellschaft transformer
DE102019112717A1 (en) 2019-05-15 2020-11-19 Maschinenfabrik Reinhausen Gmbh Drive system for a switch and a method for driving a switch
DE102019112715B3 (en) * 2019-05-15 2020-10-01 Maschinenfabrik Reinhausen Gmbh Method for performing a switchover of an on-load tap-changer by means of a drive system and a drive system for an on-load tap-changer
DE102019112720A1 (en) 2019-05-15 2020-11-19 Maschinenfabrik Reinhausen Gmbh Method for carrying out a changeover of a switch and drive system for a switch
DE102019130460A1 (en) * 2019-11-12 2021-05-12 Maschinenfabrik Reinhausen Gmbh On-load tap-changer

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Also Published As

Publication number Publication date
WO2012022396A1 (en) 2012-02-23
RU2013111834A (en) 2014-09-27
ES2746211T3 (en) 2020-03-05
US9412527B2 (en) 2016-08-09
US20130206555A1 (en) 2013-08-15
CN103069516B (en) 2016-01-20
DE202010011521U1 (en) 2011-11-23
UA110941C2 (en) 2016-03-10
EP2606499A1 (en) 2013-06-26
CA2808506A1 (en) 2012-02-23
BR112013001700A2 (en) 2016-05-24
JP2013537717A (en) 2013-10-03
CN103069516A (en) 2013-04-24
KR20130100097A (en) 2013-09-09

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