EP2663989B1 - Tap changer - Google Patents
Tap changer Download PDFInfo
- Publication number
- EP2663989B1 EP2663989B1 EP11811329.9A EP11811329A EP2663989B1 EP 2663989 B1 EP2663989 B1 EP 2663989B1 EP 11811329 A EP11811329 A EP 11811329A EP 2663989 B1 EP2663989 B1 EP 2663989B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tap changer
- drive shaft
- motor
- contacts
- drive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
-
- 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
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
Die Erfindung betrifft einen Stufenschalter zur unterbrechungslosen Umschaltung zwischen Wicklungsanzapfungen eines Stufentransformators.The invention relates to a tap changer for uninterrupted switching between winding taps of a tapped transformer.
In der Regel ist seitlich außen am Transformatorenkessel des Stufentransformators oder in dessen unmittelbarer Nähe ein Motorantrieb vorgesehen, der einen Antriebsmotor und weitere Bauteile aufweist und über ein Antriebsgestänge mit dem Kopf des in den Transformatorenkessel eingebauten Stufenschalters in Verbindung steht und damit bei jeder Umschaltung den Stufenschalter motorisch betätigt. Ein typischer Motorantrieb ist beispielsweise aus der
Bei einer derartigen Betätigung eines Stufenschalters durch einen dezentral angeordneten Motorantrieb muss der Antriebszug, d. h. Antriebswellen, Winkeltrieb u. a., individuell an die jeweiligen räumlichen Verhältnisse am Transformator sowie am Stufenschalterkopf angepasst werden.In such an operation of a tap changer by a decentralized motor drive, the drive train, d. H. Drive shafts, angle drive u. a., Individually adapted to the respective spatial conditions on the transformer and the tap changer head.
Der betätigende Motorantrieb selbst muss ebenfalls auf den jeweiligen Stufenschalter, mit dem er zusammenwirken soll, abgestimmt sein. Insbesondere die Zahl der einstellbaren Spannungsstufen, die Zahl der Umdrehungen der Antriebswelle pro Umschaltung und die Art der Stellungsanzeige müssen individuell an den entsprechenden Stufenschalter angepasst werden.The actuating motor drive itself must also be matched to the respective tap changer with which it is intended to interact. In particular, the number of adjustable voltage levels, the number of revolutions of the drive shaft per switching and the type of position indicator must be individually adapted to the corresponding tap changer.
Aus der
Zwar wird bei dieser bekannten Lösung ein separates Antriebsgestänge mit Winkeltrieb entlang der Außenwandung des Transformatorenkessels vermieden, aber dennoch ist eine Anpassung und räumliche Zuordnung der Antriebseinheit bzw. des Antriebsmotors mittels der beschriebenen Kupplung an den darunter befindlichen Stufenschalter erforderlich. Insbesondere zur Montage der Antriebseinheit ist eine genaue Positionierung relativ zur Antriebswelle des Stufenschalter unabdingbar, damit es durch unerwünschtes Nichtfluchten von Wellenende des Leistungsgetriebes einerseits und Antriebswelle des Stufenschalters andererseits nicht zu Funktionsstörungen kommen kann. Ferner erfordert die bekannte Lösung, wie bereits erwähnt, in jedem Fall eine separate Kupplung und weist ein separates Hilfsgetriebe auf.
Eine weitere Stufenschalteranordnung ist aus der
Another tap changer arrangement is known from
Auch diese bekannte Anordnung ist mithin kompliziert im Aufbau und erfordert eine kundenseitige Anpassung der einzelnen Baugruppen aneinander und genaue Positionierung zueinander.Also, this known arrangement is therefore complicated in structure and requires a customer-side adaptation of the individual modules to each other and accurate positioning each other.
Aufgabe der Erfindung ist es, einen kompakten, preisgünstigen Stufenschalter anzugeben, der diese Nachteile nicht aufweist.The object of the invention is to provide a compact, low-cost tap changer, which does not have these disadvantages.
Diese Aufgabe wird durch einen Stufenschalter mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen vorteilhafte Weiterbildungen der Erfindung.This object is achieved by a tap changer having the features of the first claim. The subclaims relate to advantageous developments of the invention.
Der Erfindung liegt die allgemeine Idee zugrunde, den zum Antrieb notwendigen Motorantrieb direkt am Stufenschalterkopf, quasi als integralen Bestandteil des Stufenschalters, anzuordnen. Dabei umfasst der Motorantrieb erfindungsgemäß sowohl den eigentlichen elektrischen Antriebsmotor als auch Steuergetriebe, Überwachungs- und Anzeigeelemente.The invention is based on the general idea of arranging the motor drive necessary for the drive directly on the tap changer head, as it were, as an integral part of the tap changer. In this case, the motor drive according to the invention comprises both the actual electric drive motor and control gear, monitoring and display elements.
Erfindungsgemäß umfassen die Überwachungselemente dabei auf besonders einfache Weise sowohl die Endstellungsbegrenzung als auch die Stellungsmeldeeinrichtung. Erfindungsgemäß wirkt der elektrische Motor des Motorantriebes direkt über die Antriebswelle des Stufenschalters, mit der er ständig mechanisch in Verbindung steht, auf einen an sich bekannten Kraftspeicher.According to the invention, the monitoring elements comprise in a particularly simple manner both the end position limitation and the position signaling device. According to the invention, the electric motor of the motor drive acts directly on the drive shaft of the tap changer, with which he is constantly mechanically connected, to a known energy storage.
Nach einer bevorzugten Ausführungsform der Erfindung ist der elektrische Antriebsmotor dabei als Getriebemotor ausgebildet, so dass kein zusätzliches Übersetzungsgetriebe, wie nach dem Stand der Technik üblich, im Stufenschalter mehr erforderlich ist.According to a preferred embodiment of the invention, the electric drive motor is designed as a geared motor, so that no additional transmission gear, as usual in the prior art, the step switch is more necessary.
Bevorzugt entspricht der Drehwinkel eines solchen Getriebemotors dem Drehwinkel der Antriebswelle des Stufenschalters bei einer Lastumschaltung. Zum Beispiel kann der Drehwinkel eines solchen Getriebemotors 40 Grad/Schaltung betragen, dies entspricht einer entsprechenden Teiligkeit des Ölgefäßes, bei der sich 9 Stellungen erreichen lassen.Preferably, the angle of rotation of such a geared motor corresponds to the angle of rotation of the drive shaft of the tap changer at a load switching. For example, the angle of rotation of such a geared motor can be 40 degrees / circuit, this corresponds to a corresponding part of the oil vessel, which can reach 9 positions.
Die Erfindung soll nachfolgend an Hand von Zeichnungen beispielhaft noch näher erläutert werden.The invention will be explained in more detail by way of example with reference to drawings.
Es zeigen:
- Figur 1
- den Kopf eines erfindungsgemäßen Stufenschalters
Figur 2- Steuergetriebe und Mittel zur Überwachung und Stellungsanzeige eines solchen Stufenschalters allein in Detaildarstellung.
- FIG. 1
- the head of a tap changer according to the invention
- FIG. 2
- Control gear and means for monitoring and position indicator of such a tap changer alone in detail.
In
Das Steuergetriebe 5 weist weiterhin an sich bekannte Nockenscheiben 13 auf, die jeweils mit einer stirnseitigen Kontur versehen sind, die wiederum mit Nockenschaltern 14 korrespondieren. Oberhalb der Getriebezahnräder 9... 12 befindet sich ein Stellungsmelderad 15, das stirnseitig eine obere Teilkontur 15.1 sowie eine untere Teilkontur 15.2 aufweist. Durch diese Teilkonturen 15.1 und 15.2 werden entweder direkt oder, wie hier gezeigt, durch Klötze 15.3, 15.4 Stellungsmeldekontakte 16 betätigt.The
Zwar ist es aus der
Auf dem Stellungsmelderad 15 sind erfindungsgemäß weiterhin auf einem horizontalen Teilkreis feste Stellungmeldekontakte 16 angeordnet, von denen nicht alle mit Bezugszeichen versehen sind, deren Winkelabstand zueinander den jeweils möglichen Schaltstellungen des Stufenschalters entspricht. Ferner ist oberhalb der Stellungsmeldekontakte 16 ein je nach Schaltstellung mit diesen kontaktierbarer Schleifkontakt 17 vorgesehen.On the position indicator wheel 15 according to the invention further fixed position reporting
Ein solcher Schleifkontakt per se als Bestandteil eines separaten Motorantriebes ist aus der
Schließlich sind noch Klemmen 18 gezeigt, von denen nicht dargestellte elektrische Verbindungen zum elektrischen Anschlusselement 7 hergestellt werden.Finally,
Es ist also gezeigt, dass der eigentliche Motorantrieb, bestehend aus dem Getriebemotor 3, der direkt mit der Antriebswelle 4 des Stufenschalters in Verbindung steht, sowie dem Steuergetriebe 5 von der Abdeckhaube 6 umschlossen ist und damit oberhalb des Stufenschalterkopfes 1 direkt einen integralen Bestandteil des Stufenschalters bietet. Die Erfindung verzichtet damit auf zusätzliche weitere Getriebe im Stufenschalter zur nach dem Stand der Technik notwendigen Übersetzung der Drehbewegung, vielmehr erfolgt eine direkte Betätigung der Antriebswelle 4 und damit des Kraftspeichers des Stufenschalters durch die Hohlwelle 3.3. Gleichzeitig wird auch die gleichachsige Antriebswelle 8 des Steuergetriebes 5 betätigt. Bei der Erfindung wird die erzeugte Drehbewegung erfindungsgemäß also doppelt genutzt: Einmal zur Übertragung des Drehmomentes auf die Antriebswelle 4, zum andern zum Antrieb der Steuerungseinrichtung, bestehend aus Nockenscheibe 13 (korrespondierend mit Nockenschaltern 14) sowie Stellungsmeldekontakten 16 (korrespondierend mit dem Schleifkontakt 17) durch die Antriebswelle 8.It is thus shown that the actual motor drive, consisting of the
Bei der Erfindung ist der Motorantrieb mit seinen Komponenten integraler Bestandteil des Stufenschalters. Nicht nur Antriebsgestänge selbst, sondern auch individuelle Anpassungen, Kupplungen, Justierungen u.a. entfallen vollständig. Die Erfindung kombiniert besonders vorteilhaft die elektrische Endstellungsbegrenzung, die gemäß IEC separat für den Steuer- und den Motorstromkreis erfolgt, mit der Funktionalität der Stellungsmeldung. Bei der Erfindung ist, wie erläutert, auf vorteilhafte Weise das Stellungsmelderad 15 gleichzeitig Träger der Stellungsmeldekontakte 16, die, wie ebenfalls erläutert, von dem Schleifkontakt 17 stellungsabhängig beschaltbar sind. Dies führt zu einem insgesamt kompakten, einfachen und preisgünstigen Aufbau.In the invention, the motor drive with its components is an integral part of the tap changer. Not only drive rods themselves, but also individual adjustments, couplings, adjustments etc. are completely eliminated. The invention particularly advantageously combines the electrical limit stop, which according to IEC separately for the control and the motor circuit takes place, with the functionality of the position message. In the invention, as explained, in an advantageous manner, the position indicator wheel 15 at the same time support the
Claims (5)
- Tap changer for changeover between winding taps of a tapped transformer, comprising an oil vessel (2), in which fixed tap contacts (n, n+1, ...) are arranged, wherein a rotatable drive shaft (4), which carries movable switching means for connection with the fixed tap contacts (n, n+1, ...) and/or is mechanically connected with such switching means, is provided in the interior of the oil vessel (2),
wherein a tap changer head (1), which comprises means for transmission of a rotational movement to the drive shaft (4), is arranged above the oil vessel (2) and connected therewith,
wherein a motor drive is fixedly arranged directly at the tap changer head (1) of the tap changer,
wherein the motor drive comprises an electric motor (3.1), which is mechanically connected with the drive shaft (4),
wherein the motor drive further comprises a control transmission (5), which is drivable by the electric motor (3.1) and which has cam discs, and
wherein the control transmission (5) comprises a further drive shaft (8), which is co-axial with the drive shaft (4) extending in the oil vessel (2),
characterised in that
the fixed tap contacts (n, n+1, ...) are disposed in the wall of the oil vessel (2),
the drive shaft extends centrally in the oil vessel (2),
the cam discs (13) co-operate with cam switches (14),
the control transmission (5) comprises a similarly drivable setting reporting wheel (15) which comprises not only means for monitoring switching, but also means for reporting setting, and
the setting reporting wheel (15) has, as means for monitoring switching, at least one end profile (15.1, 15.2) by which respective setting reporting contacts (16) are actuable. - Tap changer according to claim 1, characterised in that the electric motor (3.1) is a transmission motor (3) with a transmission subassembly (3.2) integrated with the actual electric motor.
- Tap changer according to claim 2, characterised in that the transmission motor (3) has a drivable hollow shaft (3.3) mechanically connected with the drive shaft (4).
- Tap changer according to claim 3, characterised in that the hollow shaft (3.3) is mechanically connected with the further drive shaft (8).
- Tap changer according to any one of claims 1 to 4, characterised in that the setting reporting wheel (15) comprises, as means for setting reporting, setting reporting contacts (16), which are fixed on a horizontal part circle and the angular spacing of which from one another corresponds with the respective possible switching settings of the tap changer, and that a corresponding wiper contact (17), which is contactable with one of the fixed setting reporting contacts (16) depending on the respective switch setting, is arranged.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110008394 DE102011008394B4 (en) | 2011-01-12 | 2011-01-12 | step switch |
PCT/EP2011/006567 WO2012095155A1 (en) | 2011-01-12 | 2011-12-24 | Tap changer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2663989A1 EP2663989A1 (en) | 2013-11-20 |
EP2663989B1 true EP2663989B1 (en) | 2014-10-01 |
Family
ID=45524476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11811329.9A Not-in-force EP2663989B1 (en) | 2011-01-12 | 2011-12-24 | Tap changer |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2663989B1 (en) |
CN (1) | CN103282985A (en) |
BR (1) | BR112013012668A2 (en) |
DE (1) | DE102011008394B4 (en) |
WO (1) | WO2012095155A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103853074B (en) * | 2012-11-28 | 2016-05-18 | 中科英华湖州工程技术研究中心有限公司 | Sequential relay device |
CN103366994A (en) * | 2013-07-22 | 2013-10-23 | 国家电网公司 | Portable power transformer tapping switch adjusting device |
DE102014110731A1 (en) * | 2014-07-29 | 2016-02-04 | Maschinenfabrik Reinhausen Gmbh | motor drive |
CN105140008A (en) * | 2014-08-29 | 2015-12-09 | 扬州市鑫源电气有限公司 | Novel multi-gear tuning electric reactor |
CN105563115A (en) * | 2016-03-03 | 2016-05-11 | 浙江豪顿电气有限公司 | Mounting method for output voltage automatic regulator of transformer tapping switch |
CN105610362A (en) * | 2016-03-03 | 2016-05-25 | 浙江豪顿电气有限公司 | Mechanical device for automatic output voltage regulator for transformer tap switch |
CN113053680B (en) * | 2021-03-30 | 2022-07-29 | 铜陵日科电子有限责任公司 | Quick auto-change over device of transformer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2560002A (en) * | 1945-07-27 | 1951-07-10 | Allis Chalmers Mfg Co | Voltage regulating control and apparatus |
BE639326A (en) * | 1962-10-29 | |||
DE2410641A1 (en) | 1974-03-06 | 1975-09-11 | Transformatoren Union Ag | Motor drive for tap changing switch - has asynchronous or DC motor and auxiliary drive producing signals for thyristor |
DE3000789A1 (en) * | 1980-01-10 | 1981-09-03 | Siemens AG, 1000 Berlin und 8000 München | Overrun interlock for rotating shaft - has gear train driving lead-screw with set stops to trigger interlock preventing rotation of transformer switching stage |
JPH03151610A (en) * | 1989-11-09 | 1991-06-27 | Toshiba Corp | On-load tap changer |
DE19705576C2 (en) | 1997-02-14 | 1999-01-07 | Reinhausen Maschf Scheubeck | Position reporting arrangement |
DE19911539C1 (en) * | 1999-03-16 | 2000-06-21 | Reinhausen Maschf Scheubeck | Motor driven, cam-operated selector switch, has splined shaft accommodating resilient cams with correspondingly-splined and interference-fitting central opening, enabling positive, secure cam fastening and angular setting |
CA2412098A1 (en) * | 2000-05-26 | 2001-12-06 | Imperial Schrade Corp. | Multi-purpose equipment |
SE519492C2 (en) | 2000-05-26 | 2003-03-04 | Abb Ab | Actuator and winding coupler including one |
US7750257B2 (en) * | 2004-06-03 | 2010-07-06 | Cooper Technologies Company | Molded polymer load tap changer |
DE102005058793B3 (en) | 2005-12-09 | 2006-12-07 | Maschinenfabrik Reinhausen Gmbh | Switching controller for a switch-monitoring unit for switching between step-up transformer windings has cam discs connected to Maltese wheel and operating cam switches |
-
2011
- 2011-01-12 DE DE201110008394 patent/DE102011008394B4/en not_active Expired - Fee Related
- 2011-12-24 BR BR112013012668A patent/BR112013012668A2/en not_active IP Right Cessation
- 2011-12-24 EP EP11811329.9A patent/EP2663989B1/en not_active Not-in-force
- 2011-12-24 WO PCT/EP2011/006567 patent/WO2012095155A1/en active Application Filing
- 2011-12-24 CN CN2011800638587A patent/CN103282985A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102011008394B4 (en) | 2014-12-31 |
WO2012095155A1 (en) | 2012-07-19 |
CN103282985A (en) | 2013-09-04 |
DE102011008394A1 (en) | 2012-07-12 |
EP2663989A1 (en) | 2013-11-20 |
BR112013012668A2 (en) | 2016-09-06 |
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Inventor name: LEDERER, PHILIPP Inventor name: STREMPEL, ROLF Inventor name: REHKOPF, SEBASTIAN Inventor name: SCHLEPP, KLAUS Inventor name: JATTA, MARTIN Inventor name: BOEGER, CHRISTIAN Inventor name: HOTTNER, TONI |
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