EP2638553A1 - On-load tap changer - Google Patents

On-load tap changer

Info

Publication number
EP2638553A1
EP2638553A1 EP11776703.8A EP11776703A EP2638553A1 EP 2638553 A1 EP2638553 A1 EP 2638553A1 EP 11776703 A EP11776703 A EP 11776703A EP 2638553 A1 EP2638553 A1 EP 2638553A1
Authority
EP
European Patent Office
Prior art keywords
load
tap
winding
contact
branch
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.)
Granted
Application number
EP11776703.8A
Other languages
German (de)
French (fr)
Other versions
EP2638553B1 (en
Inventor
Christian Hammer
Silke Wrede
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
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 EP2638553A1 publication Critical patent/EP2638553A1/en
Application granted granted Critical
Publication of EP2638553B1 publication Critical patent/EP2638553B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01H9/0038—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

Definitions

  • the invention relates to a tap changer for uninterrupted switching between
  • a tap changer which has a total of four vacuum interrupters per phase.
  • each of the two load branches are each a vacuum interrupter as
  • Overload resistor designed as a resistance contact.
  • the main contact of the disconnecting side is first opened, then closes the resistor contact the receiving side, so that between the two stages n and n + 1 through the switching resistors limited compensating current flows.
  • the vacuum interrupter of the switched load branch carries the continuous current in steady state operation.
  • the object of the invention is therefore to provide a tap changer of the type mentioned above, which allows the management of high continuous currents without additional mechanical permanent contacts.
  • the general inventive idea is to divide the continuous current to all acting as a main contact switching elements of both load branches and in addition to the at least one switching element in the current-carrying load branch that - anyway existing, but functionally in the prior art - at least one switching element in not the load current leading Load branch in the continuous current to include.
  • the object of the invention is achieved without more switching elements or larger sized switching elements would be required.
  • FIG. 1 shows a tap changer according to the invention, here with vacuum interrupters as
  • Figure 8 shows different steps during a load switching to the new
  • a first load branch is provided in which a vacuum interrupter MSV1 acting as the main contact and, in parallel, a reversing resistor R1 and a vacuum interrupter TTV1 acting as a resistance contact are located.
  • Lastzweig owns quite analogous a vacuum interrupter MSV2 and parallel to another over-resistance R2 and a vacuum interrupter TTV2. Up to this point, the circuit corresponds to the prior art.
  • a first mechanical change-over contact MTF1 is provided in the first load branch, through which the side of the vacuum interrupter not connected to the load discharge line L MSV1 optionally with the previous tapping n the step winding or the new
  • Winding tap n + 1 is connectable.
  • a second mechanical changeover contact MTF2 is furthermore provided in the second load branch, by means of which the side of the vacuum interrupter MSV2 not connected to the load lead L can also be selectively connected to the previous tap n of the tap winding or to the new winding tap n + 1.
  • Vacuum switch tube MSV1 alone would carry the continuous current.
  • Vacuum switching tubes MSV1 and MSV2 split; each of these two vacuum interrupters must therefore only carry half the load current IL as a continuous current.
  • tap changer according to the invention can be shown from the winding tap n on the winding tapping n + 1.
  • U s t denotes the step voltage between the two
  • FIG. 1a The tapping n is still connected in a stationary manner, as already explained with reference to FIG. 1a. Open the vacuum interrupters TTV2 and MSV2; switching starts with this step.
  • FIG. 2 The vacuum interrupters TTV2 and SV2 are open, now the mechanical contact MTF2 switches.
  • the load current IL now flows exclusively via the left load branch.
  • FIG. 3 The vacuum interrupter MSV1 has opened, the load current commutes to the
  • Resistance branch consisting of the series connection of the vacuum tube TTV1 and the resistor R1.
  • FIG. 4 The vacuum interrupter TTV2 in the right-hand resistance branch is now closed; a circulating current Ic flows.
  • FIG. 5 The vacuum interrupter TTV1 is now open, the right resistance branch, consisting of the series connection of the vacuum interrupter TTV2 and the resistor R2, takes over
  • FIG. 6 The vacuum interrupter MSV2 closes and takes over the power supply, at the same time the mechanical changeover contact MTF1 is actuated.
  • FIG. 7 Close the vacuum interrupters and MSV1 and TTV1 of the left load branch.
  • FIG. 8 The new stationary end state has been reached; the switching is completed. N, the load current IL from the winding tap + 1 is distributed over the two vacuum switching tubes MSV1 and MSV2, each carrying half the load current 1 IL, towards the load shunt L.
  • the mechanical contacts (MTF1, MTF2) are of identical construction and / or a single assembly summarized.
  • the invention is not limited to the use of vacuum interrupters as switching elements. Within the scope of the invention are also tap changers with mechanical contacts or

Abstract

The invention relates to an on-load tap changer for the uninterrupted changeover between two winding taps of a tap-changing transformer, wherein two load branches are provided such that the one load branch is electrically connected to the first winding tap, and the other load branch is electrically connected to the second winding tap. Each load branch is provided with at least one switch element acting as the main contact and is connected to a common load diverter. According to the invention, a first mechanical changeover contact is provided in the first load branch, wherein by means of said contact the side, which faces away from the load diverter, of the first switch element acting as the main contact can optionally be connected to the first winding tap or the second winding tap. A second mechanical changeover contact is provided in the second load branch, wherein by means of said contact the side, which faces away from the load diverter, of the second switch element acting as the main contact can likewise optionally be connected to either the first winding tap or the second winding tap. Thus, the constant current flowing during stationary operation is advantageously divided between the switch elements in both load branches.

Description

Stufenschalter  step switch
Die Erfindung betrifft einen Stufenschalter zur unterbrechungslosen Umschaltung zwischen The invention relates to a tap changer for uninterrupted switching between
Wicklungsanzapfungen eines Stufentransformators gemäß dem Oberbegriff des ersten Winding taps of a tapped transformer according to the preamble of the first
Patentanspruches. Claim.
Aus der DE 20 21 575 ist ein Stufenschalter bekannt, der insgesamt vier Vakuumschaltröhren pro Phase aufweist. In jedem der beiden Lastzweige sind jeweils eine Vakuumschaltröhre als From DE 20 21 575 a tap changer is known which has a total of four vacuum interrupters per phase. In each of the two load branches are each a vacuum interrupter as
Hauptkontakt und jeweils eine weitere Vakuumschaltröhre, in Reihenschaltung mit einem Main contact and one more vacuum interrupter, in series with a
Überschaltwiderstand, als Widerstandskontakt vorgesehen. Overload resistor, designed as a resistance contact.
Bei einer unterbrechungslosen Lastumschaltung von der bisherigen Wicklungsanzapfung n auf eine neue, vorgewählte Wicklungsanzapfung n+1 wird zunächst der Hauptkontakt der abschaltenden Seite geöffnet, darauf schließt der Widerstandskontakt der übernehmenden Seite, so dass zwischen den beiden Stufen n und n+1 ein durch die Überschaltwiderstände begrenzter Ausgleichsstrom fließt. In an uninterrupted load switching from the previous winding tap n to a new, preselected winding tap n + 1, the main contact of the disconnecting side is first opened, then closes the resistor contact the receiving side, so that between the two stages n and n + 1 through the switching resistors limited compensating current flows.
Nachdem der bisher geschlossene Widerstandskontakt der abschaltenden Seite geöffnet hat, schließt dann der Hauptkontakt der übernehmenden Seite, so dass der gesamte Laststrom von der neuen Wicklungsanzapfung n+1 zur Lastableitung führt; die Umschaltung ist beendet. Bei diesem bekannten Stufenschalter führt die Vakuumschaltröhre des eingeschalteten Lastzweiges den Dauerstrom im stationären Betrieb. After the previously closed resistance contact has opened the disconnecting side, then closes the main contact of the receiving side, so that the entire load current from the new winding tapping n + 1 leads to the load dissipation; the switching is completed. In this known tap changer, the vacuum interrupter of the switched load branch carries the continuous current in steady state operation.
Derartige Stufenschalter mit zwei Lastzweigen mit jeweils zwei Vakuumschaltröhren haben sich in der Praxis bewährt. Dennoch gibt es Anwendungsfälle, bei denen ein derart hoher Dauerstrom auftreten kann, dass die Führung durch eine Vakuumschaltröhre im stationären Betrieb problematisch ist. Such tap changer with two load branches, each with two vacuum interrupters have been proven in practice. Nevertheless, there are applications in which such a high continuous current can occur that the leadership is problematic by a vacuum interrupter in steady-state operation.
Es sind auch ähnliche Schaltungen mit ebenfalls vier Vakuumschaltröhren pro Phase bekannt, bei denen jedoch in jedem Lastkreis zwei Vakuumschaltröhren in Reihe geschaltet sind und zu einer dieser Vakuumschaltröhren ein Überschaltwiderstand parallel geschaltet ist. Hierbei führen die beiden in Reihe geschalteten Vakuumschaltröhren den Dauerstrom, was ebenfalls bei sehr hohen There are also similar circuits with four vacuum interrupters per phase are known in which, however, in each load circuit, two vacuum interrupters are connected in series and connected to one of these vacuum interrupters, a switching resistor in parallel. Here, the two series-connected vacuum interrupters lead the continuous current, which is also at very high
Dauerströmen Probleme bereiten kann. Continuous currents can cause problems.
Prinzipiell ist es in solchen Fällen für die verschiedensten Schaltungen bereits bekannt, parallel zu beiden Lastzweigen mechanische Dauerkontakte vorzusehen, die nach der Lastumschaltung die Führung des Dauerstroms im stationären Betrieb übernehmen und die Vakuumschaltröhren damit entlasten. Der Dauerkontakt der bisher stromführenden Seite öffnet dabei vor Beginn der eigentlichen Lastumschaltung; der Dauerkontakt der den Strom übernehmenden Seite schließt nach Abschluss der eigentlichen Lastumschaltung. Solche mechanischen Dauerkontakte erhöhen allerdings den Platzbedarf des Stufenschalters, die Komplexität der Konstruktion und verlängern zudem die Schaltsequenz, d. h. die Zahl der nacheinander zu betätigenden Kontakte bei einer Lastumschaltung. In principle, it is already known in such cases for a variety of circuits to provide parallel to two load branches mechanical permanent contacts, take over the load switching the leadership of the continuous current in steady operation and relieve the vacuum interrupters so. The permanent contact of the current-carrying side opens before the start of the actual load switching; the permanent contact of the current-receiving side closes after completion of the actual load switching. However, such mechanical permanent contacts increase the footprint of the tap changer, the complexity of the design and also extend the switching sequence, ie the number of contacts to be operated in succession in a load switching.
Dieses Problem ist nicht auf Stufenschalter mit Vakuumschaltröhren als Schaltelementen begrenzt. Gleichermaßen ergibt sich dieser Nachteil auch bei Stufenschaltern mit mechanischen Kontakten als Schaltelementen oder mit Halbleiter-Schaltern. Aufgabe der Erfindung ist es demnach, einen Stufenschalter der eingangs genannten Art anzugeben, der die Führung hoher Dauerströme auch ohne zusätzliche mechanische Dauerkontakte gestattet. This problem is not limited to tap changers with vacuum interrupters as switching elements. Similarly, this disadvantage also results in tap changers with mechanical contacts as switching elements or with semiconductor switches. The object of the invention is therefore to provide a tap changer of the type mentioned above, which allows the management of high continuous currents without additional mechanical permanent contacts.
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.
Die allgemeine erfinderische Idee besteht darin, den Dauerstrom auf alle als Hauptkontakt wirkende Schaltelemente beider Lastzweige aufzuteilen und neben dem mindestens einem Schaltelement im den Strom führenden Lastzweig auch das - ohnehin vorhandene, aber beim Stand der Technik funktionslose - mindestens eine Schaltelement im nicht den Laststrom führenden Lastzweig in die Dauerstromführung mit einzubeziehen. Damit wird die Aufgabe der Erfindung gelöst, ohne dass mehr Schaltelemente oder größer dimensionierte Schaltelemente erforderlich wären. The general inventive idea is to divide the continuous current to all acting as a main contact switching elements of both load branches and in addition to the at least one switching element in the current-carrying load branch that - anyway existing, but functionally in the prior art - at least one switching element in not the load current leading Load branch in the continuous current to include. Thus, the object of the invention is achieved without more switching elements or larger sized switching elements would be required.
Die Erfindung soll nachfolgend beispielhaft an Hand von Zeichnungen noch näher erläutert werden. Es zeigen: The invention will be explained in more detail by way of example with reference to drawings. Show it:
Figur 1 einen erfindungsgemäßen Stufenschalter, hier mit Vakuumschaltröhren als 1 shows a tap changer according to the invention, here with vacuum interrupters as
Schaltelementen, im stationären Zustand mit Beschaltung einer  Switching elements, in the stationary state with wiring a
Wicklungsanzapfung n der Stufenwicklung des Stufentransformators Figur 1a... Figur 8 verschiedene Schritte während einer Lastumschaltung auf die neue  Winding tap n of the step winding of the step transformer Figure 1a ... Figure 8 shows different steps during a load switching to the new
Wicklungsanzapfung n+1.  Winding tap n + 1.
Beim erfindungsgemäßen Stufenschalter ist ein erster Lastzweig vorgesehen, in dem sich eine als Hauptkontakt wirkende Vakuumschaltröhre MSV1 sowie parallel dazu ein Überschaltwiderstand R1 sowie eine als Widerstandskontakt wirkende Vakuumschaltröhre TTV1 befinden. Der zweite In the tap changer according to the invention, a first load branch is provided in which a vacuum interrupter MSV1 acting as the main contact and, in parallel, a reversing resistor R1 and a vacuum interrupter TTV1 acting as a resistance contact are located. The second
Lastzweig besitzt ganz analog eine Vakuumschaltröhre MSV2 sowie parallel dazu einen weiteren Überschaltwiderstand R2 und eine Vakuumschaltröhre TTV2. Bis hierhin entspricht die Schaltung dem Stand der Technik. Lastzweig owns quite analogous a vacuum interrupter MSV2 and parallel to another over-resistance R2 and a vacuum interrupter TTV2. Up to this point, the circuit corresponds to the prior art.
Erfindungsgemäß ist im ersten Lastzweig ein erster mechanischer Umschaltkontakt MTF1 vorgesehen, durch den die nicht mit der Lastableitung L verbundene Seite der Vakuumschaltröhre MSV1 wahlweise mit der bisherigen Anzapfung n der Stufenwicklung oder auch der neuen According to the invention, a first mechanical change-over contact MTF1 is provided in the first load branch, through which the side of the vacuum interrupter not connected to the load discharge line L MSV1 optionally with the previous tapping n the step winding or the new
Wicklungsanzapfung n+1 verbindbar ist. Winding tap n + 1 is connectable.
ErfindungsgemSß ist weiterhin im zweiten Lastzweig ein zweiter mechanischer Umschaltkontakt MTF2 vorgesehen, durch den die nicht mit der Lastableitung L verbundene Seite der Vakuumschaltröhre MSV2 ebenfalls wahlweise mit der bisherigen Anzapfung n der Stufenwicklung oder auch der neuen Wicklungsanzapfung n+1 verbindbar ist.  According to the invention, a second mechanical changeover contact MTF2 is furthermore provided in the second load branch, by means of which the side of the vacuum interrupter MSV2 not connected to the load lead L can also be selectively connected to the previous tap n of the tap winding or to the new winding tap n + 1.
Im in Figur 1 dargestellten Fall würde nach dem Stand der Technik der Laststrom von der In the case illustrated in FIG. 1, according to the prior art, the load current would depend on the
Wicklungsanzapfung n über die Vakuumschaltröhre MSV1 zur Lastableitung führen. Die Winding tapping n lead via the vacuum interrupter MSV1 for load dissipation. The
Vakuumschaltröhre MSV1 würde allein den Dauerstrom führen. Durch die Schaltung der Vacuum switch tube MSV1 alone would carry the continuous current. By the circuit of
erfindungsgemäß in die beiden Lastzweige eingefügten mechanischen Umschaltkontakte MTF1 und MTF2 hingegen wird der Laststrom IL , d.h. der Dauerstrom im stationären Betrieb, auf die By contrast, mechanical changeover contacts MTF1 and MTF2 inserted into the two load branches according to the invention, the load current IL, i. the steady current in stationary operation, on the
Vakuumschaltröhren MSV1 und MSV2 aufgeteilt; jede dieser beiden Vakuumschaltröhren muss also nur noch den halben Laststrom IL als Dauerstrom führen. Die Vorteile liegen auf der Hand: Vacuum switching tubes MSV1 and MSV2 split; each of these two vacuum interrupters must therefore only carry half the load current IL as a continuous current. The advantages are apparent:
Schonender Betrieb für die Vakuumschaltröhren, weniger Platzbedarf, Entfall mechanischer Gentle operation for the vacuum interrupters, less space required, mechanical abatement
Dauerkontakte. Occupancy sensors.
Nachfolgend soll an Hand der weiteren Figuren eine vollständige Umschaltsequenz des Hereinafter, on the basis of the other figures, a complete switching sequence of
erfindungsgemäßen Stufenschalters von der Wicklungsanzapfung n auf die Wicklungsanzapfung n+1 gezeigt werden. Ust bezeichnet dabei die Stufenspannung zwischen den beiden tap changer according to the invention can be shown from the winding tap n on the winding tapping n + 1. U s t denotes the step voltage between the two
Wicklungsanzapfungen. Die den Laststrom jeweils führenden Pfade sind dick dargestellt.  Winding taps. The paths leading the load current are shown thick.
Figur 1a: Die Anzapfung n ist noch stationär geschaltet, wie bereits an Hand von Figur 1a erläutert. Die Vakuumschaltröhren TTV2 und MSV2 öffnen; die Umschaltung beginnt mit diesem Schritt. FIG. 1a: The tapping n is still connected in a stationary manner, as already explained with reference to FIG. 1a. Open the vacuum interrupters TTV2 and MSV2; switching starts with this step.
Figur 2: Die Vakuumschaltröhren TTV2 und SV2 sind geöffnet, jetzt schaltet der mechanische Kontakt MTF2. Der Laststrom IL fließt jetzt ausschließlich über den linken Lastzweig. Figure 2: The vacuum interrupters TTV2 and SV2 are open, now the mechanical contact MTF2 switches. The load current IL now flows exclusively via the left load branch.
Figur 3: Die Vakuumschaltröhre MSV1 hat geöffnet, der Laststrom kommutiert auf den Figure 3: The vacuum interrupter MSV1 has opened, the load current commutes to the
Widerstandszweig, bestehend aus der Reihenschaltung der Vakuumröhre TTV1 und dem Widerstand R1. Resistance branch, consisting of the series connection of the vacuum tube TTV1 and the resistor R1.
Figur 4: Die Vakuumschaltröhre TTV2 im rechten Widerstandszweig ist jetzt geschlossen; es fließt ein Kreisstrom Ic. FIG. 4: The vacuum interrupter TTV2 in the right-hand resistance branch is now closed; a circulating current Ic flows.
Figur 5: Die Vakuumschaltröhre TTV1 ist jetzt geöffnet, der rechte Widerstandszweig, bestehend aus der Reihenschaltung der Vakuumschaltröhre TTV2 und dem Widerstand R2, übernimmt den  Figure 5: The vacuum interrupter TTV1 is now open, the right resistance branch, consisting of the series connection of the vacuum interrupter TTV2 and the resistor R2, takes over
Laststrom vollständig. Load current completely.
Figur 6: Die Vakuumschaltröhre MSV2 schließt und übernimmt die Stromführung, gleichzeitig wird der mechanische Umschaltkontakt MTF1 betätigt. Figure 6: The vacuum interrupter MSV2 closes and takes over the power supply, at the same time the mechanical changeover contact MTF1 is actuated.
Figur 7: Die Vakuumschaltröhren und MSV1 und TTV1 des linken Lastzweiges schließen. Figur 8: Der neue stationäre Endzustand ist erreicht; die Umschaltung ist beendet. Der Laststrom IL von der Wicklungsanzapfung n+1 verteilt sich über die beiden Vakuumschaltröhren MSV1 und MSV2, die jeweils den halben Laststrom 1 IL führen, hin zur Lastableitung L. Besonders vorteilhaft sind die mechanischen Kontakte (MTF1 , MTF2) identisch aufgebaut und/oder zu einer einzigen Baugruppe zusammengefasst. Figure 7: Close the vacuum interrupters and MSV1 and TTV1 of the left load branch. FIG. 8: The new stationary end state has been reached; the switching is completed. N, the load current IL from the winding tap + 1 is distributed over the two vacuum switching tubes MSV1 and MSV2, each carrying half the load current 1 IL, towards the load shunt L. Particularly advantageously, the mechanical contacts (MTF1, MTF2) are of identical construction and / or a single assembly summarized.
Die Erfindung ist nicht auf die Benutzung von Vakuumschaltröhren als Schaltelemente beschränkt. Im Rahmen der Erfindung sind auch Stufenschalter mit mechanischen Kontakten oder The invention is not limited to the use of vacuum interrupters as switching elements. Within the scope of the invention are also tap changers with mechanical contacts or
Halbleiterschaltern als Schaltelementen möglich; die Vorteile der Erfindung gelten für derartige Stufenschalter ebenso. Semiconductor switches as switching elements possible; the advantages of the invention apply to such tap changers as well.

Claims

Patentansprüche claims
1. Stufenschalter zur unterbrechungslosen Umschaltung zwischen zwei Wicklungsanzapfungen (n, n+1 ) eines Stufentransformators, 1. Step switch for uninterrupted switching between two winding taps (n, n + 1) of a tapped transformer,
wobei zwei Lastzweige vorgesehen sind, derart, dass der eine Lastzweig mit der ersten wherein two load branches are provided, such that the one load branch with the first
Wicklungsanzapfung (n) und der andere Lastzweig mit der zweiten Wicklungsanzapfung (n+1) elektrisch verbunden ist, Winding tap (n) and the other load branch is electrically connected to the second winding tap (n + 1),
wobei der erste Lastzweig mindestens ein als Hauptkontakt wirkendes erstes Schaltelement (MSV1) aufweist, wherein the first load branch has at least one first switching element (MSV1) acting as a main contact,
wobei der zweite Lastzweig mindestens ein als Hauptkontakt wirkendes zweites Schaltelement (MSV2) aufweist wherein the second load branch has at least one second switching element (MSV2) acting as main contact
und wobei erster und zweiter Lastzweig mit einer gemeinsamen Lastableitung (L) verbunden sind, dadurch gekennzeichnet, and wherein first and second load branches are connected to a common load lead (L), characterized
dass im ersten Lastzweig zusätzlich ein erster mechanischer Umschaltkontakt (MTF1) vorgesehen ist, durch den die nicht mit der Lastableitung (L) verbundene Seite des mindestens einen ersten als Hauptkontakt wirkenden Schaltelementes (MSV1 ) wahlweise mit der ersten Wicklungsanzapfung (n) oder der zweiten Wicklungsanzapfung (n+1) verbindbar ist, in that a first mechanical changeover contact (MTF1) is additionally provided in the first load branch, through which the side of the at least one first main contact switching element (MSV1) not connected to the load lead (L) is selectively connected to the first winding tap (n) or the second winding tap (n + 1) is connectable,
und dass im zweiten Lastzweig zusätzlich ein zweiter mechanischer Umschaltkontakt (MTF2) vorgesehen ist, durch den die nicht mit der Lastableitung (L) verbundene Seite des mindestens einen zweiten als Hauptkontakt wirkenden Schaltelementes (MSV2) ebenfalls wahlweise mit der ersten Wicklungsanzapfung (n) oder der zweiten Wicklungsanzapfung (n+1) verbindbar ist. and that in the second load branch in addition a second mechanical changeover contact (MTF2) is provided, through which the not connected to the load derivative (L) side of the at least one second acting as a main contact switching element (MSV2) also selectively with the first winding tap (n) or the second winding tapping (n + 1) is connectable.
2. Stufenschalter nach Anspruch 1 , 2. tap changer according to claim 1,
dadurch gekennzeichnet, characterized,
dass die mechanischen Kontakte (MTF1 , MTF2) identisch aufgebaut sind. that the mechanical contacts (MTF1, MTF2) are identical.
3. Stufenschalter nach Anspruch 1 oder 2, 3. tap changer according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass die mechanischen Kontakte (MTF1 , MTF2) zu einer Baugruppe vereinigt sind. that the mechanical contacts (MTF1, MTF2) are combined to form an assembly.
4. Stufenschalter nach Anspruch 1 oder 2 oder 3, 4. tap changer according to claim 1 or 2 or 3,
dadurch gekennzeichnet, characterized,
dass als Schaltelemente (MSV1 , MSV2) Vakuumschaltröhren verwendet sind. that are used as switching elements (MSV1, MSV2) vacuum interrupters.
5. Stufenschalter nach Anspruch 1 oder 2 oder 3, 5. tap changer according to claim 1 or 2 or 3,
dadurch gekennzeichnet, characterized,
dass als Schaltelemente (MSV1 , MSV2) mechanische Kontakte verwendet sind. that mechanical contacts are used as switching elements (MSV1, MSV2).
6. Stufenschalter nach Anspruch 1 oder 2 oder 3, 6. tap changer according to claim 1 or 2 or 3,
dadurch gekennzeichnet, characterized,
dass als Schaltelemente (MSV1 , MSV2) elektrische Halbleiterschalter, beispielsweise Thyristoren oder IGBT's, verwendet sind. that are used as switching elements (MSV1, MSV2) semiconductor electrical switches, such as thyristors or IGBT's.
EP11776703.8A 2010-11-09 2011-10-22 Tap changer Not-in-force EP2638553B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010050882A DE102010050882A1 (en) 2010-11-09 2010-11-09 step switch
PCT/EP2011/005337 WO2012062408A1 (en) 2010-11-09 2011-10-22 On-load tap changer

Publications (2)

Publication Number Publication Date
EP2638553A1 true EP2638553A1 (en) 2013-09-18
EP2638553B1 EP2638553B1 (en) 2015-09-30

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EP11776703.8A Not-in-force EP2638553B1 (en) 2010-11-09 2011-10-22 Tap changer

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EP (1) EP2638553B1 (en)
CN (1) CN103189948B (en)
DE (1) DE102010050882A1 (en)
HK (1) HK1186290A1 (en)
WO (1) WO2012062408A1 (en)

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FR3004284B1 (en) 2013-04-08 2015-04-03 Schneider Electric Ind Sas TRANSFORMER WITH MEANS FOR ADJUSTING THE LOAD TRANSFORMATION RATIO
DE102015106178A1 (en) * 2015-04-22 2016-10-27 Maschinenfabrik Reinhausen Gmbh OLTC
WO2022001362A1 (en) * 2020-06-29 2022-01-06 南方电网科学研究院有限责任公司 Passive triggered-power electronic tap-changer device and contact device
CN111899999B (en) * 2020-06-29 2021-09-03 南方电网科学研究院有限责任公司 Power electronic tap changer and distribution transformer
CN112670066B (en) * 2020-11-18 2023-03-21 中国电力科学研究院有限公司 Transition circuit device and method for alternately bearing symmetrical vacuum bubbles
CN116721848B (en) * 2023-06-05 2024-04-02 中国南方电网有限责任公司超高压输电公司广州局 On-load tap changer and control method thereof

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HK1186290A1 (en) 2014-03-07
DE102010050882A1 (en) 2012-05-10
CN103189948B (en) 2016-10-12
WO2012062408A1 (en) 2012-05-18
CN103189948A (en) 2013-07-03
EP2638553B1 (en) 2015-09-30

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