EP2815411A1 - Transformer with on-load tap-changing device - Google Patents

Transformer with on-load tap-changing device

Info

Publication number
EP2815411A1
EP2815411A1 EP13700690.4A EP13700690A EP2815411A1 EP 2815411 A1 EP2815411 A1 EP 2815411A1 EP 13700690 A EP13700690 A EP 13700690A EP 2815411 A1 EP2815411 A1 EP 2815411A1
Authority
EP
European Patent Office
Prior art keywords
winding
series
semiconductor switching
branch
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.)
Granted
Application number
EP13700690.4A
Other languages
German (de)
French (fr)
Other versions
EP2815411B1 (en
Inventor
Jochen Von Bloh
Volker Karrer
Dieter Dohnal
Karsten Viereck
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
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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 EP2815411A1 publication Critical patent/EP2815411A1/en
Application granted granted Critical
Publication of EP2815411B1 publication Critical patent/EP2815411B1/en
Revoked legal-status Critical Current
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • 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
    • 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
    • H01H9/0016—Contact arrangements for tap changers

Definitions

  • the invention relates to a transformer with tap changer for
  • Winding taps of a tapped transformer have been known in the art for many years.
  • the corresponding step transformers which are to be controlled, have a stepped control winding on the primary side or on the secondary side.
  • the winding on the regulating side of the transformer as a whole consists of a fixed part, the main winding, and the actual control winding, which has a plurality of winding taps. This is explained in detail in the publication "Axel Kramer: On-Load Tap-Changers for Power Transformers", published in 2000.
  • Control winding has.
  • Lightning voltage exposure during testing of the transformer and transients in the network eg when switching SF 6 - / vacuum circuit breakers) exposed.
  • the object of the invention is to provide a transformer with a tap changer, in which the electrical load in the tap changer
  • Subclaims relate to advantageous developments of the invention.
  • the invention is based on the general idea of dividing the common prior art winding on the side of the transformer to be controlled into two equal winding parts and providing the control winding between these winding parts and, in turn, the corresponding step switching device.
  • the semiconductor switching elements can no longer be loaded with the full amplitude of the lightning voltage wave, since the respective impedance is connected upstream of half the main winding. Since the quasi-upstream part of the main winding also absorbs part of the energy of the lightning voltage wave, the protective circuit of the switching elements can also be made smaller, resulting in cost and space savings. Furthermore, it is also possible to use semiconductor switching elements with a smaller blocking / blocking voltage, since these are to be dimensioned primarily after the lightning voltage load and not according to the standing AC voltage.
  • the semiconductor switching elements are not burdened in this case with the full amplitude and Fiankensteilheit, since the individual winding parts act as an upstream throttle damping.
  • the winding design for the split main winding is designed symmetrically; As a result, the force effect is minimized in the event of a short circuit.
  • FIG. 1 shows a first embodiment of a transformer according to the invention
  • Fig. 2 shows another embodiment of the invention
  • Fig. 3 is a table according to the gem. Figure 2 can be achieved
  • Fig. 4 shows a third embodiment of the invention
  • Figure 1 shows in a first embodiment of the invention, a transformer whose primary and secondary sides by a schematically indicated dashed line
  • the primary page is shown to be regulated at the. Erfindungsge, ..- .. »a split trunk winding provided, which consists of two identical trunk winding parts 1, 2. In between is one
  • Stepping device 3 arranged, which is symbolized by a dashed line.
  • Step switching device 3 has here, as the simplest case, a control winding 4, which is surrounded by switching elements S in the form of a bridge.
  • switching elements S for example, antiparallel thyristor pairs, IGBTs o.ä. Semiconductor switching elements, can be used.
  • the control winding 4 is switched on or off. Shown here is still a switch 5, a so-called black start switch, which ensures that the transformer can continue to operate even in case of failure of the controller or the failure of semiconductor switching elements.
  • Fig. 2 shows a further developed embodiment of the invention.
  • the tap changer device 3 consists of several parts of a control winding W1, W1, W3.
  • the tap changer 3 here consists of three individual modules M1, M2, M3.
  • the first module M1 comprises the first partial winding W1 and on both sides thereof two bridging paths which each comprise a series connection of two semiconductor switching elements S1 .1 and S1 .2 or S1.3 or S1 .4. In each case between the two series-connected switching elements a center tap M1.1 or M1.2 is provided.
  • the individual semiconductor switching elements are shown here as well as in the following figures only schematically as a simple switch. They include in practice parallel thyristor pairs, IGBTs or other semiconductor switching elements. They may also each comprise a series or parallel connection of a plurality of such individual semiconductor switch elements.
  • the one center tap M1 .2 is electrically connected to the trunk winding part 2.
  • the other center tap M1.1 is connected to a center tap M2.1 of a second module M2.
  • This second module M2 is constructed identically; it likewise comprises a partial winding W2 and the two series circuits each comprising two semiconductor switching elements S2.1 and S2.2 or S2.3 and S2.4.
  • center tap M2.1 and M2.2 are provided between the respective series circuits again.
  • the wiring of a center tap M2.1 with the first module M1 has already been explained; the second center tap M2.2 in turn is connected to a center tap M3.2 of a third module M3.
  • This third module M3 is again constructed identically. It again includes one
  • the not yet mentioned center tap M3.1 of the third and here last module M3 is electrically connected to the main winding part 1.
  • the partial winding W2 in the second module M2 here has the triple number of turns of the partial winding W1 in the first module M1.
  • the partial winding W3 in the third module M3 here has six times the number of turns of the partial winding W1 in the first module M1.
  • FIG. 3 shows a wiring table of the step switching device according to the invention shown in FIG.
  • the symbol “0” means that the corresponding partial winding is not switched on, that is to say bridged
  • the symbol “+” means that the corresponding partial winding to the high-voltage winding 2 is connected in the same way.
  • the symbol “-” finally means that the corresponding part winding is connected in opposite directions to the high-voltage winding 2.
  • FIG. 4 shows a further embodiment of the invention.
  • the devisnschait driving 3 shown here is arranged. It has two series connected
  • the first switching assembly A in turn has a
  • two semiconductor switching units S1, S2 are provided in series with one another.
  • two further semiconductor switching units S3, S4 are connected in series with each other intended.
  • a first part winding W1 of the control winding is arranged between the two series-connected semiconductor switching units S1, S2 in the first branch 9 and the two series-connected semiconductor switching units S3, S4 in the second branch 10.
  • the second switch assembly B has a parallel circuit of three branches 1 1, 12 and 13.
  • In the third branch 1 1 are connected in series to each other two semiconductor-shaft units S5, S6, in the fourth branch 12 are connected in series to each other two semiconductor switching units S7, S8 and in the fifth branch 13 in series with each other two semiconductor switching units S9, S10 provided.
  • the second switch assembly B is electrically connected to the parent winding part 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Power Conversion In General (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Ac-Ac Conversion (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

The invention relates to a transformer with an on-load tap-changing device, wherein optionally the primary or secondary side can be regulated by means of the on-load tap-changing device, and wherein, on the side of the transformer to be regulated, a main winding and at least one tapped winding, which is connectable by the on-load tap-changing device, are provided. According to the invention, the main winding is divided into two main winding elements, and the at least one tapped winding and the on-load tap-changing device (3) connecting said tapped winding are arranged electrically between the two main winding elements (1, 2).

Description

Transformator mit Stufenschalteinrichtung  Transformer with tap changer
Die Erfindung betrifft einen Transformator mit Stufenschalteinrichtung zur The invention relates to a transformer with tap changer for
unterbrechungslosen Umschaltung zwischen Teilen einer Regelwicklung des uninterruptible switching between parts of a control winding of the
Transformators. Transformer.
Stufenschalteinrichtungen zur unterbrechungslosen Umschaltung zwischen Step switching devices for uninterrupted switching between
Wicklungsanzapfungen eines Stufentransformators sind seit vielen Jahren bekannter Stand der Technik. Die entsprechenden Stufentransformatoren, an denen geregelt werden soll, weisen primär- oder auch sekundärseitig eine gestufte Regelwicklung auf. Die Wicklung auf der zur regelnden Seite des Transformators besteht insgesamt aus einem festen Teil, der Stammwicklung, und der eigentlichen Regelwicklung, die mehrere Wicklungsanzapfungen besitzt. Dies ist beispielweise ausführlich erläutert in der Publikation„Axel Krämer: On-Load Tap-Changers for Power Transformers", veröffentlicht 2000. Winding taps of a tapped transformer have been known in the art for many years. The corresponding step transformers, which are to be controlled, have a stepped control winding on the primary side or on the secondary side. The winding on the regulating side of the transformer as a whole consists of a fixed part, the main winding, and the actual control winding, which has a plurality of winding taps. This is explained in detail in the publication "Axel Kramer: On-Load Tap-Changers for Power Transformers", published in 2000.
Es ist also etablierter Stand der Technik, dass der zu regelnde Stufentransformator auf seiner zu regelnden Seite eine Stammwicklung und in Reihe dazu eine gestufte It is well established state of the art, that to be controlled stage transformer on its side to be controlled a trunk winding and in series to a stepped
Regelwicklung aufweist. Control winding has.
Nach dem frühere Stufeneinrichtungen mechanische Schaltelemente zur Umschaltung zwischen den einzelne Wicklungsanzapfungen der Regelwicklung aufwiesen, haben sich seit einer Reihe von Jahren Vakuumschaltelemente etabliert. In jüngster Zeit schließlich sind auch Halbleiter-Schaltelemente zur unterbrechungslosen Umschaltung zwischen derartigen Wicklungsanzapfungen vorgeschlagen worden. Solche Halbleiter-Schaltelemente besitzen zahlreiche Vorteile; ein Umschalten ist ohne mechanische Bauteile möglich, sie sind jedoch relativ empfindlich gegenüber Überspannungen. Beim Stand der Technik sind solche Halbleiter-Schaltelemente stets einer hohen Belastung bei einer After the earlier stage devices had mechanical switching elements for switching between the individual winding taps of the control winding, vacuum switching elements have been established for a number of years. Recently, semiconductor switching elements have also been proposed for uninterrupted switching between such winding taps. Such semiconductor switching elements have numerous advantages; Switching is possible without mechanical components, but they are relatively sensitive to overvoltages. In the prior art, such semiconductor switching elements are always a high load at a
Blitzspannungsbeanspruchung bei der Prüfung des Transformators sowie bei Transienten im Netz (z.B. beim Schalten von SF6-/Vakuumleistungsschaltern) ausgesetzt. Lightning voltage exposure during testing of the transformer and transients in the network (eg when switching SF 6 - / vacuum circuit breakers) exposed.
Aufgabe der Erfindung ist es, einen Transformator mit einer Stufenschalteinrichtung anzugeben, bei dem die elektrische Belastung der in der Stufenschalteinrichtung The object of the invention is to provide a transformer with a tap changer, in which the electrical load in the tap changer
verwendeten Halbleiter-Schaltelemente minimiert wird. used semiconductor switching elements is minimized.
Diese Aufgabe wird durch die Erfindung gemäß Patentanspruch 1 gelöst. Die This object is achieved by the invention according to claim 1. The
Unteransprüche betreffen vorteilhafte Weiterbildungen der Erfindung. Die Erfindung liegt die allgemeine Idee zugrunde, die nach dem Stand der Technik einheitliche Stammwicklung auf der zu regelnden Seite des Transformators in zwei gleiche Wicklungsteile aufzuteilen und zwischen diesen Wicklungsteilen die Regelwicklung und an dieser wiederum die entsprechende Stufenschalteinrichtung vorzusehen. Subclaims relate to advantageous developments of the invention. The invention is based on the general idea of dividing the common prior art winding on the side of the transformer to be controlled into two equal winding parts and providing the control winding between these winding parts and, in turn, the corresponding step switching device.
Diese Erfindung bietet gegenüber dem Stand der Technik zahlreiche Vorteile. Zunächst einmal können die Halbleiter-Schaltelemente nicht mehr mit der vollen Amplitude der Blitzspannungswelle belastet werden, da die jeweilige Impedanz der halben Stammwicklung vorgeschaltet ist. Da der quasi vorgeschaltete Teil der Stammwicklung auch einen Teil der Energie der Blitzspannungswelle aufnimmt, kann die Schutzbeschaltung der Schaltelemente auch kleiner dimensioniert werden, was zu Kosten- und Platzeinsparung führt. Weiterhin können auch Halbleiter-Schaltelemente mit kleinerer Blockier-/Sperrspannung eingesetzt werden, da diese in erster Linie nach der Blitzspannungsbelastung zu dimensionieren sind und nicht nach der Stehwechselspannung. This invention offers many advantages over the prior art. First of all, the semiconductor switching elements can no longer be loaded with the full amplitude of the lightning voltage wave, since the respective impedance is connected upstream of half the main winding. Since the quasi-upstream part of the main winding also absorbs part of the energy of the lightning voltage wave, the protective circuit of the switching elements can also be made smaller, resulting in cost and space savings. Furthermore, it is also possible to use semiconductor switching elements with a smaller blocking / blocking voltage, since these are to be dimensioned primarily after the lightning voltage load and not according to the standing AC voltage.
Da der vorgeschaltete Teil der geteilten Stammwicklung erfindungsgemäß wie eine Drossel für schnelle Transienten auf der Netzleitung wirkt, werden die Halbleiter-Schaltelemente auch in diesem Fall nicht mit der vollen Amplitude und Fiankensteilheit belastet, da die einzelnen Wicklungsteile wie eine vorgeschaltete Drossel dämpfend wirken. Since the upstream part of the split main winding acts like a choke for fast transients on the power line according to the invention, the semiconductor switching elements are not burdened in this case with the full amplitude and Fiankensteilheit, since the individual winding parts act as an upstream throttle damping.
Besonders vorteilhaft ist das Wicklungsdesign für die geteilte Stammwicklung symmetrisch ausgelegt; dadurch wird die Kraftwirkung im Kurzschlussfall minimiert.  Particularly advantageously, the winding design for the split main winding is designed symmetrically; As a result, the force effect is minimized in the event of a short circuit.
Die Fertigung der beiden Teile der erfindungsgemäß geteilten Stammwicklung kann vorteilhaft auf einzelne Lagen aufgeteilt werden.  The production of the two parts of the invention shared parent winding can be advantageously divided into individual layers.
Die Erfindung soll nachfolgend an Hand von Zeichnungen noch näher erläutert werden. Es zeigen: eine erste Ausführungsform eines erfindungsgemäße Transformators mitThe invention will be explained in more detail below with reference to drawings. 1 shows a first embodiment of a transformer according to the invention
Stufenschalteinrichtung Tap-changing equipment
Fig. 2 eine weitere Ausführungsform der Erfindung  Fig. 2 shows another embodiment of the invention
Fig. 3 einen Tabelle der bei der Ausführung gem. Figur 2 erzielbaren Fig. 3 is a table according to the gem. Figure 2 can be achieved
Spannungsstufen  voltage levels
Fig. 4 eine dritte Ausführungsform der Erfindung  Fig. 4 shows a third embodiment of the invention
Figur 1 zeigt in einer ersten Ausführungsform der Erfindung einen Transformator, dessen Primär- und Sekundärseite durch eine schematisch angedeutete Strichpunktlinie Figure 1 shows in a first embodiment of the invention, a transformer whose primary and secondary sides by a schematically indicated dashed line
voneinander getrennt sind. Auf der linken Seite der Darstellung ist die Primärseite gezeigt, an der geregelt werden soll. Erfindungsge, ..-..» eine geteilte Stammwicklung vorgesehen, die aus zwei identischen Stammwicklungsteilen 1 , 2 besteht. Dazwischen ist eine are separated from each other. On the left side of the illustration, the primary page is shown to be regulated at the. Erfindungsge, ..- .. »a split trunk winding provided, which consists of two identical trunk winding parts 1, 2. In between is one
Stufenschalteinrichtung 3 angeordnet, die durch eine Strichlinie symbolisiert ist. Die Stepping device 3 arranged, which is symbolized by a dashed line. The
Stufenschalteinrichtung 3 weist hier, als den einfachsten Fall, eine Regelwicklung 4 auf, die von Schaltelementen S in Form einer Brücke umgeben ist. Als Schaltelemente S sind beispielsweise antiparallele Thyristorpaare, IGBTs o.ä. Halbleiter-Schaltelemente, einsetzbar. Bei diesem einfachsten Fall der Erfindung ist die Regelwicklung 4 zu- oder abschaltbar. Gezeigt ist hier noch ein Schalter 5, ein sogenannter Black-Start-Schalter, der sicherstellt, dass der Transformator auch bei Ausfall des Reglers bzw. des Ausfalls von Halbleiter-Schaltelementen weiter betrieben werden kann. Step switching device 3 has here, as the simplest case, a control winding 4, which is surrounded by switching elements S in the form of a bridge. As switching elements S, for example, antiparallel thyristor pairs, IGBTs o.ä. Semiconductor switching elements, can be used. In this simplest case of the invention, the control winding 4 is switched on or off. Shown here is still a switch 5, a so-called black start switch, which ensures that the transformer can continue to operate even in case of failure of the controller or the failure of semiconductor switching elements.
Auf der rechten Seite ist die Sekundärwicklung 6 angedeutet. Mit 7 und 8 sind Anfang und Ende des gesamten Wicklungsaufbaus auf der Primärseite bezeichnet.  On the right side of the secondary winding 6 is indicated. Denoted at 7 and 8 are the beginning and the end of the entire winding structure on the primary side.
Fig. 2 zeigt eine weiterentwickelte Ausführungsform der Erfindung. Hierbei besteht die Stufenschaltereinrichtung 3 aus mehreren Teilen einer Regelwicklung W1 , W1 , W3. Fig. 2 shows a further developed embodiment of the invention. Here, the tap changer device 3 consists of several parts of a control winding W1, W1, W3.
Die Stufenschalteinrichtung 3 besteht hier aus drei einzelnen Modulen M1 , M2, M3. The tap changer 3 here consists of three individual modules M1, M2, M3.
Das erste Modul M1 umfasst die erste Teilwicklung W1 sowie beidseitig davon zwei Überbrückungspfade, die jeweils eine Reihenschaltung aus zwei Halbleiter-Schaltelementen S1 .1 und S1 .2 bzw. S1.3 bzw. S1 .4 umfassen. Jeweils zwischen den beiden in Reihe geschalteten Schaltelementen ist eine Mittenanzapfung M1.1 bzw. M1.2 vorgesehen. The first module M1 comprises the first partial winding W1 and on both sides thereof two bridging paths which each comprise a series connection of two semiconductor switching elements S1 .1 and S1 .2 or S1.3 or S1 .4. In each case between the two series-connected switching elements a center tap M1.1 or M1.2 is provided.
Die einzelnen Halbleiter-Schaltelemente sind hier wie auch in den nachfolgenden Figuren nur schematisch als einfache Schalter dargestellt. Sie umfassen in der Praxis parallel geschaltete Thyristorpaare, IGBT's oder andere Halbleiter-Schaltelemente. Sie können auch jeweils eine Reihen- oder Parallelschaltung mehrerer solcher einzelner Halbleiter- Schalterelemente umfassen.  The individual semiconductor switching elements are shown here as well as in the following figures only schematically as a simple switch. They include in practice parallel thyristor pairs, IGBTs or other semiconductor switching elements. They may also each comprise a series or parallel connection of a plurality of such individual semiconductor switch elements.
Die eine Mittenanzapfung M1 .2 ist mit dem Stammwicklungsteil 2 elektrisch verbunden. Die andere Mittenanzapfung M1.1 steht mit einer Mittenanzapfung M2.1 eines zweiten Moduls M2 in Verbindung. Dieses zweite Modul M2 ist identisch aufgebaut; es umfasst ebenfalls eine Teilwicklung W2 sowie die beiden Reihenschaltungen aus jeweils zwei Halbleiter- Schaltelementen S2.1 und S2.2 bzw. S2.3 und S2.4. Ebenfalls sind zwischen den jeweiligen Reihenschaltungen wieder Mittenanzapfung M2.1 und M2.2 vorgesehen. Die Beschaltung der einen Mittenanzapfung M2.1 mit dem ersten Modul M1 wurde bereits erläutert; die zweite Mittenanzapfung M2.2 ihrerseits ist mit einer Mittenanzapfung M3.2 eines dritten Moduls M3 verbunden.  The one center tap M1 .2 is electrically connected to the trunk winding part 2. The other center tap M1.1 is connected to a center tap M2.1 of a second module M2. This second module M2 is constructed identically; it likewise comprises a partial winding W2 and the two series circuits each comprising two semiconductor switching elements S2.1 and S2.2 or S2.3 and S2.4. Also center tap M2.1 and M2.2 are provided between the respective series circuits again. The wiring of a center tap M2.1 with the first module M1 has already been explained; the second center tap M2.2 in turn is connected to a center tap M3.2 of a third module M3.
Dieses dritte Modul M3 ist wiederum identisch aufgebaut. Es umfasst wiederum eineThis third module M3 is again constructed identically. It again includes one
Teilwicklung W3 sowie die beiden Reihenschaltungen aus Halbleiter-Schaltelementen S3.1 und S3.2 bzw. S3.3 und S3.4 sowie die dazwischen liegenden Mittenanzapfungen M3.1 und M3.2. Die bisher noch nicht erwähnte Mittenanzapfung M3.1 des dritten und hier letzten Moduls M3 ist mit dem Stammwicklungsteil 1 elektrisch verbunden. Partial winding W3 and the two series circuits of semiconductor switching elements S3.1 and S3.2 or S3.3 and S3.4 and the intermediate center taps M3.1 and M3.2. The not yet mentioned center tap M3.1 of the third and here last module M3 is electrically connected to the main winding part 1.
Die beschriebenen hier drei Module M1 ... M3 unterscheiden sich nur durch die The described here three modules M1 ... M3 differ only by the
Bemessungen der jeweiligen Teilwicklungen W1 ...W3. Dimensioning of the respective partial windings W1 ... W3.
Die Teilwicklung W2 im zweiten Modul M2 weist hier die dreifache Windungszahl der Teilwicklung W1 im ersten Modul M1 auf. Die Teilwicklung W3 im dritten Modul M3 weist hier die sechsfache Windungszahl der Teilwicklung W1 im ersten Modul M1 auf.  The partial winding W2 in the second module M2 here has the triple number of turns of the partial winding W1 in the first module M1. The partial winding W3 in the third module M3 here has six times the number of turns of the partial winding W1 in the first module M1.
Figur 3 zeigt eine Beschaltungstabelle der in Figur 2 dargestellten erfindungsgemäßen Stufenschalteinrichtung. Das Symbol„0" bedeutet, dass die entsprechende Teilwicklung nicht eingeschaltet, d. h. überbrückt ist. Das Symbol„+" bedeutet, dass die entsprechende Teilwicklung zur Oberspannungswicklung 2 im gleichen Sinn dazu geschaltet ist. Das Symbol„-„ schließlich bedeutet, dass die entsprechende Teilwicklung gegensinnig zur Oberspannungswicklung 2 geschaltet ist. FIG. 3 shows a wiring table of the step switching device according to the invention shown in FIG. The symbol "0" means that the corresponding partial winding is not switched on, that is to say bridged, The symbol "+" means that the corresponding partial winding to the high-voltage winding 2 is connected in the same way. The symbol "-" finally means that the corresponding part winding is connected in opposite directions to the high-voltage winding 2.
In der Beschaltungstabelle sind die zehn Spannungsstufen dargestellt, die sich ergeben, wenn man zur Stufenspannung der Oberspannungswicklung 2 weitere Teilspannungen hinzufügt. Diese Teilspannungen ergeben sich durch die unterschiedliche Zuschaltung, Gegenschaltung oder Überbrückung der einzelnen Wicklungsteile W1 ...W3. Es ist zu sehen, dass sich bestimmte Spannungsstufen redundant, d. h. durch unterschiedliche  In the wiring table, the ten voltage levels are shown, which arise when you add to the step voltage of the high-voltage winding 2 more partial voltages. These partial voltages result from the different connection, counter circuit or bridging of the individual winding parts W1 ... W3. It can be seen that certain voltage levels are redundant, i. H. through different
Schaltzustände, erzeugen lassen. Switching states, let generate.
Ebenso, in der Tabelle aber nicht dargestellt, ist es möglich, in der anderen Richtung entsprechende gestufte Teilspannungen von der Spannung in der Oberspannungswicklung 2 abzuziehen. Insgesamt ergeben sich bei dieser Ausführungsform mithin einundzwanzig mögliche Spannungsstufen. In der Mittelstellung, hier mit N bezeichnet, ist die  Likewise, but not shown in the table, it is possible to subtract corresponding stepped partial voltages from the voltage in the high-voltage winding 2 in the other direction. Overall, in this embodiment, there are therefore twenty-one possible voltage levels. In the middle position, here denoted by N, is the
Stufenschaiteinrichtung. Stammwicklungsteil 1 und 2 sind dann direkt miteinander verbunden. Stufenschaiteinrichtung. Stock winding part 1 and 2 are then directly connected.
Das erläuterte Zu- bzw. Gegenschalten oder die Überbrückung der einzelnen Wicklungsteile W1 ...W3 erfolgt durch eine entsprechende Beschaltung der Halbleiter-Schaltelemente S1.1 ... S3.4.  The explained to- or counter-switching or the bridging of the individual winding parts W1... W3 is effected by a corresponding connection of the semiconductor switching elements S1.1... S3.4.
Figur 4 zeigt eine weitere Ausführungsform der Erfindung. FIG. 4 shows a further embodiment of the invention.
Zwischen dem StammwicklungsteiH und dem Stammwicklungsteil 2 ist die hier gezeigte Stufenschaiteinrichtung 3 angeordnet. Sie besitzt zwei in Reihe geschaltete  Between the StammwicklungsteiH and the trunk winding part 2, the Stufenschaiteinrichtung 3 shown here is arranged. It has two series connected
Schaltbaugruppen A und B. Die erste Schaltbaugruppe A ihrerseits besitzt eine Switching assemblies A and B. The first switching assembly A in turn has a
Parallelschaltung von zwei Zweigen 9 und 10. Im ersten Zweig 9 sind in Reihenschaltung zueinander zwei Halbleiter-Schalteinheiten S1 , S2 vorgesehen. Im parallelen zweiten Zweig 10 sind in Reihenschaltung zueinander zwei weitere Halbleiter-Schalteinheiten S3, S4 vorgesehen. Zwischen den beiden in Reihe geschalteten Halbleiter-Schalteinheiten S1 , S2 im ersten Zweig 9 und den beiden in Reihe geschalteten Halbleiter-Schalteinheiten S3, S4 im zweiten Zweig 10 ist eine erste Teilwicklung W1 der Regelwicklung angeordnet. Parallel connection of two branches 9 and 10. In the first branch 9, two semiconductor switching units S1, S2 are provided in series with one another. In the parallel second branch 10, two further semiconductor switching units S3, S4 are connected in series with each other intended. Between the two series-connected semiconductor switching units S1, S2 in the first branch 9 and the two series-connected semiconductor switching units S3, S4 in the second branch 10, a first part winding W1 of the control winding is arranged.
Die zweite Schaltbaugruppe B besitzt eine Parallelschaltung von drei Zweigen 1 1 , 12 und 13. Im dritten Zweig 1 1 sind in Reihenschaltung zueinander zwei Halbleiter-Schafteinheiten S5, S6 , im vierten Zweig 12 sind in Reihenschaltung zueinander zwei Halbleiter-Schalteinheiten S7, S8 und im fünften Zweig 13 in Reihenschaltung zueinander zwei Halbleiter- Schalteinheiten S9, S10 vorgesehen. Zwischen den beiden in Reihe geschalteten Halbleiter- Schalteinheiten S5, S6 im dritten Zweig 1 1 und den beiden in Reihe geschalteten Halbleiter- Schalteinheiten S7, S8 im vierten Zweig 12 ist eine zweite Teilwicklung W2 der The second switch assembly B has a parallel circuit of three branches 1 1, 12 and 13. In the third branch 1 1 are connected in series to each other two semiconductor-shaft units S5, S6, in the fourth branch 12 are connected in series to each other two semiconductor switching units S7, S8 and in the fifth branch 13 in series with each other two semiconductor switching units S9, S10 provided. Between the two series-connected semiconductor switching units S5, S6 in the third branch 1 1 and the two series-connected semiconductor switching units S7, S8 in the fourth branch 12 is a second partial winding W2 of
Regelwicklung und zwischen den beiden in Reihe geschalteten Halbleiter-Schalteinheiten S7, S8 im vierten Zweig 12 und den beiden in Reihe geschalteten Halbleiter-Schalteinheiten S9, S10 im fünften Zweig 13 ist eine dritte Teilwicklung W3 angeordnet. Bei dieser Control winding and between the two series-connected semiconductor switching units S7, S8 in the fourth branch 12 and the two series-connected semiconductor switching units S9, S10 in the fifth branch 13, a third partial winding W3 is arranged. At this
Ausführungsform ist die zweite Schaltbaugruppe B mit dem Stammwicklungsteil 2 elektrisch verbunden. Embodiment, the second switch assembly B is electrically connected to the parent winding part 2.
Im Rahmen der Erfindung sind unterschiedlichste Ausführungen der Stufenschalteinrichtung 3 mit der unterschiedlichsten Zahl von zu regelnden Teilwicklungen und verschiedensten Beschaltungen mittels Halbleiter-Schaltelementen möglich. Wichtig ist bei allen diesen Ausführungsformen allein, dass die entsprechende Schalteinrichtung 3 zwischen den beiden Stammwickiungsteilen 1 , 2 der erfindungsgemäß geteilten Stammwicklung auf der Seite des Transformators, an der geregelt werden soll, vorgesehen ist. In the context of the invention, a wide variety of embodiments of the tap changer 3 with the most varied number of part windings to be controlled and various circuits by means of semiconductor switching elements are possible. It is important in all these embodiments alone that the corresponding switching device 3 between the two Stammwickiungsteilen 1, 2 of the present invention shared parent winding on the side of the transformer is to be controlled at the provided.

Claims

Patentansprüche claims
1. Transformator mit Stufenschalteinrichtung, 1. transformer with tap changer,
wobei der Transformator eine Primär- und eine Sekundärseite aufweist,  wherein the transformer has a primary and a secondary side,
wobei wahlweise Primär- oder Sekundärseite mittels der Stufenschalteinrichtung regelbar ist  wherein optionally primary or secondary side can be controlled by means of the tap changer
und wobei an der zu regelnden Seite des Transformators eine Stammwicklung und mindestens eine Regelwicklung, die von der Stufenschalteinrichtung beschaltbar ist, vorgesehen sind,  and wherein a main winding and at least one control winding, which can be connected by the step-switching device, are provided on the side of the transformer to be regulated,
dadurch gekennzeichnet,  characterized,
dass die Stammwicklung in zwei Stammwicklungsteile (1 , 2) aufgeteilt ist  that the parent winding is divided into two main winding parts (1, 2)
und dass die mindestens eine Regelwicklung (4; W1 , W2, W3) und die sie  and that the at least one control winding (4; W1, W2, W3) and they
beschaltende Stufenschalteinrichtung (3) elektrisch zwischen den beiden  connecting step switching device (3) electrically between the two
Stammwicklungsteilen (1 , 2) angeordnet ist.  Main winding parts (1, 2) is arranged.
2. Transformator mit Stufenschalteinrichtung gem. Anspruch 1 , 2. Transformer with tap changer gem. Claim 1,
dadurch gekennzeichnet,  characterized,
dass die Stufenschalteinrichtung (3) zwei oder mehr Module (M1 , M2, M3, M4) aufweist,  the step-switching device (3) has two or more modules (M1, M2, M3, M4),
wobei jedes Modul (M1 , M2, M3, M4) jeweils eine Teilwicklung (W1 , W2, W3, W4) der Regelwicklung (4) sowie beidseitig davon zwei Überbrückungspfade umfasst, wobei jeder Überbrückungspfad jeweils eine Reihenschaltung aus zwei Halbleiter- Schaltelementen (S1.1 , S1 .2; S1.3, S1 .4; S2.1 , S2.2; S2.3, S2.4; S3.1 , S3.2; S3.3, S3.4; S4.1 , S4.2; S4.3, S4.4) umfasst,  wherein each module (M1, M2, M3, M4) each comprise a partial winding (W1, W2, W3, W4) of the control winding (4) and on both sides thereof two bridging paths, each bridging path each comprising a series arrangement of two semiconductor switching elements (S1. 1, S1, 2, S1.3, S1, 4, S2, S2.2, S2.3, S2.4, S3.1, S3.2, S3.3, S3.4, S4.1, S4.2; S4.3, S4.4),
wobei jeweils zwischen den beiden in Reihe geschalteten Schaltelementen (S1.1 , S1 .2; S1.3, S1.4; S2.1 , S2.2; S2.3, S2.4; S3.1 , S3.2; S3.3, S3.4; S4.1 , S4.2; S4.3, S4.4) jedes Überbrückungspfades eine Mittenanzapfung (M1 .1 , M1.2; M2.1 , M2.2; M3.1 . M3.2; M4.1 , M4.2) vorgesehen ist,  in each case between the two series-connected switching elements (S1.1, S1 .2, S1.3, S1.4; S2.1, S2.2; S2.3, S2.4; S3.1, S3.2; S3.3, S3.4, S4.1, S4.2, S4.3, S4.4) of each bridging path, a center tap (M1.1, M1.2, M2.1, M2.2, M3.1, M3 .2; M4.1, M4.2) is provided,
wobei die Teilwicklungen (W1 , W2, W3, W4) unterschiedliche Windungszahlen besitzen,  wherein the partial windings (W1, W2, W3, W4) have different numbers of turns,
wobei jeweils eine der beiden Mittanzapfungen (M1.1 ; M2.1 , M2.2; M3.1 , M3.2; M4.2) jedes Moduls (M1 , M2, M3, M4) mit einer Mittanzapfung der benachbarten Module verbunden ist  wherein in each case one of the two center taps (M1.1, M2.1, M2.2, M3.1, M3.2, M4.2) of each module (M1, M2, M3, M4) is connected to a center tap of the adjacent modules
und wobei die eine verbleibende Mittenanzapfung (M1 .2) des ersten Moduls (M1 ) mit dem einen Stammwicklungsteil (2) und die eine verbleibende Mittenanzapfung (M3.1 ; M4.1 ) des letzten Moduls (M3; M4) mit dem anderen Stammwicklungsteil (1 ) elektrisch verbunden sind. and wherein the one remaining center tap (M1 .2) of the first module (M1) with the one main winding part (2) and the one remaining center tap (M3.1; M4.1) of the last module (M3; M4) with the other main winding part (1) are electrically connected.
3. Transformator mit Stufenschalteinrichtung gem. Anspruch 1 , 3. Transformer with tap changer gem. Claim 1,
dadurch gekennzeichnet,  characterized,
dass die Stufenschalteinrichtung (3) zwei in Reihe geschaltete Schaltbaugruppen (A, B) aufweist,  in that the tap changer (3) has two switch assemblies (A, B) connected in series,
wobei die erste Schaltbaugruppe (A) ihrerseits eine Parallelschaltung von zwei Zweigen (9, 10) besitzt,  wherein the first switch assembly (A) in turn has a parallel connection of two branches (9, 10),
wobei im ersten Zweig (9) in Reihenschaltung zueinander zwei Halbleiter- Schalteinheiten (S1 , S2) und im parallelen zweiten Zweig (10) in Reihenschaltung zueinander zwei weitere Halbleiter-Schalteinheiten (S3, S4) vorgesehen sind, wobei zwischen den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S1 , S2) im ersten Zweig (9) und den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S3, S4) im zweiten Zweig (10) eine erste Teilwicklung (W1 ) der Regelwicklung angeordnet ist,  wherein in the first branch (9) in series connection to each other two semiconductor switching units (S1, S2) and in the parallel second branch (10) in series with each other two further semiconductor switching units (S3, S4) are provided, wherein between the two connected in series Semiconductor switching units (S1, S2) in the first branch (9) and the two series-connected semiconductor switching units (S3, S4) in the second branch (10) is arranged a first part winding (W1) of the control winding,
wobei die zweite Schaltbaugruppe (B) eine Parallelschaltung von drei Zweigen (1 1 , 12, 13) aufweist,  wherein the second switch assembly (B) comprises a parallel connection of three branches (1 1, 12, 13),
wobei im dritten Zweig (1 1 ) in Reihenschaltung zueinander zwei Halbleiter- Schalteinheiten (S5, S6) , im vierten Zweig (12) in Reihenschaltung zueinander zwei Halbleiter-Schalteinheiten (S7, S8) und im fünften Zweig (13) in Reihenschaltung zueinander zwei Halbleiter-Schalteinheiten (S9, S10) vorgesehen sind,  wherein in the third branch (1 1) in series with each other two semiconductor switching units (S5, S6), in the fourth branch (12) in series with each other two semiconductor switching units (S7, S8) and in the fifth branch (13) in series with each other two Semiconductor switching units (S9, S10) are provided,
wobei zwischen den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S5, S6) im dritten Zweig (1 1 ) und den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S7, S8) im vierten Zweig (12) eine zweite Teilwicklung (W2) der Regelwicklung und zwischen den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S7, S8) im vierten Zweig (12) und den beiden in Reihe geschalteten Halbleiter-Schalteinheiten (S9, S10) im fünften Zweig (13) eine dritte Teilwicklung (W3) angeordnet ist und wobei jeweils eine der beiden Schaltbaugruppen (A oder B) elektrisch mit jeweils einer der Stammwicklungsteile (1 oder 2) elektrisch verbunden sind.  wherein between the two series-connected semiconductor switching units (S5, S6) in the third branch (1 1) and the two series-connected semiconductor switching units (S7, S8) in the fourth branch (12), a second part winding (W2) of the control winding and between the two series-connected semiconductor switching units (S7, S8) in the fourth branch (12) and the two series-connected semiconductor switching units (S9, S10) in the fifth branch (13), a third partial winding (W3) is arranged and wherein each one of the two switching modules (A or B) are electrically connected to one of the main winding parts (1 or 2).
4. Transformator mit Stufenschalteinrichtung gem. Anspruch 1 , 2 oder 3 4. Transformer with tap changer gem. Claim 1, 2 or 3
dadurch gekennzeichnet,  characterized,
dass ein mechanischer Kontakt (5) zusätzlich vorgesehen ist, der die  that a mechanical contact (5) is additionally provided, which the
Stufenschalteinrichtung (3) überbrücken kann, derart, dass bedarfsweise eine direkte elektrische Verbindung zwischen den beiden Stammwicklungsteilen (1 , 2) herstellbar ist.  Stepping device (3) can bridge, such that, if necessary, a direct electrical connection between the two parent winding parts (1, 2) can be produced.
EP13700690.4A 2012-02-13 2013-01-15 Transformer with on-load tap-changing device Revoked EP2815411B1 (en)

Applications Claiming Priority (2)

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DE102012202105.1A DE102012202105B4 (en) 2012-02-13 2012-02-13 Transformer with tap changer
PCT/EP2013/050611 WO2013120642A1 (en) 2012-02-13 2013-01-15 Transformer with on-load tap-changing device

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DE102012202105B4 (en) 2014-08-07
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BR112014019987A2 (en) 2017-07-04
RU2632194C2 (en) 2017-10-03
RU2014137003A (en) 2016-04-10
AU2013220673A1 (en) 2014-09-25
KR20140122278A (en) 2014-10-17
AU2013220673B2 (en) 2017-01-05
CN104094369B (en) 2016-10-26
WO2013120642A1 (en) 2013-08-22
CA2861465A1 (en) 2013-08-22
ES2637656T3 (en) 2017-10-16
EP2815411B1 (en) 2017-05-31
CA2861465C (en) 2019-09-17
US20140375407A1 (en) 2014-12-25
DE102012202105A1 (en) 2013-08-14
HK1201634A1 (en) 2015-09-04
US9123464B2 (en) 2015-09-01
JP6250560B2 (en) 2017-12-20
CN104094369A (en) 2014-10-08

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