EP3577665B1 - Active part for an electrical high-voltage device - Google Patents

Active part for an electrical high-voltage device Download PDF

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Publication number
EP3577665B1
EP3577665B1 EP18711041.6A EP18711041A EP3577665B1 EP 3577665 B1 EP3577665 B1 EP 3577665B1 EP 18711041 A EP18711041 A EP 18711041A EP 3577665 B1 EP3577665 B1 EP 3577665B1
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EP
European Patent Office
Prior art keywords
core
active part
winding
distribution
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18711041.6A
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German (de)
French (fr)
Other versions
EP3577665A1 (en
Inventor
Markus Baumann
Klaus Delatron
Julian Kraus
Manfred Montag
Erwin Sauer
Christer Vogt
David Weber
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Siemens Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication of EP3577665A1 publication Critical patent/EP3577665A1/en
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Publication of EP3577665B1 publication Critical patent/EP3577665B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/321—Insulating of coils, windings, or parts thereof using a fluid for insulating purposes only

Definitions

  • the invention relates to an active part for an electrical high-voltage device with a magnetizable core, at least one winding held on the core for generating a magnetic flux in the core and connecting lines which are each connected at their winding end to a named winding and at their distribution end to a distribution device of the active part , wherein the core forms at least one beveled core corner and the distribution device is arranged in the area of the beveled core corner.
  • Such an active part is from the U.S. 2013/147594 A1 known.
  • a low voltage transformer that can be assembled in a modular fashion. Two half legs protrude from a flat section of a base part with beveled corners. The half legs of a correspondingly designed base part are placed on these half legs, so that core legs are formed in this way, which are formed in the assembled state of the transformer core legs that each extend through a winding.
  • connection lines are designed as cables and extend from the respective winding tap to a distribution device of the active part.
  • the connecting lines are laid inside a tank filled with an insulating fluid and run above the windings. All connection lines are for connection to the distribution system brought together above the core yoke and connected there to the distribution device.
  • EP 3 048 623 A1 discloses an active part for a traction transformer that includes a core with a core leg and windings that concentrically surround a core leg of the core.
  • a distributor device is also described, which is connected to one of the windings via a connecting line.
  • the previously known active part has the disadvantage that due to the arrangement of the connection lines above the windings, the tank for accommodating the active part must be designed to take up a lot of space. However, the space available for electrical devices is limited, particularly in rail operations.
  • the object of the invention is therefore to provide an active part of the type mentioned at the outset that is compact.
  • the distribution device is designed as a distribution strip that extends in a longitudinal direction, with the distribution strip forming a plurality of cable connections lying next to one another, which are each connected to a named connection line, and the cable connections being connected to their respective associated Connecting line facing away from each other are connected to a busbar of the active part, which is connected at its end remote from the distribution strip with a connector system of cable sockets of the active part.
  • the active part according to the invention has a core with beveled core corners.
  • the beveled corners of the core provide additional space for the distribution device.
  • the distribution device otherwise arranged above the windings be arranged in the area of the beveled core corner, so that the active part according to the invention is designed to be more compact and can therefore be arranged in a smaller tank.
  • the high-voltage device composed of the active part according to the invention and a tank arranged thereon is therefore also more compact and lighter than a high-voltage device according to the prior art.
  • a transformer or a choke can be used as an electrical high-voltage device.
  • the electrical high-voltage device is a railway transformer, the longitudinal direction of the windings of the railway transformer extending in a horizontal direction in the installed position.
  • the windings of the active part are in the tank.
  • Magnetizable materials are to be understood here as meaning ferromagnetic materials such as iron.
  • the distribution device is designed as a distribution strip that extends in a longitudinal direction, the distribution strip having a plurality of cable connections lying next to one another, which are each connected to the distribution end of a Z respective associated connecting line.
  • the length of the distribution strip is adapted to the installation space made available by the beveled corner, so that the distribution strip can be installed in the region of the beveled corner on the active part.
  • the distribution bar enables a clear connection of the active part.
  • the cable connections are electrically connected on their side facing away from the connecting line to a busbar, which is connected to a plug-in system of cable sockets on the active part at its end facing away from the distribution strip.
  • the cable sockets as a lead-through system, advantageously extend through the wall of a tank at ground potential, in which the active part is arranged. In this way, an external connection of the active part is made possible.
  • the core defines upper and lower yokes and at least one outer core leg extending between the upper and lower yokes, each outer core leg and, for example, the upper yoke together forming a chamfered core corner.
  • the outer core leg and each yoke form a corner that is rectangular in cross-sectional view.
  • this core corner is chamfered, with the chamfer creating, for example, two interior angles instead of a 90-degree interior angle between the outside of the yoke and the outer core limb in a cross-sectional view.
  • the upper yoke and a straight bevel form an internal angle of 135 degrees with respect to their common upper point of intersection in cross-sectional view, said bevel and the outer contour of the core leg also forming an angle of 135 degrees with respect to their point of intersection in cross-sectional view.
  • An additional installation space is provided above said bevel, which is used within the scope of the invention for the winding connection.
  • two outer core legs are provided.
  • two or four additional installation spaces are provided, so that the distribution device can be divided between the two or four additional installation spaces.
  • the distribution device consists of two parts, each of which is assigned to a winding arrangement.
  • the winding arrangement comprises, for example, two concentrically arranged windings through which one of the outer core limbs extends.
  • each outer core leg is surrounded concentrically by two windings.
  • a transformer is provided which does not have any dead-winding feedback legs having.
  • connection conductors are designed as insulated round conductors that have an inner current conductor that is surrounded by an outer cable insulation.
  • the cable insulation ensures increased dielectric strength of the connecting lines, so that they can be laid close to the turns of the respective winding.
  • cables can also be used as insulated round conductors.
  • connection conductors extend on an outside of the outer winding, which faces away from each adjacent winding. According to this advantageous further development, the connecting conductors no longer run above the windings, so that the need for an additional internal volume in the tank is avoided.
  • connection lines extend from a winding tap arranged on the outside of the winding along said outside of the winding, which is remote from any other winding.
  • a beveled core corner is formed on this outside together with the respective yoke, in the vicinity of which the distribution unit is at least partially arranged.
  • each outer winding of the winding arrangement has a side that faces the other parallel winding arrangement.
  • the winding arrangement also forms a side facing away from the other winding arrangement, which is referred to here as the outside of the winding or winding arrangement.
  • the connecting lines are routed along this outside directly to the distribution device, so that a complex and space-consuming collection of cables is avoided.
  • the windings are also tapped on the outside.
  • the core is composed of magnetizable metal sheets that lie flat against one another.
  • the sheets are preferably iron sheets that are insulated from one another, so that eddy current losses are reduced.
  • FIG. 1 shows an embodiment of an active part according to the prior art.
  • the active part 1 shown has a core 2, which has an upper yoke 3 and a lower yoke, not shown in the figures.
  • Two core legs 4 extend between the upper yoke 3 and the lower yoke.
  • Each core limb 4 consists of two windings arranged concentrically to one another surrounded, of which only the outer high-voltage windings 7 and 8 can be seen in the figure shown.
  • the low-voltage windings are each arranged inside the high-voltage windings 7 , 8 .
  • Connection lines 9 are provided for connecting the windings, each of which has a winding end 10 and a distributor end 11 .
  • Each connecting line 9 is connected to the winding end 10 with a tap of a winding, for example the high-voltage winding 7 .
  • each connection line 9 is connected to a distribution device 12, which consists of a large number of cable sockets 12 here.
  • a cable plug can be inserted into a cable socket 12 and the winding can thus be connected to an external component as desired.
  • the external component is, for example, a converter, a switch or the like.
  • FIG 2 shows an exemplary embodiment of the active part 1 according to the invention, which again comprises a core 2 .
  • the core 2 has two outer legs 4, each of which is surrounded by two windings arranged concentrically to one another. Of the windings, only the outer winding, the high-voltage winding 7, 8, can be seen.
  • the core 2 is again composed of metal sheets 13 made of a magnetizable material, here iron, lying flat against one another, the metal sheets 13 being clamped together by a lower and an upper press frame 5 (not shown in the figure).
  • the upper press frame 5 consists of two press parts 5 a and 5 b which are arranged on both sides of the upper yoke 3 and which are mechanically connected to one another via yoke bolts 14 .
  • the non-magnetic yoke bolts 14 extend through the upper yoke 3, with nuts 15 being provided on both end sides for generating the clamping force.
  • each outer leg 4 forms a beveled corner 16 with the upper yoke 3, which each provide additional installation space due to the lack of a "semi-corner".
  • the outer contour of the upper yoke 3 forms an inner angle of about 135 degrees with the outer contour of the bevel 17 .
  • FIG 3 shows the head area of the active part 1 according to FIG figure 2 in a top view.
  • the beveled core corners 16 can also be seen here. where is in figure 3 the outer contour of the core without beveled core corners 16 is illustrated with the aid of the dashed lines 18 .
  • the dashed line 18 therefore illustrates the installation space gained by beveling the corners, ie the missing half-corners.
  • a distribution unit designed as a distribution strip 19 is arranged in this area.
  • Each distribution strip 19 extends in a longitudinal direction, with each distribution strip 19 having cable connections 20 arranged next to one another.
  • the cable connections 20 are designed here as cable lugs, which are electrically connected to the distributor ends 11 of the connecting conductors 9, which are designed here as insulated round conductors.
  • the connecting conductors 9 again have a winding end (not shown in the figure) with which they are electrically connected to a tap of an associated winding.
  • the cable connections 20 are each connected to a busbar 21, which in turn is connected to a cable bushing 22 as a bushing system on its side facing away from the respective cable connection 20.
  • the cable sockets 22 are arranged in the tank wall and are accessible from the outside, so that the respective winding tap can be connected to an external component by inserting a cable plug into the cable socket 22 .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Description

Die Erfindung betrifft ein Aktivteil für ein elektrisches Hochspannungsgerät mit einem magnetisierbaren Kern, wenigstens einer am Kern gehaltenen Wicklung zum Erzeugen eines magnetischen Flusses im Kern und Anschlussleitungen, die jeweils an ihrem Wicklungsende mit einer genannten Wicklung und an ihrem Verteilende mit einer Verteileinrichtung des Aktivteils verbunden sind, wobei der Kern zumindest eine abgeschrägte Kernecke ausbildet und die Verteileinrichtung im Bereich der abgeschrägten Kernecke angeordnet ist.The invention relates to an active part for an electrical high-voltage device with a magnetizable core, at least one winding held on the core for generating a magnetic flux in the core and connecting lines which are each connected at their winding end to a named winding and at their distribution end to a distribution device of the active part , wherein the core forms at least one beveled core corner and the distribution device is arranged in the area of the beveled core corner.

Ein solches Aktivteil ist aus der US 2013/147594 A1 bekannt. Dort ist ein Transformator für geringe Spannungen gezeigt, der modular zusammengesetzt werden kann. Aus einem Flachabschnitt eines Basisteils mit abgeschrägten Ecken ragen zwei Halbschenkel auf. Auf diese Halbschenkel werden die Halbschenkel eines entsprechend ausgebildeten Basisteils aufgesetzt, so dass auf diese Weise Kernschenkel ausgebildet sind, die im zusammengesetzten Zustand des Transformators Kernschenkel ausgebildet sind, die sich jeweils durch eine Wicklung erstrecken.Such an active part is from the U.S. 2013/147594 A1 known. There is shown a low voltage transformer that can be assembled in a modular fashion. Two half legs protrude from a flat section of a base part with beveled corners. The half legs of a correspondingly designed base part are placed on these half legs, so that core legs are formed in this way, which are formed in the assembled state of the transformer core legs that each extend through a winding.

Weiterer Stand der Technik ist aus der US 8 558 651 B2 bekannt.Further prior art is from U.S. 8,558,651 B2 known.

Dem Fachmann sind aus der Praxis Aktivteile bekannt, die mit Anschlussleitungen ausgerüstet sind, um die Wicklungen des Aktivteils zweckmäßig mit externen Komponenten zu verbinden. In der Regel sind die Anschlussleitungen als Kabel ausgeführt und erstrecken sich von der jeweiligen Wicklungsanzapfung zu einer Verteileinrichtung des Aktivteils. Die Anschlussleitungen sind innerhalb eines mit einem Isolierfluid befüllten Kessel verlegt und verlaufen oberhalb der Wicklungen. Zum Anschluss an die Verteileinrichtung sind alle Verbindungsleitungen oberhalb des Kernjoches zusammengeführt und dort mit der Verteileinrichtung verbunden.Active parts are known to those skilled in the art from practice, which are equipped with connection lines in order to expediently connect the windings of the active part to external components. As a rule, the connection lines are designed as cables and extend from the respective winding tap to a distribution device of the active part. The connecting lines are laid inside a tank filled with an insulating fluid and run above the windings. All connection lines are for connection to the distribution system brought together above the core yoke and connected there to the distribution device.

In der EP 3 048 623 A1 ist ein Aktivteil für einen Bahntransformator offenbart, der einen Kern mit Kernschenkel und Wicklungen offenbart, die einen Kernschenkel des Kerns konzentrisch umgeben. Ferner ist eine Verteilereinrichtung beschrieben, die über eine Verbindungsleitung mit einer der Wicklungen verbunden ist.In the EP 3 048 623 A1 discloses an active part for a traction transformer that includes a core with a core leg and windings that concentrically surround a core leg of the core. A distributor device is also described, which is connected to one of the windings via a connecting line.

Weiterer Stand der Technik ist aus der CN 204 010 078 U , JP S61 174704 A und aus der WO 2016/038222 A1 bekannt.Further prior art is from CN 204 010 078 U , JP S61 174704 A and from the WO 2016/038222 A1 known.

Dem vorbekannte Aktivteil haftet der Nachteil an, dass aufgrund der Anordnung der Anschlussleitungen oberhalb der Wicklungen der Kessel zur Aufnahme des Aktivteils raumgreifend ausgestaltet sein muss. Insbesondere im Bahnbetrieb sind jedoch die zur Verfügung stehenden Bauräume für elektrische Geräte begrenzt.The previously known active part has the disadvantage that due to the arrangement of the connection lines above the windings, the tank for accommodating the active part must be designed to take up a lot of space. However, the space available for electrical devices is limited, particularly in rail operations.

Aufgabe der Erfindung ist es daher, ein Aktivteil der eingangs genannten Art bereitzustellen, das kompakt ist.The object of the invention is therefore to provide an active part of the type mentioned at the outset that is compact.

Die Erfindung löst diese Aufgabe dadurch, dass die Verteileinrichtung als Verteilleiste ausgebildet ist, die sich in einer Längsrichtung erstreckt, wobei die Verteilleiste mehrere nebeneinander liegende Kabelanschlüsse ausbildet, die mit jeweils einer genannten Anschlussleitung verbunden sind, und wobei die Kabelanschlüsse an ihrer von der jeweils zugehörigen Anschlussleitung abgewandten Seite jeweils mit einer Sammelschiene des Aktivteils verbunden sind, die an ihrem von der Verteilleiste abgewandten Ende mit einem Stecksystem aus Kabelbuchsen des Aktivteils verbunden ist.The invention achieves this object in that the distribution device is designed as a distribution strip that extends in a longitudinal direction, with the distribution strip forming a plurality of cable connections lying next to one another, which are each connected to a named connection line, and the cable connections being connected to their respective associated Connecting line facing away from each other are connected to a busbar of the active part, which is connected at its end remote from the distribution strip with a connector system of cable sockets of the active part.

Das erfindungsgemäße Aktivteil weist einen Kern mit abgeschrägten Kernecken auf. Die abgeschrägten Kernecken stellen einen zusätzlichen Bauraum für die Verteileinrichtung bereit. So kann die ansonsten über den Wicklungen angeordnete Verteileinrichtung im Bereich der abgeschrägten Kernecke angeordnet werden, so dass das erfindungsgemäße Aktivteil kompakter ausgestaltet ist und somit in einem kleineren Kessel angeordnet werden kann. Das aus dem erfindungsgemäßen Aktivteil und einem daran angeordneten Kessel zusammengesetzte Hochspannungsgerät ist daher ebenfalls kompakter und leichter als ein Hochspannungsgerät gemäß dem Stand der Technik.The active part according to the invention has a core with beveled core corners. The beveled corners of the core provide additional space for the distribution device. Thus, the distribution device otherwise arranged above the windings be arranged in the area of the beveled core corner, so that the active part according to the invention is designed to be more compact and can therefore be arranged in a smaller tank. The high-voltage device composed of the active part according to the invention and a tank arranged thereon is therefore also more compact and lighter than a high-voltage device according to the prior art.

Als elektrisches Hochspannungsgerät kommt hier beispielsweise ein Transformator oder eine Drossel in Betracht. Insbesondere ist das elektrische Hochspannungsgerät ein Bahntransformator, wobei sich die Längsrichtung der Wicklungen des Bahntransformators in der eingebauten Stellung in einer Horizontalen erstrecken. Mit anderen Worten liegen die Wicklungen des Aktivteils im Kessel. Unter magnetisierbaren Materialien sind hier ferromagnetische Materialien, wie beispielsweise Eisen, zu verstehen.A transformer or a choke, for example, can be used as an electrical high-voltage device. In particular, the electrical high-voltage device is a railway transformer, the longitudinal direction of the windings of the railway transformer extending in a horizontal direction in the installed position. In other words, the windings of the active part are in the tank. Magnetizable materials are to be understood here as meaning ferromagnetic materials such as iron.

Erfindungsgemäß ist die Verteileinrichtung als Verteilleiste ausgebildet, die sich in einer Längsrichtung erstreckt, wobei die Verteilleiste mehrere nebeneinander liegende Kabelanschlüsse aufweist, die jeweils mit dem Verteilerende einer Z jeweils zugehörigen Anschlussleitung verbunden sind. Die Verteilleiste erstreckt sich in einer an den durch die abgeschrägte Ecke zur Verfügung gestellten Bauraum angepassten Länge, so dass die Verteilleiste im Bereich der abgeschrägten Ecke am Aktivteil eingebaut werden kann. Die Verteilleiste ermöglicht einen übersichtlichen Anschluss des Aktivteils.According to the invention, the distribution device is designed as a distribution strip that extends in a longitudinal direction, the distribution strip having a plurality of cable connections lying next to one another, which are each connected to the distribution end of a Z respective associated connecting line. The length of the distribution strip is adapted to the installation space made available by the beveled corner, so that the distribution strip can be installed in the region of the beveled corner on the active part. The distribution bar enables a clear connection of the active part.

Im Rahmen der Erfindung sind die Kabelanschlüsse an ihrer von der Anschlussleitung abgewandten Seite jeweils elektrisch mit einer Sammelschiene verbunden, die an ihrem von der Verteilleiste abgewandten Ende mit einem Stecksystem aus Kabelbuchsen der Aktivteils verbunden ist. Dabei erstreckt sich die Kabelbuchsen als Durchführungssystem vorteilhafterweise durch die Wandung eines Kessels auf Erdpotential, in dem das Aktivteil angeordnet ist. Auf diese Weise ist ein Außenanschluss des Aktivteils ermöglicht.In the context of the invention, the cable connections are electrically connected on their side facing away from the connecting line to a busbar, which is connected to a plug-in system of cable sockets on the active part at its end facing away from the distribution strip. In this case, the cable sockets, as a lead-through system, advantageously extend through the wall of a tank at ground potential, in which the active part is arranged. In this way, an external connection of the active part is made possible.

Vorteilhafterweise bildet der Kern ein oberes und unteres Joch sowie wenigstens einen äußeren Kernschenkel aus, der sich zwischen dem oberen und dem unteren Joch erstreckt, wobei jeder äußere Kernschenkel und z.B. das obere Joch zusammen eine abgeschrägte Kernecke ausbilden. Gemäß dem Stand der Technik bilden der äußere Kernschenkel und das jeweilige Joch eine Ecke aus, die in einer Querschnittsansicht rechteckig ausgestaltet ist. Im Rahmen der Erfindung ist diese Kernecke abgeschrägt, wobei durch die Abschrägung anstelle eines 90 Grad Innenwinkels zwischen der Außenseite des Jochs und dem äußeren Kernschenkel in einer Querschnittsansicht z.B. zwei Innenwinkel aufgespannt sind. So spannen beispielsweise das obere Joch und eine gerade verlaufende Abschrägung bezüglich ihres gemeinsamen oberen Schnittpunktes in der Querschnittsansicht einen Innenwinkel von 135 Grad auf, wobei die besagte Abschrägung und die äußere Kontur des Kernschenkels bezüglich ihres Schnittpunktes in Querschnittsansicht ebenfalls einen Winkel von 135 Grad aufspannen. Oberhalb der besagten Abschrägung ist ein zusätzlicher Bauraum bereitgestellt, der im Rahmen der Erfindung zum Wicklungsanschluss genutzt wird.Advantageously, the core defines upper and lower yokes and at least one outer core leg extending between the upper and lower yokes, each outer core leg and, for example, the upper yoke together forming a chamfered core corner. According to the prior art, the outer core leg and each yoke form a corner that is rectangular in cross-sectional view. Within the scope of the invention, this core corner is chamfered, with the chamfer creating, for example, two interior angles instead of a 90-degree interior angle between the outside of the yoke and the outer core limb in a cross-sectional view. For example, the upper yoke and a straight bevel form an internal angle of 135 degrees with respect to their common upper point of intersection in cross-sectional view, said bevel and the outer contour of the core leg also forming an angle of 135 degrees with respect to their point of intersection in cross-sectional view. An additional installation space is provided above said bevel, which is used within the scope of the invention for the winding connection.

Gemäß einer diesbezüglich zweckmäßigen Weiterentwicklung sind zwei äußere Kernschenkel vorgesehen. Bei dieser Variante sind zwei oder vier zusätzliche Einbauräume bereitgestellt, so dass die Verteileinrichtung auf beide beziehungsweise vier zusätzlichen Einbauräume aufgeteilt werden kann. So besteht die Verteileinrichtung beispielsweise aus zwei Teilen, die jeweils einer Wicklungsanordnung zugeordnet sind. Die Wicklungsanordnung umfasst beispielsweise zwei konzentrisch angeordnete Wicklungen, durch die sich einer der äußeren Kernschenkel erstreckt.According to an expedient further development in this regard, two outer core legs are provided. In this variant, two or four additional installation spaces are provided, so that the distribution device can be divided between the two or four additional installation spaces. For example, the distribution device consists of two parts, each of which is assigned to a winding arrangement. The winding arrangement comprises, for example, two concentrically arranged windings through which one of the outer core limbs extends.

Gemäß einer bevorzugten Ausführung der Erfindung ist jeder äußere Kernschenkel konzentrisch von zwei Wicklungen umschlossen. Auf diese Art und Weise ist ein Transformator bereitgestellt, der keine wicklungsfreien Rückführungsschenkel aufweist. Abweichend davon ist es jedoch im Rahmen der Erfindung auch möglich, einen Kern mit zwei äußeren Rückführungsschenkeln auszubilden, wobei die Verbindung zwischen dem Rückführungsschenkel und dem oberen und unteren Joch zumindest am oberen Joch jeweils abgeschrägt ist, so dass sich wieder Bauräume für die Verteileinrichtung ergeben.According to a preferred embodiment of the invention, each outer core leg is surrounded concentrically by two windings. In this way a transformer is provided which does not have any dead-winding feedback legs having. Deviating from this, however, it is also possible within the scope of the invention to form a core with two outer return legs, the connection between the return leg and the upper and lower yoke being beveled at least on the upper yoke, so that there is again space for the distribution device.

Gemäß einer bevorzugten Ausgestaltung der Erfindung sind die Anschlussleiter als isolierte Rundleiter ausgeführt, die einen inneren Stromleiter aufweisen, der von einer äußeren Kabelisolierung umschlossen ist. Die Kabelisolierung sorgt für eine erhöhte Spannungsfestigkeit der Verbindungsleitungen, so dass diese in der Nähe zu den Windungen der jeweiligen Wicklung verlegt werden können. Als isolierter Rundleiter kommen auch Kabel im Rahmen der Erfindung in Betracht.According to a preferred embodiment of the invention, the connection conductors are designed as insulated round conductors that have an inner current conductor that is surrounded by an outer cable insulation. The cable insulation ensures increased dielectric strength of the connecting lines, so that they can be laid close to the turns of the respective winding. Within the scope of the invention, cables can also be used as insulated round conductors.

Gemäß einer bevorzugten Ausgestaltung der Erfindung erstrecken sich die Anschlussleiter an einer Außenseite der äußeren Wicklung, die von jeder benachbarten Wicklung abgewandt ist. Die Anschlussleiter verlaufen gemäß dieser vorteilhaften Weiterentwicklung somit nicht länger oberhalb der Wicklungen, so dass das Erfordernis eines zusätzlichen Innenvolumens im Kessel vermieden ist. Die Anschlussleitungen erstrecken sich bei dieser Variante der Erfindung von einer an der Außenseite der Wicklung angeordneten Wicklungsanzapfung an der besagten Außenseite der Wicklung entlang, die von jeder anderen Wicklung abgewandt ist. An dieser Außenseite ist im Rahmen der Erfindung zusammen mit dem jeweiligen Joch abgeschrägte Kernecke ausgebildet, in dessen Umgebung die Verteilereinheit zumindest teilweise angeordnet ist. Ist das Aktivteil beispielsweise mit zwei Wicklungsanordnungen ausgerüstet, weist jede äußere Wicklung der Wicklungsanordnung eine Seite auf, die von der anderen parallelen Wicklungsanordnung zugewandt ist. Darüber hinaus bildet die Wicklungsanordnung jedoch auch eine von der anderen Wicklungsanordnung abgewandte Seite aus, die hier als Außenseite der Wicklung oder Wicklungsanordnung bezeichnet wird. Die Anschlussleitungen sind an dieser Außenseite entlang direkt zur Verteileinrichtung geführt, so dass eine aufwändige und raumgreifende Kabelsammlung vermieden ist. Die Anzapfung der Wicklungen sind ebenfalls an der Außenseite angeordnet.According to a preferred embodiment of the invention, the connection conductors extend on an outside of the outer winding, which faces away from each adjacent winding. According to this advantageous further development, the connecting conductors no longer run above the windings, so that the need for an additional internal volume in the tank is avoided. In this variant of the invention, the connection lines extend from a winding tap arranged on the outside of the winding along said outside of the winding, which is remote from any other winding. Within the scope of the invention, a beveled core corner is formed on this outside together with the respective yoke, in the vicinity of which the distribution unit is at least partially arranged. If the active part is equipped with two winding arrangements, for example, each outer winding of the winding arrangement has a side that faces the other parallel winding arrangement. In addition, however, the winding arrangement also forms a side facing away from the other winding arrangement, which is referred to here as the outside of the winding or winding arrangement. The connecting lines are routed along this outside directly to the distribution device, so that a complex and space-consuming collection of cables is avoided. The windings are also tapped on the outside.

Gemäß einer weiteren Ausführung der Erfindung ist der Kern aus magnetisierbaren Blechen, die flächig aneinander anliegen, zusammengesetzt. Bei den Blechen handelt es sich bevorzugt um Eisenbleche, die gegeneinander isoliert sind, so dass Wirbelstromverluste herabgesetzt sind.According to a further embodiment of the invention, the core is composed of magnetizable metal sheets that lie flat against one another. The sheets are preferably iron sheets that are insulated from one another, so that eddy current losses are reduced.

Weitere zweckmäßige Ausgestaltungen und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung unter Bezug auf die Figuren der Zeichnung, wobei gleiche Bezugszeichen auf gleich wirkende Bauteile verweisen und wobei

Figur 1
ein Aktivteil gemäß dem Stand der Technik in einer perspektivischen Ansicht schematisch verdeutlicht,
Figur 2
ein Ausführungsbeispiel eines erfindungsgemäßen Aktivteils in einer perspektivischen Teilansicht ohne Verbindungsleitung verdeutlicht und
Figur 3
das Aktivteil gemäß Figur 2 mit Verteilleiste und Durchführungssystem schematisch zeigt.
Further expedient refinements and advantages of the invention are the subject of the following description of exemplary embodiments of the invention with reference to the figures of the drawing, in which the same reference symbols refer to components that function in the same way and in which:
figure 1
an active part according to the prior art schematically illustrated in a perspective view,
figure 2
an embodiment of an active part according to the invention in a perspective partial view without connecting line and
figure 3
the active part according to figure 2 shows schematically with distribution strip and implementation system.

Figur 1 zeigt ein Ausführungsbeispiel eines Aktivteils gemäß dem Stand der Technik. Das dargestellte Aktivteil 1 verfügt über einen Kern 2, der ein oberes Joch 3 sowie ein figürlich nicht dargestelltes unteres Joch aufweist. Zwischen dem oberen Joch 3 und dem unteren Joch erstrecken sich zwei Kernschenkel 4. Der Kern 2 ist aus magnetisierbaren Eisenblechen zusammengesetzt, die mit ihren Flachseiten aneinander anliegen und durch einen oberen Pressrahmen 5 sowie einen unteren Pressrahmen 6 miteinander verspannt sind. Jeder Kernschenkel 4 ist von zwei konzentrisch zueinander angeordneten Wicklungen umgeben, von denen in der gezeigten Figur jeweils nur die äußeren Oberspannungswicklungen 7 und 8 erkennbar sind. Die Unterspannungswicklungen sind jeweils im Inneren der Oberspannungswicklungen 7, 8 angeordnet. Zum Anschluss der Wicklungen sind Verbindungsleitungen 9 vorgesehen, die jeweils ein Wicklungsende 10 sowie ein Verteilerende 11 aufweisen. Mit dem Wicklungsende 10 ist jede Verbindungsleitung 9 mit einer Anzapfung einer Wicklung, beispielsweise der Oberspannungswicklung 7, verbunden. An ihrem Verteilende 11 ist jede Anschlussleitung 9 hingegen an eine Verteileinrichtung 12 angeschlossen, die hier aus einer Vielzahl von Kabelbuchsen 12 besteht. In eine Kabelbuchse 12 kann ein Kabelstecker eingeführt und somit die Wicklung, wie gewünscht, an eine externe Komponente angeschlossen werden. Die externe Komponente ist beispielsweise ein Umrichter, ein Schalter oder dergleichen. figure 1 shows an embodiment of an active part according to the prior art. The active part 1 shown has a core 2, which has an upper yoke 3 and a lower yoke, not shown in the figures. Two core legs 4 extend between the upper yoke 3 and the lower yoke. Each core limb 4 consists of two windings arranged concentrically to one another surrounded, of which only the outer high-voltage windings 7 and 8 can be seen in the figure shown. The low-voltage windings are each arranged inside the high-voltage windings 7 , 8 . Connection lines 9 are provided for connecting the windings, each of which has a winding end 10 and a distributor end 11 . Each connecting line 9 is connected to the winding end 10 with a tap of a winding, for example the high-voltage winding 7 . At its distribution end 11, however, each connection line 9 is connected to a distribution device 12, which consists of a large number of cable sockets 12 here. A cable plug can be inserted into a cable socket 12 and the winding can thus be connected to an external component as desired. The external component is, for example, a converter, a switch or the like.

Figur 2 zeigt ein Ausführungsbeispiel des erfindungsgemäßen Aktivteils 1, das wieder einen Kern 2 umfasst. Der Kern 2 verfügt über zwei äußere Schenkel 4, die jeweils von zwei konzentrisch zueinander angeordneten Wicklungen umschlossen sind. Von den Wicklungen ist jeweils nur die äußere Wicklung, die Oberspannungswicklung 7, 8 erkennbar. Der Kern 2 ist wieder aus flächig aneinander anliegenden Blechen 13 aus einem magnetisierbaren Material, hier Eisen, zusammengesetzt, wobei die Bleche 13 durch einen figürlich nicht dargestellten unteren und einen oberen Pressrahmen 5 miteinander verspannt sind. Der obere Pressrahmen 5 besteht wie der untere Pressrahmen aus zwei beidseitig des oberen Joches 3 angeordneten Pressteilen 5a und 5b, die über Jochbolzen 14 mechanisch miteinander verbunden sind. Die nicht magnetischen Jochbolzen 14 erstrecken sich dabei durch das obere Joch 3 hindurch, wobei auf beiden Endseiten Muttern 15 zum Erzeugen der Klemmkraft vorgesehen sind. figure 2 shows an exemplary embodiment of the active part 1 according to the invention, which again comprises a core 2 . The core 2 has two outer legs 4, each of which is surrounded by two windings arranged concentrically to one another. Of the windings, only the outer winding, the high-voltage winding 7, 8, can be seen. The core 2 is again composed of metal sheets 13 made of a magnetizable material, here iron, lying flat against one another, the metal sheets 13 being clamped together by a lower and an upper press frame 5 (not shown in the figure). Like the lower press frame, the upper press frame 5 consists of two press parts 5 a and 5 b which are arranged on both sides of the upper yoke 3 and which are mechanically connected to one another via yoke bolts 14 . The non-magnetic yoke bolts 14 extend through the upper yoke 3, with nuts 15 being provided on both end sides for generating the clamping force.

In Figur 2 ist sehr gut erkennbar, dass jeder äußere Schenkel 4 mit dem oberen Joch 3 eine abgeschrägte Ecke 16 ausbildet, die aufgrund der fehlenden "Halbecke" jeweils einen zusätzlichen Bauraum bereitstellen. In einer Querschnittsansicht, die figürlich nicht dargestellt ist, bildet die Außenkontur des oberen Joches 3 mit der Außenkontur der Abschrägung 17 einen Innenwinkel von etwa 135 Grad aus. Entsprechendes gilt für den Winkel, der in der Querschnittsansicht von der Außenkontur der Abschrägung 17 und der Außenkontur des äußeren Schenkels 4 aufgespannt wird, wobei hier jeweils von dem Innenwinkel gesprochen wird. Entsprechendes gilt für die abgeschrägte Kernecke 16 auf der in Figur 2 linken Seite.In figure 2 It can be seen very clearly that each outer leg 4 forms a beveled corner 16 with the upper yoke 3, which each provide additional installation space due to the lack of a "semi-corner". In a cross-sectional view, the is not shown in the figure, the outer contour of the upper yoke 3 forms an inner angle of about 135 degrees with the outer contour of the bevel 17 . The same applies to the angle that is spanned in the cross-sectional view by the outer contour of the bevel 17 and the outer contour of the outer leg 4, the inner angle being referred to here in each case. The same applies to the beveled core corner 16 on the in figure 2 left side.

Figur 3 zeigt den Kopfbereich des Aktivteils 1 gemäß Figur 2 in einer Draufsicht. Auch hier sind die abgeschrägten Kernecken 16 erkennbar. Dabei ist in Figur 3 mit Hilfe der gestrichelten Linien 18 die Außenkontur des Kerns ohne abgeschrägte Kernecken 16 verdeutlicht. Die gestrichelte Linie 18 verdeutlicht daher den durch die Abschrägung der Ecken gewonnenen Bauraum, also die fehlenden Halbecken. In diesem Bereich ist erfindungsgemäß eine als Verteilerleiste 19 ausgebildete Verteileinheit angeordnet. Dabei erstreckt sich jede Verteilleiste 19 in einer Längsrichtung, wobei jede Verteilleiste 19 nebeneinander angeordnete Kabelanschlüsse 20 aufweist. Die Kabelanschlüsse 20 sind hier als Kabelschuhe ausgeführt, die elektrisch mit den Verteilerenden 11 der Anschlussleiter 9 verbunden sind, die hier als isolierte Rundleiter ausgeführt sind. Die Anschlussleiter 9 weisen darüber hinaus wieder ein figürlich nicht dargestelltes Wicklungsende auf, mit dem sie elektrisch mit einer Anzapfung einer zugeordneten Wicklung verbunden sind. Die Kabelanschlüsse 20 sind jeweils mit einer Sammelschiene 21 verbunden, die wiederum an ihrer von dem jeweiligen Kabelanschluss 20 abgewandten Seite an eine Kabelbuchse 22 als Durchführungssystem angeschlossen sind. Die Kabelbuchse 22 sind nach dem Einbau des Aktivteils 1 in einen Kessel in der Kesselwand angeordnet und von außen zugänglich, so dass durch Einfügen eines Kabelsteckers in die Kabelbuchse 22 die jeweilige Wicklungsanzapfung mit einer externen Komponente verbunden werden kann. figure 3 shows the head area of the active part 1 according to FIG figure 2 in a top view. The beveled core corners 16 can also be seen here. where is in figure 3 the outer contour of the core without beveled core corners 16 is illustrated with the aid of the dashed lines 18 . The dashed line 18 therefore illustrates the installation space gained by beveling the corners, ie the missing half-corners. According to the invention, a distribution unit designed as a distribution strip 19 is arranged in this area. Each distribution strip 19 extends in a longitudinal direction, with each distribution strip 19 having cable connections 20 arranged next to one another. The cable connections 20 are designed here as cable lugs, which are electrically connected to the distributor ends 11 of the connecting conductors 9, which are designed here as insulated round conductors. In addition, the connecting conductors 9 again have a winding end (not shown in the figure) with which they are electrically connected to a tap of an associated winding. The cable connections 20 are each connected to a busbar 21, which in turn is connected to a cable bushing 22 as a bushing system on its side facing away from the respective cable connection 20. After the active part 1 has been installed in a tank, the cable sockets 22 are arranged in the tank wall and are accessible from the outside, so that the respective winding tap can be connected to an external component by inserting a cable plug into the cable socket 22 .

Claims (7)

  1. Active part (1) for an electrical high-voltage device having
    - a magnetizable core (2),
    - at least one winding (7, 8) held on the core (2) for generating a magnetic flux in the core (2) and
    - connection lines (9), which are each connected at their winding end (10) to a mentioned winding (7, 8) and at their distributor end (11) to a distribution device (19) of the active part,
    wherein the core (2) forms at least one chamfered core corner (16) and the distribution device (19) is arranged in the region of the chamfered core corner (16),
    characterized in that
    the distribution device is formed as a distribution strip (19), which extends in a longitudinal direction, wherein the distribution strip (19) forms a plurality of cable connections (20) lying next to one another, which are each connected to a mentioned connection line (9), and wherein the cable connections (20) are each connected at their side facing away from the respectively associated connection line (9) to a busbar (21) of the active part, which busbar is connected at its end facing away from the distribution strip to a plug system (22) composed of cable jacks (22) of the active part (1) .
  2. Active part (1) according to Claim 1,
    characterized in that
    the core forms an upper and lower yoke (3) and also at least one outer core limb (4), which extends between the upper and lower yoke (3), wherein each outer core limb (4) and the upper yoke (3) together form a chamfered core corner (16).
  3. Active part (1) according to Claim 2,
    characterized in that
    two outer core limbs (4) are provided.
  4. Active part (1) according to Claim 2 or 3,
    characterized in that
    the outer core limb (4) is surrounded concentrically by two windings.
  5. Active part (1) according to one of the preceding claims, characterized in that
    the connection conductors are insulated round conductors (9), which have an inner current conductor, which is surrounded by an outer cable insulation.
  6. Active part (1) according to one of the preceding claims, characterized in that
    the connection lines (9) run on an outer side of an outer winding (7, 8), which faces away from each adjacent winding.
  7. Active part (1) according to one of the preceding claims, characterized in that
    the core (2) is made up of magnetizable laminations (13) that bear against one another.
EP18711041.6A 2017-04-04 2018-03-05 Active part for an electrical high-voltage device Active EP3577665B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017205749.1A DE102017205749A1 (en) 2017-04-04 2017-04-04 Active part for a high-voltage electrical device
PCT/EP2018/055313 WO2018184777A1 (en) 2017-04-04 2018-03-05 Active part for an electrical high-voltage device

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Publication Number Publication Date
EP3577665A1 EP3577665A1 (en) 2019-12-11
EP3577665B1 true EP3577665B1 (en) 2022-06-15

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EP (1) EP3577665B1 (en)
CN (1) CN110462763B (en)
DE (1) DE102017205749A1 (en)
PL (1) PL3577665T3 (en)
WO (1) WO2018184777A1 (en)

Citations (2)

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US8558651B2 (en) * 2011-01-27 2013-10-15 Tamura Corporation Core fixing member and coil device

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DE102010012517B4 (en) * 2010-03-24 2015-07-23 Johann Lasslop Gmbh throttle
CN202230862U (en) * 2011-08-23 2012-05-23 常熟开关制造有限公司(原常熟开关厂） After-current transformer
DE202014000579U1 (en) * 2014-01-24 2014-02-20 Kendrion Kuhnke Automation Gmbh Electromagnet and electromagnetic system
CN204010978U (en) * 2014-08-29 2014-12-10 江苏南瑞帕威尔电气有限公司 Single-phase axial quadripartion amorphous alloy dry-type isolating transformer
EP3192087B1 (en) * 2014-09-12 2020-04-29 ABB Power Grids Switzerland AG Traction transformer
EP3048623B1 (en) * 2015-01-20 2017-11-22 Balikesir Elektromekanik Sanayi Tesisleri Anonim Sirketi Transformer with reduced height, volume and weight

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US8558651B2 (en) * 2011-01-27 2013-10-15 Tamura Corporation Core fixing member and coil device
US20130147594A1 (en) * 2011-09-23 2013-06-13 Yujing Technology Co., Ltd Transformer Structure Having Double-axis Iron Core

Also Published As

Publication number Publication date
EP3577665A1 (en) 2019-12-11
WO2018184777A1 (en) 2018-10-11
PL3577665T3 (en) 2022-09-19
CN110462763B (en) 2022-06-24
CN110462763A (en) 2019-11-15
DE102017205749A1 (en) 2018-10-04

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