EP3685413B1 - Winding unit with tappings formed on the support - Google Patents
Winding unit with tappings formed on the support Download PDFInfo
- Publication number
- EP3685413B1 EP3685413B1 EP18800503.7A EP18800503A EP3685413B1 EP 3685413 B1 EP3685413 B1 EP 3685413B1 EP 18800503 A EP18800503 A EP 18800503A EP 3685413 B1 EP3685413 B1 EP 3685413B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- support
- winding unit
- connection terminal
- insulating body
- 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
Links
- 238000004804 winding Methods 0.000 title claims description 100
- 238000010079 rubber tapping Methods 0.000 title description 10
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 3
- 239000012212 insulator Substances 0.000 description 8
- 239000000654 additive Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- 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
- H01F27/327—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Regulation Of General Use Transformers (AREA)
- Insulating Of Coils (AREA)
Description
Die Erfindung betrifft eine Wicklungseinheit zum Anschluss an ein Hochspannungsnetz mit einer in einem festen Isolierkörper eingebetteten Wicklung, einer ersten Hauptanschlussklemme, die mit einem ersten Wicklungsende der Wicklung verbunden und an einem ersten am Isolierkörper angeformten Stützer angeordnet ist, und einer zweiten Hauptanschlussklemme, die mit einem zweiten Wicklungsende der Wicklung verbunden ist, wobei die Wicklung Teilwicklungen und Anzapfungen aufweist, mittels derer die Anzahl der in Reihe geschalteten Windungen der Teilwicklungen einstellbar ist und die jeweils über eine jeweilige sich in dem Isolierkörper erstreckende Ausleitung mit einer jeweiligen von außen zugänglichen Anzapfungsanschlussklemme verbunden sind, wobei die Anzapfungsanschlussklemmen am Stützer ausgebildet sind, wobei jeder Stützer rotationssymmetrisch ausgebildet ist und sich in einer Längsrichtung erstreckt.The invention relates to a winding unit for connection to a high-voltage network with a winding embedded in a solid insulating body, a first main connection terminal, which is connected to a first winding end of the winding and is arranged on a first support molded onto the insulating body, and a second main connection terminal, which is connected to a second winding end of the winding is connected, the winding having partial windings and taps, by means of which the number of turns of the partial windings connected in series can be adjusted and which are each connected via a respective exit line extending in the insulating body to a respective tap connection terminal which is accessible from the outside, wherein the tapping terminals are formed on the post, each post being rotationally symmetrical and extending in a longitudinal direction.
Eine solche Wicklungseinheit ist aus der
Die
Weiterer Stand der Technik ist in der
Dem Fachmann ist aus der Praxis eine Wicklungseinheit bekannt, die in
Eine obere Hauptanschlussklemme 19 ist am freien Ende eines am Harzblock 11 angeformten Stützers 1 erkennbar. Eine untere Hauptanschlussklemme 20 ist entsprechend am freien Ende eines ebenfalls am Harzblock 11 angeformten Stützers 2 ausgebildet. Um die Hauptanschlussklemmen 19 und 20 miteinander zu verbinden, müssen zwei Anzapfungsanschlussklemmen miteinander verbunden werden. Durch Verbindung der Anzapfungsanschlussklemmen 5 und 6 ist die Anzahl der in Reihe geschalteten Windungen der Oberspannungswicklung 12 am größten. Eine Verbindung der Anzapfungsanschlussklemmen 4 und 7 führt zu einer Reihenschaltung einer mittleren Anzahl von Windungen, wohingegen eine Verbindung der Anzapfungsanschlussklemmen 3 und 8 zu einer Reihenschaltung von Windungen führt, deren Anzahl vergleichsweise am kleinsten ist.An upper
In
Der vorbekannten Wicklungseinheit haftet der Nachteil an, dass die mittig im Harzblock verlaufenden Ausleitungen 15, 16 und 18 es verhindern, dass die Oberspannungswicklung von einem Abschirmungskäfig vollumfänglich umschlossen werden kann. Der Abschirmungskäfig müsste zur Durchführung der Ausleitungen 15, 16 und 18 eine Öffnung aufweisen, wodurch die Wirkung der Abschirmung aufgehoben würde.The previously known winding unit has the disadvantage that the
Aufgabe der Erfindung ist es, eine vorteilhafte Wicklungseinheit bereitzustellen, die es ermöglicht, die Oberspannung im Harzblock vollumfänglich durch einen Abschirmungskäfig zu kapseln.The object of the invention is to provide an advantageous winding unit that makes it possible to completely encapsulate the upper voltage in the resin block by means of a shielding cage.
Die Erfindung löst diese Aufgabe durch die Wicklungseinheit gemäss Anspruch 1, mit dem dort genannten kennzeichnenden Teil.The invention solves this problem by the winding unit according to claim 1, with the characterizing part mentioned there.
Im Gegensatz zu der aus dem Stand der Technik nach
Ferner ist der Stützer erfindungsgemäß rotationssymmetrisch ausgebildet und über seinen radialen Umfang mit sich radial zur Längsrichtung erstreckenden Rippen ausgerüstet, wobei sich der Stützer in der Längsrichtung erstreckt und die Anzapfungsanschlussklemmen zwischen zwei der Rippen über den Umfang des jeweiligen Stützers gleichmäßig verteilt angeordnet sind. Gemäß der Erfindung sind Rippen am Stützer vorgesehen, um den Weg für Kriechströme zu vergrößern und diese möglichst vollständig zu unterdrücken. Kriechströme sind unerwünscht, da diese die Spannungsfestigkeit des Isolierkörpers beeinträchtigen können.Furthermore, the support according to the invention is rotationally symmetrical and equipped over its radial circumference with ribs extending radially to the longitudinal direction, the support extending in the longitudinal direction and the tapping terminals between two of the ribs being distributed uniformly over the circumference of the respective support. According to the invention, ribs are provided on the support in order to increase the path for leakage currents and to suppress them as completely as possible. Leakage currents are undesirable because they can impair the dielectric strength of the insulating body.
Erfindungsgemäß ist die erste Hauptanschlussklemme am freien längsseitigen Ende des Stützers ausgebildet.According to the invention, the first main connection terminal is formed on the free longitudinal end of the support.
Vorteilhafterweise ist die erste Windung der Oberspannungswicklung, über eine sich durch die gesamte Länge des Stützers hindurch erstreckende Ausleitung mit der Hauptanschlussklemme verbunden.Advantageously, the first turn of the high-voltage winding is connected to the main connection terminal via a branch line that extends through the entire length of the insulator.
Bei einer Ausgestaltung der Erfindung sind die Anzapfungsanschlussklemmen zum Isolierkörper hin versetzt angeordnet und weisen daher einen Abstand zur ersten Hauptanschlussklemme auf.In one embodiment of the invention, the tapping connection terminals are arranged offset toward the insulating body and are therefore at a distance from the first main connection terminal.
Alle Anzapfungsanschlussklemmen sind zwischen zwei Rippen auf der gleichen Höhe angeordnet und über wenigstens eine Rippe von der ersten Hauptanschlussklemme beabstandet.All tap terminals are arranged between two ribs at the same height and spaced from the first main terminal by at least one rib.
Hierbei ist es zweckmäßig, dass die Anzahl der Windungen zwischen der ersten stirnseitigen Windung der Wicklung und den Anzapfungen möglichst klein ist. Ansonsten wäre der Potenzialunterschied zwischen der ersten Hauptanschlussklemme und den Anzapfungsanschlussklemmen am Stützer zu groß, als dass diese gemeinsam an einem Stützer angeordnet und durch lediglich eine Rippe voneinander beabstandet sind.It is expedient here for the number of turns between the first end-side turn of the winding and the taps to be as small as possible. Otherwise the potential difference between the first main connection terminal and the tap terminals on the post are too large to be co-located on a post and spaced apart by only one rib.
Vorteilhafterweise liegt die Anzahl der Windungen der ersten Teilwicklung, deren oberste stirnseitige Windung mit der ersten Hauptanschlussklemme verbunden ist und deren letzte Windung mit einer Anzapfungsanschlussklemme am Stützer verbunden ist, zwischen 1 und 20, wohingegen die Anzahl der Windungen der zweiten Teilwicklung, deren erste stirnseitige Windung mit einer Anzapfungsanschlussklemme verbunden ist und deren letzte Windung mit der zweiten Hauptanschlussklemme verbunden ist.Advantageously, the number of turns of the first partial winding, the topmost frontal turn of which is connected to the first main connection terminal and the last turn of which is connected to a tapping connection terminal on the insulator, is between 1 and 20, whereas the number of turns of the second partial winding, the first frontal turn of which is connected is connected to a tap terminal and the last turn of which is connected to the second main terminal.
Zweckmäßigerweise ist ein zweiter Stützer vorgesehen, der sich vom Wicklungskörper zu seinem freien Ende hin erstreckt, wobei die zweite Hauptanschlussklemme am freien Ende des zweiten Stützers ausgebildet ist. Gemäß dieser vorteilhaften Weiterentwicklung sind zwei Hauptanschlussklemmen vorgesehen, die jeweils am freien Ende eines Stützers angeordnet sind. Zwischen den Anschlussklemmen kann durch Überbrücken der zweckmäßig ausgewählten Anzapfungsanschlussklemmen die Anzahl der zwischen der ersten und zweiten Hauptanschlussklemme liegenden Windungen und somit die Spannung eingestellt werden.A second support is expediently provided, which extends from the winding body to its free end, with the second main connection terminal being formed at the free end of the second support. According to this advantageous further development, two main connection terminals are provided, each of which is arranged at the free end of a support. The number of turns lying between the first and second main connection terminal and thus the voltage can be set between the connection terminals by bridging the appropriately selected tap connection terminals.
Gemäß einer diesbezüglich zweckmäßigen Weiterentwicklung weist auch der zweite Stützer Rippen auf. Auch hierbei dienen die Rippen der Vergrößerung des Kriechweges und somit der Erhöhung der Spannungsfestigkeit der Wicklungseinheit.According to an expedient further development in this regard, the second support also has ribs. Here, too, the ribs serve to increase the creepage distance and thus increase the dielectric strength of the winding unit.
Vorteilhafterweise bestehen der Isolierkörper und jeder Stützer aus einem ausgehärteten Harz. Als zweckmäßiger Harz kommt hier Epoxydharz in Betracht, wobei dem Harz zweckmäßige Zusätze zum Aushärten zugefügt sind. Isolierkörper aus Harz sind dem Fachmann jedoch bekannt, so dass an dieser Stelle auf detailliertere Ausführungen hierzu verzichtet werden kann.Advantageously, the insulating body and each post are made of a cured resin. Epoxy resin comes into consideration here as an expedient resin, with expedient additives being added to the resin for curing. However, insulating bodies made of resin are known to a person skilled in the art, so that detailed explanations on this can be dispensed with at this point.
Gemäß einer bevorzugten Ausgestaltung der Erfindung ist eine am Stützer gehaltene flexible Abdeckkappe vorgesehen, die dem Schutz der Anzapfungsanschlussklemmen dient. Die Kappe ist beispielsweise aus einem flexiblen Elastomer hergestellt und dient zum Abhalten von Schmutz, Regenwasser oder dergleichen. Aufgrund der Flexibilität der Abdeckkappe kann diese über die jeweiligen Rippen des Stützers gegebenenfalls über die Anzapfungsanschlussklemmen gestülpt werden.According to a preferred embodiment of the invention, a flexible covering cap is provided which is held on the support and serves to protect the tap connection terminals. The cap is made of a flexible elastomer, for example, and is used to keep dirt, rainwater or the like out. Because of the flexibility of the cover cap, it can be slipped over the respective ribs of the support, if necessary, over the tap connection terminals.
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
- Figuren 1 und 2
- eine Wicklungseinheit gemäß dem Stand der Technik in einer Stirnansicht bzw. in einer geschnittenen Seitenansicht,
Figuren 3 und 4- eine Wicklungseinheit gemäß der vorliegenden Erfindung in einer Stirnansicht bzw. in einer geschnittenen Seitenansicht,
Figuren 5 und 6 StütWicklungseinheit- ein Ausführungsbeispiel des zers der erfindungsgemässen in einer geschnittenen Seitenbzw. Queransicht und
Figur 7- ein Ausführungsbeispiel der erfindungsgemäßen Wicklungseinheit, die in einer perspektivischen Ansicht verdeutlichen.
- Figures 1 and 2
- a winding unit according to the prior art in a front view or in a sectional side view,
- Figures 3 and 4
- a winding unit according to the present invention in a front view or in a sectional side view,
- Figures 5 and 6 support winding unit
- an embodiment of the Zers of the invention in a cut Seitenbzw. transverse view and
- figure 7
- an embodiment of the winding unit according to the invention, which illustrate in a perspective view.
Die in den
Darüber hinaus unterscheiden sich die Teilwicklungen 13, 14 hinsichtlich der Anzahl der Windungen. Während bei der Wicklungseinheit 11 gemäß
In
Auch der Stützer 2, an dessen freiem Ende sich die zweiten Hauptanschlussklemme 20 befindet, ist mit Außenrippen 22 ausgerüstet.The
In
Claims (5)
- Winding unit (10) for connection to a high-voltage grid, having- a winding (12) that is embedded in a solid insulating body (11) of the winding unit,- a first main connection terminal (19) that is connected to a first winding end of the winding (12) and is arranged on a first support (1) that is formed on the insulating body (11), and- a second main connection terminal (20) that is connected to a second winding end of the winding (12),- wherein the winding comprises partial windings (13, 14) and taps (17), by means of which the number of series-connected turns of the partial windings (13, 14) can be adjusted, and which are respectively connected, by means of a respective outgoing line (15, 16, 18) that extends in the insulating body (11), to a respective tap connection terminal (3, 4, 5, 6, 7, 8) that is accessible from the exterior, wherein the tap connection terminals (3, 4, 5, 6, 7, 8) are formed on the support (1),- wherein the support (1) has a rotationally symmetrical configuration and extends in a longitudinal direction,characterized in that
the support is equipped, over the radial periphery thereof, with ribs (22, 23, 24, 25) extending radially with respect to the longitudinal direction, wherein the first main connection terminal (12) is formed on the free longitudinal-side end of the support (1) that is remote from the insulating body (11), and wherein the tap connection terminals (3, 4, 5, 6, 7, 8) are arranged between two of the ribs (24, 25) in an evenly-distributed manner over the radial periphery of said support (1) . - Winding unit (10) according to the preceding claim,
characterized in that
a second support (2) of the winding unit is provided, which extends from the insulating body (11) towards the free end thereof, wherein the second main connection terminal (20) is formed at the free end of the second support (2). - Winding unit (10) according to Claim 2,
characterized in that
the second support (2) comprises ribs (22). - Winding unit (10) according to one of the preceding claims,
characterized in that
the insulating body (11) and each support (1, 2) mentioned are manufactured from a cured resin. - Winding unit (10) according to one of the preceding claims,
characterized in that
a flexible cap, which is held on the support (1), of the winding unit is used to protect the tap connection terminals (3, 4, 5, 6, 7, 8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017220779.5A DE102017220779A1 (en) | 2017-11-21 | 2017-11-21 | Winding unit with trained on Supporters taps |
PCT/EP2018/079127 WO2019101460A1 (en) | 2017-11-21 | 2018-10-24 | Winding unit having taps formed on the support |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3685413A1 EP3685413A1 (en) | 2020-07-29 |
EP3685413B1 true EP3685413B1 (en) | 2023-05-31 |
Family
ID=64270810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18800503.7A Active EP3685413B1 (en) | 2017-11-21 | 2018-10-24 | Winding unit with tappings formed on the support |
Country Status (8)
Country | Link |
---|---|
US (1) | US11557424B2 (en) |
EP (1) | EP3685413B1 (en) |
CN (1) | CN111373497B (en) |
BR (1) | BR112020009328B1 (en) |
CA (1) | CA3083142C (en) |
DE (1) | DE102017220779A1 (en) |
MX (1) | MX2020005122A (en) |
WO (1) | WO2019101460A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112216493A (en) * | 2020-09-27 | 2021-01-12 | 山东电力设备有限公司 | Lead-out structure of large-current multi-tap coil |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2431244A (en) * | 1946-06-08 | 1947-11-18 | Westinghouse Electric Corp | High-voltage metering apparatus |
DE878406C (en) * | 1950-09-13 | 1953-06-01 | Friedrich Raupach | High-voltage dry transformer, especially two-pole isolated voltage transformer |
AT181318B (en) * | 1952-04-24 | 1955-03-10 | Moser Glaser & Co Ag | High-voltage dry-type transformer with a rod-shaped, magnetizable core |
DE2640595B2 (en) * | 1976-09-09 | 1980-11-20 | Transformatoren Union Ag, 7000 Stuttgart | Winding arrangement for a transformer with a high-voltage winding cast in a synthetic resin block |
US4159457A (en) * | 1977-10-25 | 1979-06-26 | Burroughs Corporation | Low voltage high current transformer |
JP4509544B2 (en) * | 2003-01-21 | 2010-07-21 | 和夫 河野 | Wire wound transformer and power supply device using the wire wound transformer |
DE102006041501B4 (en) * | 2006-08-31 | 2008-10-30 | Cbp Guideway Systems Gmbh | Insulator for the electrically insulated attachment of a busbar to a fastening element, in particular to a bending weir of a magnetic levitation railway |
CN101350247B (en) * | 2007-07-18 | 2010-09-08 | 大连北方互感器有限公司 | Outdoor dry-type voltage transformer for electric locomotive |
BRPI1101495B1 (en) * | 2011-04-15 | 2020-09-24 | Siemens Aktiengesellschaft | Three-phase or single-phase dry distribution transformer and electrical isolation method for a tap panel of a three-phase or single-phase dry distribution transformer |
US20130043966A1 (en) * | 2011-08-15 | 2013-02-21 | Abb Technology Ag | Transformer tap projection and cover |
CN202205531U (en) * | 2011-08-15 | 2012-04-25 | 大连北方互感器集团有限公司 | Single-phase tapped outdoor discharge coil |
KR101693021B1 (en) * | 2015-04-09 | 2017-01-05 | (주)대림엠이씨 | Insulating cover for bushing terminal |
-
2017
- 2017-11-21 DE DE102017220779.5A patent/DE102017220779A1/en not_active Ceased
-
2018
- 2018-10-24 BR BR112020009328-9A patent/BR112020009328B1/en active IP Right Grant
- 2018-10-24 CN CN201880074849.XA patent/CN111373497B/en active Active
- 2018-10-24 CA CA3083142A patent/CA3083142C/en active Active
- 2018-10-24 US US16/765,945 patent/US11557424B2/en active Active
- 2018-10-24 MX MX2020005122A patent/MX2020005122A/en unknown
- 2018-10-24 EP EP18800503.7A patent/EP3685413B1/en active Active
- 2018-10-24 WO PCT/EP2018/079127 patent/WO2019101460A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102017220779A1 (en) | 2019-05-23 |
CN111373497A (en) | 2020-07-03 |
BR112020009328A2 (en) | 2020-10-27 |
CA3083142A1 (en) | 2019-05-31 |
US11557424B2 (en) | 2023-01-17 |
CA3083142C (en) | 2023-03-14 |
WO2019101460A1 (en) | 2019-05-31 |
EP3685413A1 (en) | 2020-07-29 |
BR112020009328A8 (en) | 2023-02-07 |
US20200357566A1 (en) | 2020-11-12 |
BR112020009328B1 (en) | 2024-03-12 |
CN111373497B (en) | 2023-07-21 |
MX2020005122A (en) | 2020-11-06 |
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