EP2958110B1 - Messwandlerwicklung und Messwandler - Google Patents

Messwandlerwicklung und Messwandler Download PDF

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Publication number
EP2958110B1
EP2958110B1 EP14172533.3A EP14172533A EP2958110B1 EP 2958110 B1 EP2958110 B1 EP 2958110B1 EP 14172533 A EP14172533 A EP 14172533A EP 2958110 B1 EP2958110 B1 EP 2958110B1
Authority
EP
European Patent Office
Prior art keywords
winding
transducer
measuring transducer
fullerene
measurement converter
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
EP14172533.3A
Other languages
English (en)
French (fr)
Other versions
EP2958110A1 (de
Inventor
Hans-Peter Dambietz
Udo Prucker
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP14172533.3A priority Critical patent/EP2958110B1/de
Priority to ES14172533T priority patent/ES2703059T3/es
Publication of EP2958110A1 publication Critical patent/EP2958110A1/de
Application granted granted Critical
Publication of EP2958110B1 publication Critical patent/EP2958110B1/de
Priority to HRP20182142TT priority patent/HRP20182142T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium

Definitions

  • the invention relates to a transducer winding of a transducer and a transducer.
  • the invention relates to transducers designed as voltage transformers.
  • Voltage transformers are available in single-pole or three-pole encapsulated versions, which are equipped with protective and measuring windings.
  • a voltage converter has a high-voltage winding and one or more secondary windings for measurement and protection purposes.
  • the high-voltage windings of voltage transformers are so far wound with very thin copper wires. Due to the winding speed during the high voltage winding manufacturing process, the thickness of the wires is determined not by the current carrying capability but mainly by the required mechanical strength.
  • the invention relates to trained as a current transformer transducers. Current transformer cores are usually wound with copper wires.
  • EP2728586A1 describes a flexible electrically conductive material which consists of an aluminum alloy.
  • the aluminum alloy contains fullerene in a proportion of 0.1% by mass% up to 20% by mass. The material is used in cables.
  • the invention has for its object to provide a particularly improved in terms of material costs transducer winding of a transducer and a correspondingly improved transducer.
  • the object is achieved according to the invention with respect to the transducer winding by the features of claim 1 and in terms of the transducer solved by the features of claim 5.
  • a transducer winding of a transducer according to the invention is made of an aluminum alloy containing at least one fullerene.
  • aluminum wire is mainly used for manufacturing reasons not for high voltage windings of voltage transformers, because of the high winding speed during the manufacturing process of a transducer winding thin wires would tear from the relatively brittle aluminum material. If you were to use conventional aluminum wire to produce a transducer winding, you would have to use due to the low tensile strength of aluminum wire, which is much thicker than copper wire and therefore would significantly increase the space requirement for the transducer winding.
  • the invention provides to reinforce aluminum by alloying with at least one fullerene and to use for the manufacture of a transducer winding.
  • Aluminum alloys with a low fullerene content have very good strength properties, so that the production speeds can be maintained when winding transducer coils, without unacceptably increasing the wire thickness compared to copper wire in order to prevent the wire from tearing in the manufacturing process.
  • the material copper used so far can be advantageously replaced by a much more favorable material, which has a similar good electrical conductivity as copper and also allows the production of transducer windings with very small wire thicknesses.
  • Preferred embodiments of the invention provide that the aluminum alloy contains the fullerene C 60 or / and the fullerene C 70 .
  • the fullerenes C 60 and C 70 are particularly advantageous as components of the aluminum alloy, since they particularly enhance the strength properties of the aluminum alloy and also increase the electrical conductivity compared to pure aluminum.
  • a further embodiment of the invention provides that a mass fraction of the at least one fullerene on the aluminum alloy is between 1% and 3%.
  • a mass fraction of fullerenes between 1% and 3% of the aluminum alloy is preferred because it has proven to be particularly advantageous for achieving the required strength properties of the aluminum alloy.
  • a transducer according to the invention has at least one transducer winding according to the invention.
  • At least one transducer winding of the transducer according to the invention is a high-voltage winding.
  • a further embodiment of a transducer according to the invention provides that at least one secondary winding of the Measuring transducer is designed as a transducer winding according to the invention.
  • This embodiment also advantageously leads to a reduction in the cost of manufacturing a transducer due to the reduction of material costs, when secondary windings are made of an aluminum alloy according to the invention instead of copper.
  • the conductivity improvement of the aluminum alloy by fullerenes has a particularly advantageous effect, since it makes it possible to reduce the thickness of the secondary winding wires in comparison to pure aluminum.
  • an aluminum alloy according to the invention is particularly suitable as material for secondary windings of current transformers.
  • An inventive transducer can accordingly be designed as a voltage converter or as a current transformer.

Landscapes

  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Coils Of Transformers For General Uses (AREA)

Description

  • Die Erfindung betrifft eine Messwandlerwicklung eines Messwandlers und einen Messwandler.
    Insbesondere betrifft die Erfindung als Spannungswandler ausgebildete Messwandler. Spannungswandler gibt es in einpolig oder auch dreipolig gekapselter Ausführung, welche mit Schutz- und Messwicklungen ausgestattet sind. Je nach Ausführung besitzt ein Spannungswandler eine Hochspannungswicklung und eine oder mehrere Sekundärwicklungen zu Mess- und Schutzzwecken. Die Hochspannungswicklungen von Spannungswandlern werden bisher mit sehr dünnen Kupferdrähten gewickelt. Aufgrund der Wickelgeschwindigkeit während des Fertigungsprozesses der Hochspannungswicklung wird die Dicke der Drähte nicht durch die Stromtragefähigkeit sondern hauptsächlich durch die benötigte mechanische Festigkeit bestimmt. Zur Fertigung der Hochspannungswicklung verwendet man einen möglichst dünnen Draht, um den Platzbedarf für die hohe Windungszahl der Wicklung gering zu halten. Kupfer wird aufgrund seiner hohen elektrischen Leitfähigkeit und seiner guten mechanischen Verarbeitbarkeit, insbesondere seiner hohen Reißfestigkeit, als Material für Messwandlerwicklungen gewählt. Ferner betrifft die Erfindung als Stromwandler ausgebildete Messwandler. Auch Stromwandlerkerne werden in der Regel mit Kupferdrähten bewickelt.
  • EP2728586A1 beschreibt ein flexibles elektrisch leitfähiges Material, welches aus einer Aluminiumlegierung besteht. Die Aluminiumlegierung enthält Fulleren in einem Anteil von 0,1 Massenprozent% bis zu 20 Massenprozent. Das Material wird in Kabeln verwendet.
  • Der Erfindung liegt die Aufgabe zugrunde, eine insbesondere hinsichtlich der Materialkosten verbesserte Messwandlerwicklung eines Messwandlers und einen dementsprechend verbesserten Messwandler anzugeben.
    Die Aufgabe wird erfindungsgemäß hinsichtlich der Messwandlerwicklung durch die Merkmale des Anspruchs 1 und hinsichtlich des Messwandlers durch die Merkmale des Anspruchs 5 gelöst.
  • Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.
  • Eine erfindungsgemäße Messwandlerwicklung eines Messwandlers ist aus einer Aluminiumlegierung, welche wenigstens ein Fulleren enthält, gefertigt.
  • Bisher wird Aluminiumdraht aus hauptsächlich fertigungstechnischen Gründen nicht für Hochspannungswicklungen von Spannungswandlern verwendet, da wegen der hohen Wickelgeschwindigkeit während des Fertigungsprozesses einer Messwandlerwicklung dünne Drähte aus dem relativ spröden Aluminiummaterial reißen würden. Würde man herkömmlichen Aluminiumdraht zur Herstellung einer Messwandlerwicklung verwenden, müsste man aufgrund der geringen Reißfestigkeit von Aluminium Draht verwenden, der wesentlich dicker als Kupferdraht ist und daher den Bauraumbedarf für die Messwandlerwicklung wesentlich erhöhen würde. Die Erfindung sieht vor, Aluminium durch Legieren mit wenigstens einem Fulleren zu verstärken und zur Fertigung einer Messwandlerwicklung zu verwenden. Aluminiumlegierungen mit einem geringen Fullerenanteil weisen sehr gute Festigkeitseigenschaften auf, so dass die Fertigungsgeschwindigkeiten beim Wickeln von Messwandlerspulen eingehalten werden können, ohne die Drahtdicke gegenüber Kupferdraht unakzeptabel erhöhen zu müssen, um ein Reißen des Drahtes bei dem Fertigungsprozess zu verhindern. Das bisher verwendete Material Kupfer kann damit vorteilhaft durch ein sehr viel günstigeres Material ersetzt werden, das eine ähnlich gute elektrische Leitfähigkeit wie Kupfer aufweist und ebenfalls die Fertigung von Messwandlerwicklungen mit sehr geringen Drahtdicken ermöglicht.
  • Bevorzugte Ausgestaltungen der Erfindung sehen vor, dass die Aluminiumlegierung das Fulleren C60 oder/und das Fulleren C70 enthält.
  • Die Fullerene C60 und C70 eignen sich besonders vorteilhaft als Bestandteile der Aluminiumlegierung, da sie die Festigkeitseigenschaften der Aluminiumlegierung besonders gut verstärken und außerdem die elektrische Leitfähigkeit gegenüber reinem Aluminium erhöhen.
  • Eine weitere Ausgestaltung der Erfindung sieht vor, dass ein Massenanteil des wenigstens einen Fullerens an der Aluminiumlegierung zwischen 1 % und 3 % beträgt.
  • Ein Massenanteil von Fullerenen zwischen 1 % und 3 % an der Aluminiumlegierung wird bevorzugt, da er sich als besonders vorteilhaft zur Erreichung der erforderlichen Festigkeitseigenschaften der Aluminiumlegierung erwiesen hat.
  • Ein erfindungsgemäßer Messwandler weist wenigstens eine erfindungsgemäße Messwandlerwicklung auf.
  • Die oben bereits genannte Kostenersparnis durch die Verwendung einer erfindungsgemäßen Aluminiumlegierung anstelle von Kupfer als Material einer Messwandlerwicklung führt vorteilhaft zu einer entsprechenden Reduzierung der Herstellungskosten eines erfindungsgemäßen Messwandlers.
  • Vorzugsweise ist dabei wenigstens eine erfindungsgemäße Messwandlerwicklung des Messwandlers eine Hochspannungswicklung.
  • Die Realisierung einer Hochspannungswicklung eines Spannungswandlers als eine erfindungsgemäße Messwandlerwicklung ist besonders vorteilhaft, da aufgrund der hohen Windungszahlen von Hochspannungswicklungen hier die Materialkosteneinsparung durch die Verwendung einer erfindungsgemäßen Aluminiumlegierung anstelle von Kupfer in besonderem Maß zum Tragen kommt.
  • Eine weitere Ausgestaltung eines erfindungsgemäßen Messwandlers sieht vor, dass wenigstens eine Sekundärwicklung des Messwandlers als eine erfindungsgemäße Messwandlerwicklung ausgebildet ist.
  • Auch diese Ausgestaltung führt vorteilhaft zu einer Kostensenkung der Herstellung eines Messwandlers aufgrund der Reduzierung der Materialkosten, wenn Sekundärwicklungen aus einer erfindungsgemäßen Aluminiumlegierung statt aus Kupfer gefertigt werden. Dabei wirkt sich die Leitfähigkeitsverbesserung der Aluminiumlegierung durch Fullerene besonders vorteilhaft aus, da sie es ermöglicht, die Dicke der Sekundärwicklungsdrähte im Vergleich zu reinem Aluminium zu reduzieren. Dadurch eignet sich eine erfindungsgemäße Aluminiumlegierung insbesondere auch als Material für Sekundärwicklungen von Stromwandlern.
  • Ein erfindungsgemäßer Messwandler kann dementsprechend als ein Spannungswandler oder als ein Stromwandler ausgebildet sein.

Claims (9)

  1. Messwandlerwicklung eines Messwandlers, die aus einer Aluminiumlegierung, welche wenigstens ein Fulleren enthält, gefertigt ist.
  2. Messwandlerwicklung nach Anspruch 1,
    dadurch gekennzeichnet, dass die Aluminiumlegierung das Fulleren C60 enthält.
  3. Messwandlerwicklung nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Aluminiumlegierung das Fulleren C70 enthält.
  4. Messwandlerwicklung nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass ein Massenanteil des wenigstens einen Fullerens an der Aluminiumlegierung zwischen 1 % und 3 % beträgt.
  5. Messwandler mit wenigstens einer Messwandlerwicklung gemäß einem der vorhergehenden Ansprüche.
  6. Messwandler nach Anspruch 5,
    dadurch gekennzeichnet, dass wenigstens eine Messwandlerwicklung gemäß einem der Ansprüche 1 bis 4 eine Hochspannungswicklung ist.
  7. Messwandler nach Anspruch 5 oder 6,
    dadurch gekennzeichnet, dass wenigstens eine Messwandlerwicklung nach einem der Ansprüche 1 bis 4 eine Sekundärwicklung ist.
  8. Messwandler nach einem der Ansprüche 5 bis 7,
    dadurch gekennzeichnet, dass der Messwandler als ein Spannungswandler ausgebildet ist.
  9. Messwandler nach einem der Ansprüche 5 bis 7,
    dadurch gekennzeichnet, dass der Messwandler als ein Stromwandler ausgebildet ist.
EP14172533.3A 2014-06-16 2014-06-16 Messwandlerwicklung und Messwandler Active EP2958110B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14172533.3A EP2958110B1 (de) 2014-06-16 2014-06-16 Messwandlerwicklung und Messwandler
ES14172533T ES2703059T3 (es) 2014-06-16 2014-06-16 Devanado de transductor para medición y transductor para medición
HRP20182142TT HRP20182142T1 (hr) 2014-06-16 2018-12-18 Zavojnica mjernog pretvarača i mjerni pretvarač

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14172533.3A EP2958110B1 (de) 2014-06-16 2014-06-16 Messwandlerwicklung und Messwandler

Publications (2)

Publication Number Publication Date
EP2958110A1 EP2958110A1 (de) 2015-12-23
EP2958110B1 true EP2958110B1 (de) 2018-09-26

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ID=50972513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14172533.3A Active EP2958110B1 (de) 2014-06-16 2014-06-16 Messwandlerwicklung und Messwandler

Country Status (3)

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EP (1) EP2958110B1 (de)
ES (1) ES2703059T3 (de)
HR (1) HRP20182142T1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053027A1 (de) * 2008-10-24 2010-04-29 Kme Germany Ag & Co. Kg Verfahren zum Herstellen einer Kohlenstoff-Nanoröhren,Fullerene und/oder Graphene enthaltenden Beschichtung
EP2728586B1 (de) * 2011-06-30 2017-04-19 Dyden Corporation Flexibles leitfähiges material und kabel, das dieses verwendet
DE102011085408A1 (de) * 2011-10-28 2013-05-02 Endress + Hauser Flowtec Ag Meßwandler sowie damit gebildetes Meßsystem

Also Published As

Publication number Publication date
ES2703059T3 (es) 2019-03-06
EP2958110A1 (de) 2015-12-23
HRP20182142T1 (hr) 2019-02-08

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