EP2351056A1 - Barrier arrangement for a cable duct - Google Patents

Barrier arrangement for a cable duct

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Publication number
EP2351056A1
EP2351056A1 EP08875066A EP08875066A EP2351056A1 EP 2351056 A1 EP2351056 A1 EP 2351056A1 EP 08875066 A EP08875066 A EP 08875066A EP 08875066 A EP08875066 A EP 08875066A EP 2351056 A1 EP2351056 A1 EP 2351056A1
Authority
EP
European Patent Office
Prior art keywords
barrier
arrangement
barrier arrangement
elements
additional radial
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
EP08875066A
Other languages
German (de)
French (fr)
Other versions
EP2351056B1 (en
Inventor
Ronny Fritsche
Peter Heinzig
Jens Hoppe
Dietmar Jahnel
Johann Schlager
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2351056A1 publication Critical patent/EP2351056A1/en
Application granted granted Critical
Publication of EP2351056B1 publication Critical patent/EP2351056B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
    • 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
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens

Definitions

  • the invention relates to a barrier arrangement for a lungs fürbowung with juxtaposed barriers, which are arranged at predetermined distances from each other.
  • Shielding electrode which is integrated into the barrier system, electrically shielded from each other.
  • DE 10 2005 021 255 B4 describes a barrier system for a line feedthrough of an electrical system, in which the individual barriers in the form of plug-in elements are plugged into each other.
  • This connection system is preferably located in a grounded dome, which is attached to the lid or on a side wall of the electrical system, in particular the transformer or throttle boiler.
  • the shielding electrode has a paper insulation, which ensures a corresponding electrical shielding.
  • the length of the barriers can be up to 3,000mm with a diameter of up to 1,500mm.
  • the thickness of the barriers is between 3mm and 5mm.
  • the object of the present invention is therefore to increase the electric strength between the Kirs Struc and the barrier arrangement.
  • a barrier arrangement according to the features of claim 1. According to the invention, it is provided between the barrier arrangement and the line soubuchung at least one barrier element to form an additional radial Olumble is arranged.
  • an additional radial radial oil path is understood as a radial circulation system formed by at least one almost rotationally symmetrical barrier element, wherein within the additional radial oil path the oil can circulate in the radial and axial direction as cooling and insulating medium.
  • barriers are integral segments which can also be connected to one another and, if appropriate, also pushed into one another and thus form a barrier system, as disclosed, for example, in DE 10 2005 021 255 B4.
  • barrier elements form additional radial oil paths.
  • the barrier arrangement is provided that the additional Olumblen have a comparison with the Olumblen the barriers reduced distance.
  • the barrier element comprises pressboard.
  • a plurality of barrier elements are arranged at virtually constant distances from the line leadthrough and / or relative to one another.
  • the distances of the additional radial oil paths may vary, in particular a smaller distance in the lower region of the barrier elements is advantageous in comparison to the distance in the upper region, since in this way the permissible field strengths can be increased in the lower region.
  • the Kirs handbuchung is formed as a funnel or cone, which can be additionally formed at the lower end by a cylindrical termination.
  • the shape of the barrier elements can be adapted to the respective electrical or structural conditions as a whole or as regards individual barrier elements.
  • an axial extension of the barrier elements beyond the upper part of the electrode is advantageous in the case of a DC voltage applied to the electrode.
  • the barrier element can advantageously be fastened to the outer barrier arrangement or to the leadthrough and is radially spaced apart from the electrode with spacers.
  • the Krafts slideatung serves in particular as a discharge to a transformer and / or to a choke coil.
  • the barrier arrangement is advantageously configured as a test barrier arrangement. These test barrier arrangements differ from the arrangement used in a transformer or in a choke coil only in the lower region of the electrode arrangement and can be used for the high-voltage tests of line feedthroughs. Further advantageous embodiments emerge from the subclaims. The object of the invention will be explained by means of the following figures. It shows
  • Fig. 1 shows a partial section of a discharge as
  • Fig. 2 shows a partial section of a discharge as
  • Fig. 3 shows a partial section of a discharge as
  • Fig. 1 shows a section of a discharge 1, wherein the representation of Fig. 1 is a sectional drawing through a rotationally symmetrical design discharge 1 and posted the axial axis of rotation 6 only the right part as a portion of the discharge line 1 in FIG. Relative to Kirs notebooksmithung 3 of the transformer (not shown), the barrier assembly 2 is arranged.
  • the rotation-symmetrical barrier arrangement 2 comprises three barriers 7 a, 7 b, 7 c, which are arranged relative to the line lead-through 3.
  • a paper-insulated electrode 5 is part of the electrical shielding of the discharge line 1. Between the barrier arrangement 2 In the example shown in FIG.
  • the line bushing 3 has a barrier element 4a integrated therein, which forms an additional radial oil path 8a within the outlet 1 which is smaller than the conventional oil path, so that the permissible field strengths within the circulating oil can be increased.
  • the additional radial oil path 8a is formed by the barrier element 4a and the leadthrough 3.
  • FIG. 2 A partial section of an outlet 1 (not shown) as a sectional drawing with two rotationally symmetrical barrier elements 4a, 4b for the formation of two additional radial Olrown 8a, 8b between the Kirs pressbowung 3 and the electrode 5 is shown in FIG.
  • the illustration of FIG. 2 is a sectional view through a rotationally symmetrical outlet 1 with respect to the axial axis of rotation 6 and shows only a portion of the discharge line 1.
  • the first additional radial oil path 8a is formed by the arrangement of the first barrier element 4a relative to Kaus pressbuckung 3
  • the second additional radial oil path 8b is formed by the almost constant distance A between the first and the second barrier element 4a, 4b.
  • This barrier arrangement 2 allows the operation of higher electric field strengths by the formation of the additional radial Olrown 8a, 8b. Im shown
  • the barrier elements 4a, 4b have a straight shape and do not project beyond the electrode 5.
  • FIG. 3 shows a partial section of an outlet 1 (not shown) as a sectional drawing with three rotationally symmetrical barrier elements 4a, 4b, 4c for forming additional radial oil paths 8a, 8b, 8c between the cable feedthrough 3 and the electrode 5.
  • the additional radial oil paths 8a, 8b, 8c are due to the different shapes of the barrier elements 4a, 4b, 4c and their relative arrangement to each other different shapes and diameters.
  • the third additional radial oil path 8c in the lower part has a smaller diameter than in the upper part of the barrier elements 4a, 4b, 4c.
  • the barrier elements 4 a, 4 b, 4 c have an angled shape, which is designed parallel to the shape of the conduit 3 in the upper area.

Abstract

The invention relates to a barrier arrangement (2) for a cable duct (3) having barriers (7a, 7b, 7c) arranged next to each other and disposed at prescribed distances from each other. By introducing an additional barrier element (4a) between the cable duct and the barrier arrangement, an additional radial oil segment is created, so that the permissible field strengths within the oil can be thereby increased. This is advantageous, particularly when using the barrier arrangement for high voltages above 500 kV. Simultaneously, nearly identical barrier arrangements can be used for very different operating voltages, and need to be adjusted only with regard to the barrier elements and the constant spacing to the cable duct.

Description

Beschreibung description
Barrierenanordnung für eine LeitungsdurchführungBarrier arrangement for a cable feedthrough
Die Erfindung betrifft eine Barrierenanordnung für eine Lei- tungsdurchfuhrung mit nebeneinander angeordneten Barrieren, die in vorgebbaren Abstanden zueinander angeordnet sind.The invention relates to a barrier arrangement for a lungs durchfuhrung with juxtaposed barriers, which are arranged at predetermined distances from each other.
Elektrische Anlagen, insbesondere Transformatoren und Dros- seispulen, müssen beim Einsatz in Hochspannungsnetzen eine hohe elektrische Spannungsfestigkeit aufweisen. Insbesondere im Bereich der Kontaktierung der elektrischen Anlage mit einem äußeren Hochspannungsnetz ist eine ausreichende elektrische Isolierung mit hoher Spannungsfestigkeit in der so ge- nannten Ausleitung als unmittelbares Verbindungsglied zwischen der elektrischen Anlage und dem Hochspannungsnetz unumgänglich. Insbesondere für Hochspannungsgleichstrom (HGU) - Anwendungen sind aufwandige elektrische Isolationssysteme notwendig. Herkommlicherweise werden hierzu Barrierensysteme verwendet, die um die Leitung im Bereich der Ausleitung der elektrischen Anlage angeordnet sind, wobei innerhalb des Barrierensystems ein Kuhlmedium, insbesondere ein Transformator- ol, zur elektrischen Isolation und zur Kühlung zirkuliert.Electrical installations, in particular transformers and spiral coils, must have a high dielectric strength when used in high-voltage networks. In particular, in the area of contacting the electrical system with an external high-voltage network, sufficient electrical insulation with high dielectric strength in the so-called discharge as a direct connecting link between the electrical system and the high-voltage network is unavoidable. Especially for high-voltage direct current (HVDC) applications, costly electrical insulation systems are necessary. Traditionally, this barrier systems are used, which are arranged around the line in the area of the discharge of the electrical system, wherein within the barrier system, a Kuhlmedium, in particular a transformer oil, for electrical insulation and cooling circulates.
Aufgrund der hohen Spannungen ist eine elektrische Abschirmung zwischen der elektrischen Leitung des Hochspannungsnetzes und den Komponenten der elektrischen Anlage nur mittels eines mehrteiligen Barrierensystems möglich. Des Weiteren ist die Leitungsdurchfuhrung als Teil der elektrischen Anlage ge- genuber einer entsprechend korrespondierend angeordnetenDue to the high voltages, electrical shielding between the electrical line of the high-voltage network and the components of the electrical system is possible only by means of a multi-part barrier system. Furthermore, the cable feedthrough as part of the electrical system is arranged in a correspondingly corresponding manner
Schirmungselektrode, die in das Barrierensystem integriert ist, elektrisch gegeneinander abgeschirmt. So beschreibt beispielsweise die DE 10 2005 021 255 B4 ein Barrierensystem für eine Leitungsdurchfuhrung einer elektrischen Anlage, bei der die einzelnen Barrieren in Form von Steckelementen ineinander steckbar sind.Shielding electrode, which is integrated into the barrier system, electrically shielded from each other. For example, DE 10 2005 021 255 B4 describes a barrier system for a line feedthrough of an electrical system, in which the individual barriers in the form of plug-in elements are plugged into each other.
Dieses Verbindungssystem befindet sich vorzugsweise in einem geerdeten Dom, der am Deckel oder an einer Seitenwand der elektrischen Anlage, insbesondere des Transformator- oder Drosselkessels, angebracht ist. Des Weiteren weist die Schirmungselektrode eine Papierisolation auf, die eine entsprechende elektrische Abschirmung gewahrleistet. Innerhalb des Barrierensystems muss eine exakte Lage der Barrieren gewahrleistet werden, wobei zum Teil 15 bis 25 Barrieren ein entsprechendes Barrierensystem bilden. Die Lange der Barrieren kann dabei bis zu 3.000mm bei einem Durchmesser von bis zu 1.500mm betragen. Die Dicke der Barrieren liegt zwischen 3mm und 5mm.This connection system is preferably located in a grounded dome, which is attached to the lid or on a side wall of the electrical system, in particular the transformer or throttle boiler. Furthermore, the shielding electrode has a paper insulation, which ensures a corresponding electrical shielding. Within the barrier system, an exact position of the barriers must be ensured, whereby in some cases 15 to 25 barriers form a corresponding barrier system. The length of the barriers can be up to 3,000mm with a diameter of up to 1,500mm. The thickness of the barriers is between 3mm and 5mm.
Insbesondere aufgrund der steigenden Anforderungen hinsichtlich der Spannungsebenen von derzeit bis zu 80OkV und den daraus resultierenden hohen PrüfSpannungen werden bei wenig veränderten Anordnungen der Leitungsdurchfuhrungen und desIn particular, due to the increasing requirements in terms of voltage levels of currently up to 80OkV and the resulting high test voltages are in little changed arrangements of Leitungsdurchfuhrungen and the
Barrierensystems die Olfeidstarken, insbesondere an der Oberflache der Leitungsdurchfuhrungen, immer großer. Zur Erfüllung der elektrischen Auslegungsbedingungen sind daher die Olspalte, insbesondere zwischen der Leitungsdurchfuhrung und den Barrieren sowie der Schirmelektrode, immer weiter zu reduzieren .Barrier system the Olfeidstarken, especially at the surface of Leitungsdurchfuhrungen, always larger. To meet the electrical design conditions, therefore, the oil gaps, in particular between the Leitungsdurchfuhrung and the barriers and the shield electrode, are always to be further reduced.
Aufgabe der vorliegenden Erfindung ist es daher, die elektrische Spannungsfestigkeit zwischen der Leitungsdurchfuhrung und der Barrierenanordnung zu erhohen.The object of the present invention is therefore to increase the electric strength between the Leitungsdurchfuhrung and the barrier arrangement.
Gelost wird die Aufgabe durch eine Barrierenanordnung gemäß den Merkmalen des Patentanspruchs 1. Erfindungsgemaß ist vorgesehen, zwischen der Barrierenanordnung und der Leitungs- durchfuhrung mindestens ein Barrierenelement zur Ausbildung einer zusatzlichen radialen Olstrecke angeordnet ist.The object is achieved by a barrier arrangement according to the features of claim 1. According to the invention, it is provided between the barrier arrangement and the line durchfuhrung at least one barrier element to form an additional radial Olstrecke is arranged.
Im Sinne der vorliegenden Erfindung wird unter einer zusatz- liehen radialen Olstrecke eine durch mindestens ein nahezu rotationssymmetrisches Barrierenelement gebildetes radiales Zirkulationssystem verstanden, wobei innerhalb der zusatzlichen radialen Olstrecke das Ol als Kühl- und Isolationsmedium in radialer und axialer Richtung zirkulieren kann.In the context of the present invention, an additional radial radial oil path is understood as a radial circulation system formed by at least one almost rotationally symmetrical barrier element, wherein within the additional radial oil path the oil can circulate in the radial and axial direction as cooling and insulating medium.
Im Sinne der vorliegenden Erfindung sind Barrieren emstucki- ge Segmente, die auch miteinander verbindbar und gegebenenfalls auch ineinander schiebbar sind und damit ein Barrierensystem, wie beispielsweise in der DE 10 2005 021 255 B4 of- fenbart, bilden.For the purposes of the present invention, barriers are integral segments which can also be connected to one another and, if appropriate, also pushed into one another and thus form a barrier system, as disclosed, for example, in DE 10 2005 021 255 B4.
Durch die Unterteilung von radialen Olstrecken zwischen der Leitungsdurchfuhrung und der Elektrode beziehungsweise der Barrierenanordnung werden - bei gleichermaßen zuverlässigem Design - die zulassigen Feldstarken des zirkulierenden Öles erhöht. Die Leitungsdurchfuhrung kann dabei eine Wand der zusatzlichen radialen Olstrecke ausbilden. Hierdurch ist ein Einsatz insbesondere für hohe Betriebsspannungen von mehr als 50OkV möglich, ohne die bisher bekannte Bauweise der derzei- tigen Ausleitungen vollständig neu konzipieren zu müssen.By dividing radial Olstrecken between the Leitungsdurchfuhrung and the electrode or the barrier arrangement are - with equally reliable design - increases the permissible field strengths of the circulating oil. The Leitungsdurchfuhrung can form a wall of the additional radial Olstrecke. This makes it possible to use it, in particular for high operating voltages of more than 50OkV, without having to completely redesign the hitherto known construction of the current discharges.
In einer vorteilhaften Ausgestaltung ist vorgesehen, dass weitere Barrierenelemente zusatzliche radiale Olstrecken ausbilden. Insbesondere im Bereich der korrespondierend und ver- setzt angeordnete Elektrode zur Leitungsdurchfuhrung kann somit eine Erhöhung der zulassigen Feldstarken innerhalb des zirkulierenden Ols zwischen der Elektrode und der Leitungsdurchfuhrung gewahrleistet werden. In einer vorteilhaften Ausgestaltung der Barrierenanordnung ist vorgesehen, dass die zusatzlichen Olstrecken einen gegenüber den Olstrecken der Barrieren verkleinerten Abstand aufweisen. Vorteilhafterweise umfasst das Barrierenelement Pressspan. Des Weiteren sind vorteilhafterweise mehrere Barrierenelemente in nahezu gleich bleibenden Abstanden zur Leitungsdurchfuhrung und/oder relativ zueinander angeordnet. Alternativ können die Abstande der zusatzlichen radialen Olstrecken variieren, insbesondere ist ein kleinerer Abstand im unteren Bereich der Barrierenelemente im Vergleich zum Abstand im oberen Bereich von Vorteil, da hierdurch im unteren Bereich die zulassigen Feldstarken verstärkt werden können. In einer vorteilhaften Ausgestaltung der Barrierenanordnung ist die Leitungsdurchfuhrung als Trichter oder Kegel geformt, die zusatzlich am unteren Ende durch einen zylinderförmigen Abschluss ausgebildet werden kann. Die Form der Barrierenelemente kann dabei insgesamt oder bezuglich einzelner Barrierenelemente den jeweiligen elektrischen oder baulichen Gegebenheiten angepasst werden. Insbesondere ist eine axiale Verlängerung der Barrierenelemente über den oberen Teil der Elektrode hinaus bei einer an der Elektrode anliegenden Gleichspannung vorteilhaft.In an advantageous embodiment, it is provided that further barrier elements form additional radial oil paths. In particular in the region of the correspondingly arranged and offset electrode for conduction, an increase of the permissible field strengths within the circulating oil between the electrode and the conduction of the line can thus be ensured. In an advantageous embodiment of the barrier arrangement is provided that the additional Olstrecken have a comparison with the Olstrecken the barriers reduced distance. Advantageously, the barrier element comprises pressboard. Furthermore, advantageously, a plurality of barrier elements are arranged at virtually constant distances from the line leadthrough and / or relative to one another. Alternatively, the distances of the additional radial oil paths may vary, in particular a smaller distance in the lower region of the barrier elements is advantageous in comparison to the distance in the upper region, since in this way the permissible field strengths can be increased in the lower region. In an advantageous embodiment of the barrier arrangement the Leitungsdurchfuhrung is formed as a funnel or cone, which can be additionally formed at the lower end by a cylindrical termination. The shape of the barrier elements can be adapted to the respective electrical or structural conditions as a whole or as regards individual barrier elements. In particular, an axial extension of the barrier elements beyond the upper part of the electrode is advantageous in the case of a DC voltage applied to the electrode.
Mittels Verbindungselementen ist das Barrierenelement vorteilhafterweise an der außen liegenden Barrierenanordnung oder an der Leitungsdurchfuhrung befestigbar und zur Elektro- de radial mit Abstandshalter distanziert. Die Leitungsdurchfuhrung dient insbesondere als Ausleitung an einem Transformator und/oder an einer Drosselspule. Des Weiteren ist vorteilhafterweise die Barrierenanordnung als Prufbarrierenan- ordnung ausgestaltet. Diese Prufbarrierenanordnungen unter- scheiden sich nur im unteren Bereich der Elektrodenanordnung von der in einem Transformator oder in einer Drosselspule eingesetzten Anordnung und sind für die Hochspannungsprufun- gen von Leitungsdurchfuhrungen einsetzbar. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Un- teranspruchen . Der Gegenstand der Erfindung wird mittels der nachfolgenden Figuren erläutert. Es zeigtBy means of connecting elements, the barrier element can advantageously be fastened to the outer barrier arrangement or to the leadthrough and is radially spaced apart from the electrode with spacers. The Leitungsdurchfuhrung serves in particular as a discharge to a transformer and / or to a choke coil. Furthermore, the barrier arrangement is advantageously configured as a test barrier arrangement. These test barrier arrangements differ from the arrangement used in a transformer or in a choke coil only in the lower region of the electrode arrangement and can be used for the high-voltage tests of line feedthroughs. Further advantageous embodiments emerge from the subclaims. The object of the invention will be explained by means of the following figures. It shows
Fig. 1 einen Teilausschnitt einer Ausleitung alsFig. 1 shows a partial section of a discharge as
Schnittzeichnung mit einem Barrierenelement zur Ausbildung einer zusatzlichen radialen Olstrecke zwischen dem Barnerenelement und der Leitungsdurchfuhrung;Cross-sectional view with a barrier element for forming an additional radial Olstrecke between the Barnerenelement and the Leitungsdurchfuhrung;
Fig. 2 einen Teilausschnitt einer Ausleitung alsFig. 2 shows a partial section of a discharge as
Schnittzeichnung mit zwei Barrierenelementen zur Ausbildung von zusätzlichen radialen 01- strecken zwischen der Leitungsdurchfuhrung und der Elektrode;Sectional drawing with two barrier elements to form additional radial 01- stretch between the Leitungsdurchfuhrung and the electrode;
Fig. 3 einen Teilausschnitt einer Ausleitung alsFig. 3 shows a partial section of a discharge as
Schnittzeichnung mit drei Barrierenelementen zur Ausbildung von zusätzlichen radialen 01- strecken zwischen der Leitungsdurchfuhrung und der Elektrode.Cross-sectional drawing with three barrier elements to form additional radial 01- stretch between the Leitungsdurchfuhrung and the electrode.
Die Fig. 1 zeigt einen Ausschnitt einer Ausleitung 1, wobei die Darstellung der Fig. 1 eine Schnittzeichnung durch eine rotationssymmetrisch aufgebaute Ausleitung 1 und bezuglich der axialen Rotationsachse 6 nur der rechte Teil als ein Teilbereich der Ausleitung 1 in der Fig. 1 dargestellt ist. Relativ zur Leitungsdurchfuhrung 3 des Transformators (nicht dargestellt) ist die Barrierenanordnung 2 angeordnet. Die ro- tationssymmetπsche Barrierenanordnung 2 umfasst im gezeigten Beispiel der Fig. 1 drei Barrieren 7a, 7b, 7c, die relativ zur Leitungsdurchfuhrung 3 angeordnet sind. Des Weiteren ist eine papierisolierte Elektrode 5 Teil der elektrischen Abschirmung der Ausleitung 1. Zwischen der Barrierenanordnung 2 und der Leitungsdurchführung 3 ist im gezeigten Beispiel der Fig. 1 ein Barrierenelement 4a integriert, das eine gegenüber der herkömmlichen Olstrecke verkleinerte zusatzliche radiale Olstrecke 8a innerhalb der Ausleitung 1 bildet, so dass die zulässigen Feldstarken innerhalb des zirkulierenden Öls erhöht werden können. Die zusatzliche radiale Olstrecke 8a wird durch das Barrierenelement 4a und die Leitungsdurchführung 3 gebildet .Fig. 1 shows a section of a discharge 1, wherein the representation of Fig. 1 is a sectional drawing through a rotationally symmetrical design discharge 1 and posted the axial axis of rotation 6 only the right part as a portion of the discharge line 1 in FIG. Relative to Leitungsdurchfuhrung 3 of the transformer (not shown), the barrier assembly 2 is arranged. In the example shown in FIG. 1, the rotation-symmetrical barrier arrangement 2 comprises three barriers 7 a, 7 b, 7 c, which are arranged relative to the line lead-through 3. Furthermore, a paper-insulated electrode 5 is part of the electrical shielding of the discharge line 1. Between the barrier arrangement 2 In the example shown in FIG. 1, the line bushing 3 has a barrier element 4a integrated therein, which forms an additional radial oil path 8a within the outlet 1 which is smaller than the conventional oil path, so that the permissible field strengths within the circulating oil can be increased. The additional radial oil path 8a is formed by the barrier element 4a and the leadthrough 3.
Einen Teilausschnitt einer Ausleitung 1 (nicht dargestellt) als Schnittzeichnung mit zwei rotationssymmetrischen Barrierenelementen 4a, 4b zur Ausbildung von zwei zusatzlichen radialen Olstrecken 8a, 8b zwischen der Leitungsdurchfuhrung 3 und der Elektrode 5 ist in der Fig. 2 dargestellt. Die Darstel- lung der Fig. 2 ist eine Schnittzeichnung durch eine rotationssymmetrisch aufgebaute Ausleitung 1 bezuglich der axialen Rotationsachse 6 und zeigt nur einen Teilbereich der Ausleitung 1. Die erste zusätzliche radiale Olstrecke 8a wird durch die Anordnung des ersten Barrierenelements 4a relativ zur Leitungsdurchfuhrung 3 ausgebildet. Die zweite zusätzliche radiale Olstrecke 8b entsteht durch den nahezu gleichbleibenden Abstand A zwischen dem ersten und dem zweiten Barrierenelement 4a, 4b. Diese Barrierenanordnung 2 ermöglicht durch die Ausbildung der zusatzlichen radialen Olstrecken 8a, 8b den Betrieb bei höheren elektrischen Feldstarken. Im gezeigtenA partial section of an outlet 1 (not shown) as a sectional drawing with two rotationally symmetrical barrier elements 4a, 4b for the formation of two additional radial Olstrecken 8a, 8b between the Leitungsdurchfuhrung 3 and the electrode 5 is shown in FIG. The illustration of FIG. 2 is a sectional view through a rotationally symmetrical outlet 1 with respect to the axial axis of rotation 6 and shows only a portion of the discharge line 1. The first additional radial oil path 8a is formed by the arrangement of the first barrier element 4a relative to Leitungsdurchfuhrung 3 , The second additional radial oil path 8b is formed by the almost constant distance A between the first and the second barrier element 4a, 4b. This barrier arrangement 2 allows the operation of higher electric field strengths by the formation of the additional radial Olstrecken 8a, 8b. Im shown
Beispiel der Fig. 2 besitzen die Barrierenelemente 4a, 4b eine gerade Form und ragen nicht über die Elektrode 5 hinaus.2, the barrier elements 4a, 4b have a straight shape and do not project beyond the electrode 5.
In der Fig. 3 ist ein Teilausschnitt einer Ausleitung 1 (nicht dargestellt) als Schnittzeichnung mit drei rotationssymmetrischen Barrierenelementen 4a, 4b, 4c zur Ausbildung von zusätzlichen radialen Olstrecken 8a, 8b, 8c zwischen der Leitungsdurchführung 3 und der Elektrode 5 dargestellt. Die zusätzlichen radialen Olstrecken 8a, 8b, 8c weisen aufgrund der unterschiedlichen Formen der Barrierenelemente 4a, 4b, 4c und deren relative Anordnung zueinander unterschiedliche Formen und Durchmesser auf. Insbesondere weist im gezeigten Beispiel der Fig. 3 die dritte zusatzliche radiale Olstrecke 8c im un- teren Teil einen kleineren Durchmesser als im oberen Teil der Barrierenelemente 4a, 4b, 4c auf. Im gezeigten Beispiel der Fig. 3 weisen die Barrierenelemente 4a, 4b, 4c eine gewinkelte Form auf, die im oberen Bereich parallel zur Form der Lei- tungsdurchfuhrung 3 ausgestaltet ist.FIG. 3 shows a partial section of an outlet 1 (not shown) as a sectional drawing with three rotationally symmetrical barrier elements 4a, 4b, 4c for forming additional radial oil paths 8a, 8b, 8c between the cable feedthrough 3 and the electrode 5. The additional radial oil paths 8a, 8b, 8c are due to the different shapes of the barrier elements 4a, 4b, 4c and their relative arrangement to each other different shapes and diameters. In particular, in the example shown in FIG. 3, the third additional radial oil path 8c in the lower part has a smaller diameter than in the upper part of the barrier elements 4a, 4b, 4c. In the example shown in FIG. 3, the barrier elements 4 a, 4 b, 4 c have an angled shape, which is designed parallel to the shape of the conduit 3 in the upper area.
Hierdurch ergibt sich der Vorteil, dass durch die Unterteilung von zusatzlichen radialen Olstrecken zwischen der Lei- tungsdurchfuhrung und der Elektrode und/oder der Barrierenanordnung die zulassigen Feldstarken erhöht werden. Dadurch ist es möglich, ahnliche oder sogar baugleiche Leitungsdurchfuh- rungen und Barrierenanordnungen für unterschiedliche Betriebsspannungen, beispielsweise für 50OkV und für 80OkV, zu verwenden. Im Falle einer nahezu baugleichen Leitungsdurch- fuhrung und Barrierenanordnung muss in Abhängigkeit der ge- wünschten Betriebsspannung lediglich das Barrierenelement bezuglich des gleich bleibenden Abstandes zur Leitungsdurchfuhrung angepasst beziehungsweise durch weitere Barrierenelemente erweitert werden. This results in the advantage that the permissible field strengths are increased by the subdivision of additional radial Olstrecken between the lungsungsfuhrung and the electrode and / or the barrier arrangement. This makes it possible to use similar or even identical line feedthroughs and barrier arrangements for different operating voltages, for example for 50 okV and 80 okV. In the case of an almost identically constructed leadthrough and barrier arrangement, depending on the desired operating voltage, only the barrier element with reference to the constant distance from the line leadthrough must be adapted or extended by further barrier elements.

Claims

Patentansprüche claims
1. Barrierenanordnung (2) für Leitungsdurchführung (3) mit nebeneinander angeordneten Barrieren (7a, 7b, 7c), die in vor- gebbaren Abstanden zueinander angeordnet sind, d a d u r c h g e k e n n z e i c h n e t , dass zwischen der Barrierenanordnung (2) und der Leitungsdurchfuh- rung (3) ein Barrierenelement (4a, 4b, 4c) zur Ausbildung einer zusatzlichen radialen Olstrecke (8a, 8b, 8c) angeordnet ist.1. Barrier arrangement (2) for line feedthrough (3) with adjacently arranged barriers (7a, 7b, 7c) which are arranged at predefinable distances from each other, characterized in that between the barrier arrangement (2) and the line feedthrough (3) a barrier element (4a, 4b, 4c) for forming an additional radial Olstrecke (8a, 8b, 8c) is arranged.
2. Barrierenanordnung (2) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass die zusatzliche Olstrecke (8a, 8b, 8c) einen gegenüber den 01- strecken der Barrieren (7a, 7b, 7c) verkleinerten Abstand auf- weist.2. The barrier arrangement (2) according to claim 1, characterized in that the additional oil path (8a, 8b, 8c) has a reduced distance compared to the distances of the barriers (7a, 7b, 7c).
3. Barrierenanordnung (2) nach einem der Ansprüche 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass weitere Barrierenelemente (4b, 4c) relativ zum ersten Barrie- renelement (4a) angeordnet sind und jeweils weitere zusatzliche radiale Olstrecken (8a, 8b, 8c) ausbilden.3. The barrier arrangement (2) according to claim 1, wherein further barrier elements (4b, 4c) are arranged relative to the first barrier element (4a) and each form further additional radial oil paths (8a, 8b, 8c).
4. Barrierenanordnung (2) nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , dass die Bar- rierenelemente (4a, 4b, 4c) zusatzliche radiale Olstrecken4. The barrier arrangement (2) according to claim 3, wherein a plurality of radial oil paths are provided in the barrier elements (4a, 4b, 4c)
(8a, 8b, 8c) bilden, die axial in eine Elektrode (5) hineinreichen und damit zumindest teilweise eine axiale Überlappung der zusatzlichen radialen Olstrecken (8a, 8b, 8c) zwischen der Barrierenanordnung (2) und Elektrode (5) sowie der Leitungs- fuhrung (3) gewahrleistet ist.(8a, 8b, 8c) extend axially into an electrode (5) and thus at least partially an axial overlap of the additional radial Olstrecken (8a, 8b, 8c) between the barrier assembly (2) and electrode (5) and the line - Guidance (3) is ensured.
5. Barrierenanordnung (2) nach einen der Ansprüche 3 oder 4, d a d u r c h g e k e n n z e i c h n e t , dass das die Barrierenelemente (4a, 4b, 4c) als ein Segment ausgebildet und an der Leitungsfuhrung (3) und/oder den Barrieren (7a, 7b, 7c), fixierbar sind.5. barrier arrangement (2) according to any one of claims 3 or 4, characterized in that the barrier elements (4a, 4b, 4c) formed as a segment and on the Leitungsfuhrung (3) and / or the barriers (7a, 7b, 7c), are fixable.
6. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t , dass das Barrierenelement (4a, 4b, 4c) Pressspan umfasst.6. The barrier arrangement (2) according to one of claims 1 to 5, wherein a barrier element (4a, 4b, 4c) comprises pressboard.
7. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , dass die Barrierenelemente (4a, 4b, 4c) relativ zueinander so angeordnet sind, dass im unteren Bereich der Barrierenelemente (4a, 4b, 4c) die zusätzlichen radialen Olstrecken (8a, 8b, 8c) einen kleineren Abstand als im oberen Bereich der Barrierenelemente (4a, 4b, 4c) besitzen.7. barrier arrangement (2) according to one of claims 1 to 6, characterized in that the barrier elements (4a, 4b, 4c) are arranged relative to each other so that in the lower region of the barrier elements (4a, 4b, 4c) the additional radial Olstrecken ( 8a, 8b, 8c) have a smaller distance than in the upper region of the barrier elements (4a, 4b, 4c).
8. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , dass die Barrierenelemente (4a, 4b, 4c) relativ zueinander so angeordnet sind, dass die zusatzlichen radialen Olstrecken (8a, 8b, 8c) einen nahezu gleichen Abstand (A) besitzen.8. barrier arrangement (2) according to one of claims 1 to 6, characterized in that the barrier elements (4a, 4b, 4c) are arranged relative to each other so that the additional radial Olstrecken (8a, 8b, 8c) a nearly equal distance (A ).
9. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 8, d a d u r c h g e k e n n z e i c h n e t , dass die Leitungsdurchfuhrung (3) als Trichter oder Kegel mit zylindrischem Aufsatz ausgebildet ist.9. barrier arrangement (2) according to one of claims 1 to 8, d a d u c h e c e n e z e c h e n e that the Leitungsdurchfuhrung (3) is designed as a funnel or cone with a cylindrical attachment.
10. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t , dass das Barrierenelement (4a, 4b, 4c) an der außen liegenden Barrierenanordnung (2) oder an der Leitungsdurchfuhrung (3) mittels Verbindungselemente befestigt ist. 10. barrier arrangement (2) according to one of claims 1 to 9, characterized in that the barrier element (4a, 4b, 4c) on the outer barrier arrangement (2) or on the Leitungsdurchfuhrung (3) is fastened by means of connecting elements.
11. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 10, d a d u r c h g e k e n n z e i c h n e t , dass die Leitungsdurchführung (3) als Ausleitung (1) an einem Transformator und/oder an einer Drosselspule angeordnet ist.11. The barrier arrangement (2) according to claim 1, wherein the line bushing (3) is arranged as a discharge (1) on a transformer and / or on a choke coil.
12. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 11, d a d u r c h g e k e n n z e i c h n e t , dass die Barrierenanordnung (2) eine Prufbarrierenanordnung zur Durchfuhrungsprufung ist.12. The barrier arrangement (2) according to claim 1, wherein the barrier arrangement (2) is a test barrier arrangement for carrying out a test.
13. Barrierenanordnung (2) nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Leitungsdurchfuhrung (3) an einem mit Isolierflussigkeit gefüllten Kabelkasten und /oder Verbindungskanal angeordnet ist. 13. barrier arrangement (2) according to one of claims 1 to 13, characterized in that the Leitungsdurchfuhrung (3) is arranged on a filled with Isolierflussigkeit cable box and / or connecting channel.
EP08875066.6A 2008-11-28 2008-11-28 Barrier arrangement for a cable duct Active EP2351056B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/010285 WO2010060450A1 (en) 2008-11-28 2008-11-28 Barrier arrangement for a cable duct

Publications (2)

Publication Number Publication Date
EP2351056A1 true EP2351056A1 (en) 2011-08-03
EP2351056B1 EP2351056B1 (en) 2019-12-25

Family

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Application Number Title Priority Date Filing Date
EP08875066.6A Active EP2351056B1 (en) 2008-11-28 2008-11-28 Barrier arrangement for a cable duct

Country Status (4)

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EP (1) EP2351056B1 (en)
CN (1) CN102227785B (en)
BR (1) BRPI0823215A2 (en)
WO (1) WO2010060450A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2620958B1 (en) * 2012-01-26 2014-11-26 Siemens Aktiengesellschaft Shielding device for an electrically conductive connection element
EP2942795B1 (en) * 2014-05-07 2017-03-01 ABB Schweiz AG High voltage electromagnetic induction device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1282170B (en) * 1964-08-25 1968-11-07 Licentia Gmbh Removable bushing for high voltage transformers
ATE73572T1 (en) * 1987-04-09 1992-03-15 Siemens Ag HIGH VOLTAGE INSULATION ARRANGEMENT FOR TRANSFORMERS AND CHOKE COILS, PARTICULARLY FOR HIGH VOLTAGE DIRECT CURRENT (HGUE) TRANSMISSION.
DE102005021255B4 (en) * 2005-05-02 2007-08-16 Siemens Ag Barrier system for the line feedthrough of an electrical system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010060450A1 *

Also Published As

Publication number Publication date
BRPI0823215A2 (en) 2015-06-30
CN102227785B (en) 2013-06-19
WO2010060450A1 (en) 2010-06-03
CN102227785A (en) 2011-10-26
EP2351056B1 (en) 2019-12-25

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