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EP2047485A1 - Apparatus for electrical screening of a high-voltage bushing - Google Patents

Apparatus for electrical screening of a high-voltage bushing

Info

Publication number
EP2047485A1
EP2047485A1 EP07787927A EP07787927A EP2047485A1 EP 2047485 A1 EP2047485 A1 EP 2047485A1 EP 07787927 A EP07787927 A EP 07787927A EP 07787927 A EP07787927 A EP 07787927A EP 2047485 A1 EP2047485 A1 EP 2047485A1
Authority
EP
European Patent Office
Prior art keywords
shield
electrical
output
bushing
feedthrough
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
EP07787927A
Other languages
German (de)
French (fr)
Other versions
EP2047485B1 (en
Inventor
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
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
Publication of EP2047485A1 publication Critical patent/EP2047485A1/en
Application granted granted Critical
Publication of EP2047485B1 publication Critical patent/EP2047485B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
    • 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

Definitions

  • the invention relates to a device for electrical shielding of a bushing output of a high voltage ⁇ line in the outer wall of an electrical Hochnapssge ⁇ rätes, wherein the shield is an electrically conductive screen interior and an exterior, the screen interior comprises at ⁇ closing insulation layer.
  • the edge transitions and corners between the passage of the high-voltage line and the boiler wall perpendicular thereto are shielded according to the prior art such that a so-called shielding wire is arranged around the feed-through output within the high-voltage electrical device.
  • This shielding wire is conventionally provided with an electrically conductive Ableungsinneren on the surface is electrically isolated, in particular by a paper insulation.
  • differently shaped shielding rings are also known in the prior art which have a rectangular electrically conductive shielding interior.
  • US 4,296,274 describes a high voltage feedthrough having a weatherproof shield.
  • WO 00/19453 describes a high-voltage ⁇ guide with a high voltage conductor in a onstuben with Isolati- provided insulator at one end a
  • a shielding electrode is arranged around the insulator, which extends from the flange in the axial direction over part of the length of the I-solators, wherein the number of insulation screens per unit length in the individual sections is different ⁇ Lich.
  • a disadvantage of all known in the art shielding solutions for high-voltage bushings is that the previous solutions either structurally complex or not ensure complete shielding of the almost rectangular bushing output.
  • the electrical shielding of the nearly rectangular corners and edges of the feedthrough output relative to the boiler wall is not completely guaranteed by the solutions provided in the prior art.
  • Object of the present invention is therefore to provide an electrical screen, which guarantees a complete From ⁇ shielding of the corners and edges of an execution output in a high voltage electric device.
  • This object is achieved by the features according to the invention Merkma ⁇ le of claim 1.
  • the object is achieved in that the shield is designed as arcuate circle ⁇ segment to the nearly rectangular design of the implementation. This ensures that the field ⁇ course of the electric field in the vicinity of the almost right ⁇ angled implementation output is changed.
  • Legally conventionally ⁇ the field distribution of the electric field in the vicinity of corners and edges is highly complex and insufficiently provides ⁇ previously monge by an electrical shielding.
  • the invention shown SSE configuration of the electrical shield as arcuate circular segment with two elongate legs influences the course of the electric field in the vicinity of the feedthrough output in such a way that the housing of the high-voltage electric device is electrically shielded completely in the region of the bushing output.
  • the electrical shield is positioned around the nearly rectangular feed-through output so that the radius of the arcuate circular segment extends through the corner of the nearly rectangular feedthrough output.
  • ⁇ by the shield is symmetrically positioned about the edges of the almost right-angled bushing output niert.
  • the shape of the shield corresponds to an idealized field profile of the electric field in the vicinity of the feedthrough output.
  • the radius of the arc ⁇ shaped circular segment of the shield is smaller than four times the length of the legs.
  • the radius is preferably a length of 10 mm to 500 mm, preferably 100 mm.
  • the shield is shielded by an additional barrier system.
  • the barrier system is mechanically connected to the bar ⁇ rierensystem the implementation and / or the barrier system of the electrical high voltage device.
  • the shield is formed around the lead-through output as a circumferential one-piece element. In this way, given a cost herstel ⁇ development of the shield, and a form-retaining effect of the shield.
  • individual shield segments are arranged in a circle around the lead-through output. The same applies to a corresponding Barrie ⁇ rensystem, for additional shielding.
  • the shield is connected to the electrical ground. It is also possible to use this electrical shield at the same time as a magnetic shield when making the shield of conductive material. Then local heating, caused by eddy currents, which can lead to considerable warming and possibly damage the electrical high-voltage device, avoided ⁇ the.
  • the shield is at least partially made of conductive material, which is partially interrupted by non-conductive material.
  • the shield consists of a carrier material which is at least partially encased with a conductive layer, in particular coated or encased.
  • Fig. 1 is a schematic sectional view of the shield
  • Fig. 2 is a schematic sectional view of the shield around a cable feedthrough with additional
  • the figure Fig. 1 shows a schematic sectional view of the basic construction of the present shield 10.
  • the dotted line represents the rotational axis of the Abschir ⁇ mung 10.
  • In the surroundings tion of the shield 10 is an isolation medium, in particular an oil, within the electrical high voltage device available.
  • the nearly perpendicular to a feed-through output (not shown) arranged shield 10 has two legs 23 which are part of the arcuate Kreissegmen ⁇ tes. The leg length is defined with respect to the transition of the arcuate circular segment to the respective straight legs 23.
  • the radius 22 defines the shape of the bogenför ⁇ shaped circular segment of the shield 10 and passes through the not shown corner of the line feedthrough output 21 (not shown).
  • FIG. 2 shows a shield 10 with an additional barrier system 14 around a bushing output 21 for a high-voltage electrical line.
  • the dashed line represents the axis of rotation of the shield 10, the circular passage 15 and the circular outlet 16.
  • a Lelei ⁇ tion 16 is arranged with a paper insulation 17, the e-lektwitz connection of the high voltage device with a ⁇ ßeren high-voltage network, in particular an HVDC network allows.
  • the shield 10 is arranged such that a symmetrical about the vertex of the almost rectangular bushing outlet 21 coverage of both angles of the passage 15 and the boiler wall 20 is ensured.
  • the to ⁇ additional barrier system 14 around the shield 10 ensures in conjunction with the circulating oil within the high voltage electrical appliance and performing 15 an optically timale electrical shielding of the corners of the feedthrough ⁇ output 21.
  • the barrier system 14 of the shield 10 with the barrier system 14 are connected within the implementation 15 and / or the high voltage electrical equipment, so that a continuous barrier sys- is given from the execution output 21 to the implementation 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Cable Accessories (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

The invention relates to an apparatus for electrical screening of a bushing output of a high-voltage line into the outer wall of an electrical high-voltage device, with the screening comprising an electrically conductive screen interior and an outer isolation layer, which surrounds the screen interior. The use of a curved circular segment with two limbs in conjunction with a correspondingly shaped barrier system ensures virtually complete electrical screening of the corners and edges of a bushing output.

Description

Beschreibungdescription
Vorrichtung zur elektrischen Abschirmung einer HochspannungsdurchführungDevice for electrical shielding of a high voltage feedthrough
Die Erfindung betrifft eine Vorrichtung zur elektrischen Abschirmung eines Durchführungsausganges einer Hochspannungs¬ leitung in die Außenwand eines elektrischen Hochspannungsge¬ rätes, wobei die Abschirmung ein elektrisch leitendes Ab- schirmungsinnere und eine äußere, das Abschirmungsinnere um¬ schließende Isolationsschicht umfasst.The invention relates to a device for electrical shielding of a bushing output of a high voltage ¬ line in the outer wall of an electrical Hochspannungsge ¬ rätes, wherein the shield is an electrically conductive screen interior and an exterior, the screen interior comprises at ¬ closing insulation layer.
Bei elektrischen Hochspannungsgeräten, wie zum Beispiel Leistungstransformatoren, muss für den elektrischen Anschluss an ein Hochspannungsnetzwerk gewährleistet sein, dass im Bereich des elektrischen Anschlusses und des Überganges der elektri¬ schen Leitung in das Hochspannungsgerät eine ausreichende e- lektrische Abschirmung gegeben ist. Insbesondere für Hoch¬ spannungsgleichstrom (HGÜ) - Vorrichtungen ist es zwingend notwendig, dass die Durchführung und die der Durchführung zu¬ gewandten Wand des elektrischen Hochspannungsgerätes ausrei¬ chend elektrisch geschirmt sind. Elektrisch ausreichend abge¬ schirmt bedeutet eine Reduzierung der auftretenden elektrischen Feldstärke auf der Oberfläche der Abschirmung und im angrenzenden Raum.In high voltage electrical equipment, such as power transformers, must be ensured for the electrical connection to a high-voltage network, that a sufficient e- lectrical shield is placed in the field of electric connection and the transition of the electrical ¬ rule line in the high-voltage device. Particularly for high voltage direct current ¬ (HVDC) - devices, it is imperative that the implementation and the implementation to ¬ facing wall of the electrical high-voltage device are suffi ¬ accordingly electrically shielded. Sufficiently electrically shields abge ¬ means a reduction of the occurring electric field strength on the surface of the shield and in the adjacent space.
Aus dem Grunde der hochspannungstechnischen Abschirmung werden die Kantenübergänge und Ecken zwischen der Durchführung der Hochspannungsleitung und der senkrecht dazu befindlichen Kesselwand gemäß dem Stand der Technik derart geschirmt, dass ein so genannter Schirmungsdraht um den Durchführungsausgang innerhalb des elektrischen Hochspannungsgerätes angeordnet ist. Dieser Schirmungsdraht ist herkömmlicherweise mit einem elektrisch leitenden Abschirmungsinneren versehen, das auf der Oberfläche elektrisch isoliert ist, insbesondere durch eine Papierisolation. Hiervon abgewandelt sind auch im Stand der Technik anders ausgeformte Schirmungsringe bekannt, die ein rechteckiges elektrisch leitendes Abschirmungsinnere auf- weisen.For the reason of high-voltage shielding, the edge transitions and corners between the passage of the high-voltage line and the boiler wall perpendicular thereto are shielded according to the prior art such that a so-called shielding wire is arranged around the feed-through output within the high-voltage electrical device. This shielding wire is conventionally provided with an electrically conductive Abschirmungsinneren on the surface is electrically isolated, in particular by a paper insulation. In a modification of this, differently shaped shielding rings are also known in the prior art which have a rectangular electrically conductive shielding interior.
So beschreibt die US 4,296,274 eine Hochspannungsdurchführung, die eine wetterfeste Schirmung aufweist. Durch eine zu¬ sätzliche Verdickung des entsprechenden Übergangsbereichs der Durchführung wird eine vorteilhafte Führung des elektrischen Feldes gemäß der dortigen Erfindung erreicht.Thus, US 4,296,274 describes a high voltage feedthrough having a weatherproof shield. By too ¬ additional thickening of the corresponding transition region carrying an advantageous guidance of the electric field is achieved, according to that invention.
Ebenfalls beschreibt die WO 00/19453 eine Hochspannungsdurch¬ führung mit einem Hochspannungsleiter in einem mit Isolati- onsschirmen versehenen Isolator, der an einem Ende einenAlso WO 00/19453 describes a high-voltage ¬ guide with a high voltage conductor in a onsschirmen with Isolati- provided insulator at one end a
Flansch aufweist, durch den der Hochspannungsleiter hindurchgeführt wird, wobei zwischen Flansch und Hochspannungsleiter ein Isolationsmedium vorgesehen ist. Zusätzlich ist um den Isolator eine Schirmungselektrode angeordnet, die sich vom Flansch in axialer Richtung über einen Teil der Länge des I- solators erstreckt, wobei die Anzahl der Isolationsschirme pro Längeneinheit in den einzelnen Abschnitten unterschied¬ lich ist .Has flange through which the high-voltage conductor is passed, wherein an insulating medium is provided between the flange and high-voltage conductor. In addition, a shielding electrode is arranged around the insulator, which extends from the flange in the axial direction over part of the length of the I-solators, wherein the number of insulation screens per unit length in the individual sections is different ¬ Lich.
Nachteilig an allen im Stand der Technik bekannten Abschirmungslösungen für Hochspannungsdurchführungen ist, dass die bisherigen Lösungen entweder konstruktiv aufwändig oder keine vollständige Abschirmung des nahezu rechtwinkligen Durchführungsausganges gewährleisten. Insbesondere die elektrische Abschirmung der nahezu rechtwinkligen Ecken und Kanten des Durchführungsausganges relativ zur Kesselwandung wird durch die im Stand der Technik bereitgestellten Lösungen nicht vollständig gewährleistet. Aufgabe der vorliegenden Erfindung ist es daher, eine elektrische Abschirmung bereitzustellen, die eine vollständige Ab¬ schirmung der Ecken und Kanten eines Durchführungsausgangs in ein elektrisches Hochspannungsgerät gewährleistet.A disadvantage of all known in the art shielding solutions for high-voltage bushings is that the previous solutions either structurally complex or not ensure complete shielding of the almost rectangular bushing output. In particular, the electrical shielding of the nearly rectangular corners and edges of the feedthrough output relative to the boiler wall is not completely guaranteed by the solutions provided in the prior art. Object of the present invention is therefore to provide an electrical screen, which guarantees a complete From ¬ shielding of the corners and edges of an execution output in a high voltage electric device.
Gelöst wird diese Aufgabe durch die erfindungsgemäßen Merkma¬ le des Patentanspruchs 1. Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Abschirmung als bogenförmiges Kreis¬ segment um die nahezu rechteckige Ausführung der Durchführung konzipiert ist. Hierdurch ist gewährleistet, dass der Feld¬ verlauf des elektrischen Feldes in der Nähe des nahezu recht¬ winkligen Durchführungsausganges verändert wird. Herkömmlich¬ erweise ist der Feldverlauf des elektrischen Feldes in der Nähe von Ecken und Kanten hochgradig komplex und nur unzurei- chend durch eine elektrische Abschirmung bisher sicherge¬ stellt. Mittels der erfindungsgemäßen Vorrichtung ist es jedoch möglich, den Verlauf des elektrischen Feldes in der Nähe der Ecken und Kanten so zu beeinflussen, dass eine nahezu vollständige Abschirmung der Ecken und Kanten in der Nähe des Durchführungsausganges gewährleistet ist. Die erfindungsgemä¬ ße Ausgestaltung der elektrischen Abschirmung als bogenförmiges Kreissegment mit zwei länglichen Schenkeln beeinflusst den Verlauf des elektrischen Feldes in der Umgebung des Durchführungsausgangs in der Art, dass das Gehäuse des elekt- rischen Hochspannungsgerätes vollständig im Bereich des Durchführungsausganges elektrisch geschirmt ist.This object is achieved by the features according to the invention Merkma ¬ le of claim 1. The object is achieved in that the shield is designed as arcuate circle ¬ segment to the nearly rectangular design of the implementation. This ensures that the field ¬ course of the electric field in the vicinity of the almost right ¬ angled implementation output is changed. Legally conventionally ¬ the field distribution of the electric field in the vicinity of corners and edges is highly complex and insufficiently provides ¬ previously sicherge by an electrical shielding. By means of the device according to the invention, however, it is possible to influence the course of the electric field in the vicinity of the corners and edges so that an almost complete shielding of the corners and edges is ensured in the vicinity of the bushing output. The invention shown SSE configuration of the electrical shield as arcuate circular segment with two elongate legs influences the course of the electric field in the vicinity of the feedthrough output in such a way that the housing of the high-voltage electric device is electrically shielded completely in the region of the bushing output.
In einer vorteilhaften Ausgestaltung der erfindungsgemäßen Vorrichtung ist die elektrische Abschirmung um den nahezu rechtwinkligen Durchführungsausgang so positioniert, dass der Radius des bogenförmigen Kreissegmentes durch die Ecke des nahezu rechtwinkligen Durchführungsausganges verläuft. Hier¬ durch ist die Abschirmung symmetrisch zu den beiden Kanten des nahezu rechtwinkligen Durchführungsausganges positio- niert . Weiterhin ist in einer vorteilhaften Ausgestaltung der erfindungsgemäßen Vorrichtung vorgesehen, dass die Form der Abschirmung einem idealisierten Feldverlauf des elektrischen Feldes in der Umgebung des Durchführungsausganges entspricht.In an advantageous embodiment of the device according to the invention, the electrical shield is positioned around the nearly rectangular feed-through output so that the radius of the arcuate circular segment extends through the corner of the nearly rectangular feedthrough output. Here ¬ by the shield is symmetrically positioned about the edges of the almost right-angled bushing output niert. Furthermore, it is provided in an advantageous embodiment of the device according to the invention that the shape of the shield corresponds to an idealized field profile of the electric field in the vicinity of the feedthrough output.
Vorteilhafterweise ist vorgesehen, dass der Radius des bogen¬ förmigen Kreissegmentes der Abschirmung kleiner als die vierfache Länge der Schenkel ist. Hierdurch ist eine allseitige Abschirmung der entsprechenden Ecken und Kanten des Durchfüh- rungsausganges gewährleistet. Ebenfalls beträgt der Radius vorzugsweise eine Länge von 10 mm bis 500 mm, vorzugsweise 100 mm. In einer vorteilhaften Ausgestaltung der Vorrichtung ist vorgesehen, dass die Abschirmung durch ein zusätzliches Barrierensystem geschirmt ist. Diese bei den Leitungsdurch- führungen bereits verwendeten Barrierensysteme werden ebenfalls als schirmendes Barrierensystem mit der erfindungsgemä¬ ßen Abschirmung um den Ausgang der Durchführung kombiniert. Insbesondere für HGÜ-Anwendungen ist aufgrund der möglichen hohen Übertragungsspannungen eine effektive elektrische Ab- schirmung der Ecken und Kanten des Durchführungsausganges zur Außenwand des elektrischen Hochspannungsgerätes gewährleis¬ tet. Vorteilhafterweise ist das Barrierensystem mit dem Bar¬ rierensystem der Durchführung und/oder dem Barrierensystem des elektrischen Hochspannungsgerätes mechanisch verbunden.Advantageously, it is provided that the radius of the arc ¬ shaped circular segment of the shield is smaller than four times the length of the legs. As a result, an all-round shielding of the corresponding corners and edges of the bushing output is ensured. Also, the radius is preferably a length of 10 mm to 500 mm, preferably 100 mm. In an advantageous embodiment of the device is provided that the shield is shielded by an additional barrier system. These guides at the Leitungsdurch- barrier systems already in use also be combined as a screen forming barrier system with the invention shown SEN shield to the output of the implementation. Particularly for HVDC applications an effective electrical shielding waste is of the corners and edges of the bushing output to the outside wall of the electrical high-voltage device provides slightest ¬ tet because of the potential high transmission voltages. Advantageously, the barrier system is mechanically connected to the bar ¬ rierensystem the implementation and / or the barrier system of the electrical high voltage device.
Es wird als Vorteil angesehen, dass die Abschirmung um den Durchführungsausgang als umlaufendes einstückiges Element ausgeformt ist. Hierdurch sind eine kostengünstige Herstel¬ lung der Abschirmung sowie eine formstabile Wirkung der Ab- schirmung gegeben. Alternativ ist vorgesehen, dass einzelne Abschirmungssegmente kreisförmig um den Durchführungsausgang angeordnet sind. Gleiches gilt für ein entsprechendes Barrie¬ rensystem, zur zusätzlichen Abschirmung. Vorteilhafterweise ist die Abschirmung mit der elektrischen Masse verbunden. Ferner besteht die Möglichkeit, diese elektrische Abschirmung zugleich als magnetische Abschirmung zu nutzen, wenn man die Abschirmung aus leitendem Material herstellt. Dann würden lokale Erwärmungen, bedingt durch Wirbelströme, die zu be- trächtlichen Erwärmungen und gegebenenfalls Beschädigungen des elektrischen Hochspannungsgerätes führen können, vermie¬ den. Vorteilhafterweise besteht die Abschirmung zumindest teilweise aus leitendem Material besteht, welches zum Teil durch nicht leitendes Material unterbrochen ist.It is considered an advantage that the shield is formed around the lead-through output as a circumferential one-piece element. In this way, given a cost herstel ¬ development of the shield, and a form-retaining effect of the shield. Alternatively, it is provided that individual shield segments are arranged in a circle around the lead-through output. The same applies to a corresponding Barrie ¬ rensystem, for additional shielding. Advantageously, the shield is connected to the electrical ground. It is also possible to use this electrical shield at the same time as a magnetic shield when making the shield of conductive material. Then local heating, caused by eddy currents, which can lead to considerable warming and possibly damage the electrical high-voltage device, avoided ¬ the. Advantageously, the shield is at least partially made of conductive material, which is partially interrupted by non-conductive material.
Weiterhin besteht in einer vorteilhaften Ausgestaltung der Vorrichtung die Abschirmung aus einem Trägermaterial, welches mit einer leitenden Schicht zumindest teilweise ummantelt, insbesondere beschichtet oder ummantelt, ist.Furthermore, in an advantageous embodiment of the device, the shield consists of a carrier material which is at least partially encased with a conductive layer, in particular coated or encased.
Weitere vorteilhafte Ausgestaltungen der Erfindung finden sich in den Unteransprüchen. Die Erfindung wird anhand der Ausführungsbeispiele in den Zeichnungen näher erläutert. Es zeigen:Further advantageous embodiments of the invention can be found in the subclaims. The invention will be explained in more detail with reference to the embodiments in the drawings. Show it:
Fig. 1 schematische Schnittzeichnung der Abschirmung;Fig. 1 is a schematic sectional view of the shield;
Fig. 2 schematische Schnittzeichnung der Abschirmung um eine Leitungsdurchführung mit zusätzlichenFig. 2 is a schematic sectional view of the shield around a cable feedthrough with additional
Barrierensystemen .Barrier systems.
Die Figur Fig. 1 zeigt eine schematische Schnittzeichnung des prinzipiellen Aufbaus der erfindungsgemäßen Abschirmung 10. Die gestrichelte Linie stellt die Rotationsachse der Abschir¬ mung 10 dar. Das Abschirmungsinnere 11 ist, zumindest zum In¬ neren des elektrischen Hochspannungsgerätes, mit einer zu¬ sätzlichen Isolationsschicht 12 isoliert. Herkömmlicherweise handelt es sich hierbei um eine Papierisolation. In der Umge- bung der Abschirmung 10 ist ein Isolationsmedium, insbesondere ein Öl, innerhalb des elektrischen Hochspannungsgerätes vorhanden. Die nahezu rechtwinklig um einen Durchführungsausgang (nicht dargestellt) angeordnete Abschirmung 10 weist zwei Schenkel 23 auf, die Teil des bogenförmigen Kreissegmen¬ tes sind. Die Schenkellänge ist bezüglich des Übergangs des bogenförmigen Kreissegmentes zu den jeweils geraden Schenkeln 23 definiert. Der Radius 22 definiert die Form des bogenför¬ migen Kreissegmentes der Abschirmung 10 und verläuft durch die nicht dargestellte Ecke der Leitungsdurchführungsausgangs 21 (nicht dargestellt) .The figure Fig. 1 shows a schematic sectional view of the basic construction of the present shield 10. The dotted line represents the rotational axis of the Abschir ¬ mung 10. The screen interior 11, at least in ¬ Neren the high voltage electrical appliance, with a too ¬ sätzlichen insulating layer 12 isolated. Traditionally, this is a paper insulation. In the surroundings tion of the shield 10 is an isolation medium, in particular an oil, within the electrical high voltage device available. The nearly perpendicular to a feed-through output (not shown) arranged shield 10 has two legs 23 which are part of the arcuate Kreissegmen ¬ tes. The leg length is defined with respect to the transition of the arcuate circular segment to the respective straight legs 23. The radius 22 defines the shape of the bogenför ¬ shaped circular segment of the shield 10 and passes through the not shown corner of the line feedthrough output 21 (not shown).
Die Figur Fig. 2 zeigt eine Abschirmung 10 mit einem zusätzlichen Barrierensystem 14 um einen Durchführungsausgang 21 für eine elektrische Hochspannungsleitung. Die gestrichelte Linie stellt die Rotationsachse der Abschirmung 10, der kreisförmigen Durchführung 15 bzw. der kreisförmigen Ausleitung 16 dar. Innerhalb der Durchführung 15 ist eine Auslei¬ tung 16 mit einer Papierisolation 17 angeordnet, die eine e- lektrische Verbindung des Hochspannungsgerätes mit einem äu¬ ßeren Hochspannungsnetz, insbesondere einem HGÜ-Netz, ermöglicht. Zu dem nahezu rechtwinkligen Durchführungsausgang 21 ist die Abschirmung 10 derart angeordnet, dass eine um den Eckpunkt des nahezu rechtwinkligen Durchführungsausganges 21 symmetrische Abdeckung beider Winkel der Durchführung 15 beziehungsweise der Kesselwand 20 gewährleistet ist. Das zu¬ sätzliche Barrierensystem 14 um die Abschirmung 10 garantiert in Verbindung mit dem zirkulierenden Öl innerhalb des elektrischen Hochspannungsgerätes und der Durchführung 15 eine op- timale elektrische Abschirmung der Ecken des Durchführungs¬ ausgangs 21. Vorteilhafterweise kann das Barrierensystem 14 der Abschirmung 10 mit dem Barrierensystem 14 innerhalb der Durchführung 15 und/oder des elektrischen Hochspannungsgerätes verbunden werden, so dass ein durchgängiges Barrierensys- tem 14 vom Durchführungsausgang 21 bis in die Durchführung 15 gegeben ist . FIG. 2 shows a shield 10 with an additional barrier system 14 around a bushing output 21 for a high-voltage electrical line. The dashed line represents the axis of rotation of the shield 10, the circular passage 15 and the circular outlet 16. Within the passage 15 is a Lelei ¬ tion 16 is arranged with a paper insulation 17, the e-lektrische connection of the high voltage device with a ¬ ßeren high-voltage network, in particular an HVDC network allows. To the almost rectangular bushing outlet 21, the shield 10 is arranged such that a symmetrical about the vertex of the almost rectangular bushing outlet 21 coverage of both angles of the passage 15 and the boiler wall 20 is ensured. The to ¬ additional barrier system 14 around the shield 10 ensures in conjunction with the circulating oil within the high voltage electrical appliance and performing 15 an optically timale electrical shielding of the corners of the feedthrough ¬ output 21. Advantageously, the barrier system 14 of the shield 10 with the barrier system 14 are connected within the implementation 15 and / or the high voltage electrical equipment, so that a continuous barrier sys- is given from the execution output 21 to the implementation 15.

Claims

Patentansprüche claims
1. Vorrichtung zur elektrischen Abschirmung (10) eines nahezu rechtwinkligen Durchführungsausganges (21) einer Hochspan- nungsleitung in eine Außenwand (20) eines elektrischen Hochspannungsgerätes, wobei die Abschirmung (10) ein elektrisch leitendes Abschirmungsinnere (16) und eine äußere, das Ab¬ schirmungsinnere (16) umschließende Isolationsschicht um- fasst, d a d u r c h g e k e n n z e i c h n e t , dass die Abschirmung (10) als bogenförmiges Kreissegment um den nahezu rechtwinkligen Durchführungsausgang (21) angeordnet und die Schenkel (23) der nahezu parallel zur Ausrichtung der Durchführung (15) und zur Ausrichtung der Kesselwand (20) an- geordnet ist.1. A device for electrical shielding (10) of a nearly rectangular bushing output (21) of a high-voltage line in an outer wall (20) of an electrical high-voltage device, wherein the shield (10) has an electrically conductive Abschirmungsinnere (16) and an outer, the Ab ¬ enclosing insulation layer (16), characterized in that the shield (10) is arranged as an arcuate circle segment around the nearly rectangular leadthrough output (21) and the legs (23) of the almost parallel to the orientation of the feedthrough (15) and to align the Boiler wall (20) is arranged.
2. Vorrichtung 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 Abschirmungsinnere einen rohrförmigen Querschnitt aufweist.2. Apparatus according to claim 1, wherein a shielding interior has a tubular cross-section.
3. Vorrichtung 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 die Position der Abschirmung (10) relativ zum nahezu rechtwinkligen Durchführungsausgang (21) so gewählt ist, dass der Radius (22) des bogenförmigen Segmentes durch den nahezu rechten Winkel des Durchführungsausganges (21) verläuft.3. Device according to one of claims 1 or 2, characterized in that the position of the shield (10) is selected relative to the nearly rectangular feedthrough output (21) so that the radius (22) of the arcuate segment by the almost right angle of the feedthrough output ( 21) runs.
4. Vorrichtung nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , dass die Form der Abschirmung (10) einem idealisierten Verlauf des elektrischen Feldes der Umgebung des nahezu rechtwinkligen Durchführungsausganges (21) entspricht.4. The device according to claim 1, wherein the shape of the shield corresponds to an idealized course of the electric field of the surroundings of the approximately right-angled lead-out output.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass der Radius (22) des bogenförmigen Kreissegmentes kleiner als die vierfache Länge der Schenkel (23) ist.5. Device according to one of claims 1 to 4, characterized in that the radius (22) of the arcuate circular segment is smaller than four times the length of the legs (23).
6. Vorrichtung 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 der Radius (22) des bogenförmigen Kreissegmentes der Abschirmung (10) zwischen 10 mm und 500 mm, vorzugsweise 100 mm, be¬ trägt .6. Device according to one of claims 1 to 5, characterized in that the radius (22) of the arcuate circular segment of the shield (10) between 10 mm and 500 mm, preferably 100 mm, ¬ carries.
7. Vorrichtung 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 Abschirmung (10) von einem zumindest aus einer Barriere bestehenden Barrierensystem (14) zusätzlich elektrisch iso- liert ist .7. Device according to one of claims 1 to 6, d a d e r c h e c e in n e c e s that the shield (10) of an at least one barrier barrier system (14) is additionally electrically insulated.
8. Vorrichtung nach Anspruch 7, d a d u r c h g e k e n n z e i c h n e t , dass das Barrierensystem (14) mit einem innerhalb der Durchführung (15) und/oder innerhalb des Kessels anordbares Barrierensys¬ tem (14) verbindbar ist.8. The device according to claim 7, characterized in that the barrier system (14) with a within the implementation (15) and / or within the boiler can be arranged Barrierensys ¬ system (14) is connectable.
9. Vorrichtung 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 elektrische Abschirmung (10) und/oder das Barrierensystem (14) mittels einer Befestigungsvorrichtung mit der Kesselwand (20) und/oder der Durchführung (15) verbunden ist.9. The device according to claim 1, wherein the electrical shield (10) and / or the barrier system (14) is connected to the vessel wall (20) and / or the bushing (15) by means of a fastening device.
10. Vorrichtung 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 die elektrische Abschirmung (10) um die Durchführung (15) in Form eines Vollkörpers angeordnet ist.10. The device according to claim 1, wherein the electrical shield is arranged around the bushing in the form of a solid body.
11. Vorrichtung 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 die elektrische Abschirmung (10) und/oder das Barrierensystem (14) für die elektrische Abschirmung (10) aus Segmenten bestehen, die in bestimmten Abständen um den Durchführungsaus- gang (21) angeordnet sind.11. Device according to one of claims 1 to 9, characterized in that the electrical shield (10) and / or the barrier system (14) for the electrical shield (10) consist of segments which are arranged at certain intervals around the feedthrough output (21).
12. Vorrichtung 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 das Abschirmungsinnere (11) mit der elektrischen Masse ver- bunden und damit geerdet ist.12. The device according to claim 1, wherein the shielding interior is connected to the electrical ground and grounded therewith.
13. Vorrichtung nach einem der Ansprüche 1 bis 12, d a d u r c h g e k e n n z e i c h n e t , dass die Abschirmung (10) zumindest teilweise aus leitendem Mate- rial besteht, welches zum Teil durch nicht leitendes Material unterbrochen sein kann.13. Device according to one of claims 1 to 12, d a d u r c h e c e n e c e in that the shield (10) consists at least partially of conductive material, which may be partially interrupted by non-conductive material.
14. Vorrichtung nach einem der Ansprüche 1 bis 13, d a d u r c h g e k e n n z e i c h n e t , dass die Abschirmung (10) aus einem nicht leitenden Trägermaterial besteht, welches mit einer leitenden Schicht zumindest teil¬ weise ummantelt ist. 14. Device according to one of claims 1 to 13, characterized in that the shield (10) consists of a non-conductive carrier material, which is at least partially coated with a conductive layer ¬ .
EP07787927.8A 2006-08-03 2007-07-26 Apparatus for electrical screening of a high-voltage bushing Not-in-force EP2047485B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038221A DE102006038221B4 (en) 2006-08-03 2006-08-03 Device for electrical shielding of a high voltage feedthrough
PCT/EP2007/057701 WO2008015150A1 (en) 2006-08-03 2007-07-26 Apparatus for electrical screening of a high-voltage bushing

Publications (2)

Publication Number Publication Date
EP2047485A1 true EP2047485A1 (en) 2009-04-15
EP2047485B1 EP2047485B1 (en) 2016-08-31

Family

ID=38656696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07787927.8A Not-in-force EP2047485B1 (en) 2006-08-03 2007-07-26 Apparatus for electrical screening of a high-voltage bushing

Country Status (6)

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US (1) US8124878B2 (en)
EP (1) EP2047485B1 (en)
CN (1) CN101501789B (en)
BR (1) BRPI0714621B1 (en)
DE (1) DE102006038221B4 (en)
WO (1) WO2008015150A1 (en)

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WO2012004289A1 (en) * 2010-07-08 2012-01-12 Abb Research Ltd High voltage shielding device and a system comprising the same
EP2846336B1 (en) * 2013-09-10 2016-05-04 Siemens Aktiengesellschaft Connection of at least four electrical conductors
DE102015224568A1 (en) * 2015-12-08 2017-06-08 Siemens Aktiengesellschaft Device for the electrical connection of at least four electrical conductors
CN105977887B (en) * 2016-06-01 2018-10-23 中国西电电气股份有限公司 A kind of inflatable ultrahigh voltage direct current wall bushing
WO2019219194A1 (en) * 2018-05-17 2019-11-21 Abb Schweiz Ag Shielding of high voltage equipment

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Also Published As

Publication number Publication date
CN101501789A (en) 2009-08-05
WO2008015150A1 (en) 2008-02-07
US8124878B2 (en) 2012-02-28
DE102006038221B4 (en) 2009-03-26
US20100065304A1 (en) 2010-03-18
BRPI0714621A2 (en) 2013-04-30
BRPI0714621B1 (en) 2018-05-22
EP2047485B1 (en) 2016-08-31
CN101501789B (en) 2012-01-04
DE102006038221A1 (en) 2008-02-07

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