EP0964409B1 - Bushing for high- and middlevoltage station - Google Patents

Bushing for high- and middlevoltage station Download PDF

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Publication number
EP0964409B1
EP0964409B1 EP99401249A EP99401249A EP0964409B1 EP 0964409 B1 EP0964409 B1 EP 0964409B1 EP 99401249 A EP99401249 A EP 99401249A EP 99401249 A EP99401249 A EP 99401249A EP 0964409 B1 EP0964409 B1 EP 0964409B1
Authority
EP
European Patent Office
Prior art keywords
bar
divider
voltage
boss
voltage divider
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.)
Expired - Lifetime
Application number
EP99401249A
Other languages
German (de)
French (fr)
Other versions
EP0964409A1 (en
Inventor
Olivier Rouilhac
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.)
Alstom Holdings SA
Original Assignee
Alstom France SA
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 Alstom France SA filed Critical Alstom France SA
Publication of EP0964409A1 publication Critical patent/EP0964409A1/en
Application granted granted Critical
Publication of EP0964409B1 publication Critical patent/EP0964409B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/24—Voltage transformers
    • H01F38/26—Constructions
    • 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 crossing for a post at high or medium voltage, including a divider tension, a metal bar extending along a longitudinal direction above the voltage divider, and a metal frame to mechanically couple and electrically one end of the bar to the divider of voltage.
  • Such a crossing is in particular erected on the ground under a high or medium voltage line to capture the current passing through the line and return it after division, to protective or measuring equipment.
  • the divider of tension consists of two cylindrical glass blocks separated by a metal electrode and the bar is erected on top of the divider resting on it.
  • the both mechanical and electrical connection between the bar and the voltage divider must be produced by a reinforcement metallic and the object of the invention is to provide a solution for the realization of such a frame which puts in works few parts and whose assembly is simple and reliable.
  • Figure 1 shows very schematically in section axial a crossing according to the invention.
  • Figure 2 shows in more detail in axial section the metal frame between the bar and the divider voltage.
  • Figure 3 shows in more detail in axial section the fixing the bar to the upper part of the crossing.
  • the crossing is presented as a support arranged on the ground and which extends in a direction longitudinal and axial vertical D. It includes a bar metallic 1 electrically conductive, for example aluminum, which extends vertically inside a 2 tubular insulating jacket.
  • the envelope can for example be porcelain.
  • the envelope rests on an enclosure metallic 3 placed on the ground.
  • the ends of the envelope are fitted with fittings 4 and 5, fitting 5 being used to anchoring the envelope to the enclosure.
  • the fitting 4 is used to the anchoring of a power line (not shown) on the above the crossing.
  • the bar 1 is electrically connected to the fitting 4 and to a voltage divider 6 placed in the enclosure 3 on a metal support 7 grounded.
  • the voltage divider 6 consists of two cylindrical glass blocks stacked one on top of the other and separated by an electrode not represented.
  • Bar 1 enters inside enclosure 3 and rests by its lower end on the top of the divider tension 6.
  • a metal frame 8 ensures the coupling electrical and mechanical bar and divider voltage.
  • the metal frame 8 comprises a flange metal 9 which is fixed on the upper face of the divider Of voltage.
  • the flange has a central boss 10 in which is formed a substantially frustoconical bore 11 extending in the longitudinal direction and leaving a substantially cylindrical central lug 12 extending axially in direction D.
  • Tapered bore 11 forms a sort of annular groove whose bottom is more tightened as the opening, this groove therefore surrounding the lug central 12 which projects from the side of the bar following the direction D.
  • the frame also comprises a part which is substantially frustoconical 13 which constitutes the end of the bar 1 in contact with the voltage divider.
  • This piece 13 is split in direction D and is intended to be inserted in bore 11 of the flange. It has a bore substantially cylindrical central 14 which extends axially following direction D and in which comes to engage lug 12.
  • the part 13 and the flange 9 are designed to be inserted each other with some resistance to insertion so as to ensure good electrical contact and also mechanical resistance without play perpendicular to the direction D.
  • care must be taken to ensure that branches 15 of the frusto-conical part support so elastic on the wall of the bore 11 when the part 13 is engaged in boss 10 and there is contact electric between the lug 12 and the wall of the bore 14.
  • Exhibit 13 and bar 1 form a single piece of foundry or other like the flange 9 with its boss 10.
  • the lower end of the bar 1 is set compression in direction D against the divider of tension through, for example, a set of spring washers 16 (or a spiral spring) mounted around a central lug 17 arranged at the end upper of bar 1 to engage in a bore cylindrical 18 of the fitting 4.
  • a set of spring washers 16 or a spiral spring mounted around a central lug 17 arranged at the end upper of bar 1 to engage in a bore cylindrical 18 of the fitting 4.
  • the arrangement of the frame according to the invention does not therefore does not require the use of an insulating support for hold the bar 1 inside the envelope 2, hold bar 1 mechanics being provided on the one hand by the frame 8 and on the other hand by the lug 17.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)
  • Transformers For Measuring Instruments (AREA)

Description

L'invention se rapporte à une traversée pour poste à haute ou à moyenne tension, comprenant un diviseur de tension, une barre métallique s'étendant suivant une direction longitudinale au dessus du diviseur de tension, et une armature métallique pour accoupler mécaniquement et électriquement une extrémité de la barre au diviseur de tension.The invention relates to a crossing for a post at high or medium voltage, including a divider tension, a metal bar extending along a longitudinal direction above the voltage divider, and a metal frame to mechanically couple and electrically one end of the bar to the divider of voltage.

Une telle traversée est en particulier érigée au sol sous une ligne à haute ou à moyenne tension pour capter le courant passant dans la ligne et le restituer, après division, à des appareillages de protection ou de mesure. Dans les traversées de nouvelle génération, le diviseur de tension est constitué de deux blocs de verre cylindriques séparés par une électrode métallique et la barre est érigée sur le dessus du diviseur en reposant sur celui-ci. La liaison tant mécanique que électrique entre la barre et le diviseur de tension doit être réalisée par une armature métallique et le but de l'invention est de proposer une solution pour la réalisation d'une telle armature qui met en oeuvre peu de pièces et dont le montage est simple et fiable.Such a crossing is in particular erected on the ground under a high or medium voltage line to capture the current passing through the line and return it after division, to protective or measuring equipment. In new generation crossings, the divider of tension consists of two cylindrical glass blocks separated by a metal electrode and the bar is erected on top of the divider resting on it. The both mechanical and electrical connection between the bar and the voltage divider must be produced by a reinforcement metallic and the object of the invention is to provide a solution for the realization of such a frame which puts in works few parts and whose assembly is simple and reliable.

A cet effet, l'invention a pour objet une traversée pour poste à haute ou à moyenne tension, comprenant un diviseur de tension, une barre métallique s'étendant suivant une direction longitudinale au dessus du diviseur de tension, et une armature métallique pour accoupler mécaniquement et électriquement une extrémité de la barre au diviseur de tension, caractérisée en ce que l'armature comprend :

  • un flasque avec un bossage fixé sur le dessus du diviseur de tension, le bossage présentant un alésage sensiblement tronconique s'étendant suivant la direction longitudinale à l'intérieur duquel saille un ergot central sensiblement cylindrique,
  • une pièce sensiblement tronconique constituant une extrémité de la barre, cette étant fendue suivant la direction longitudinale et présentant un alésage cylindrique central, la pièce et le bossage étant conformés pour s'insérer l'un dans l'autre.
    • To this end, the subject of the invention is a bushing for a high or medium voltage substation, comprising a tension divider, a metal bar extending in a longitudinal direction above the tension divider, and a metal frame for coupling mechanically and electrically one end of the bar to the voltage divider, characterized in that the armature comprises:
  • a flange with a boss fixed on top of the tension divider, the boss having a substantially frustoconical bore extending in the longitudinal direction inside which projects a substantially cylindrical central lug,
  • a substantially frustoconical part constituting one end of the bar, this being slotted in the longitudinal direction and having a central cylindrical bore, the part and the boss being shaped to fit into one another.

    • L'invention sera encore mieux comprise à la lecture de la description qui suit d'un exemple de réalisation illustré sur les dessins.The invention will be better understood on reading the following description of an illustrated embodiment in the drawings.

    La figure 1 montre de façon très schématique en coupe axiale une traversée selon l'invention.Figure 1 shows very schematically in section axial a crossing according to the invention.

    La figure 2 montre plus en détails en coupe axiale l'armature métallique entre la barre et le diviseur de tension.Figure 2 shows in more detail in axial section the metal frame between the bar and the divider voltage.

    La figure 3 montre plus en détails en coupe axiale la fixation de la barre à la partie supérieure de la traversée.Figure 3 shows in more detail in axial section the fixing the bar to the upper part of the crossing.

    Figure 1, la traversée se présente comme un support disposé au sol et qui s'étend suivant une direction longitudinale et axiale verticale D. Elle comprend une barre métallique 1 conductrice électriquement, par exemple en aluminium, qui s'étend verticalement à l'intérieur d'une enveloppe isolante 2 tubulaire. L'enveloppe peut par exemple être en porcelaine. L'enveloppe repose sur une enceinte métallique 3 posée au sol. Les extrémités de l'enveloppe sont équipées de ferrures 4 et 5, la ferrure 5 servant à l'ancrage de l'enveloppe sur l'enceinte. La ferrure 4 sert à l'ancrage d'une ligne électrique (non représentée) sur le dessus de la traversée.Figure 1, the crossing is presented as a support arranged on the ground and which extends in a direction longitudinal and axial vertical D. It includes a bar metallic 1 electrically conductive, for example aluminum, which extends vertically inside a 2 tubular insulating jacket. The envelope can for example be porcelain. The envelope rests on an enclosure metallic 3 placed on the ground. The ends of the envelope are fitted with fittings 4 and 5, fitting 5 being used to anchoring the envelope to the enclosure. The fitting 4 is used to the anchoring of a power line (not shown) on the above the crossing.

    La barre 1 est reliée électriquement à la ferrure 4 et à un diviseur de tension 6 placé dans l'enceinte 3 sur un support métallique 7 mis à la masse. Le diviseur de tension 6 est constitué de deux blocs de verre cylindriques empilés l'un sur l'autre et séparés par une électrode non représentée.The bar 1 is electrically connected to the fitting 4 and to a voltage divider 6 placed in the enclosure 3 on a metal support 7 grounded. The voltage divider 6 consists of two cylindrical glass blocks stacked one on top of the other and separated by an electrode not represented.

    La barre 1 pénètre à l'intérieur de l'enceinte 3 et repose par son extrémité basse sur le dessus du diviseur de tension 6. Une armature métallique 8 assure l'accouplement électrique et mécanique de la barre et du diviseur de tension. Bar 1 enters inside enclosure 3 and rests by its lower end on the top of the divider tension 6. A metal frame 8 ensures the coupling electrical and mechanical bar and divider voltage.

    Figure 2, l'armature métallique 8 comprend un flasque métallique 9 qui est fixé sur la face supérieure du diviseur de tension. Le flasque présente un bossage central 10 dans lequel est formé un alésage 11 sensiblement tronconique s'étendant suivant la direction longitudinale et laissant un ergot central 12 sensiblement cylindrique s'étendant axialement suivant la direction D. L'alésage tronconique 11 forme une sorte de gorge annulaire dont le fond est plus resserré que l'ouverture, cette gorge entourant donc l'ergot central 12 qui saille du côté de la barre suivant la direction D.Figure 2, the metal frame 8 comprises a flange metal 9 which is fixed on the upper face of the divider Of voltage. The flange has a central boss 10 in which is formed a substantially frustoconical bore 11 extending in the longitudinal direction and leaving a substantially cylindrical central lug 12 extending axially in direction D. Tapered bore 11 forms a sort of annular groove whose bottom is more tightened as the opening, this groove therefore surrounding the lug central 12 which projects from the side of the bar following the direction D.

    L'armature comprend aussi une pièce sensiblement tronconique 13 qui constitue l'extrémité de la barre 1 en contact avec le diviseur de tension. Cette pièce 13 est fendue suivant la direction D et est destinée à s'insérer dans l'alésage 11 du flasque. Elle présente un alésage central 14 sensiblement cylindrique qui s'étend axialement suivant la direction D et dans lequel vient s'engager l'ergot 12.The frame also comprises a part which is substantially frustoconical 13 which constitutes the end of the bar 1 in contact with the voltage divider. This piece 13 is split in direction D and is intended to be inserted in bore 11 of the flange. It has a bore substantially cylindrical central 14 which extends axially following direction D and in which comes to engage lug 12.

    La pièce 13 et le flasque 9 sont conçus pour s'insérer l'un de l'autre avec une certaine résistance à l'insertion de façon à assurer un bon contact électrique et par ailleurs une tenue mécanique sans jeu perpendiculairement à la direction D. En particulier, il faut veiller à ce que les branches 15 de la pièce tronconique appuient de façon élastique sur la paroi de l'alésage 11 lorsque la pièce 13 est engagée dans le bossage 10 et qu'il existe un contact électrique entre l'ergot 12 et la paroi de l'alésage 14.The part 13 and the flange 9 are designed to be inserted each other with some resistance to insertion so as to ensure good electrical contact and also mechanical resistance without play perpendicular to the direction D. In particular, care must be taken to ensure that branches 15 of the frusto-conical part support so elastic on the wall of the bore 11 when the part 13 is engaged in boss 10 and there is contact electric between the lug 12 and the wall of the bore 14.

    Comme on peut le comprendre, la pièce 13 et la barre 1 forment une seule pièce de fonderie ou autre comme le flasque 9 avec son bossage 10.As can be understood, Exhibit 13 and bar 1 form a single piece of foundry or other like the flange 9 with its boss 10.

    Figure 3, l'extrémité basse de la barre 1 est mise en compression suivant la direction D contre le diviseur de tension par l'intermédiaire, par exemple d'un jeu de rondelles élastiques 16 (ou un ressort spirale) montées autour d'un ergot central 17 disposé à l'extrémité supérieure de la barre 1 pour s'engager dans un alésage cylindrique 18 de la ferrure 4.Figure 3, the lower end of the bar 1 is set compression in direction D against the divider of tension through, for example, a set of spring washers 16 (or a spiral spring) mounted around a central lug 17 arranged at the end upper of bar 1 to engage in a bore cylindrical 18 of the fitting 4.

    L'agencement de l'armature selon l'invention ne nécessite donc pas l'utilisation d'un support isolant pour tenir la barre 1 à l'intérieur de l'enveloppe 2, la tenue mécanique de la barre 1 étant assurer d'une part par l'armature 8 et d'autre part par l'ergot 17.The arrangement of the frame according to the invention does not therefore does not require the use of an insulating support for hold the bar 1 inside the envelope 2, hold bar 1 mechanics being provided on the one hand by the frame 8 and on the other hand by the lug 17.

    Claims (1)

    1. A feedthrough for a high-voltage or medium-voltage substation, including a voltage divider (6), a metal bar (1) extending in a longitudinal direction (D) above the voltage divider and a metal coupling (8) for mechanically and electrically connecting one end of the bar to the voltage divider, the feedthrough being characterized in that the coupling comprises:
      a flange (9) with a boss (10) fixed to the top of the voltage divider, the boss having a substantially frustoconical bore (11) extending in the longitudinal direction inside which projects a substantially cylindrical central pin (12); and
      a substantially frustoconical part (13) constituting one end of the bar, this end being split in the longitudinal direction and having a cylindrical central bore (14), the part and the boss being shaped to be inserted one in the other.
    EP99401249A 1998-06-08 1999-05-25 Bushing for high- and middlevoltage station Expired - Lifetime EP0964409B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9807178A FR2779564B1 (en) 1998-06-08 1998-06-08 CROSSING FOR HIGH AND MEDIUM VOLTAGE STATION
    FR9807178 1998-06-08

    Publications (2)

    Publication Number Publication Date
    EP0964409A1 EP0964409A1 (en) 1999-12-15
    EP0964409B1 true EP0964409B1 (en) 2003-12-03

    Family

    ID=9527131

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99401249A Expired - Lifetime EP0964409B1 (en) 1998-06-08 1999-05-25 Bushing for high- and middlevoltage station

    Country Status (7)

    Country Link
    US (1) US6215684B1 (en)
    EP (1) EP0964409B1 (en)
    JP (1) JP2002518821A (en)
    CA (1) CA2300282A1 (en)
    DE (1) DE69913249T2 (en)
    FR (1) FR2779564B1 (en)
    WO (1) WO1999065040A1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2757705A1 (en) 2013-01-22 2014-07-23 ABB Technology AG Medium voltage power line communication coupler

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4002975A (en) * 1976-02-26 1977-01-11 The United States Of America As Represented By The Secretary Of The Interior Electro-optic measurement of voltage on high-voltage power lines
    DE3048285A1 (en) * 1980-12-20 1982-07-29 Friedrich Dr.-Ing. e.h. 8600 Bamberg Raupach MOLDED-INSULATED MEASURING CONVERTER, ESPECIALLY CURRENT AND VOLTAGE CONVERTER
    CH669062A5 (en) * 1986-03-24 1989-02-15 Pfiffner & Co Ag Emil MEASURING CONVERTER FOR HIGH VOLTAGE.
    FR2683939B1 (en) * 1991-11-20 1993-12-31 Gec Alsthom Sa MEDIUM VOLTAGE SELF-DISCONNECTING CIRCUIT BREAKER AND APPLICATION TO A CELL AND A MEDIUM VOLTAGE STATION.

    Also Published As

    Publication number Publication date
    JP2002518821A (en) 2002-06-25
    FR2779564A1 (en) 1999-12-10
    EP0964409A1 (en) 1999-12-15
    US6215684B1 (en) 2001-04-10
    WO1999065040A1 (en) 1999-12-16
    DE69913249D1 (en) 2004-01-15
    CA2300282A1 (en) 1999-12-16
    FR2779564B1 (en) 2000-07-07
    DE69913249T2 (en) 2004-09-09

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