EP2715743A1 - Composant électrique pour installation haute tension - Google Patents

Composant électrique pour installation haute tension

Info

Publication number
EP2715743A1
EP2715743A1 EP12712246.3A EP12712246A EP2715743A1 EP 2715743 A1 EP2715743 A1 EP 2715743A1 EP 12712246 A EP12712246 A EP 12712246A EP 2715743 A1 EP2715743 A1 EP 2715743A1
Authority
EP
European Patent Office
Prior art keywords
conductor
control electrode
hood
component according
electrically conductive
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
EP12712246.3A
Other languages
German (de)
English (en)
Other versions
EP2715743B1 (fr
Inventor
Ansgar Dais
Urs Kruesi
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.)
ABB Schweiz AG
Original Assignee
ABB Technology 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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP12712246.3A priority Critical patent/EP2715743B1/fr
Publication of EP2715743A1 publication Critical patent/EP2715743A1/fr
Application granted granted Critical
Publication of EP2715743B1 publication Critical patent/EP2715743B1/fr
Active 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
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring

Definitions

  • the present invention relates to an electrical component for a high-voltage installation, comprising in coaxial arrangement:
  • a rigid insulator attached to the conductor and comprising the conductor, comprising a solid polymer composition formed by curing a preformed, flowable polymer composition
  • Such an electrical component connects after installation in the high-voltage system, a conductor of a first part of the system, with a solid, liquid or gaseous insulating against an insulating receiving
  • Encapsulation is electrically insulated, with a conductor of a second part of the
  • This conductor is typically electrically isolated by the surrounding air, but may also be insulated with another insulating means contained in an enclosure receiving the conductor. Is the electrical component as a barrier insulator of a gas-insulated, metal-enclosed
  • Switchgear designed so separates such a partition insulator two insulating gas-filled spaces of the system from each other and connects two provided in the two rooms high-voltage current conductor together.
  • Rooms of the high voltage system is an electrical field during operation of the system exposed, which acts between the high-voltage conductors and the encapsulation resp. the electrically connected to the enclosure and therefore held substantially at ground mounting flange.
  • the electrical component therefore has a control electrode which is guided in a cylindrically symmetrical manner about this current connection, which dielectrically shields this connection and makes the electric field uniform.
  • An electrical component of the type mentioned at the outset is described, for example, in EP 1 284 484 B1, EP 1 417 689 B1, EP 1 771 866 B1 and WO 2009/053147 A1.
  • the described implementation is intended for installation in a generally metallic housing of a high voltage electrical apparatus, for example in a transformer housing.
  • This implementation contains in a coaxial arrangement a lengthwise axis extending on high voltage potential conductor, a fixed to the conductor and the conductor comprising a rigid insulating body and attached to the insulating body outside, on Erdpotial feasible
  • the mounting flange separates a lying in air and above the mounting flange
  • Section of the capacitor winding of a portion of the capacitor winding which is located below the mounting flange and after installation of the
  • Control electrode is used for the homogenization of the electric field at the aforementioned junction to the conductor of the high voltage apparatus.
  • the shielding can be integrated into a porcelain insulator as shown in EP 1 284 484 B1 and EP 1 771 689 B1 or can be made of silicone and can be mounted on one be attached to fiber reinforced plastic pipe. However, it can also - as described in EP 1 417 689 B1 and WO 2009/053147 A1 - be applied directly to the outer surface of the capacitor winding accommodating insulator between the mounting flange and a power connection of the leadthrough.
  • WO 2004/001783 A1 discloses a molded plastic part
  • the invention as indicated in the claims, has the object to provide an electrical component of the type mentioned, which is easy to manufacture and at the same time characterized by a high level of operational reliability.
  • an electrical component for a high voltage installation having in coaxial arrangement a current-carrying high voltage potential conductor along an axis and a rigid insulator attached to the conductor and comprising the conductor, containing a solid polymer mass obtained by curing a preformed one , Flowable polymer composition is formed, a mounted on the insulating body outside, at ground potential feasible mounting flange and an electrically conductive connected to the conductor and attached to one end of the conductor, hood-shaped control electrode, the electric field between the conductor and the mounting flange during operation of the system controls.
  • control electrode is not detachable with the
  • control electrode is formed elastically deformable and has a hood made of an elastomeric plastic and at least on the outwardly facing surface of the hood, a coating of a cured, electrically conductive or electrically non-conductive paint is applied.
  • control electrode of both alternative solutions can be produced with little effort and integrated into the electrical component. It will be like that
  • Control electrode by co-preforming and curing of the flowable polymer composition, typically in a mold made.
  • control electrode can give way to an undesired mechanical load, such as a shock. It is thus an unintentional and possibly not directly visible damage to the control electrode, such as during transport or during assembly, during operation or during maintenance of the electrical component, largely avoided. Therefore, the control electrode of the second alternative solution increases the reliability of the electrical component according to the invention.
  • the non-detachable connection may be embodied as an embedding, in which an end of the conductor carrying the control electrode is embedded in the hood produced by glazing.
  • the elastomeric plastic may be electrically conductive and contain at least one filler having electrically conductive particles.
  • the elastomeric plastic but also electrically non-conductive and the coating be electrically conductive.
  • the elastomeric plastic may contain silicone or EPDM.
  • control electrode can be releasably connected to the conductor and can be designed with advantage as a snap or screw connection.
  • the hood may be non-detachably connected to the conductor and may advantageously be embodied as an adhesive bond or as an embedding, in which an end of the conductor carrying the control electrode is embedded in the hood produced by glazing or shrinking.
  • the hood and a shield applied to the insulator may together contain an electrically nonconductive, elastomeric plastic which, when finished, hardens one into a mold
  • Capacitor coil to be embedded with each other electrically isolated
  • Capacitor pads in the radial direction by a wound around the axis insulating or by several guided around the axis of a layer
  • thread-wound winding body are held at a distance from each other.
  • the electrical component may be a passage of the high-voltage system or a barrier insulator of a gas-insulated and metal-enclosed high-voltage system.
  • FIG. 1 shows a plan view of an axis A along an extended embodiment
  • a trained as a passage electrical component according to the invention which is shown partially cut to the right of the axis, 2 shows an enlargement of a portion of the electrical component according to FIG.
  • FIG. 3 shows a part of a second embodiment of the electrical component according to the invention shown in FIG. 2, FIG.
  • FIG. 4 shows a part of a third embodiment of the electrical component according to the invention shown in FIG. 2, and FIG.
  • FIG. 5 shows a part of an embodiment along the axis A of the embodiment of a formed as a barrier insulator electrical component according to the invention shown in Figures 2 to 4.
  • FIGS. 1 and 2 designate like-acting parts.
  • the implementation shown in FIGS. 1 and 2 comprises, in a coaxial arrangement, the following parts: a current conductor 10 guided along the axis A and having a first one
  • Power connection serving lower end 12 a fixed to the conductor 10 and the conductor comprising rigid insulating body 20, a fixed to the insulating body 20 and held by the insulating body at a distance from the conductor 10 mounting flange 30, which during installation of the
  • Conductor 10 electrically conductively connected flange 1 1 a extends.
  • the current conductor 10 which is generally designed as a tube or a round rod, can with its lower end 12 with one end in the aforementioned
  • the insulating body 20 surrounding typically made of porcelain or a weather-resistant plastic, such as based on silicone, EPDM or cycloaliphatic epoxy, existing shield 60 serves as weather and radiation protection.
  • the capacitor winding 40 has electrically isolated from each other
  • Capacitor pads 41 which are held in the radial direction at a distance from each other.
  • the insulating gap is achieved by a wound in the form of a spiral insulating 42, which typically consists of paper and / or plastic, or by a plurality of guided around the axis A layers of a thread wound package.
  • the capacitor winding 40 serves to control an electric field which is formed during operation of the bushing between the then at high voltage potential located conductor 10 and then located on the potential of the metal housing mounting flange 30.
  • Condenser coils 40 are embedded in a generally filler-containing solid polymer mass 21, which is typically an epoxy filled with a mineral powder.
  • the control electrode 50 has a hood 51 made of plastic. From Fig.2 it can be seen that at least on the up, down and out facing, so at least on the entire outer surface of the hood 51, a coating 52 is applied from a cured lacquer.
  • the control electrode 50 is at the potential of the current conductor 10. This can be done by a the hood 51 forming, electrically conductive
  • Plastic for example by means of electrically conductive particles, such as graphite, metal or metal oxide powder, filled polymer can be achieved.
  • this can also be achieved in that the cured coating forming the coating 52 is electrically conductive, regardless of whether the hood 51 is made of an electrically conductive or an electrically non-conductive plastic.
  • the coating 52 of the electrically conductive or electrically non-conductive lacquer smoothes unavoidable surface roughness of the hood 51. It is thus achieved a particularly fine control of the occurring during operation of the high voltage system electrically conductive field, which between the
  • the metal housing electrically connected to this flange acts.
  • the coating 52 is formed by the hardened conductive ink, electrically conductive particles of the paint located at high-voltage potential are embedded in the polymeric matrix, and even then the unwanted leakage of electrons is considerably reduced.
  • the hood is mounted in axial symmetry arrangement at the lower end of the conductor 10 and shields with its downwardly open, spherically curved wall from a current conductor connection, arranged with the current conductor 10 with its lower end 12 to the end of the aforementioned, in a insulator-filled metal housing Conductor of the electrical apparatus is electrically connected.
  • control electrode 50 is non-detachably connected to the current conductor 10.
  • the non-detachable connection is embodied as an embedding, in which the end 12 of the current conductor 10 carrying the control electrode 50 is embedded in the hood 51 made by glazing.
  • the hood 51 is formed of an elastomeric plastic. The hood 51 can then by entering a flowable starting material in a
  • a hood 51 and possibly also a shield 60 is simultaneously formed in the casting mold reached from the elastomeric plastic.
  • the shield 60 is then poured directly (not shown in Figure 1) on the rigid insulating body 20.
  • the flowable starting material comprises a plastic containing electrically conductive particles
  • the hood 51 can be used as a control electrode 50 after applying a coating 52 of a cured, electrically non-conductive paint on the outwardly facing surface of the hood.
  • the hood 51 and the shielding have been formed together in a casting mold, then the hood 51 is to be provided with a coating 52 of a hardened, electrically conductive lacquer, at least on the outwardly facing surface.
  • a coating 52 of a hardened, electrically conductive lacquer at least on the outwardly facing surface.
  • the control electrode 50 can deform elastically. Damage to the
  • Suitable elastomers are, above all, silicone and EPDM, but also elastomeric thermoplastics, such as thermoplastic
  • the hood 51 may also be formed in a mold forming the rigid insulating body 20 and the hood 51, if appropriate also the shielding 60, into which, as described for example in WO 2009/053147 A1, a casting conductor 10 and the capacitor winding 40 are contained Winding body arranged and impregnated under vacuum with the flowable polymer composition. Subsequently, the flowable polymer composition in the casting mold to form the solid polymer mass 21 and thus also to form the rigid insulating body 20 and the dimensionally stable hood 51, optionally also the shield 60, cured. In the thus formed, the conductor 10, the
  • Insulating body 20, the capacitor winding 40, the hood 51 and optionally also the shield 60 containing molded body is machined a seat for the mounting flange 30 and is applied at least on the outer surface of the hood 51 of the coating 52, such as with the aid of Leitlacks.
  • connection between the lower end of the conductor 12 and the control electrode 50 is detachably formed.
  • the releasable connection is as
  • control electrode 50 has a thread 54 which is screwed onto a mating thread 14 which in the End 12 of the conductor is formed.
  • the releasable connection can also be designed as a snap connection.
  • the control electrode 50 has an annular inner edge 53 which snaps when sliding the separately manufactured control electrode 50 in an annular groove 13 which is formed in the lower end 12 of the conductor.
  • a guided conductor of the high voltage system such as by plugging, are electrically connected.
  • a further control electrode can also be arranged at the right end, not shown, of the lead-out conductor 20, which is not shown.
  • the control electrode 50 is connected to the conductor 10 by being snapped on, that is releasably. But it can also be connected in a non-detachable manner with the conductor 10.
  • the hood 51 is then manufactured during the casting of the intended for the production of the insulating body 20 flowable polymer composition.
  • the solid polymer mass 21 of the hood 51 then embeds the end 12 of the conductor 10 to form the non-releasable connection.
  • Control electrode 50 only at the lower resp. left 12 or at the top resp. be attached to the right end 1 1 of the conductor 1 1, or may be attached to each of the two ends 1 1, 12 each have a control electrode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)

Abstract

L'invention concerne un composant électrique pour une installation haute tension. Ledit composant électrique comporte, dans une disposition coaxiale, un conducteur (10) s'étendant le long d'un axe (A) et pouvant être porté au potentiel haute tension et un corps isolant (20) rigide fixé au conducteur (10) et entourant le conducteur, une bride de montage (30) fixée au corps isolant (20) et pouvant être portée au potentiel de terre, ainsi qu'une électrode de commande (50) en forme de calotte connectée de manière électroconductrice au conducteur (10) et fixée sur une extrémité (12) du conducteur (10). Le corps isolant (20) contient une masse polymère rigide (21) formée par durcissement d'une masse polymère coulante préformée. Lorsque l'installation est en fonctionnement, l'électrode de commande (50) commande le champ électrique entre le conducteur (10) et la bride de montage (30). L'invention vise à permettre de fabriquer le composant électrique d'une manière simple et à augmenter la sécurité de fonctionnement du composant. A cet effet, l'électrode de commande (50) est connectée de manière indétachable au conducteur (10) et comporte une calotte (51) composée de la masse polymère rigide (21), formée lors du préformage et du durcissement de la masse polymère coulante, indéformable et revêtue au moins à l'extérieur d'un vernis conducteur (52). En variante, l'électrode de commande (50) est élastiquement déformable et comporte une calotte (51) en matériau élastomère, revêtue d'un vernis (52) conducteur ou non conducteur.
EP12712246.3A 2011-05-27 2012-03-26 Composant électrique pour installation haute tension Active EP2715743B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12712246.3A EP2715743B1 (fr) 2011-05-27 2012-03-26 Composant électrique pour installation haute tension

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11167911 2011-05-27
PCT/EP2012/055317 WO2012163561A1 (fr) 2011-05-27 2012-03-26 Composant électrique pour installation haute tension
EP12712246.3A EP2715743B1 (fr) 2011-05-27 2012-03-26 Composant électrique pour installation haute tension

Publications (2)

Publication Number Publication Date
EP2715743A1 true EP2715743A1 (fr) 2014-04-09
EP2715743B1 EP2715743B1 (fr) 2020-03-04

Family

ID=45930663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12712246.3A Active EP2715743B1 (fr) 2011-05-27 2012-03-26 Composant électrique pour installation haute tension

Country Status (4)

Country Link
US (1) US20170104279A9 (fr)
EP (1) EP2715743B1 (fr)
CN (1) CN103563013B (fr)
WO (1) WO2012163561A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9870847B2 (en) 2012-12-13 2018-01-16 Abb Schweiz Ag High voltage device and a method of manufacturing a high voltage device
CN104821214B (zh) * 2015-04-14 2017-11-03 苏州翰为电气科技有限公司 一种液浸电力设备引出线用固体绝缘端子
CN104966549A (zh) * 2015-07-06 2015-10-07 苏州翰为电气科技有限公司 一种环氧树脂干式套管
EP3402027B1 (fr) * 2017-05-08 2020-12-09 ABB Power Grids Switzerland AG Agencement d'isolation haute tension pour isolation d'un conducteur d'un système à isolation gazeuse en courant continu et système isolé au gaz pour fonctionnement en courant continu comprenant un agencement d'isolation haute tension
CN112271676B (zh) * 2020-11-13 2024-05-24 中国电力工程顾问集团西南电力设计院有限公司 一种高海拔地区500千伏悬垂挂板及v型悬垂结构

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Also Published As

Publication number Publication date
WO2012163561A1 (fr) 2012-12-06
CN103563013A (zh) 2014-02-05
EP2715743B1 (fr) 2020-03-04
US20140080356A1 (en) 2014-03-20
CN103563013B (zh) 2016-01-20
US20170104279A9 (en) 2017-04-13

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