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EP3639282B1 - Conduite haute tension enfichable et appareil électrique comportant une conduite haute tension enfichable - Google Patents

Conduite haute tension enfichable et appareil électrique comportant une conduite haute tension enfichable Download PDF

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Publication number
EP3639282B1
EP3639282B1 EP17739963.1A EP17739963A EP3639282B1 EP 3639282 B1 EP3639282 B1 EP 3639282B1 EP 17739963 A EP17739963 A EP 17739963A EP 3639282 B1 EP3639282 B1 EP 3639282B1
Authority
EP
European Patent Office
Prior art keywords
voltage bushing
section
voltage
housing
plug
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17739963.1A
Other languages
German (de)
English (en)
Other versions
EP3639282A1 (fr
Inventor
Achim Langens
Tim Schnitzler
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.)
HSP Hochspannungsgeraete GmbH
Original Assignee
HSP Hochspannungsgeraete GmbH
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Publication of EP3639282A1 publication Critical patent/EP3639282A1/fr
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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
    • H01F27/02—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
    • H01B17/28—Capacitor type

Definitions

  • the invention relates to a pluggable high-voltage bushing with an inner conductor which extends in a longitudinal direction between a high-voltage connection and a plug-in section of the high-voltage bushing, wherein the plug-in section is designed for inserting the high-voltage bushing into a device connection part of an electrical device, and with an insulating body which encloses the inner conductor.
  • such a high-voltage bushing has the task of isolating the inner conductor of the high-voltage bushing, which is at a high-voltage potential when the high-voltage bushing is in operation, from an environment at earth potential, for example a wall of a high-voltage system.
  • the inner conductor is passed through the insulating body.
  • the plug-in section of the high-voltage bushing and the device connection part are designed in such a way that a reliable electrical contact can be established between the inner conductor of the high-voltage bushing and the device connection part, whereby the device connection part can be connected to further Elements of the electrical device, such as an active part of the electrical device arranged inside the housing, are electrically connected.
  • the connection at the contact surfaces between the device connection part and the plug section is sufficiently dielectrically strengthened so that operation at high voltage level is possible.
  • insulating layers made of paper are usually wrapped around the inner conductor.
  • the object of the invention is to provide a pluggable high-voltage bushing of the type mentioned at the beginning, which has an increased dielectric strength.
  • the textile fabric in the insulating body in addition to or instead of paper.
  • One advantage of the invention is that the textile fabric can prevent or at least reduce the penetration of moisture into the insulating body of the high-voltage bushing. This can improve the electrical properties such as the dielectric strength of the high-voltage bushing.
  • a textile fabric is understood in the sense of the invention as a flat structure, such as a woven fabric, braided fabric or nonwoven fabric.
  • the textile fabric preferably has a water-repellent carrier material so that moisture cannot penetrate the textile fabric. Moisture would lead to a reduction in the dielectric strength.
  • the carrier material is preferably initially designed as a flexible winding layer that is wound around the inner conductor during the manufacture of the high-voltage bushing. The winding is then dipped in liquid resin, which then hardens.
  • the textile fabric is a nonwoven fabric.
  • the nonwoven fabric can, for example, be composed of or comprise fibers or filaments of any length, in particular of a finite length. It is also conceivable that the nonwoven fabric comprises so-called continuous filaments. Continuous filaments are fibers of unlimited length.
  • the nonwoven fabric is a synthetic plastic nonwoven fabric.
  • a plastic nonwoven fabric is characterized by plastic fibers that form the nonwoven material.
  • the insulating body comprises capacitive control inserts which are separated from one another by insulating layers, the insulating layers comprising the nonwoven fabric, and the control inserts being arranged concentrically around the inner conductor and extending into the plug-in section.
  • the capacitive control inserts serve for capacitive field control of the electrical field of the high-voltage bushing during its operation.
  • the control inserts extend into the plug-in section of the high-voltage bushing. In this way, the electrical field can also be effectively controlled in the plug-in area, so that the sensitive area of the connection between the device connection part and the high-voltage bushing has improved electrical properties.
  • the insulating layers made of nonwoven fabric replace the insulating layers made of paper known from the prior art.
  • control inserts have more uniform surfaces than when paper is used. Uniform surfaces of the control inserts result in improved field control due to reduced field increases on the control inserts. This results in a further improvement in the electrical properties of the high-voltage bushing. This advantage is particularly important for pluggable high-voltage bushings because uniform field control in the plug-in section of the high-voltage bushing is particularly important in order to provide the necessary dielectric strength in this limited installation space.
  • the nonwoven fabric comprises a synthetic polymer.
  • the synthetic polymer can be, for example, a polyester, particularly preferably polyethylene terephthalate (PET). Synthetic polymers are apolar and thus moisture-repellent.
  • a radial distance between the control inserts is between 1 mm and 3 mm, particularly preferably between 1.5 mm and 2.5 mm.
  • a variation in the distance is suitably less than 0.5 mm, preferably less than 0.2 mm, particularly preferably less than 0.1 mm.
  • This provides an advantageously smooth surface of the control inserts.
  • the smoothness of the control inserts is influenced in the manufacturing process by a suitable setting of the winding tension when winding up the insulating layers and the control inserts.
  • the insulating body comprises a cured resin.
  • the high-voltage bushing can be During the manufacturing process, for example after winding up the insulating layers, the insulating body is impregnated with a hardenable resin. After the resin has hardened, an insulating body with improved insulation can be obtained.
  • the insulating body is in the form of a compact block, so that main insulation with a gas is not necessary.
  • the high-voltage bushing preferably extends longitudinally over a length of 2 m to 30 m, particularly preferably between 6 m and 10 m. This means that the high-voltage bushing can also be used in particular for operating voltages of more than 500 kV.
  • the inner conductor can be designed as a waveguide or solid conductor.
  • the inner conductor can be made of copper or aluminum, for example.
  • the inner conductor preferably has an outer diameter of at least 5 cm. This means that the high-voltage bushing can also be used with operating currents of more than 2 kA.
  • the plug-in section has an outer coating made of a flexible insulating coating material.
  • the outer coating can, for example, extend to part of the outer surface of the plug-in section, preferably to the part that is in contact with it when the high-voltage bushing is inserted into the device connection part.
  • the coating allows particularly good dielectric strengthening of the joint that is created when it is inserted.
  • the coating preferably comprises silicone.
  • the high-voltage bushing further comprises a fastening flange for fastening the high-voltage bushing to a housing of the electrical device.
  • the invention further relates to an electrical device with a fluid-tight housing and a high-voltage feedthrough.
  • Such a device is from the previously mentioned EN 10 2007 022 641 A1 known.
  • the object of the invention is to provide such a device which has an increased dielectric strength.
  • the high-voltage bushing is a high-voltage bushing according to patent claim 1, wherein a device connection part is provided for receiving and contacting the high-voltage bushing.
  • a receiving section extends from the fastening section of the device connection part into the interior of the housing, wherein the receiving section is made of an insulating material that provides the necessary insulation between the a contact piece at a high-voltage potential and the housing of the electrical device, for example a transformer, which is at an earth potential.
  • the receiving section and the plug-in section are designed to complement each other in shape, so that with the help of the weight of the high-voltage bushing, the plug-in section is pressed firmly against the inner wall of the receiving section in order to ensure sufficient electrical dielectric strength between the high-voltage bushing and the device connection part.
  • the contact part is connected to a winding, for example a winding of a transformer, via a winding connection line extending inside the housing.
  • a winding for example a winding of a transformer
  • the inner conductor of the high-voltage bushing rests against the contact part, so that the high-voltage connection of the high-voltage bushing is connected to a winding of the electrical device via the winding connection line.
  • Figure 1 a partial section of a pluggable high-voltage bushing 1 is shown.
  • the high-voltage bushing is shown in the illustration of the Figure 1 plugged into a device connection part 2 of an electrical high-voltage device in the form of a transformer 3.
  • the device connection part 2 is attached to a housing wall 4.
  • the housing wall 4 is part of a transformer housing of the transformer 3, which is filled with an insulating agent, for example insulating oil.
  • the attachment of the device connection part to the housing is designed to be insulating agent-tight, so that the insulating agent cannot escape from the housing.
  • the device connection part 2 comprises a conductive connection part 14 for establishing an electrical connection between the high-voltage bushing 1 and a winding of the transformer 3 (not shown in the figure), which is arranged inside the housing filled with insulating oil.
  • a gap 12 between the plug section 9 of the high-voltage bushing 1 and the device connection part 2 is filled with a silicone material which dielectrically solidifies the gap 12.
  • a bolt (not visible in the figure) is held as a contact part which, when the high-voltage bushing 25, 26 or 27 is inserted into the respective device connection part 29, is in conductive contact with an inner conductor extending through the respective high-voltage bushing 25-27.
  • the said bolt extends into the interior of the housing 21, i.e. into its oil chamber, where it is in contact with a winding connection line, which thus electrically connects the device connection part 29 to the respective high-voltage or low-voltage winding of the transformer 20.
  • Each device connection part 29 also has a receiving section 36 which consists of an electrically non-conductive material.
  • the receiving section 36 tapers towards a closed end 37.
  • the wall of the receiving section 36 is penetrated by a bolt-shaped contact part 38.
  • the contact part 38 is connected to a winding connection line 40 and a shielding cap 41 as a shield.
  • the winding connection line 40 is also equipped with a current sensor in the form of a current transformer 42 ( Figure 4 ).
  • the current transformer 42 is thus permanently installed in the housing and serves to detect an electrical current flowing via the winding connection line 40 to or from the respective winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (9)

  1. Traversée (1) à haute tension enfichable comprenant
    - un conducteur (5) intérieur, qui s'étend dans une direction longitudinale entre une borne de haute tension et une partie (9) d'enfichage de la traversée (1) en haute tension, dans laquelle la partie (9) d'enfichage est agencée pour l'enfichage de la traversée en haute tension dans une partie (2) de borne d'un appareil (3) électrique, ainsi que
    - un corps (6) isolant, qui entoure le conducteur intérieur, dans laquelle la partie (9) d'enfichage a un revêtement (12) extérieur en une matière de revêtement isolante souple,
    caractérisé en ce que
    le corps isolant comprend une structure textile plane, dans laquelle la structure textile plane est un non tissé, dans laquelle le corps (6) isolant comprend des inserts (7a-c) de commande capacitifs, qui sont séparés les uns des autres par des couches (8a, 6) isolantes, dans laquelle les couches (8a, 6) isolantes entourent le non tissé et dans laquelle les inserts (7a-c) de commande sont disposés concentriquement autour du conducteur (5) intérieur et s'étendent vers l'intérieur dans la partie (9) d'enfichage, dans laquelle le non tissé comporte un polymère synthétique, dans laquelle une distance radiale entre les inserts (7a-c) de commande est comprise entre 1 mm et 3 mm.
  2. Traversée (1) à haute tension suivant la revendication 1, dans laquelle la variation de la distance radiale des inserts de commande est plus petite que 0,5 mm, en particulier plus petite que 0,2 mm.
  3. Traversée (1) à haute tension suivant l'une des revendications précédentes, dans laquelle le corps (6) isolant comprend une résine durcie.
  4. Traversée (1) à haute tension suivant l'une des revendications précédentes, dans laquelle la traversée (1) à haute tension s'étend dans une direction longitudinale sur une longueur de 6 m à 30 m.
  5. Traversée (1) à haute tension suivant l'une des revendications précédentes, dans laquelle le conducteur (5) intérieur a un diamètre d'au moins 5 cm.
  6. Appareil (20) électrique comportant une enveloppe (21) étanche au fluide et une traversée (25) à haute tension suivant l'une des revendications 1 à 4, dans lequel une partie (29) de connexion d'appareil est prévue pour la réception et la mise en contact de la traversée (25) à haute tension.
  7. Appareil électrique suivant la revendication 6, dans lequel la partie (29) de connexion d'appareil est fixée à l'enveloppe (21) au moyen d'une partie (34) de fixation, de laquelle s'étend vers l'intérieur dans l'enveloppe une partie (36) creuse de réception en une matière qui n'est pas conductrice de l'électricité, dans lequel sur une partie d'extrémité fermée rétrécie est disposée une partie (38) métallique de contact, qui traverse la matière isolante de la partie (36) de réception ou qui la prolonge en la partie d'extrémité fermée.
  8. Appareil (20) électrique suivant l'une des revendications 6 ou 7 précédentes, dans lequel la partie (38) de contact est connectée à un enroulement par une ligne (40) de connexion d'enroulement s'étendant à l'intérieur de l'enveloppe.
  9. Appareil (20) électrique suivant l'une des revendications 6 à 8 précédentes, dans lequel la ligne (40) de connexion d'enroulement est équipée d'un capteur (42) de courant.
EP17739963.1A 2017-07-12 2017-07-12 Conduite haute tension enfichable et appareil électrique comportant une conduite haute tension enfichable Active EP3639282B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/067584 WO2019011426A1 (fr) 2017-07-12 2017-07-12 Conduite haute tension enfichable et appareil électrique comportant une conduite haute tension enfichable

Publications (2)

Publication Number Publication Date
EP3639282A1 EP3639282A1 (fr) 2020-04-22
EP3639282B1 true EP3639282B1 (fr) 2024-07-03

Family

ID=59350922

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17739963.1A Active EP3639282B1 (fr) 2017-07-12 2017-07-12 Conduite haute tension enfichable et appareil électrique comportant une conduite haute tension enfichable

Country Status (3)

Country Link
US (1) US11289243B2 (fr)
EP (1) EP3639282B1 (fr)
WO (1) WO2019011426A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017212977A1 (de) * 2017-07-27 2019-01-31 Siemens Aktiengesellschaft Steckbare Hochspannungsdurchführung und elektrisches Gerät mit der steckbaren Hochspannungsdurchführung
WO2021110258A1 (fr) 2019-12-04 2021-06-10 Siemens Aktiengesellschaft Appareil électrique comportant un passage haute-tension enfichable et une pièce de connexion d'appareil destinée à recevoir le passage haute-tension
WO2021115584A1 (fr) 2019-12-11 2021-06-17 Siemens Aktiengesellschaft Traversée haute tension et son procédé de production
DE102020200662A1 (de) * 2020-01-21 2021-07-22 Siemens Aktiengesellschaft Hochspannungsdurchführung und Verfahren zu deren Herstellung
EP3934036B1 (fr) * 2020-06-30 2025-03-19 HSP Hochspannungsgeräte GmbH Traversée haute tension et dispositif électrique haute tension pourvu d'une traversée haute tension
CA3223796A1 (fr) * 2021-06-17 2022-12-22 Siemens Energy Global GmbH & Co. KG Traversee haute tension
CN115410792A (zh) * 2022-08-01 2022-11-29 山东电工电气集团智能电气有限公司 一种即插即用型瓷套管油浸式配电变压器

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Publication number Priority date Publication date Assignee Title
US2322215A (en) 1939-06-13 1943-06-22 Reyrolle A & Co Ltd Electric condenser bushing
SE526713C2 (sv) * 2003-07-11 2005-10-25 Abb Research Ltd Genomföring samt förfarande för tillverkning av genomföringen
EP1622173A1 (fr) * 2004-07-28 2006-02-01 Abb Research Ltd. Traversee haute tension
EP1798740B1 (fr) * 2005-12-14 2011-08-31 ABB Research Ltd. Traversée haute tension
DE102007022641A1 (de) 2007-05-15 2008-11-20 Areva Energietechnik Gmbh Elektrischer Transformator
JP4430692B2 (ja) * 2007-06-22 2010-03-10 昭和電線ケーブルシステム株式会社 ポリマー套管およびこれを用いたケーブル終端接続部
EP2039496A1 (fr) * 2007-09-20 2009-03-25 ABB Research Ltd. Procédé de fabrication d'un produit en caoutchouc
EP2053616A1 (fr) * 2007-10-26 2009-04-29 ABB Research Ltd. Garniture d'étanchéité d'extérieur haute tension
DE102009007583A1 (de) 2009-02-02 2010-08-12 Siemens Aktiengesellschaft Anordnung mit einem Dielektrikum zwischen mindestens zwei leitenden Flächen und Durchführung für hohe Spannungen
EP2264719B1 (fr) * 2009-06-18 2014-04-02 ABB Technology Ltd Dispositif à haute tension
EP2431982B1 (fr) 2010-09-21 2014-11-26 ABB Technology AG Ligne enfichable et installation haute tension dotée d'une telle ligne
CN103597553B (zh) * 2011-06-09 2016-06-08 Abb技术有限公司 用于中空圆柱形绝缘体外壳的安装凸缘的强化元件
US8716601B2 (en) * 2012-02-08 2014-05-06 General Electric Company Corona resistant high voltage bushing assembly
DE102012204052B4 (de) * 2012-03-15 2022-12-29 Siemens Energy Global GmbH & Co. KG Hochspannungsdurchführung mit leitenden Einlagen für Gleichspannung und Verfahren zu ihrer Herstellung

Also Published As

Publication number Publication date
WO2019011426A1 (fr) 2019-01-17
US20200168370A1 (en) 2020-05-28
EP3639282A1 (fr) 2020-04-22
US11289243B2 (en) 2022-03-29

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