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EP3711071A1 - Traversée à haute tension - Google Patents

Traversée à haute tension

Info

Publication number
EP3711071A1
EP3711071A1 EP17837948.3A EP17837948A EP3711071A1 EP 3711071 A1 EP3711071 A1 EP 3711071A1 EP 17837948 A EP17837948 A EP 17837948A EP 3711071 A1 EP3711071 A1 EP 3711071A1
Authority
EP
European Patent Office
Prior art keywords
voltage
voltage bushing
insulating body
control
bushing
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
EP17837948.3A
Other languages
German (de)
English (en)
Other versions
EP3711071B1 (fr
Inventor
Christian Paul
Sebastian Sendobry
Engelbert Engels
Achim Langens
Joachim Titze
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
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Publication of EP3711071A1 publication Critical patent/EP3711071A1/fr
Application granted granted Critical
Publication of EP3711071B1 publication Critical patent/EP3711071B1/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

Definitions

  • the invention relates to a high-voltage bushing with egg nem inner conductor which extends in a longitudinal direction between egg nem first and second high voltage terminal of the high voltage implementation, as well as with a Isolierkör, which surrounds the inner conductor at least partially, where in the insulating body in a control pad area angeord designated comprising electric field controlling control inserts which are separated from each other by insulating layers, and wherein the control inserts are suitably arranged concentrically around the inner conductor.
  • such a high-voltage bushing has the task of isolating the lying during operation of the high-voltage bushing on egg nem high voltage potential inner conductor of the high voltage implementation of a ground potential environment, such as a wall of a Hochschreibsan.
  • the voltage differences to the ground potential amount to, for example, more than 300 kV, in particular more than 600 kV.
  • the inner conductor is passed through the insulating body.
  • the embedded in the insulating conductive control inserts are used to control the electrical's field, so that a homogenization of the electrical stress is achieved radially and axially within and also outside half of the insulator. In this way, critical electrical loads on the surface and within the insulator can be avoided or at least reduced.
  • the insulating layers of the known high-voltage bushing comprise resin-impregnated crepe paper.
  • the control pad area is that area of the insulating body in which the control inserts are arranged. Usually, the control pad area extends along a part of the inner conductor.
  • the high voltage connection is in Generally understood as a suitably trained connection point, which is suitable for connection to other power lines.
  • the axial control path of the high-voltage bushing ie in particular the length of the Iso lier emotionss depends on the voltage to be isolated.
  • the material costs therefore increase with the voltage to be isolated.
  • large lengths require cost-intensive adaptations with regard to mechanical, for example seismic, stress.
  • the object of the invention is thus to propose an art high voltage implementation, the cost is as low as possible and easy.
  • the object is achieved in such a high-voltage bushing by at least one electrode element which is electrically connected to we least one of the control inserts and led out of the control point area axially.
  • a conductive, low-resistance electrode element is electrically connected to a defined control insert of the field control of the insulating body lier emotionss.
  • the field control can be, for example, capacitive and / or resistive.
  • the Potenzi al can thus be moved axially by means of the electrode element in the desired position. This can advantageously be a comparison of the electrical stress on the high voltage bushing and its environment can be achieved.
  • In within the electrode element and outside of the control unit gene gen Scheme results in a largely cylindrical electrical cal field to the inner conductor. This field passes through the Potential shift only at an axially the Steuerereinlagebe rich opposite end of the electrode element.
  • connection of the at least one electrode element to the control insert can take place, for example, by means of a suitable potential tap.
  • the Potentialanzapfung can un ter using suitable conductive components, such as example of a copper strip, be realized.
  • the mechanical attachment of the electrode element may conveniently be provided un ter using the insulating body.
  • the high-voltage bushing according to the invention is applicable both in stationary electric fields (DC), quasi stationary electric fields (AC) as well as in shock processes.
  • An advantage of the high-voltage feedthrough according to the invention is that the control insert area of the insulating body can be shortened axially by the use of the electrode element. In this way, the previously described surrounded disadvantages, for example, due to the high weight of the insulator and thus the high voltage implementation can be avoided. In addition, new applications can be made possible with the high-voltage bushing according to the invention, for. B. in the voltage range above 1000 kV.
  • the electrode element is at least partially cylindrical, conical or the like and extends in the longitudinal direction of the high-voltage bushing and concentric with the inner conductor.
  • a particularly advantageous field distribution can be achieved.
  • the electrode element at its end facing away from the control of the control area has a rounding to Vermei tion of field strength peaks.
  • the rounding By means of the rounding, disadvantageous field strength peaks at the end of the element element can be avoided.
  • a rounding is in this Related to each rounded profile, eg. B. also in the sense of a person skilled in the known Rogowski profile.
  • a further electrode element is provided, wherein the two Elektrodenele elements are arranged opposite each other to or in Be rich of the two axial ends of the control insert area, wherein both electrode elements in the longitudinal direction of the high voltage feedthrough and concentric with the inner conductor extend.
  • the insulating body or the control pad area can be made shortened at both ends.
  • the Hochwoods screwrite tion is a wall feedthrough, wherein the two high voltage voltage connections are external terminals for connecting to a respective high voltage conductor.
  • the outer terminals may be, for example, outdoor connections.
  • the two electrode elements can be constructed identically.
  • the further electrode element is also led out of the STEU ereinlagen Kunststoff the insulating body axially.
  • the high-voltage conductor can bespielnem part of an open-air line or a busbar or the connection of both.
  • the insulating body comprises a single Wi ckel Economics, the ereinlagen wound on a winding core STEU and insulating layers is formed.
  • the insulating body comprises two con centric winding bodies.
  • the electrode element is led out gen Scheme at a junction of the bobbin from the Steuerereinla gen Scheme.
  • the two winding bodies can be pushed into one another, for example, in the manufacture of the high-voltage bushing.
  • the electrode element may for example be secured mechanically at a location between the winding bodies.
  • the high-voltage bushing can be designed as a plug-in high voltage bushing.
  • the high- Voltage feedthrough a plug-in section, which is set for A stuck the high-voltage feedthrough in a device connection part of an electrical device, wherein the control inserts extend into the plug portion.
  • the electrical device may be, for example, a high voltage transformer.
  • the plug-in portion of the high-voltage bushing and the device connector are designed so staltet that a reliable electrical contact between the inner conductor of the high-voltage bushing and the device is produced connecting part, wherein the device connecting part with other elements of the electrical device, such as in a housing arranged Trans transformer winding , is electrically connected.
  • connection at the interfaces between the device connection part and the plug-in section has sufficient dielectric strength, so that operation at high voltage level is possible.
  • the control inserts extend into the plug portion of the high voltage feedthrough. In this way, the electric 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 feedthrough has improved electrical properties.
  • the insulator further comprises a hardened resin.
  • the high-voltage feedthrough during the manufacturing process for example, after winding the insulating layers, ge be soaked with a thermosetting resin. After curing of the resin can thus be obtained an improved electrically insulating insulator.
  • the insulating body with the resin as the main insulator is in the form of a compact block.
  • the insulating body as a solid block provides a mechanical support for the inner conductor of the high-voltage bushing. In this way, a bending of the inner conductor due to the own weight avoided or reduced ver.
  • the inner conductor supported by the insulating body can thus always along the length thereof provide the intended radial distance to the electrode element. so that the electrical properties are not adversely affected by a possible bending of the inner conductor.
  • the insulating body also serves as a mechanical support member for the Elektrodenelemen te.
  • the secondary insulation preferably comprises an insulating gas. Suitable insulating gases are for. B. SF 6 or air under high pressure.
  • the composite may be, for example, a fiber reinforced plastic.
  • the housing element consists of glass fiber reinforced plastic, whereby a particularly high stability is guaranteed guaranteed.
  • the housing element may be a tube made of glass fiber reinforced plastic.
  • an outer insulation for example, comprises ring-shaped silicone screens.
  • the insulating layers of the insulating body may include paper.
  • the insulating layers can also be taken gefer from a plastic.
  • the insulating layers may comprise a plastic non-woven fabric, which preferably consists of so-called endless filaments.
  • Figure 1 shows a first embodiment of inventions to the invention high-voltage bushing in a schematic cross-sectional view
  • Figure 2 shows a second embodiment of a erfindungsge MAESSEN high-voltage bushing in a schematic
  • Figure 3 shows an enlarged partial view of the high-voltage bushings of Figures 1 and 2 in a schematic cross-sectional view.
  • FIG. 1 shows a high-voltage bushing 1.
  • the high voltage bushing 1 is designed as a wall bushing. This serves to carry out a high-voltage conductor lying in operation at a high voltage of, for example, more than 500 kV through a wall or wall. For example, this is the wall of a HVDC building.
  • the high-voltage feedthrough 1 comprises an inner conductor 2 which is connectable both at a first axial end 3 and at a second axial end 4 of the high-voltage feedthrough 1 to the high-voltage conductor (which is not explicitly illustrated in FIG.
  • the high voltage conductor can because at z. B. part of an open air line or a supply line to a transformer winding or a valve group.
  • the inner conductor 2 is partially enclosed by a spindle-shaped insulating body 5.
  • the insulating body 5 comprises control inserts 27a-e, which are shown in more detail in FIG.
  • the control inserts 27a-e are arranged concentrically around the inner conductor 2 (concentric are generally also understood to mean those control inserts which, as a result of the production, are arranged almost concentrically).
  • the control inserts are used for capacitive and / or resistive field control. They are separated from each other by insulating layers comprising paper or egg nen plastic, such as a plastic nonwoven fabric.
  • the insulating layers are wound on the inner conductor 2. In general, the insulating layers can also be wound up on a separate remaining or removable roll carrier.
  • the insulating body 5 is soaked in a resin after winding the insulating layers and cured, so that the insulator forms a compact block which mechanically supports the inner conductor 2.
  • the insulating body 5 is often referred to times as the main insulation.
  • the region of the Iso lier emotionss 5, in which the control inserts are arranged, is referred to as a control insert portion 26 (see Figure 3).
  • the high-voltage feedthrough 1 further comprises a fastening supply flange 6 for fastening the high-voltage feedthrough to the earth wall or wall.
  • the mounting flange 6 engages mechanically, for example by means of a clamping connection, directly on the insulating body 5.
  • the high-voltage bushing 1 is permitted with a housing 7 from.
  • the housing 7 may, for example, at least in part consist of a composite material, example, of a fiber-reinforced plastic.
  • a secondary insulation 9 is arranged, which consists for example of an insulating gas such as SF 6 .
  • an outer layer in the form of silicone shades 13 is attached.
  • the high voltage feedthrough comprises a first electrode element 12a and a second electrode element 12b.
  • the two electrode elements 12 a and 12 b are cylindrical and con centric to the inner conductor 2 is arranged.
  • Both Elektrodenele elements 12 a and 12 b are electrically connected to one of the Steuereinla and mechanically connected to the insulating body.
  • Each of the electrode elements 12 a and 12 b is led out axially from the Isolierkör by 5.
  • the first electrode element 12a is led out in the direction of the first axial end 3 and the second electrode element 12b in the direction of the second axial end 4 out of the insulating body 5.
  • each of the two electrode elements 12a and 12b extends axially beyond the conically tapering ends 5a and 5b of the isotope. lier emotionss 5 addition.
  • the insulating body 5 forms a mechanical African support for the electrode elements 12 a, b.
  • Each of the two electrode elements 12a and 12b has at one of their ends a rounding 14a or 14b, which serve to avoid field strength peaks.
  • Figure 2 shows a further high-voltage bushing 15, which is designed as a device feedthrough.
  • the high-voltage bushing 1 of Figure 1 and the high-voltage bushing 15 are constructed partially similar. In order to avoid repetition, only their differences will be discussed below. In this case, the same and similar ele ments in the figures 1 and 2 with the same reference numerals ver see.
  • the high-voltage bushing 15 except a first axial end 3, which is also characterized in this case as Freiluftende be, a device-side end 16.
  • a device-side end 16 At the device end 16 of the inner conductor 2 is led out of the Hochschreibs knockmark tion 15 and adapted to be connected to a conductor inside an electrical device, such as a high voltage transformer.
  • an electrical device such as a high voltage transformer.
  • a mounting flange 18 is used for fastening movement of the high-voltage feedthrough 15 to a device housing of the electrical device, which is indicated in Figure 2 by means of a broken line 17.
  • the high-voltage bushing 15 has an open-air side to parent electrode element 12 a.
  • the insulating body 5 comprises conductive control inserts 27a-e.
  • the control inserts are concentrated to each other and arranged to the inner conductor 2. They are separated from each other by insulating layers 28a-d, wherein the insulating layers are wound onto the inner conductor 2 (or on a winding core surrounding the inner layer), so that a winding body 22 is formed, which is resin-impregnated and cured in the manufacturing process.
  • the control inserts 27a-e are each different in length, the length of the STEU ereinlagen with the radial distance from the inner conductor 2 decreases.
  • the boundary of the control insert portion 26 within the bobbin 22, that is the range to which control inserts are provided in the bobbin 22 and extend axially, is in Figure 3 with a line gekennzeich net.
  • the electrode member 12 a is arranged with one end at the connec tion point 24 to the insulating body 5.
  • the electric denelement 12a is electrically connected to the control insert 27b by means of a potential tap 25.
  • the electrode element 12 a is also mechanically held by the resin body of the insulating body 5 in position.

Landscapes

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

Abstract

La présente invention concerne une traversée à haute tension (1) pourvue d'un conducteur interne (2), qui s'étend dans une direction longitudinale entre un premier et un second branchement de haute tension (3, 4) de la traversée à haute tension, ainsi que d'un corps isolant (5) qui entoure au moins partiellement le conducteur interne, le corps isolant comportant, dans une zone de couches intermédiaires de commande (26), des couches intermédiaires de commande à commande par champ (27a-e) qui sont séparées les unes des autres par des couches isolantes. La présente invention est caractérisée par au moins un élément d'électrode (12a) qui est en liaison électrique avec au moins une des couches intermédiaires de commande et sort axialement de la zone de couches intermédiaires de commande.
EP17837948.3A 2017-12-12 2017-12-12 Traversée à haute tension Active EP3711071B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/082450 WO2019114933A1 (fr) 2017-12-12 2017-12-12 Traversée à haute tension

Publications (2)

Publication Number Publication Date
EP3711071A1 true EP3711071A1 (fr) 2020-09-23
EP3711071B1 EP3711071B1 (fr) 2024-07-24

Family

ID=61148163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17837948.3A Active EP3711071B1 (fr) 2017-12-12 2017-12-12 Traversée à haute tension

Country Status (3)

Country Link
EP (1) EP3711071B1 (fr)
CN (1) CN213546021U (fr)
WO (1) WO2019114933A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019220367A1 (de) * 2019-12-20 2021-06-24 Siemens Aktiengesellschaft Hochspannungsdurchführung und Verfahren zu deren Betriebsüberwachung
EP4173100A1 (fr) * 2020-08-13 2023-05-03 Siemens Energy Global GmbH & Co. KG Structure de support pour un conducteur électrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617606A (en) * 1970-06-19 1971-11-02 Gen Electric Shielded bushing construction
JPS58163111A (ja) * 1982-03-23 1983-09-27 株式会社日立製作所 ブツシング
JPS58172817A (ja) * 1982-04-02 1983-10-11 株式会社日立製作所 ガスブツシング
EP2264719B1 (fr) * 2009-06-18 2014-04-02 ABB Technology Ltd Dispositif à haute tension
US10014676B2 (en) 2014-05-12 2018-07-03 Siemens Aktiengesellschaft High-voltage bushing

Also Published As

Publication number Publication date
EP3711071B1 (fr) 2024-07-24
CN213546021U (zh) 2021-06-25
WO2019114933A1 (fr) 2019-06-20

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