SE457487B - Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear - Google Patents

Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear

Info

Publication number
SE457487B
SE457487B SE8701771A SE8701771A SE457487B SE 457487 B SE457487 B SE 457487B SE 8701771 A SE8701771 A SE 8701771A SE 8701771 A SE8701771 A SE 8701771A SE 457487 B SE457487 B SE 457487B
Authority
SE
Sweden
Prior art keywords
flange
insulator
bushing
metal
cable
Prior art date
Application number
SE8701771A
Other languages
Swedish (sv)
Other versions
SE8701771L (en
SE8701771D0 (en
Inventor
S Norgren
Original Assignee
Asea Ab
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 Asea Ab filed Critical Asea Ab
Priority to SE8701771A priority Critical patent/SE457487B/en
Publication of SE8701771D0 publication Critical patent/SE8701771D0/en
Publication of SE8701771L publication Critical patent/SE8701771L/en
Publication of SE457487B publication Critical patent/SE457487B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/0358—Connections to in or out conductors
    • 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

Landscapes

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

Abstract

Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear with a tubular insulator (2), a flange (3) positioned on one end of the insulator (2), and a conductor (5) running centrally through the flange (3) and the insulator (2), which at least through the flange (3) and a bit on both sides of this consists of a high-voltage wire (6) insulated with solid insulation material. Stress cones (8) are positioned around the wire (6) on both sides of the flange (3) with their base to the flange (3) to maintain a gas-tight seal between the spaces on both sides of the flange (3).<IMAGE>

Description

457 487 2 att bilda en fältstyrande elektrod. Vidare kan de s k gummistresskonernas yttre utspänning beläggas med elledande material. 457 487 2 to form a field control electrode. Furthermore, the outer tension of the so-called rubber stress cones can be coated with conductive material.

Uppfinningen förstås enklast under hänvisning till bifogade figurer 1 och 2.The invention is most readily understood by reference to the accompanying Figures 1 and 2.

I figur 1, som visar en genomföring från SF6-ställverk till luft, beteck- nar l GIS-ställverkets metallkapsling. Genomföringen består av en isolator 2 av porslin som nedtill är försedd med en fläns 3. Flänsen 3 är fastskru- vad kring en öppning 4 i metallkapslingen 1. Genom isolatorn 2 och flänsen 3 löper en central ledare 5. En del av denna ledare 5 genom flänsen 3 och en bit på ömse sidor om denna utgöres av en med fast isolermaterial, före- trädesvis tvarbunden polyeten, isolerad högspanningskabel 6. Kabeln 6 kan lämpligen vara av PEX-typ.In Figure 1, which shows a lead-through from SF6 switchgear to air, 1 denotes the metal enclosure of the GIS switchgear. The bushing consists of an insulator 2 of porcelain which at the bottom is provided with a flange 3. The flange 3 is screwed around an opening 4 in the metal housing 1. A central conductor 5 runs through the insulator 2 and the flange 3. the flange 3 and a piece on either side of this consist of a high-voltage cable 6 insulated with solid insulating material, preferably cross-linked polyethylene. The cable 6 may suitably be of the PEX type.

Flänsen 3 är runt kabeln 6 försedd med uppkragningar 7 både uppåt och nedåt. Dessa.uppkragningar 7 kan utformas så att de tillsammans med flänsen 3 bildar en fältstyrande elektrod som ombesörjer att lämplig spänningsfördelning erhålles i genomföringen.The flange 3 is provided around the cable 6 with hooks 7 both upwards and downwards. These openings 7 can be designed so that together with the flange 3 they form a field-controlling electrode which ensures that a suitable voltage distribution is obtained in the bushing.

I syfte att ytterligare elektriskt påkänningsavlasta kabelns 6 genomgång av flänsen 3 pàtryckes kabeln stresskoner 8 av gummi eller liknande mate- rial. Konerna 8 är vid basen försedda med spår 9, 1 vilka uppkragningarna 7 griper in. För att ytterligare säkerställa en avtätning vid flänsen 3 kan ett ej visat klämband läggas runt konernas 8 bas. Det är vidare vik- tigt att kabeln 6 där denna avslutas i genomföringen, för att antingen _ anslutas till en GIS-ledare eller en ledarstav 10 till en yttre anslutning 11, förses med ordentliga tätningar 12 mellan kabelisolation och ledare.In order to further electrically stress relieve the cable 6 through the flange 3, the cable is pressed onto stress cones 8 of rubber or similar material. The cones 8 are provided at the base with grooves 9, 1 which the hooks 7 engage. To further ensure a seal at the flange 3, a clamping band (not shown) can be laid around the base of the cones 8. It is further important that the cable 6, where it terminates in the bushing, in order to be connected either to a GIS conductor or a conductor rod 10 to an external connection 11, is provided with proper seals 12 between the cable insulation and the conductor.

Anslutningen till GIS-ledaren betecknas med 13.The connection to the GIS leader is denoted by 13.

Genom att fullständig avtätning på ett enkelt sätt erhållits mellan metallkapslingen 1 och isolatorn 2 kommer isolatorn 2 ej att utsättas för några större mekaniska påkänningar. Det kan dock, med tanke på de tryck- stötar som kan förekomma i det tryckgasfyllda systemet, vara lämpligt att via anslutningen 13 förankra kabel 6 och ledarstav 10 i en GIS-ledare i metallkapslingen 1. I annat fall kan om inga andra åtgärder vidtages kabeln 6 under olyckliga omständigheter tryckas i riktning ut från metall- kapslingen 1.By obtaining a complete seal in a simple manner between the metal housing 1 and the insulator 2, the insulator 2 will not be subjected to any major mechanical stresses. However, in view of the pressure shocks that may occur in the pressurized gas-filled system, it may be appropriate to anchor cable 6 and conductor rod 10 in a GIS conductor in the metal housing 1 via the connection 13. Otherwise, if no other measures can be taken, the cable 6 in unfortunate circumstances is pushed in the direction out of the metal housing 1.

Claims (2)

3 457 487 Figur 2 visar en annan utföringsform av uppfinningen och avser en genom- föring från tryckgas till vätska, i detta fall från ett GIS-ställverk till en transformator med lindningarna 1 olja. Genomföringen som konstruerats efter samma principer som den i figur 1 visade har försetts med samma beteckningar som i figur 1. lfl betecknar isolatorns inre volym som inne- håller lämplig isolerande vätska, Det är givetvis tänkbart att även fylla den med SF6-gas av lägre tryck. I dessa fall kan det för övrigt vara lämpligt att tillverka isolatorn 2 av ett epoxiharts. Även isolatorn 2 i figur 1 kan givetvis fyllas med SF6-gas av lämpligt tryck. PATENTKRAVFigure 2 shows another embodiment of the invention and relates to a bushing from pressurized gas to liquid, in this case from a GIS switchgear to a transformer with the windings 1 oil. The bushing, which is designed according to the same principles as the one shown in Figure 1, has been given the same designations as in Figure 1. l in denotes the internal volume of the insulator which contains a suitable insulating liquid. . In these cases, it may otherwise be appropriate to manufacture the insulator 2 from an epoxy resin. The insulator 2 in figure 1 can of course also be filled with SF6 gas of suitable pressure. PATENT REQUIREMENTS 1. Elektrisk högspänningsgenomföring för ett metallkapslat tryckgas- isolerat stallverk omfattande en rörformig isolator (2), en på isolatorns ena ände anordnad fläns (3) för montering av genomföringen i en öppning i ställverkets jordade metallkapsling, en genom fläns (3) och isolator (2) centralt löpande ledare (5), k ä n n e t e c k n a d därav, att ledaren (5) åtminstone genom flänsen (3) och en bit på ömse sidor om denna utgöres av en med fast isolermaterial. företrädesvis tvärbunden polyeten, isolerad högspänningskabel (6), nämnda fläns (3) på ömse sidor försedd med en cir- kulär uppkragning (7) runt kabeln (6) samt att päkänningsavlastande koner (8) av elastiskt material anbringats runt kabeln (6) på ömse sidor om flänsen (3) med basen mot flänsen (3), varvid nämnda uppkragningar (7) griper in i spår (9) upptagna i konernas (8) bas i och för erhållande av gastät avtätning mellan utrymmena pa ömse sidor om genomföringens fläns (s). “High-voltage electrical bushing for a metal-encapsulated pressurized gas-insulated stable comprising a tubular insulator (2), a flange (3) arranged on one end of the insulator for mounting the bushing in an opening in the grounded metal housing of the switchgear, a through flange (3) and insulator ( 2) centrally running conductor (5), characterized in that the conductor (5) consists at least through the flange (3) and a piece on either side of it of a solid insulating material. preferably cross-linked polyethylene, insulated high-voltage cable (6), said flange (3) on both sides provided with a circular bracket (7) around the cable (6) and that stress-relieving cones (8) of elastic material are applied around the cable (6) on both sides of the flange (3) with the base against the flange (3), said hooks (7) engaging in grooves (9) received in the base of the cones (8) in order to obtain a gas-tight seal between the spaces on either side of the flange of the bushing. (s). “ 2. Elektrisk högspänningsgenomföring enligt patentkrav 1. k ä n n e - t e c k n a d därav, att flänsen (3) består av metall och att flänsens uppkragningar (7) utformats att bilda en fältstyrande elektrod.High-voltage electrical bushing according to Claim 1, characterized in that the flange (3) consists of metal and in that the flanges (7) of the flange are designed to form a field-controlling electrode.
SE8701771A 1987-04-29 1987-04-29 Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear SE457487B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8701771A SE457487B (en) 1987-04-29 1987-04-29 Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8701771A SE457487B (en) 1987-04-29 1987-04-29 Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear

Publications (3)

Publication Number Publication Date
SE8701771D0 SE8701771D0 (en) 1987-04-29
SE8701771L SE8701771L (en) 1988-10-30
SE457487B true SE457487B (en) 1988-12-27

Family

ID=20368354

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8701771A SE457487B (en) 1987-04-29 1987-04-29 Electric high voltage bushing for a metal-enclosed pressure-gas insulated switchgear

Country Status (1)

Country Link
SE (1) SE457487B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO338328B1 (en) * 2006-01-26 2016-08-08 Schlumberger Technology Bv Contact pin assembly for a high voltage electrical contact

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO338328B1 (en) * 2006-01-26 2016-08-08 Schlumberger Technology Bv Contact pin assembly for a high voltage electrical contact

Also Published As

Publication number Publication date
SE8701771L (en) 1988-10-30
SE8701771D0 (en) 1987-04-29

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