EP0152583A2 - Interrupteur à haute tension - Google Patents

Interrupteur à haute tension Download PDF

Info

Publication number
EP0152583A2
EP0152583A2 EP84115216A EP84115216A EP0152583A2 EP 0152583 A2 EP0152583 A2 EP 0152583A2 EP 84115216 A EP84115216 A EP 84115216A EP 84115216 A EP84115216 A EP 84115216A EP 0152583 A2 EP0152583 A2 EP 0152583A2
Authority
EP
European Patent Office
Prior art keywords
switching point
switch
switching
movable
housing
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
EP84115216A
Other languages
German (de)
English (en)
Other versions
EP0152583A3 (en
EP0152583B1 (fr
Inventor
Walter Bischofberger
Heinz Eichholzer
Werner Graber
Jiri Talir
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of EP0152583A2 publication Critical patent/EP0152583A2/fr
Publication of EP0152583A3 publication Critical patent/EP0152583A3/de
Application granted granted Critical
Publication of EP0152583B1 publication Critical patent/EP0152583B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/166—Impedances connected with contacts the impedance being inserted only while closing the switch
    • 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
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/14—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
    • H01H2033/146—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc using capacitors, e.g. for the voltage division over the different switches

Definitions

  • the invention relates to a high-voltage switch according to the preamble of claim 1. Such switches are used to connect high voltage to longer transmission lines.
  • a high-voltage switch according to the preamble of claim 1 is known (EP 0 050 826 A 2, in particular FIG. 3), in which a series circuit comprising an on-resistance and a secondary switching point is connected in parallel to each main switching point.
  • the object of the invention is to simplify the construction of generic switches and to make them cheaper.
  • the advantages achieved by the invention can be seen above all in the fact that only a single secondary switching point is required.
  • the on-resistance which replaces the two on-resistors of the known generic switch, can also be accommodated in a housing, which can be designed as an inexpensive metal housing, in such a way that the insulation gap required between the two connections thereof lies within the housing. This eliminates the need to produce outer insulation sections and it is possible to save on the insulating material housing required in the known generic switch, each containing an on-resistance and a secondary switching section, which results in a considerable reduction in the cost of the switch.
  • the secondary switching point When switched off, i.e. When the main switching points are open, the secondary switching point is completely voltage-free. Accordingly, their switching status is then irrelevant and does not need to be checked. A voltage load of the secondary switching point only occurs briefly during the switch-on process. The insulation load is correspondingly low.
  • a high-voltage switch according to the invention is shown according to a first and a third design in the off state, which basically contains two main switching points la, b and control capacitors 2a, b as well as an on-resistance 3 and a secondary switching point 4.
  • the main switching points la, b and the secondary switching point 4 are actuated by a common drive 5 via a manual transmission 6.
  • the on-resistance 3 and the secondary switching point 4 are parallel to one another between the first main switching point la and the second main switching point 1b.
  • Switching points and gearbox are designed in such a way that when switching on the secondary switching point 4 closes after the main switching points la, b, the switch thus passes through the electrical state shown in FIG .
  • the switch-on state shown in FIG. 1c is reached, in which the on-resistance 3 is bridged by the secondary switching point 4.
  • the secondary switching point 4 opens after the main switching points la, b.
  • the two main switching points la, b in series are designed as high-voltage circuit breakers with porcelain housings, as are known, for example, from Brown Boveri Mitteilungen 3/4 (1981), p. 121, the control capacitors 2a, b also have and are porcelain housings arranged parallel to the main switching points la, b.
  • the housings of the main switching points la, b connect, opposite each other, to a housing 7 filled with SF 6 , which consists of metal, preferably cast aluminum, and which contains the gearbox 6, which has a switching rod 8 made of insulating material with the drive, not shown here 5 is connected.
  • the on-resistance 3 is divided into two columns of resistance elements lying in series.
  • the movable switching element of the first main switching point 1 a and the movable switching element 9 of the secondary switching point 4 are electrically conductively connected to the housing 7.
  • the on-resistance 3 and the secondary switching point 4 are arranged in the housing 7, via which the electrically conductive connection between the first main switching point 1 a and the on-resistance 3 is also established.
  • the one connected to the housing 7 opposite horizontal connection of the on-resistance 3 is on the one hand with the fixed contact piece 10 of the secondary switching point 4 and on the other hand via a connecting conductor 11 with the movable contact piece which is insulated against the housing 7, i.e. only indirectly with the same, via the on-resistance 3 and - if it is closed - the Secondary switch 4, connected second main switch 1b electrically connected.
  • the manual transmission 6 contains two bellcranks 12a, b, which are articulated opposite one another laterally on the selector rod 8 on the housing 7. They are connected on the one hand via lifting rods 13a, b with a piston 14 attached to the shift rod 8 and on the other hand via lifting tubes 15a, b, the lifting tube 15b consisting essentially of insulating material, in each case non-positively connected to the movable switching element of the corresponding main switching point la or lb.
  • the gearbox 6 has a guide part 16 with, at its end, a plunger 17, rigidly connected to the gearshift rod 8 and extending into the interior of the housing 7, which is part of the actuation of the auxiliary switching point 4. Furthermore, the gearbox 6 has a sleeve-shaped centrifugal piston 18, which is guided on the guide rod 16 and which is non-positively connected to the deflection levers 12a, b via driver rods 19a, b.
  • the movable switching element 9 of the secondary switching point 4 is attached to a connecting part which is designed as a hollow cylinder 21 which is slipped over the guide rod 16 and guided in a guide ring 20 which is rigidly connected to the housing 7.
  • the hollow cylinder 21 and the guide rod 16 can be displaced relative to one another to a limited extent in the direction of the switching movements, the displaceability of the guide rod 16 relative to the hollow cylinder 21 in Stop direction limiting stop is formed by the back of the plunger 17 and a pull-out surface 22 facing the inside of the hollow cylinder 21 on a ring 23 which is attached to the end of the latter on the opening side.
  • the inside of the hollow cylinder 21 is delimited by a stop surface 24 on the switch side.
  • the outside of the ring 23 is designed as a centrifugal surface 25 which interacts with the centrifugal piston 18.
  • the guide ring 20 On the switch-off side, the guide ring 20 has a padded stop 26 which interacts with a part of the ring 23 which projects radially outwards.
  • a tension spring 27 anchored on the guide ring 20 is fastened with its opposite end to the movable switching element 9 of the secondary switching point 4.
  • the fixed contact piece 10 of the secondary switching point 4 has a rated current contact with ring-shaped contact fingers 28 which, in the switched-on position, are pressed by means of spring elements 29 against an annular, movable rated current contact 30, which they contact on the outside.
  • the contact fingers 28 have cams 31 which, together with a circumferential bead 32 on the movable nominal current contact 30, behind which they engage, form a catch, which is effective in the switch-on position between the fixed contact piece 10 and the movable contact piece 9 of the secondary switching point 4, in such a way that the engagement withstands the force exerted by the tension spring 27.
  • the contact fingers 28 coaxially surround, at a distance, a tubular, centrally arranged, fixed erosion contact 33, which interacts with a movable erosion contact 34, which is coaxially surrounded by the movable nominal current contact 30 and at a distance.
  • FIGS. 1a-d, 2a, b, 3-6. 6 are on the abscissa the time and on the ordinate plots the strokes of the movable contact pieces of the main switching sections la, b (dash-dotted line) of the centrifugal piston 18 (dashed line) and of the movable contact piece 9 of the secondary switching point 4 (solid line).
  • the designations 2a, l, 2a, r, 2b, l, 2b, r below the abscissa refer to FIGS. 2a, b, left and right halves, which represent the state of the switch at the given time.
  • the brackets below the abscissa with the designations la-ld denote the respective electrical state of the switch, as shown in the figures la-d.
  • the switch Shortly thereafter, at a point in time C, the switch reaches a state in which the main switching points la, b just close and the centrifugal piston 18, which is pulled by the driving rods 19a, b, which in the switched-off position forms an acute angle to the switching rod 8 Income, which has opened further in the course of the switch-on movement, so that the centrifugal piston 18 is now pulled up a relatively large distance on the guide rod 16 even with a small stroke of the shift rod 8, which touches the centrifugal surface 25.
  • the switch assumes the electrical state shown in FIG.
  • the time interval between the closing of the main switching points la, b at time C and the closing of the secondary switching point 4 at time D is approximately 8 ms.
  • the inventive design of the gearbox 6 with the centrifugal piston 18 pulled by the drive rods 19a, b enables the movable contact piece 9 of the secondary switching point 4 to remain in the off position during the switching-on process, while the movable contact pieces of the main switching points la, b each have a first part between run through their switch-off position and their switch-on position and cover the entire distance between their switch-on position and their switch-off position, while the movable switching elements of the main switching points la, b each pass through the remaining part of the distance between their switch-on position and their switch-off position, i.e. with a small remaining stroke the switching rod 8. This means that the maximum distance between the switching elements of the secondary switching point 4 is maintained for a long time and pre-ignition can only start shortly before the closing thereof.
  • the switch-off process is initiated by the beginning of the downward movement of the switching rod 8, which at a point in time F causes the main switching points la, b to open and the arcing of the latter.
  • the control capacitor 2b which together with the control capacitor 2a ensures an even distribution of the voltage between the first main switching point la and the second main switching point 1b, is connected in parallel with the secondary switching point 4 via the housing 7 and the secondary switching point to the second main switching point 1b.
  • FIG. 7 shows a high-voltage switch according to the invention in accordance with a second embodiment, the structure and mechanical function of which correspond completely to the high-voltage switch according to the first embodiment already explained, but differ from the latter by a slightly modified circuit principle, shown in FIG. 8 .
  • the turn-on resistor 3 is in turn divided into two columns, which form two equal partial resistors lying in series, namely a first partial resistor 3a and a second partial resistor 3b.
  • the conductor piece connecting the two partial resistors 3a, b is over a connector 35 is also electrically connected to the metal housing 7.
  • the first main switching point la is connected to the on-resistance 3 and to the movable switching element 9 of the secondary switching point 4 via a first connecting conductor 11a and the second main switching point via a second connecting conductor 11b to the closing resistor 3 and the fixed switching element 10 of the secondary switching point 4.
  • Both main switching points la, b are isolated from the housing 7, i.e. connected to it only indirectly, in each case via one of the partial resistors 3a, b.
  • the guide rod 16 and the centrifugal piston 18 and both lifting tubes 15a, b are made of insulating material.
  • the switch according to the invention according to the second embodiment corresponds practically completely to the switch according to the invention according to the first embodiment.
  • the difference is that if the switch is in the intermediate state shown in FIG. 8, which was run through during the switch-on process with closed main switching points la, b and open secondary switching point 4, i.e. switched-on resistor 3, the potential of the housing 7 is in the middle between the two potentials present at the opposite ends of the on-resistance 3 since half of the voltage across the on-resistance 3 drops across each of the two partial resistors 3a, b.
  • the fixed switching element 10 of the secondary switching point 4 the second main switching point 1b and the connecting conductor 11b connecting the two need only be insulated from the housing 7 for half the switching voltage.
  • a high-voltage switch according to the invention is shown according to a third design. It corresponds completely in terms of its basic structure and its electrical principle and also in terms of its mechanical principle essentially to the high-voltage switch according to the first embodiment explained above.
  • the guide part rigidly connected to the switching rod 8, in the continuation of which extends into the interior of the housing 7, which in turn consists of metal, has an end piece designed as a guide cylinder 16 and which connects the movable switching element 9 of the secondary switching point 4 with the guide cylinder 16 '
  • the connecting part is designed as a connecting rod 21 'which is articulated at one end on the movable switching element 9 and at the opposite end carries an articulated stop piston 17' which is guided in the guide cylinder 16 '.
  • the stop limiting the displaceability of the guide cylinder 16 'with respect to the connecting rod 21' in the switch-off direction is formed by a pull-out surface 22 facing the inside of the guide cylinder 16 'on a ring 23, which is attached to the switch-on end thereof, and the rear side of the stop piston 17'.
  • a stop surface 24 On the switch-off side, the interior of the guide cylinder 16 'is delimited by a stop surface 24.
  • the movable contact piece 9 of the secondary switching point 4 is designed as a knife contact articulated on the housing 7.
  • a tension spring 27 anchored at one end to the housing 7 is attached to the opposite end thereof.
  • the fixed contact piece 10 of the secondary switching point 4 has a fixed nominal current contact with a contact arranged in two opposite rows fingers 28, which in the switched-on position are pressed laterally by spring elements 29 against the movable nominal current contact 30 formed by a section of the switch-on edge of the movable contact piece 9.
  • the contact fingers 28 have cams 31 which, together with two lateral beads 32a, b on the movable nominal current contact 30, behind which they engage, one in the switched-on position against the force of the tension spring 27 between the fixed switching element 10 and the movable switching element 9 of the secondary switching point 4 form effective detents.
  • a pincer-like fixed erosion contact 33 is arranged, which interacts with a fixed erosion contact 33 arranged in the continuation of the movable rated current contact 30 on the movable contact piece 9, which is designed as a cam attached to the switch-on edge of the movable contact piece 3 .
  • An additional contact 36 which likewise has a double row of contact fingers, ensures a good conductive connection between the housing 7 and the movable contact piece 9 of the secondary switching point 4 in the switched-on position.
  • FIGS. 1a-d, 9a, b, 10-12 The function of the switch according to the invention according to the third embodiment, which is essentially analogous to the already explained function of the switch according to the invention according to the first embodiment, is briefly explained below with reference to FIGS. 1a-d, 9a, b, 10-12.
  • the time is plotted on the abscissa in FIG. 10 and the strokes of the movable switching elements of the main switching points la, b (dash-dotted line) and of the moving switching element 9 of the secondary switching point 4 (solid line) are plotted on the ordinate.
  • the designations 9a, 9b below the abscissa refer to FIGS. 9a, b each representing the state of the switch reached at the given time.
  • the Brackets below the abscissa with the designations la-ld again denote the respective electrical state of the switch, as shown in the figures la-d.
  • the switch rod 8 is moved upwards from the position in which it is in the switch-off state shown at time A in FIG. 9a, at time B the stop surface 24 of the guide cylinder 16 'touches the stop piston 17' and shortly thereafter for Time C, the main switching points la, b close, causing the switch to change from the electrical state shown in FIG. 1b to FIG. 1b.
  • the upward movement of the movable switching element 9 of the secondary switching point 4, which only started at time B, leads to contact of the two switching elements thereof at time D, whereby the switch assumes the electrical state according to FIG. 1c.
  • the movable nominal current contact 30 engages with the contact fingers 28 of the fixed nominal current contact of the secondary switching point 4, the switch-on state shown in FIG. 9b has been reached.
  • the third embodiment has the advantage that the conversion of a small residual stroke of the shift rod 8 into a relatively large switching movement of the movable contact piece 9 thanks to its design as a knife contact by a suitable choice of the articulation point of the same on the housing 7 and of the distances between the same and the articulation point of the connecting rod 16 'on the knife contact on the one hand and between the latter and the movable erosion contact 34 and the movable nominal current contact 30 on the other hand. No centrifugal flask is required.
  • the first and the second embodiment enable the movable switching element 9 to be guided more precisely. Thanks to their rotationally symmetrical design, the essential parts of the secondary switching point 4 are easier to manufacture.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
EP84115216A 1984-02-23 1984-12-12 Interrupteur à haute tension Expired EP0152583B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH88484 1984-02-23
CH884/84 1984-02-23

Publications (3)

Publication Number Publication Date
EP0152583A2 true EP0152583A2 (fr) 1985-08-28
EP0152583A3 EP0152583A3 (en) 1986-06-04
EP0152583B1 EP0152583B1 (fr) 1988-06-15

Family

ID=4197415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115216A Expired EP0152583B1 (fr) 1984-02-23 1984-12-12 Interrupteur à haute tension

Country Status (3)

Country Link
US (1) US4636599A (fr)
EP (1) EP0152583B1 (fr)
DE (2) DE3413962A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713392A1 (fr) * 1993-11-30 1995-06-09 Gec Alsthom T & D Sa Mécanisme de manÓoeuvre d'un pôle de disjoncteur à deux chambres de coupure en T ou en V et procédé de montage de ce mécanisme.
EP0779637A3 (fr) * 1995-12-16 1998-11-25 Asea Brown Boveri Ag Disjoncteur avec résistance de fermeture
US9308009B2 (en) 2010-11-05 2016-04-12 Ethicon Endo-Surgery, Llc Surgical instrument with modular shaft and transducer

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1325234C (fr) * 1988-03-28 1993-12-14 Minori Sato Disjoncteur
US5003206A (en) * 1989-09-25 1991-03-26 R. E. Phelon Company, Inc. Integral solenoid and starter motor
FR2674984B1 (fr) * 1991-04-05 1993-06-11 Alsthom Gec Disjoncteur a sf6 a varistance et a condensateur incorpores.
DE4336951A1 (de) * 1993-10-29 1995-05-04 Abb Management Ag Hochspannungsschaltgerät
JPH07320611A (ja) * 1994-05-23 1995-12-08 Hitachi Ltd ガス絶縁開閉装置
CN101728140B (zh) * 2008-10-27 2012-04-18 国网电力科学研究院 一种高压、超高压大电流断路器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227924A (en) * 1960-10-26 1966-01-04 Continental Elektro Ind Ag High voltage power circuit breaker pole units having series breaks
DE1902211B2 (de) * 1969-01-17 1972-07-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hoechstspannungs-leistungsschalter mit einschaltwiderstaenden
EP0050826A2 (fr) * 1980-10-25 1982-05-05 Kabushiki Kaisha Toshiba Interrupteur ayant un arrangement de résistances en parallèle
DE3227466A1 (de) * 1981-09-04 1983-05-26 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Leistungsschalter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH346926A (de) * 1956-09-22 1960-06-15 Bbc Brown Boveri & Cie Elektrischer Leistungsschalter mit parallelen Zweigen
DE1064134B (de) * 1958-05-10 1959-08-27 Voigt & Haeffner Ag Druckluftschalter mit einer ungeraden Zahl von Schaltstellen pro Pol
CH360712A (de) * 1958-06-28 1962-03-15 Bbc Brown Boveri & Cie Leistungsschalter mit niederohmigen Widerstand
DE1141357B (de) * 1961-04-28 1962-12-20 Sachsenwerk Licht & Kraft Ag Lasttrennschalter
US3538278A (en) * 1968-06-13 1970-11-03 Gen Electric High voltage electric circuit breaker
FR2272475B1 (fr) * 1974-05-20 1977-10-21 Alsthom Cgee
GB1525229A (en) * 1974-10-01 1978-09-20 Reyrolle Parsons Ltd High-voltage circuit-interrupters
CH579819A5 (fr) * 1974-11-22 1976-09-15 Bbc Brown Boveri & Cie
JPS52155372A (en) * 1976-06-21 1977-12-23 Hitachi Ltd Electromagnetic buffer gas breaker
JPS5769633A (en) * 1980-10-20 1982-04-28 Hitachi Ltd Resistance breakdown gas breaker
US4488021A (en) * 1981-11-12 1984-12-11 Mitsubishi Denki Kabushiki Kaisha Gas insulated disconnector
JPS59125417A (ja) * 1983-01-07 1984-07-19 Mitsubishi Electric Corp 真空スイツチ式負荷時タツプ切換器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227924A (en) * 1960-10-26 1966-01-04 Continental Elektro Ind Ag High voltage power circuit breaker pole units having series breaks
DE1902211B2 (de) * 1969-01-17 1972-07-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hoechstspannungs-leistungsschalter mit einschaltwiderstaenden
EP0050826A2 (fr) * 1980-10-25 1982-05-05 Kabushiki Kaisha Toshiba Interrupteur ayant un arrangement de résistances en parallèle
DE3227466A1 (de) * 1981-09-04 1983-05-26 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Leistungsschalter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2713392A1 (fr) * 1993-11-30 1995-06-09 Gec Alsthom T & D Sa Mécanisme de manÓoeuvre d'un pôle de disjoncteur à deux chambres de coupure en T ou en V et procédé de montage de ce mécanisme.
EP0779637A3 (fr) * 1995-12-16 1998-11-25 Asea Brown Boveri Ag Disjoncteur avec résistance de fermeture
US9308009B2 (en) 2010-11-05 2016-04-12 Ethicon Endo-Surgery, Llc Surgical instrument with modular shaft and transducer

Also Published As

Publication number Publication date
DE3472182D1 (en) 1988-07-21
EP0152583A3 (en) 1986-06-04
EP0152583B1 (fr) 1988-06-15
DE3413962A1 (de) 1985-08-29
US4636599A (en) 1987-01-13

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