EP0138743B1 - Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé - Google Patents

Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé Download PDF

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Publication number
EP0138743B1
EP0138743B1 EP84730082A EP84730082A EP0138743B1 EP 0138743 B1 EP0138743 B1 EP 0138743B1 EP 84730082 A EP84730082 A EP 84730082A EP 84730082 A EP84730082 A EP 84730082A EP 0138743 B1 EP0138743 B1 EP 0138743B1
Authority
EP
European Patent Office
Prior art keywords
switching pin
spring
movable main
main switching
lever
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.)
Expired
Application number
EP84730082A
Other languages
German (de)
English (en)
Other versions
EP0138743A1 (fr
Inventor
Dieter Dipl.-Ing. Lorenz
Willi Olsen
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0138743A1 publication Critical patent/EP0138743A1/fr
Application granted granted Critical
Publication of EP0138743B1 publication Critical patent/EP0138743B1/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
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact

Definitions

  • the invention relates to a disconnector for metal-encapsulated, pressurized gas-insulated high-voltage switchgear, with a separating section located between field electrodes, which can be bridged by a tubular movable main switch pin, the fixed mating contact of which is also tubular, and in which the movable main switch pin contains an auxiliary switch pin which can be moved by a spring , whose counter-contact is in the fixed counter-contact of the main switching pin, whereby a movement of the auxiliary switching pin relative to the movable main switching pin can be triggered by a mechanical control located inside the one field electrode, which movement is faster than that of the movable main switching pin.
  • Such a circuit breaker for metal-enclosed, in particular with SF 6 compressed gas insulated high-voltage switchgear is known from DE-A-31 22 442.
  • This known disconnector is provided with a relatively slow drive for the movable main switch pin.
  • the auxiliary switching pin is therefore provided to bridge the isolating distance when the isolating switch is switched off by remaining in the mating contact until the movable main isolating pin has reached a position which forms an isolating distance which is sufficiently large for the dielectric strength.
  • the mechanical control here by means of stops and pawl, triggers the release of the auxiliary switching pin from the mating contact and the auxiliary switching pin is returned to it by a previously tensioned spring at a greater speed than the movement of the movable main switching pin. If a switch-off arc of low amperage arises, this is quickly interrupted due to the high speed at which the auxiliary switching pin and jack are separated and no longer has the time to migrate properly and initiate an earth fault. Since the auxiliary switching pin and its counter-contact are in the rest position, ie in the switched-off position, inside the field electrodes, the electrical field in the isolating path is not changed by them. During the switch-on process, the auxiliary switching pin is carried along by the movable main switching pin until it reaches its counter contact and latches with it.
  • the use of an effective mechanical control by stops and pawl for the movement of the auxiliary switching pin has the disadvantage that extremely high surface pressures result for the pawl systems due to the large spring forces required for the acceleration of the auxiliary switching pin, which result in wear of the parts.
  • the invention has for its object to provide a wear-free triggering of the faster movement of the auxiliary switching pin compared to the movable main switching pin which is also effective both during the switch-on process and during the switch-off process in a certain position.
  • a disconnector of the type described above is designed according to the invention in such a way that the movable main switching pin carries an outside spring actuator for the auxiliary switching pin, which is rotatably mounted on this axis, on an axle which is mounted in it and is guided outwards consists of a tension lever and a drive lever, which are connected via an articulated spring, that a guide roller is rotatably mounted on the tension lever, which mechanically controlled the respective tensioning of the spring causes the drive lever to limit its angular movement by means of stops and by the spring in each case until the extended position is held in one of the two end positions corresponding to the on or off position of the movable main switching pin and that this drive lever is articulated via a coupling lever to a supporting axis of the auxiliary switching pin which is guided in slots of the movable main switching pin.
  • a spring drive for the auxiliary switching pin is accommodated within the field electrode of the movable main switching pin, that is to say in the field-free space.
  • This spring drive as it is known for driving the movable switching pin of a disconnector from DE-A-31 36 771, is rotatably mounted on an axis arranged in the movable main switching pin on the side facing away from the isolating section. It is located outside the movable main switch pin. Its two tensioning and drive levers connected via the articulated spring are rotatably mounted on this axis.
  • the tension lever carries the guide roller, which is mechanically controlled.
  • the drive lever is connected via a further articulated coupling lever to the end of the auxiliary switching pin facing away from the separating section.
  • a supporting axis of the auxiliary switching pin, which is guided in slots of the movable main switching pin, is used for this purpose.
  • the mechanical control of the guide roller of the tensioning lever depends, among other things, on the movement of the movable main switching pin. It causes the spring of the spring drive for the auxiliary switching pin to be tensioned at certain positions of the movable main switching pin until the stretched position is reached in which the longitudinal axes of the two levers lie one above the other. Until then, the spring holds the drive lever in one of the two end positions corresponding to the on or off position of the movable main switching pin.
  • auxiliary switching pin does not move relative to the main switching pin during the tensioning of the spring of the spring drive, it has the further advantage that the start of movement is clearly linked to a specific position of the movable main switching pin, which can be freely selected depending on the type of mechanical control.
  • the spring of the spring drive for the auxiliary switching pin can be designed as a compression spring or as a tension spring.
  • the tree requirement for the spring drive is less when using a tension spring.
  • the spring drive for the auxiliary switching pin is expediently designed so that the extended position of the spring occurs in a position of the movable main switching pin within the isolating distance, in which the distance to the mating contact corresponds to the necessary 'dielectric strength. This means that at this point, where the auxiliary switching pin is still located inside the movable main switching pin, neither a switch-on arc nor a switch-off arc can continue to burn.
  • a particularly simple construction of the mechanical control is obtained if it consists of a link guide which is fastened inside the field electrode and contains two rotatably mounted, identical and mirror-image arranged guide levers which each abut against a stop.
  • the guide levers in each direction of movement of the movable main switching pin force the guide roller to be deflected and thus to tension the spring of the spring drive.
  • the isolating switch designed according to the invention for a metal-encapsulated, compressed gas-insulated high-voltage switchgear assembly can also contain two or more isolating sections connected in series, in this case the spring mechanism for the auxiliary switching pin is arranged on each movable main switching pin of each isolating section.
  • FIGS. 2 and 14 each show a longitudinal section through the circuit breaker, wherein the figures 1 and 12 have a larger scale than the other figures.
  • 2 and 14 an end view, partially in section, is shown on the movable main switching pin with the spring drives for the auxiliary switching pin mounted on it.
  • the scale of FIGS. 2 and 14 differs from that of the other figures.
  • 3 shows one of the guide levers of the link guide on a substantially enlarged scale.
  • the same reference numbers are used in all figures for the same parts.
  • the isolating switch 1 is located in a tubular, metallic, grounded encapsulation 2 which is filled with SF s under pressure.
  • both the movable main switching pin 3 and the counter contact 4 are surrounded by shielding field electrodes 5, the distance to the encapsulation 2 of which is not shown to scale .
  • the auxiliary switching pin 7, to which the mating contact 8 in the other field electrode 5 is assigned, is arranged in the center of the tubular movable main switching pin 3.
  • the drive of the movable main switching pin 3 is not shown. This causes a relatively slow movement of the movable main switching pin 3.
  • the spring drive 9, which is mechanically controlled by the link guide 10, serves as the drive for the auxiliary switching pin 7.
  • the auxiliary switching pin 7 is located inside the movable main switching pin 3 and stands back from the end face 11 thereof by the distance 12 indicated by arrows.
  • the link guide 10 is fixedly attached to the inside of the field electrode 5.
  • the spring drive 9 consists of the tension lever 13 and the drive lever 14, between which the spring 15 is located. Both levers 13 and 14 are rotatably mounted on the axis 16, which passes through the main switching pin 3 and is guided to the outside and lie on one side of the main switching pin 3. The other end of the drive lever 14 is articulated to the coupling lever 17, which in turn is connected by means of the supporting axis 18 is connected to the auxiliary switching pin 7. The support shaft 18 is guided in the lateral slots 19 of the main switching pin 3.
  • the coupling lever 17 serves as an operating lever.
  • two stops 20, 21 indicated as circles in FIG. 1, which limit the angular movement of the drive lever 14, are attached to the outside of the movable main switching pin 3. The stop 20 corresponds to the switch-off position of the disconnector 1, the stop 21 to the switch-on position.
  • the spring 15 holds the drive lever 14 in place during the entire switching movement in one of the two end positions determined by the stops 20, 21.
  • the guide roller 22 is rotatably mounted on the tensioning lever 13, by means of which the spring guide drive 9 for the auxiliary switching pin 7 is mechanically controlled with the aid of the link guide 10.
  • the link guide 10 has a longitudinal slot 23 which runs parallel to the auxiliary switching pin 7 and on which the main direction of movement for the guide roller 22 is predetermined.
  • two cutouts 24, 25 are arranged, in each of which a guide lever 26, 27 is arranged so as to be rotatable about a pivot point 28.
  • the lower tip of the guide levers 26, 27 engages in a lower recess in the longitudinal slot 23 and comes to rest there against a stop 29 located below the pivot point 28.
  • a tension spring 30 holds the guide levers 26, 27 in each case at the stop 29.
  • the two identical guide levers 26, 27 are arranged with their pivot point 28 and their stops 29 (see FIG. 3) in mirror image to one another.
  • the disconnector 1 designed according to the invention functions as follows:
  • FIG. 4 shows, like FIG. 1, the switch-off position of the disconnector 1, in which the auxiliary switching pin 7 is located inside the movable main switching pin 3 and protrudes from the end face 11 thereof by the distance 12.
  • the drive lever 14 mounted on the axle 16 is in its one end position, defined by the stop 20, in which it is held by the spring 15.
  • the tension lever 13 of the spring drive 9 lies with the guide roller 22 at the left end of the longitudinal slot 23 of the link guide 10.
  • the two guide levers 26, 27 of the link guide 10 each abut against the stop 29.
  • Fig. 5 shows the beginning of the switching-on movement of the movable main switching pin 3 indicated by the arrow 31.
  • the guide roller 22 on the tension lever 13 is prevented by the left guide lever 26, which rests on the right stop 29, from continuing its movement through the longitudinal slot 23 follow the wall of the upper recess 24.
  • the spring 15 is tensioned.
  • the movable main switching pin 3 is already within the separating distance 6, but since the drive lever 14 has not changed its position, the auxiliary switching pin 7 is still in the idle position within the movable main switching pin 3.
  • the auxiliary switching pin 7 quickly bridges the remaining distance between the movable main switching pin 3 and the opposite field electrode 5 and establishes the electrical connection with the counter contact 8, so that both field electrodes 5 are at the same potential. A possibly occurring flashover arc has no possibility to migrate to the encapsulation 2 because of the high speed of movement of the auxiliary switching pin 7.
  • Fig. 8 shows a continued switch-on movement of the movable main switching pin 3 in which the guide roller 22 reaches the right guide lever 27 and pushes it away from the stop 29, so that the guide roller 22 can continue its movement in the longitudinal slot 23 unhindered.
  • the relative position between the movable main switching pin 3 and the auxiliary switching pin 7 does not change.
  • FIG. 9 shows the switched-on position of the movable main switching pin 3 with the auxiliary switching pin 7.
  • the guide roller 22 on the tensioning lever 13 is located at the right end of the longitudinal slot 23 of the link guide 10.
  • the guide roller 22 of the tensioning lever 13 is located in the upper right recess 25, into which it was deflected by the guide lever 27 resting on its stop 29.
  • the spring 15 is tensioned.
  • the drive lever 14 is in its end position, so that the relative position of the auxiliary switching pin 7 relative to the movable main switching pin 3 does not change.
  • the 11 shows the second extended position 35 of the spring drive 9 during the opening movement.
  • the longitudinal axes of the levers 13 and 14 lie one above the other and the spring 15 is maximally tensioned.
  • the end face of the movable main switching pin 3 is located within the isolating section 6 and is at a distance 33 from the opposite field electrode 5 which corresponds to the voltage strength that is being conveyed.
  • the auxiliary switching pin 7 bridges this distance 33 and is still in contact with the mating contact 8.
  • the distance 36 which the auxiliary switching pin 7 projects into the opposite field electrode 5 serves to accelerate the auxiliary switching pin 7 after exceeding the extended position 35 by a high speed of movement of the auxiliary switching pin 7 within the distance 33.
  • FIG. 12 finally shows a position of the movable switching pin 3 in the separating section 6 in which the extended position 35 is exceeded again. Due to the sudden relaxation of the spring 15, the drive lever 14 has been pressed into its end position against the stop 20. As a result, the auxiliary switching pin 7 was pulled back into the interior of the movable main switching pin 3 via the coupling lever 17. This takes place at high speed, so that any switch-off arc that arises is extinguished so quickly that it cannot migrate to encapsulation 2.
  • the spring 15 is designed as a compression spring.
  • FIG. 13 A longitudinal section through such a disconnector 1, in which the main switching pin 3 is in the off position, is shown in FIG. 13.
  • the tensioning lever 13 extends on both sides of the axis 16 on which it is rotatably mounted. At one end he carries the guide roller 22, which is controlled by the link guide 10, at the other end the spring 15, now designed as a tension spring, is articulated.
  • FIG. 14 shows an end view of a main switching pin 3, in which a spring mechanism drive 9 of the same construction for the auxiliary switching pin 7 is arranged on each side.
  • the tensioning lever 13 is here fork-shaped.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (8)

1. Sectionneur pour des installations de distribution haute tension à blindage métallique et à isolation par un gaz sous pression, du type comportant un intervalle de coupure (6) situé entre des électrodes de champ et pouvant être comblé par une broche principale de contact (3) mobile, de forme tubulaire et dont le contact antagoniste fixe (4) est également de forme tubulaire, du genre dans lequel la broche principale de contact mobile (3) comporte une broche de contact auxiliaire (7) déplaçable par un ressort (15) et dont le contact antagoniste (8) est situé dans le contact antagoniste fixe (4) de la broche principale de contact, la réalisation étant telle qu'à l'aide d'une commande mécanique située à l'intérieur de l'une (5) des électrodes de champ, un mouvement de la broche de contact auxiliaire (7) peut être déclenché par rapport à la broche principale de contact (7), lequel mouvement est plus rapide que celui de la broche principale de contact mobile, caractérisé par le fait que la broche principale de contact mobile (3) porte, sur un axe (16) qui y est monté et qui en déborde, un mécanisme d'entraînement à ressort à détente brusque (9) pour la broche auxiliaire de contact (7), ledit mécanisme étant articulé sur cet axe et étant constitué par un levier d'armement (13) et par un levier de commande (14), tous deux reliés entre eux par un ressort (15) monté à articulation, que sur le levier d'armement (13) est tourillonné un galet de guidage (22) qui, commandé mécaniquement, provoque l'armement du ressort (15), que le déplacement angulaire du levier de commande (14) est limité par des butées (20, 21), alors que par le ressort (15), et jusqu'à la position d'extension de celui-ci, ledit levier est maintenu dans l'une des deux positions d'extrémité qui correspondent à la position de fermeture ou de coupure de la broche principale de contact mobile (3), et que ce levier de commande (14) est, par l'intermédiaire d'un levier d'accouplement (17), relié à articulation avec un axe de support (18) de la broche de contact auxiliaire (7), guidé dans des fentes (19) de la broche principale de contact mobile (3).
2. Sectionneur selon la revendication 1, caractérisé par le fait que de part et d'autre de la broche principale de contact mobile (3) et sur l'axe débordant (16), sont disposés des mécanismes d'entraînement à ressort à détente brusque (9) qui sont d'une seule et même constitution.
3. Sectionneur selon la revendication 1 ou 2, caractérisé par le fait que le ressort (15) du mécanisme d'entraînement à ressort à détente brusque (9) pour la broche auxiliaire de contact (7), est réalisé sous la forme d'un ressort de traction.
4. Sectionneur selon la revendication 1, 2 ou 3, caractérisé par le fait que la position d'extension (32, 35) du ressort (15) du mécanisme d'entraînement à ressort à détente brusque (9) se présente pour une position de la broche principale de contact mobile (3) qui se situe dans l'intervalle de coupure (6), pour laquelle la distance (33) par rapport au contact antagoniste (4), correspond à la rigidité diélectrique nécessaire.
5. Sectionneur selon la revendication 1, 2, 3 ou 4, caractérisé par le fait que la commande mécanique pour le galet de guidage (22) est constitué par un guidage à coulisse (10) qui est fixé à l'intérieur de l'électrode de champ (5), et comporte deux leviers de guidage (26, 27) articulés, identiques et disposés symétriquement, lesdits leviers de guidage portant respectivement contre une butée (29).
6. Sectionneur selon la revendication 5, caractérisé par le fait que les leviers de guidage (26, 27) sont maintenus chacun par un ressort (30) contre la butée (29).
7. Sectionneur selon la revendication 1 ou selon l'une ou plusieurs des revendications 2 à 6, caractérisé par le fait que dans ledit sectionneur (1), deux ou plusieurs intervalles de coupure (6) sont prévues l'un derrière l'autre.
8. Sectionneur selon la revendication 1 ou selon l'une ou plusieurs des revendications 2 à 7, caractérisé par le fait que les butées (20, 21) pour le levier de commande (14) sont reliées à la broche principale de contact mobile (3).
EP84730082A 1983-08-15 1984-08-07 Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé Expired EP0138743B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3329555 1983-08-15
DE19833329555 DE3329555A1 (de) 1983-08-15 1983-08-15 Trennschalter fuer metallgekapselte, druckgasisolierte hochspannungsschaltanlagen

Publications (2)

Publication Number Publication Date
EP0138743A1 EP0138743A1 (fr) 1985-04-24
EP0138743B1 true EP0138743B1 (fr) 1987-03-18

Family

ID=6206668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84730082A Expired EP0138743B1 (fr) 1983-08-15 1984-08-07 Sectionneur pour appareillage de commutation haute tension, logé dans une enceinte métallique à gaz comprimé

Country Status (8)

Country Link
US (1) US4559424A (fr)
EP (1) EP0138743B1 (fr)
JP (1) JPS60100319A (fr)
BR (1) BR8404078A (fr)
CA (1) CA1240356A (fr)
DE (3) DE3329555A1 (fr)
SU (1) SU1316571A3 (fr)
ZA (1) ZA846297B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3832171A1 (de) * 1988-07-01 1990-01-04 Licentia Gmbh Einrichtung zur raschen ein- und ausschaltung von kleinen stroemen fuer trennschalter von v.i.s.
DE3938711A1 (de) * 1989-11-17 1991-05-23 Siemens Ag Trennschalter fuer metallgekapselte, druckgasisolierte hochspannungsschaltanlagen
DE4211156A1 (de) * 1992-03-31 1993-10-07 Siemens Ag Elektrischer Hochspannungs-Leistungsschalter
DE4210545A1 (de) * 1992-03-31 1993-10-07 Asea Brown Boveri Trennschalter für eine metallgekapselte gasisolierte Hochspannungsanlage
FR2763422B1 (fr) * 1997-05-15 1999-07-09 Gec Alsthom T & D Sa Disjoncteur de generateur
DE19834432A1 (de) * 1998-07-30 2000-02-10 Fuss Fritz Gmbh & Co Vorrichtung zum wahlweisen Übertragen von Energie zwischen zwei Übertragungseinheiten
EP2728602B1 (fr) * 2012-11-05 2015-01-21 ABB Technology AG Séparateur de charge haute tension électrique et procédé d'ouverture de celui-ci
JP2017004708A (ja) * 2015-06-09 2017-01-05 株式会社日立製作所 電力開閉装置の制御方法
CN111799125A (zh) * 2020-06-22 2020-10-20 中国南方电网有限责任公司超高压输电公司检修试验中心 延长隔离开关电寿命的方法
CN111755281A (zh) * 2020-06-22 2020-10-09 中国南方电网有限责任公司超高压输电公司检修试验中心 隔离开关

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1033979A (fr) * 1951-03-14 1953-07-17 Chauveau Freres & Cie Dispositif de commande d'un organe en mouvement alternatif, notamment à l'aide d'uninverseur électrique
JPS5576526A (en) * 1978-12-01 1980-06-09 Hitachi Ltd Gas breaker
DE3122442A1 (de) * 1981-06-02 1982-12-23 Siemens AG, 1000 Berlin und 8000 München Trennschalter fuer hochspannungsanlagen
DE3136771A1 (de) * 1981-09-11 1983-03-31 Siemens AG, 1000 Berlin und 8000 München Sprungfederantrieb fuer das bewegliche schaltstueck eines elektrischen erdungs- oder trennschalters

Also Published As

Publication number Publication date
DE3329555A1 (de) 1985-03-07
BR8404078A (pt) 1985-07-16
JPS60100319A (ja) 1985-06-04
EP0138743A1 (fr) 1985-04-24
DE3462730D1 (en) 1987-04-23
DE8323522U1 (fr) 1987-11-05
ZA846297B (en) 1985-03-27
US4559424A (en) 1985-12-17
SU1316571A3 (ru) 1987-06-07
JPH027488B2 (fr) 1990-02-19
CA1240356A (fr) 1988-08-09

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