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EP0734580A1 - High-voltage power switch with a field electrode - Google Patents

High-voltage power switch with a field electrode

Info

Publication number
EP0734580A1
EP0734580A1 EP95902769A EP95902769A EP0734580A1 EP 0734580 A1 EP0734580 A1 EP 0734580A1 EP 95902769 A EP95902769 A EP 95902769A EP 95902769 A EP95902769 A EP 95902769A EP 0734580 A1 EP0734580 A1 EP 0734580A1
Authority
EP
European Patent Office
Prior art keywords
contact piece
field electrode
compression cylinder
state
switched
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
EP95902769A
Other languages
German (de)
French (fr)
Other versions
EP0734580B1 (en
Inventor
Manfred Meinherz
Günther Gilmozzi
Edelhard Kynast
Lutz-Rüdiger JÄNICKE
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 EP0734580A1 publication Critical patent/EP0734580A1/en
Application granted granted Critical
Publication of EP0734580B1 publication Critical patent/EP0734580B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
    • H01H33/245—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring using movable field electrodes
    • 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
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
    • H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
    • H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas

Definitions

  • the invention relates to a high-voltage circuit breaker with a first and a second contact piece, which delimit a separation distance in the switched-off state, a compression piston surrounding the first contact piece, a drivable compression cylinder surrounding the second contact piece in the switched-on state, and with a second contact piece in the switch-off state and surrounding and axially movable first field electrode.
  • Such a high-voltage circuit breaker is known, for example, from DE-OS 42 17 232.
  • a first field electrode is formed by the bottom of the movable compression cylinder.
  • the compression cylinder bridges the separation path, so that the bottom of the compression cylinder, which is designed as a field electrode, coaxially surrounds one of the contact pieces in this position, while the stationary compression piston surrounds the other contact piece.
  • the invention is therefore based on the object of creating a high-voltage circuit breaker of the type mentioned at the outset, in which field electrodes are provided on the one hand for uniformizing the electric field around the region of the isolating section and, on the other hand, the isolating section in the switched-off state has the highest possible dielectric Has strength.
  • the object is achieved in that the first field electrode is separated from the compression cylinder and is designed to be axially movable relative to the latter and that the compression cylinder is at a distance from the second contact piece in the switched-off state.
  • the first field electrode in the region of the second contact piece can be brought into the most favorable dielectric position.
  • the first field electrode can then be displaced axially in order to make room for the compression cylinder.
  • the invention can advantageously be designed in such a way that the first field electrode is spring-loaded axially in the direction of the compression cylinder and that a stop is provided which limits the movement of the first field electrode towards the separating path.
  • the spring load is the drive for the field electrode and thus the field electrode runs during the switch-off process when the compression cylinder is retracted, until it hits the stop that limits the movement of the field electrode and determines the end position of the field electrode .
  • the compression cylinder is pushed forward and pushes the first field electrode back against the spring force until the compression cylinder has reached its end position.
  • a further advantageous embodiment of the invention provides that the end faces of the first field electrode and the compression cylinder at least partially overlap one another in their axial projection.
  • the first field electrode and the compression cylinder can, for example, have the same or similar outer diameter, so that the entire interrupter unit can be accommodated in a space-saving manner with respect to its diameter.
  • the inner diameter of the field electrode can, for example, be chosen so that it is slightly larger than the outer diameter of the second contact piece, so that the second contact piece simultaneously represents a guide for the axial movement of the first field electrode.
  • Another advantageous embodiment of the invention results from the fact that the compression piston is designed as a second field electrode.
  • This compression piston surrounds the first contact piece, so that each of the contact pieces is then surrounded by a field electrode in the switched-off state. This results in a symmetrical design of the electrical field with respect to the isolating section, which increases the dielectric strength of the isolating section.
  • the compression piston can advantageously be drivable in the direction of the second contact piece.
  • the compression piston then moves towards the compression cylinder during the switching-off process, as a result of which a stronger one Compression of the extinguishing gas is reached. Finally, the compression piston is stopped in the dielectrically most favorable position.
  • the first field electrode is connected to a telescopic rod which serves as a spring guide for a compression spring which brings about the axial movement of the first field electrode.
  • FIG. 2 shows the circuit breaker from FIG. 1 during the opening movement
  • FIG 3 shows the circuit breaker from FIGS. 1 and 2 in the switched-off state.
  • the first contact piece 1, the second contact piece 2 as well as a compression piston 3 and a compression cylinder 4 which can be driven by a drive device (not shown) are shown in the figures of the circuit breaker according to the invention. All parts of the circuit breaker shown are rotationally symmetrical with respect to the central axis of the contact pieces 1, 2. However, in order to simplify the illustration, only the upper half of the arrangement was partially drawn.
  • the compression cylinder 4 bridges the separation distance between the contact pieces 1 and 2.
  • a bridging contact piece 5 is firmly connected, which consists of individual contact lamellae, which are arranged on the circumference of a cylinder.
  • the contact lamellae are supported radially outwards via springs 6 against a holding tube 7.
  • Both the bridging contact piece 5 and the holding tube 7, the compression cylinder 4 and the turbulence grille 8 are moved to the right in the course of the disconnection movement in FIG. 1.
  • the bridging contact piece 5 runs from the second contact piece 2 and interrupts the galvanic contact between the first contact piece 1 and the second contact piece 2.
  • a telescopic rod 12 is extended, which is connected to the first field electrode 9 and serves as a spring guide for the spring 10.
  • FIG. 2 shows the compression cylinder 4 in an intermediate position in which the bridging contact piece 5 has already expired from the second contact 2.
  • Bridging contact piece 5, holding tube 7 and springs 6 are not shown in FIGS. 2 and 3 for the sake of clarity.
  • FIG. 3 shows the switch-off state in which the compression cylinder 4 has been largely pulled out of the separation distance between the first contact piece 1 and the second contact piece 2.
  • the volume between the compression piston 3 and the compression cylinder 4 has decreased during the switch-off process to such an extent that compressed extinguishing gas from this volume through the turbulence grating 8 in the space between the first contact piece 1 and the second contact piece 2 has flowed in order to extinguish an arc standing there.
  • the compression cylinder 4 consists of an insulating material, so that it affects the dielectric strength of the separation path only slightly.
  • the first field electrode 9 follows the compression cylinder 4 during the switch-off movement until the stop 13 limits the movement of the field electrode 9 and determines its position in the switch-off state. In this position, the first field electrode 9 uniformizes the electrical field in the region of the second contact piece 2.
  • the arrangement consisting of the contact pieces 1, 2 and the two field electrodes 3, 9 leads overall to a uniformization of the electrical field between the contact pieces and thus to an increase in the dielectric strength of the isolating path.
  • the stop 13 can, for example, also be integrated in the telescopic rod 12.

Landscapes

  • Circuit Breakers (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Electric Clocks (AREA)

Abstract

PCT No. PCT/DE94/01501 Sec. 371 Date Sep. 24, 1996 Sec. 102(e) Date Sep. 24, 1996 PCT Filed Dec. 7, 1994 PCT Pub. No. WO95/17001 PCT Pub. Date Jun. 22, 1995High-voltage power switch including a first and a second contact piece that form an air gap in the switched-off state, a compression piston that surrounds the first contact piece, a drivable compression cylinder that surrounds the second contact piece in the switched-on state, and a first field electrode that surrounds the second contact piece in the switched-off state and is axially movable in relation thereto. The high-voltage power switch also provides that the first field electrode is insulated from the compression cylinder and axially movable in relation thereto and the compression cylinder is displaced by a distance from the second contact piece in the switched-off state.

Description

Beschreibungdescription
Hochspannungs-Leistungsschalter mit einer FeldelektrodeHigh voltage circuit breaker with a field electrode
Die Erfindung bezieht sich auf einen Hochspannungs-Lei¬ stungsschalter mit einem ersten und einem zweiten Kontakt- stück, die im Ausschaltzustand eine Trennstrecke begrenzen, einem das erste Kontaktstück umgebenden Kompressionskolben, einem das zweite Kontaktstück im Einschaltzustand umgebenden antreibbaren Kompressionszylinder und mit einer das zweite Kontaktstück im Ausschaltzus and umgebenden und gegenüber diesem axial beweglichen ersten Feldelektrode.The invention relates to a high-voltage circuit breaker with a first and a second contact piece, which delimit a separation distance in the switched-off state, a compression piston surrounding the first contact piece, a drivable compression cylinder surrounding the second contact piece in the switched-on state, and with a second contact piece in the switch-off state and surrounding and axially movable first field electrode.
Ein derartiger Hochspannungs-Leistungsschalter ist bei- spielsweise aus der DE-OS 42 17 232 bekannt. Bei dem bekann¬ ten Leistungsschalter ist eine erste Feldelektrode durch den Boden des beweglichen Kompressionszylinders gebildet. In der Ausschaltstellung überbrückt der Kompressionszylinder die Trennstrecke, so daß der als Feldelektrode ausgebildete Boden des KompressionsZylinders in dieser Stellung das eine der Kontaktstücke koaxial umgibt, während der feststehende Kom¬ pressionskolben das andere Kontaktstück umgibt.Such a high-voltage circuit breaker is known, for example, from DE-OS 42 17 232. In the known circuit breaker, a first field electrode is formed by the bottom of the movable compression cylinder. In the switched-off position, the compression cylinder bridges the separation path, so that the bottom of the compression cylinder, which is designed as a field electrode, coaxially surrounds one of the contact pieces in this position, while the stationary compression piston surrounds the other contact piece.
Bei dieser Konstellation ist es insbesondere bei sehr hohen Spannungen in bestimmten Fällen ungünstig, daß die Trenn¬ strecke von einem, zwar isolierenden Festkörper überbrückt wird.With this constellation, it is disadvantageous, in particular in the case of very high voltages, in certain cases that the isolating section is bridged by a solid, which is insulating.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Hoch- spannungs-Leistungsschalter der eingangs genannten Art zu schaffen, bei dem einerseits Feldelektroden zur Vergleichmä¬ ßigung des elektrischen Feldes um Bereich der Trennstrecke vorgesehen sind und andererseits die Trennstrecke im Aus¬ schaltzustand eine möglichst hohe dielektrische Festigkeit aufweist. Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die er¬ ste Feldelektrode von dem Kompressionszylinder getrennt und gegenüber diesem axial beweglich ausgebildet ist und daß der Kompressionszylinder im Ausschaltzustand zu dem zweiten Kon- taktstück einen Abstand aufweist.The invention is therefore based on the object of creating a high-voltage circuit breaker of the type mentioned at the outset, in which field electrodes are provided on the one hand for uniformizing the electric field around the region of the isolating section and, on the other hand, the isolating section in the switched-off state has the highest possible dielectric Has strength. The object is achieved in that the first field electrode is separated from the compression cylinder and is designed to be axially movable relative to the latter and that the compression cylinder is at a distance from the second contact piece in the switched-off state.
Durch die Trennung der ersten Feldelektrode vom Kompressi¬ onszylinder kann dieser beim Ausschalten von dem zweiten Kon¬ taktstück abgezogen werden, so daß er die Trennstrecke im Ausschaltzustand nicht überbrückt. Spätestens von dem Zeit¬ punkt an, zu dem der Kompressionszylinder von dem zweiten Kontaktstück abläuft, kann die erste Feldelektrode im Bereich des zweiten Kontaktstücks in die dielektrisch günstigste Po¬ sition gebracht werden.By separating the first field electrode from the compression cylinder, the latter can be removed from the second contact piece when it is switched off, so that it does not bridge the isolating distance in the switched-off state. At the latest from the point in time at which the compression cylinder runs off the second contact piece, the first field electrode in the region of the second contact piece can be brought into the most favorable dielectric position.
Im Einschaltzustand kann die erste Feldelektrode dann axial verschoben werden, um Platz für den Kompressionszylinder zu machen.In the switched-on state, the first field electrode can then be displaced axially in order to make room for the compression cylinder.
Auf diese Weise ergibt sich im Ausschaltzustand eine optimale dielektrische Festigkeit der Trennstrecke, ohne daß die Bewegung des KompressionsZylinders behindert ist.In this way, there is an optimum dielectric strength of the isolating path in the switched-off state without the movement of the compression cylinder being impeded.
Die Erfindung kann vorteilhaft dadurch ausgestaltet werden, daß die erste Feldelektrode axial in Richtung des Kompressi¬ onszylinders federbelastet ist und daß ein Anschlag vorgese¬ hen ist, der die Bewegung der ersten Feldelektrode zur Trenn¬ strecke hin begrenzt.The invention can advantageously be designed in such a way that the first field electrode is spring-loaded axially in the direction of the compression cylinder and that a stop is provided which limits the movement of the first field electrode towards the separating path.
Bei dieser Konstruktion stellt die Federbelastung den Antrieb für die Feldelektrode dar und somit läuft die Feldelektrode während des Ausschaltvorganges, wenn der Kompressionszylinder zurückgezogen wird, diesem nach, bis daß sie an den Anschlag anstößt, der die Bewegung der Feldelektrode begrenzt und die Endposition der Feldelektrode festlegt. Beim Einschalten wird der Kompressionszylinder vorgeschoben und er schiebt die erste Feldelektrode gegen die Federkraft soweit zurück, bis die Endstellung des KompressionsZylinders erreicht ist.In this construction, the spring load is the drive for the field electrode and thus the field electrode runs during the switch-off process when the compression cylinder is retracted, until it hits the stop that limits the movement of the field electrode and determines the end position of the field electrode . When switching on, the compression cylinder is pushed forward and pushes the first field electrode back against the spring force until the compression cylinder has reached its end position.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß die Stirnflächen der ersten Feldelektrode und des Kompressionszylinders einander in ihrer axialen Projektion wenigstens teilweise überdecken.A further advantageous embodiment of the invention provides that the end faces of the first field electrode and the compression cylinder at least partially overlap one another in their axial projection.
Die erste Feldelektrode und der Kompressionszylinder können beispielsweise einen gleichen oder ähnlichen Außendurchmesser aufweisen, so daß die gesamte Unterbrechereinheit in bezug auf ihren Durchmesser platzsparend untergebracht werden kann.The first field electrode and the compression cylinder can, for example, have the same or similar outer diameter, so that the entire interrupter unit can be accommodated in a space-saving manner with respect to its diameter.
Der Innendurchmesser der Feldelektrode kann beispielsweise so gewählt werden, daß er wenig größer ist als der Außendurch¬ messer des zweiten Kontaktstücks, so daß das zweite Kontakt¬ stück gleichzeitig eine Führung für die Axialbewegung der ersten Feldelektrode darstellt.The inner diameter of the field electrode can, for example, be chosen so that it is slightly larger than the outer diameter of the second contact piece, so that the second contact piece simultaneously represents a guide for the axial movement of the first field electrode.
Eine weitere vorteilhafte Ausgestaltung der Erfindung ergibt sich dadurch, daß der Kompressionskolben als zweite Feldelek¬ trode ausgebildet ist.Another advantageous embodiment of the invention results from the fact that the compression piston is designed as a second field electrode.
Dieser Kompressionskolben umgibt das erste Kontaktstück, so daß dann im Ausschaltzustand jedes der Kontaktstücke von ei¬ ner Feldelektrode umgeben ist. Hierdurch ergibt sich eine in bezug auf die Trennstrecke symmetrische Gestaltung des elektrischen Feldes, wodurch die dielektrische Festigkeit der Trennstrecke erhöht wird.This compression piston surrounds the first contact piece, so that each of the contact pieces is then surrounded by a field electrode in the switched-off state. This results in a symmetrical design of the electrical field with respect to the isolating section, which increases the dielectric strength of the isolating section.
In vorteilhafter Weise kann der Kompressionskolben in Rich¬ tung des zweiten Kontaktstückes antreibbar sein.The compression piston can advantageously be drivable in the direction of the second contact piece.
Der Kompressionskolben bewegt sich dann beim Ausschaltvorgang dem Kompressionszylinder entgegen, wodurch eine stärkere Kompression des Löschgases erreicht wird. Schließlich wird der Kompressionskolben in der dielektrisch günstigsten Posi¬ tion angehalten.The compression piston then moves towards the compression cylinder during the switching-off process, as a result of which a stronger one Compression of the extinguishing gas is reached. Finally, the compression piston is stopped in the dielectrically most favorable position.
Es kann außerdem vorteilhaft vorgesehen sein, daß die erste Feldelektrode mit einer Teleskopstange verbunden ist, die als Federführung für eine die Axialbewegung der ersten Feldelek¬ trode bewirkende Druckfeder dient.It can also be advantageously provided that the first field electrode is connected to a telescopic rod which serves as a spring guide for a compression spring which brings about the axial movement of the first field electrode.
Dies ist eine besonders einfache Konstruktion, um eine Fe¬ derbelastung der Feldelektrode in Richtung auf die Trenn¬ strecke hin zu bewirken.This is a particularly simple construction in order to bring about a spring loading of the field electrode in the direction of the separating path.
Im folgenden wird die Erfindung anhand eines Ausführungsbei- spiels in einer Zeichnung gezeigt und anschließend beschrie¬ ben.In the following, the invention is shown on the basis of an exemplary embodiment in a drawing and then described.
Dabei zeigtIt shows
Figur 1 den erfindungsgemäßen Leistungsschalter im Ein- schaltzustand,1 shows the circuit breaker according to the invention in the switched-on state,
Figur 2 den Leistungsschalter aus Figur 1 während der Aus- sehaltbewegung2 shows the circuit breaker from FIG. 1 during the opening movement
Figur 3 den Leistungsschalter aus den Figuren 1 und 2 im Aus¬ schaltzustand.3 shows the circuit breaker from FIGS. 1 and 2 in the switched-off state.
Von dem erfindungsgemäßen Leistungsschalter sind in den Fi¬ guren das erste Kontaktstück 1, das zweite Kontaktstück 2 so¬ wie ein Kompressionskolben 3 und ein durch eine nicht darge¬ stellte Antriebseinrichtung antreibbarer Kompressionszylinder 4 gezeigt. Alle dargestellten Teile des Leistungsschalters sind rotationssymmetrisch in bezug auf die Mittelachse der Kontaktstücke 1, 2. Es wurde jedoch zur Vereinfachung der Darstellung teilweise nur die obere Hälfte der Anordnung gezeichnet.The first contact piece 1, the second contact piece 2 as well as a compression piston 3 and a compression cylinder 4 which can be driven by a drive device (not shown) are shown in the figures of the circuit breaker according to the invention. All parts of the circuit breaker shown are rotationally symmetrical with respect to the central axis of the contact pieces 1, 2. However, in order to simplify the illustration, only the upper half of the arrangement was partially drawn.
Im Einschaltzustand überbrückt der Kompressionszylinder 4 die Trennstrecke zwischen den Kontaktstücken 1 und 2. Mit dem Kompressionszylinder 4 ist ein Überbrückungskontaktstück 5 fest verbunden, das aus einzelnen Kontaktlamellen besteht, die am Umfang eines Zylinders angeordnet sind. Die Kontaktla¬ mellen stützen sich radial nach außen über Federn 6 gegen ein Halterohr 7 ab.In the switched-on state, the compression cylinder 4 bridges the separation distance between the contact pieces 1 and 2. With the Compression cylinder 4, a bridging contact piece 5 is firmly connected, which consists of individual contact lamellae, which are arranged on the circumference of a cylinder. The contact lamellae are supported radially outwards via springs 6 against a holding tube 7.
Sowohl das Überbrückungskontaktstück 5 als auch das Halterohr 7, der Kompressionszylinder 4 und das Turbulenzgitter 8 werden im Zuge der Ausschaltbewegung in der Figur 1 nach rechts bewegt. Dabei läuft das Überbrückungskontaktstück 5 von dem zweiten Kontaktstück 2 ab, und unterbricht den gal¬ vanischen Kontakt zwischen dem ersten Kontaktstück 1 und dem zweiten Kontaktstück 2.Both the bridging contact piece 5 and the holding tube 7, the compression cylinder 4 and the turbulence grille 8 are moved to the right in the course of the disconnection movement in FIG. 1. The bridging contact piece 5 runs from the second contact piece 2 and interrupts the galvanic contact between the first contact piece 1 and the second contact piece 2.
Bei der Bewegung des KompressionsZylinders 4 nach rechts wird die erste Feldelektrode 9 durch die Kraft der Feder 10 je¬ weils gegen die Stirnfläche 11 des Kompressionszylinders 4 gedrückt und läuft dem Kompressionszylinder 4 ein Stück weit nach.When the compression cylinder 4 moves to the right, the first field electrode 9 is pressed against the end face 11 of the compression cylinder 4 by the force of the spring 10 and runs a little way after the compression cylinder 4.
Im Zuge dieser Bewegung verlängert sich eine Teleskopstange 12, die mit der ersten Feldelektrode 9 verbunden ist und als Federführung für die Feder 10 dient.In the course of this movement, a telescopic rod 12 is extended, which is connected to the first field electrode 9 and serves as a spring guide for the spring 10.
Figur 2 zeigt den Kompressionszylinder 4 in einer Zwischen¬ stellung, in der das Überbrückungskontaktstück 5 bereits von dem zweiten Kontakt 2 abgelaufen ist. Überbrückungskon¬ taktstück 5, Halterohr 7 und Federn 6 sind in den Figuren 2 und 3 der Übersichtlichkeit halber nicht dargestellt.FIG. 2 shows the compression cylinder 4 in an intermediate position in which the bridging contact piece 5 has already expired from the second contact 2. Bridging contact piece 5, holding tube 7 and springs 6 are not shown in FIGS. 2 and 3 for the sake of clarity.
In der Figur 3 ist der Ausschaltzustand dargestellt, in dem der Kompressionszylinder 4 weitgehend aus der Trennstrecke zwischen dem ersten Kontaktstück 1 und dem zweiten Kontakt¬ stück 2 herausgezogen ist. Das Volumen zwischen dem Kompres- sionskolben 3 und dem Kompressionszylinder 4 hat sich während des Ausschaltvorganges soweit verringert, daß komprimiertes Löschgas aus diesem Volumen durch das Turbulenzgitter 8 in den Raum zwischen dem ersten Kontaktstück 1 und dem zweiten Kontaktstück 2 eingeströmt ist, um einen dort stehenden Lichtbogen zu löschen. Der Kompressionszylinder 4 besteht aus einem Isolierstoff, so daß er die dielektrische Festigkeit der Trennstrecke nur wenig beeinflußt. Der Kompressionskolben 3, der aus einem leitenden Werkstoff besteht, wirkt als Feldelektrode und vergleichmäßigt das Feld um das erste Kontaktstück 1 herum.FIG. 3 shows the switch-off state in which the compression cylinder 4 has been largely pulled out of the separation distance between the first contact piece 1 and the second contact piece 2. The volume between the compression piston 3 and the compression cylinder 4 has decreased during the switch-off process to such an extent that compressed extinguishing gas from this volume through the turbulence grating 8 in the space between the first contact piece 1 and the second contact piece 2 has flowed in order to extinguish an arc standing there. The compression cylinder 4 consists of an insulating material, so that it affects the dielectric strength of the separation path only slightly. The compression piston 3, which consists of a conductive material, acts as a field electrode and evens out the field around the first contact piece 1.
Die erste Feldelektrode 9 läuft während der Ausschaltbewegung dem Kompressionszylinder 4 nach, bis der Anschlag 13 die Bewegung der Feldelektrode 9 begrenzt und deren Position im Ausschaltzustand bestimmt. Die erste Feldelektrode 9 vergleichmäßigt in dieser Stellung das elektrische Feld im Bereich des zweiten Kontaktstücks 2.The first field electrode 9 follows the compression cylinder 4 during the switch-off movement until the stop 13 limits the movement of the field electrode 9 and determines its position in the switch-off state. In this position, the first field electrode 9 uniformizes the electrical field in the region of the second contact piece 2.
Die aus den Kontaktstücken 1, 2 und den beiden Feldelektroden 3, 9 bestehende Anordnung führt insgesamt zu einer Ver¬ gleichmäßigung des elektrischen Feldes zwischen den Kontakt- stücken und damit zu einer Erhöhung der dielektrischen Fe¬ stigkeit der Trennstrecke.The arrangement consisting of the contact pieces 1, 2 and the two field electrodes 3, 9 leads overall to a uniformization of the electrical field between the contact pieces and thus to an increase in the dielectric strength of the isolating path.
Der Anschlag 13 kann beispielsweise auch in die Teles¬ kopstange 12 integriert sein. The stop 13 can, for example, also be integrated in the telescopic rod 12.

Claims

Patentansprüche Claims
1. Hochspannungs-Leistungsschalter mit einem ersten und einem zweiten Kontaktstück (1, 2), die im Ausschaltzustand eine Trennstrecke begrenzen, einem das erste Kontaktstück (1) um¬ gebenden Kompressionskolben (3) und einem das zweite Kon¬ taktstück (2) im Einschaltzustand umgebenden antreibbaren Kompressionszylinder (4) und mit einer das zweite Kontakt¬ stück (2) im Ausschaltzustand umgebenden und gegenüber diesem axial beweglichen ersten Feldelektrode (9), d a d u r c h g e k e n n z e i c h n e t , daß die erste Feldelektrode (9) von dem Kompressionszylinder (4) getrennt und gegenüber diesem axial beweglich ausgebildet ist und daß der Kompressionszylinder (4) im Ausschaltzustand zu dem zweiten Kontaktstück (2) einen Abstand aufweist.1. High-voltage circuit breaker with a first and a second contact piece (1, 2), which delimit a separating distance in the switched-off state, a compression piston (3) surrounding the first contact piece (1) and a second contact piece (2) in the Switchable state surrounding drivable compression cylinder (4) and with a first contact electrode (9) surrounding the second contact piece (2) in the switched-off state and axially movable with respect to it, characterized in that the first field electrode (9) is separated from the compression cylinder (4) and opposite this is designed to be axially movable and that the compression cylinder (4) is at a distance from the second contact piece (2) in the switched-off state.
2. Hochspannungs-Leistungsschalter nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die erste Feldelektrode (9) axial in Richtung des Kom- pressionszylinders (4) federbelastet ist und daß ein Anschlag (13) vorgesehen ist, der die Bewegung der ersten Feldelektrode (9) zur Trennstrecke hin begrenzt.2. High-voltage circuit breaker according to claim 1, characterized in that the first field electrode (9) is axially spring-loaded in the direction of the compression cylinder (4) and in that a stop (13) is provided which moves the first field electrode (9) to Separation distance limited.
3. Hochspannungs-Leistungsschalter nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , daß die Stirnflächen (11) der ersten Feldelektrode (9) und des KompressionsZylinders (4) einander in ihrer axialen Pro¬ jektion wenigstens teilweise überdecken.3. High-voltage circuit breaker according to claim 1 or 2, so that the end faces (11) of the first field electrode (9) and the compression cylinder (4) at least partially overlap one another in their axial projection.
4. Hochspannungs-Leistungsschalter nach Anspruch 1 oder einem der folgenden, d a d u r c h g e k e n n z e i c h n e t , daß der Kompressionskolben (3) als zweite Feldelektrode aus¬ gebildet ist.4. High-voltage circuit breaker according to claim 1 or one of the following, that the compression piston (3) is formed as a second field electrode.
5. Hochspannungs-Leistungsschalter nach Anspruch 1 oder einem der folgenden, d a d u r c h g e k e n n z e i c h n e t , daß der Kompressionskolben (3) in Richtung des zweiten Kon¬ taktstückes (2) antreibbar ist.5. High-voltage circuit breaker according to claim 1 or one of the following, characterized in that the compression piston (3) can be driven in the direction of the second contact piece (2).
6. Hochspannungs-Leistungsschalter nach Anspruch 1 oder einem der folgenden, d a d u r c h g e k e n n z e i c h n e t , daß die erste Feldelektrode (9) mit einer Teleskopstange (12) verbunden ist, die als Federführung für eine eine Axialbewe- gung der ersten Feldelektrode (9) bewirkende Druckfeder (10) dient. 6. High-voltage circuit breaker according to claim 1 or one of the following, characterized in that the first field electrode (9) is connected to a telescopic rod (12), which acts as a spring guide for an axial movement of the first field electrode (9) causing compression spring (10 ) serves.
EP95902769A 1993-12-17 1994-12-07 High-voltage power switch with a field electrode Expired - Lifetime EP0734580B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4343786A DE4343786C1 (en) 1993-12-17 1993-12-17 High-voltage (high-tension) power circuit breaker (power switch) having a field electrode
DE4343786 1993-12-17
PCT/DE1994/001501 WO1995017001A1 (en) 1993-12-17 1994-12-07 High-voltage power switch with a field electrode

Publications (2)

Publication Number Publication Date
EP0734580A1 true EP0734580A1 (en) 1996-10-02
EP0734580B1 EP0734580B1 (en) 1998-07-15

Family

ID=6505733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902769A Expired - Lifetime EP0734580B1 (en) 1993-12-17 1994-12-07 High-voltage power switch with a field electrode

Country Status (6)

Country Link
US (1) US5728988A (en)
EP (1) EP0734580B1 (en)
AT (1) ATE168499T1 (en)
CA (1) CA2179201A1 (en)
DE (2) DE4343786C1 (en)
WO (1) WO1995017001A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29509015U1 (en) * 1995-05-24 1995-08-03 Siemens AG, 80333 München High-voltage circuit breakers with a fixed heating volume
DE19641550A1 (en) * 1996-10-09 1998-04-16 Asea Brown Boveri Circuit breaker
DE19644624C1 (en) * 1996-10-18 1998-03-26 Siemens Ag High-voltage gas pressure switch with disparate field electrodes
US6762385B1 (en) * 2003-01-14 2004-07-13 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip
US7078642B2 (en) 2003-01-14 2006-07-18 Cleaveland/Price Inc. Arc extinguishing device with a high speed whip

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Publication number Priority date Publication date Assignee Title
DE2122183A1 (en) * 1971-04-30 1972-11-16 Siemens AG, 1000 Berlin u. 8000 München Blow piston switch
DE2140284A1 (en) * 1971-08-06 1973-02-15 Siemens Ag ELECTRIC PRESSURE GAS SWITCH
DE2704389C3 (en) * 1977-01-31 1980-06-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Disconnector for metal-enclosed high-voltage switchgear
DE3122442A1 (en) * 1981-06-02 1982-12-23 Siemens AG, 1000 Berlin und 8000 München DISCONNECTOR FOR HIGH VOLTAGE SYSTEMS
DE4010007A1 (en) * 1990-03-26 1991-10-02 Siemens Ag Pressure gas circuit breaker with driven compression cylinder
DE4211158A1 (en) * 1992-03-31 1993-10-07 Siemens Ag High voltage circuit breakers
DE4217232A1 (en) * 1992-05-20 1993-11-25 Siemens Ag Electrical high-voltage power switch - has compression system for quenching gas with cylinder floors made of material with good electrical conductivity

Non-Patent Citations (1)

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Title
See references of WO9517001A1 *

Also Published As

Publication number Publication date
EP0734580B1 (en) 1998-07-15
ATE168499T1 (en) 1998-08-15
WO1995017001A1 (en) 1995-06-22
US5728988A (en) 1998-03-17
CA2179201A1 (en) 1995-06-22
DE4343786C1 (en) 1995-02-23
DE59406463D1 (en) 1998-08-20

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