EP0085205B1 - High voltage circuit breaker and its use - Google Patents

High voltage circuit breaker and its use Download PDF

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Publication number
EP0085205B1
EP0085205B1 EP82201664A EP82201664A EP0085205B1 EP 0085205 B1 EP0085205 B1 EP 0085205B1 EP 82201664 A EP82201664 A EP 82201664A EP 82201664 A EP82201664 A EP 82201664A EP 0085205 B1 EP0085205 B1 EP 0085205B1
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EP
European Patent Office
Prior art keywords
voltage switch
switch
separating
switched
latching
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
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EP82201664A
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German (de)
French (fr)
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EP0085205A1 (en
Inventor
Georg Köppl
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BBC Brown Boveri AG Switzerland
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BBC Brown Boveri AG Switzerland
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Priority to AT82201664T priority Critical patent/ATE18318T1/en
Publication of EP0085205A1 publication Critical patent/EP0085205A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00Switching devices actuated by an explosion produced within the device and initiated by an electric current

Definitions

  • the invention relates to a high-voltage switch with at least one movable contact, on which a bias acts in the switch-off direction in the switch-on position, and to a device for locking the movable contact in the switch-on position, the lock being detachable by detonating an explosive charge, and using the same .
  • a high-voltage switch of the type mentioned at the outset is known from FIG. 6 of CH-A-321 671.
  • a movable contact is biased by a spring in the opening direction.
  • Detonation of an explosive device releases a lock that holds the switch in the switched-on position, and the movable contact is moved in the switch-off direction by the action of the relaxing spring.
  • the pressure occurring during the detonation also causes the switching section to be blown via a piston-cylinder arrangement.
  • the switch is switched off, it must be de-energized, then manually switched to the on position and provided with a new lock. Finally, a new blast trigger is installed and the mains voltage is then switched on again.
  • a high-voltage switch similar to the type mentioned at the outset is known from FIG. 3 of FR-A-1 535 272.
  • the movable contacts are biased in the switch-on direction by pressurized gas piston-cylinder arrangements. Detonation of an explosive trigger releases a lock that holds the switch in the switched-off position, and the movable contacts are moved in the switch-on direction by the action of the compressed gas acting on the piston-cylinder arrangements.
  • This switch can be switched off after each switch-on. Then it is switched off, the compressed gas is removed from the entire switch and only then can a new interlock with an explosive device be installed. After refilling with compressed gas and switching on the mains voltage, the known switch is ready for operation again.
  • the invention seeks to remedy this.
  • the invention as characterized in claims 1, solves the problem of creating a high-voltage switch of the type mentioned, which can perform at least one further switch-off after a switch-off and the following switch-on without manual intervention on the switch being necessary in between, and to indicate the use of such a switch.
  • FIG. 1 shows the overall arrangement of the half-cycle high-voltage switch 1 according to the invention.
  • a partial section shows a fixed contact 2 and a movable contact 3, which are located in an arcing chamber 1 ', with a further section showing an insulation encapsulation 4 and a Insulating rod 5 are shown.
  • FIG. 1 shows further functional parts of the half-period high-voltage switch schematically.
  • a high-pressure container 6 is connected via a refill valve 7 to a device 8 with a switch-on piston.
  • a connecting part 9 leads to a rotating device 10, the continuation of which is a device 11 with an opening piston.
  • the fixed contact 2 is provided with a contact body 12.
  • the movable contact 3 has a contact body 13 on.
  • the fixed contact 2 contains a sliding contact 14, the movable contact 3 a sliding contact 15. Between the contact bodies 12 and 18, a seal 16 is attached.
  • the contact body 13 is provided with a shield 17.
  • the contact body 12 is pressed into its contact position with a cylindrical compression spring 19, with a further cylindrical compression spring 20 being associated with the contact body 18.
  • the fixed contact 2 is connected by a current guide 21 to a connection contact, not shown.
  • the sliding contact 15 has a current guide 22 in which an annular seal 24 is mounted.
  • the movable contact 3 also contains a connecting star 23 which is connected to the insulating rod 5.
  • the connection star 23 is held by means of two rings 25.
  • FIG. 3 the device 11 and partially the rotating device 10 of FIG. 1 is explained in more detail.
  • a cylinder housing 26 an opening piston 27 is slidably mounted.
  • This switch-off piston 27 is connected to a piston rod 28 and provided with a sealing ring 29 which is mounted in a groove 30.
  • the piston rod 28 is guided with a star-shaped holder 31.
  • An engagement disk 32 of the rotating device 10 is shown in the lower part of FIG. 3.
  • the engagement disc 32 is provided with a plunger 33 which contacts the shut-off piston 27.
  • the plunger 33 is guided in two guide rings 34.
  • the engagement disk 32 is provided with two bores 35.
  • FIG. 3 only a separating screw 36 is drawn for clarity.
  • the position of the other separating screws 36 can be seen from FIG. 4.
  • a plurality of tilting segments 37 are rotatably fastened in the engagement disk 32 by means of bearing bolts 39.
  • the separating screws 36 are provided with spacer sleeves 38.
  • a fender 40 is fastened under the separating screws 36 and has the task of preventing the lower parts of the separating screws 36 from falling out.
  • the reference number 41 denotes the nut of the separating screw 36, this nut 41 being supported with a plate spring 42.
  • the rotating device 10 is provided with a cylinder housing 43, both the cylinder housing 43 and the cylinder housing 26 being drawn in one piece with corresponding slide-shaped plates because of the simplicity. It goes without saying that they consist of several parts for assembly reasons.
  • the engagement disk 32 has hook-shaped parts 44, in which recesses 45 are formed for the support relative to the separating screws 36.
  • FIG. 5 shows in section an example of the configuration of the connecting part 9 from FIG. 1, the engagement disk 32 from FIGS. 3 and 4 also being shown in simplified form in this FIG. 5.
  • a bolt 48 is mounted in a sleeve 46 of the rotating device 10.
  • the sleeve 46 is held by two support arms 46 ', which are also clearly visible in the section VI-VI shown in FIG. 6.
  • the sleeve 46 is provided with a slot-like recess 47 which forms a loop.
  • a roller 49 which is rotatably mounted in the bolt 48, engages in this link-like recess 47.
  • the bolt 48 carries a plate 50 which is provided with two pins 51. These pins 51 serve to engage in the bores 35 of the engagement disk 32.
  • FIG. 5 shows in section an example of the configuration of the connecting part 9 from FIG. 1, the engagement disk 32 from FIGS. 3 and 4 also being shown in simplified form in this FIG. 5.
  • a bolt 48 is mounted in a sleeve 46 of the
  • a switch-on piston 52 is shown, which is connected to a switch-in plunger 53.
  • This switch-in plunger 53 has an annular groove 54, in which two fixing bolts 55, which are only symbolically drawn, engage, which are pressed into the bolt 48 and allow the rotary movement of the bolt 48 with respect to the switch-in plunger 53.
  • the device 8 with the switch-on piston 52 is provided with a cylinder housing 56 in which a bore 57 is made.
  • the switch-on piston 52 is supported with a compression spring 58 in relation to the cylinder housing 56.
  • FIG. 6 shows the section VI-VI from FIG. 5. In this FIG. One can see the position of the roller 49 in the slot-like recess 47 of the sleeve of the rotating device 10.
  • FIG. 7 and 8 show two examples of the use of the high-voltage switch 1 according to the invention.
  • the reference number 59 denotes line switches, with 60 transformers, with 61 busbars and with 62 lines.
  • a half-period high-voltage switch 1 is switched on in series with a supply switch 59, this series connection feeding the responsible busbar 61 via one transformer 60 each.
  • the example circuit according to FIG. 8 shows a variant in which the half-cycle high-voltage switch 1 according to the invention is connected in series with one circuit breaker 59 each directly into the lines 62 in the switchgear.
  • the most important component for the fast operation of the half-period high-voltage switch 1 according to the invention is determined by the separating screws 36 in this example in cooperation with the engagement disk 32.
  • the separating screws are known per se. They are screws that receive a triggering pulse via an ignition control (not shown), whereby they are blasted off in the target zone and riveted into the brackets.
  • the mode of operation is as follows: If a triggering system detects a fault current that will exceed a predetermined threshold value, there is a triggering pulse on the separating screw 36 holding the prestressed piston rod 28.
  • the ignition control transmits the trigger pulse on the separating screw or the tennis screws 36 which are currently in engagement with the engagement disk 32.
  • the separating screw 36 is blown off and releases the mechanical connection between the cylinder housing 43 of the rotating device 10 and the engagement disk 32.
  • gas mixture SFJ N 2 which has penetrated from the high-pressure container 6 into the quenching chamber 1' through the switch column is.
  • the switch-off valve 27 accelerates the movable contacts 3 under the effect of the constantly present gas mixture pressure.
  • the seal 16 in the arcing chamber 1 'opens and releases the pressure on the contacts 12, 13. After the contact has been separated, the arc is blown sharply and extinguished in the zero passage.
  • the circuit breaker 59 which opens in the following takes over the insulation.
  • the de-energized switching on of the half-period high-voltage switch 1 immediately follows the switching off.
  • the refill valve 7 of the high-pressure container 6 is opened and the SF B / N 2 mixture flowing into the switch column flows under the switch-on piston 52 and moves it in the switch-on direction.
  • the closing piston 52 takes the bolt 48 of the rotating device 10 with it.
  • the engagement disk 32 fixed with the pin 51 is also taken along and locked in an intact separating screw 36 at the end of the movement.

Abstract

To provide a high-voltage switch which can switch off in a very short time, namely in a half-period, rapid severing of the isolating screws (36) is utilized, and the high-voltage switch is designed so that the switch-off and switch-on device contains at least one isolating screw (36) by means of which a prestressed rod (28) connected to the movable contact of the high-voltage switch can be released. The half-period high-voltage switch according to the invention is used appropriately in switching systems where the half-period high-voltage switch is connected in series with at least one power circuit-breaker. The advantage is to be seen especially in the use of the high-voltage switch in switching systems where it permits a limited short-circuit cut-out capacity.

Description

Die Erfindung bezieht sich auf einen Hochspannungsschalter mit wenigstens einem beweglichen Kontakt, auf welchen in der Einschaltstellung eine Vorspannung in Ausschaltrichtung wirkt sowie mit einer Vorrichtung zur Verriegelung des beweglichen Kontaktes in der Einschaltstellung, wobei die Verriegelung durch Detonation einer Sprengladung lösbar ist, und eine Verwendung desselben.The invention relates to a high-voltage switch with at least one movable contact, on which a bias acts in the switch-off direction in the switch-on position, and to a device for locking the movable contact in the switch-on position, the lock being detachable by detonating an explosive charge, and using the same .

Ein Hochspannungsschalter der eingangs genannten Art ist aus Fig. 6 der CH-A-321 671 bekannt. Beim bekannten Schalter wird ein beweglicher Kontakt durch eine Feder in Auschaltrichtung vorgespannt. Durch Detonation eines Sprengauslösers wird eine den Schalter in eingeschalteter Stellung haltende Verriegelung gelöst, und der bewegliche Kontakt wird durch die Wirkung der sich entspannenden Feder in Ausschaltrichtung bewegt. Der bei der Detonation auftretende Druck bewirkt ferner über eine Kolben-Zylinder-Anordnung die Beblasung der Schaltstrecke. Nach jeder Ausschaltung des Schalters muss dieser spannungsfrei geschaltet, danach manuell in Einschaltstellung gebracht und mit einer neuen Verriegelung versehen werden. Zuletzt wird dann ein neuer Sprengauslöser eingebaut und anschliessend die Netzspannung wieder zugeschaltet.A high-voltage switch of the type mentioned at the outset is known from FIG. 6 of CH-A-321 671. In the known switch, a movable contact is biased by a spring in the opening direction. Detonation of an explosive device releases a lock that holds the switch in the switched-on position, and the movable contact is moved in the switch-off direction by the action of the relaxing spring. The pressure occurring during the detonation also causes the switching section to be blown via a piston-cylinder arrangement. Each time the switch is switched off, it must be de-energized, then manually switched to the on position and provided with a new lock. Finally, a new blast trigger is installed and the mains voltage is then switched on again.

Das bei einem derartigen Schalter stets erforderliche manuelle Nachladen, wirkt sich störend auf den Netzbetrieb aus, da jede Abschaltung eine längere Stillegung des abgeschalteten Netzteiles zur Folge hat.The manual recharging that is always required with such a switch has a disruptive effect on network operation, since each shutdown results in the shutdown of the switched-off power supply unit for a longer period.

Ein Hochspannungsschalter ähnlich der eingangs genannten Art ist aus der Fig. 3 der FR-A-1 535 272 bekannt. Beim bekannten Schalter werden die beweglichen Kontakte durch mit Druckgas beaufschlagte Kolben-Zylinder-Anordnungen in Einschaltrichtung vorgespannt. Durch Detonation eines Sprengauslösers wird eine den Schalter in ausgeschalteter Stellung haltende Verriegelung gelöst und die beweglichen Kontakte werden durch die Wirkung des die Kolben-Zylinder-Anordnungen beaufschlagenden Druckgases in Einschaltrichtung bewegt. Nach jeder Einschaltung kann dieser Schalter wieder ausgeschaltet werden. Danach wird er spannungsfrei geschaltet, das Druckgas wird aus dem gesamten Schalter entfernt und erst dann kann eine neue Verriegelung mit Sprengauslöser eingebaut werden. Nach dem erneuten Füllen mit Druckgas und dem Zuschalten der Netzspannung ist der bekannte Schalter wieder betriebsbereit.A high-voltage switch similar to the type mentioned at the outset is known from FIG. 3 of FR-A-1 535 272. In the known switch, the movable contacts are biased in the switch-on direction by pressurized gas piston-cylinder arrangements. Detonation of an explosive trigger releases a lock that holds the switch in the switched-off position, and the movable contacts are moved in the switch-on direction by the action of the compressed gas acting on the piston-cylinder arrangements. This switch can be switched off after each switch-on. Then it is switched off, the compressed gas is removed from the entire switch and only then can a new interlock with an explosive device be installed. After refilling with compressed gas and switching on the mains voltage, the known switch is ready for operation again.

Beim Einsatz von einem derartigen Schalter behindern die mit dem manuellen Nachladen verbundenen Arbeiten den Netzbetrieb.When such a switch is used, the work associated with manual recharging hinders network operation.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie im Anspruchen 1 gekennzeichnet ist, löst die Aufgabe, einen Hochspannungsschalter der eingangs genannten Art zu schaffen, welcher nach einer Ausschaltung und dem folgenden Einschalten mindestens eine weitere Ausschaltung durchführen kann, ohne dass dazwischen manuelle Eingriffe am Schalter nötig sind, und eine Verwendung eines solchen Schalters anzugeben.The invention seeks to remedy this. The invention, as characterized in claims 1, solves the problem of creating a high-voltage switch of the type mentioned, which can perform at least one further switch-off after a switch-off and the following switch-on without manual intervention on the switch being necessary in between, and to indicate the use of such a switch.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass mit einem derartigen Hochspannungsschalter ausgestattete Netze bezüglich Stromüberlastung weniger aufwendig dimensioniert werden müssen. Ein in Reihe zu einem derartigen Hochspannungsschalter geschalteter Leitungsschalter braucht demnach nur für kleine Abschaltleitungen ausgelegt zu sein, da er lediglich die normalen Betriebsschaltungen auszufüren hat.The advantages achieved by the invention are essentially to be seen in the fact that networks equipped with such a high-voltage switch have to be dimensioned less expensively with regard to current overload. A line switch connected in series with such a high-voltage switch therefore only needs to be designed for small switch-off lines, since it only has to carry out the normal operating circuits.

Besonders vorteilhaft wirkt sich aus, dass der Hochspannungsschalter nach erfolgter Ausschaltung stromlos wieder einschaltet und danach wieder voll ausschaltfähig ist, ohne dass ein manuelles Nachladen notwendig ist.It has a particularly advantageous effect that the high-voltage switch switches on again when it is switched off and can then be switched off again completely without manual recharging being necessary.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert.The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment.

Es zeigt:

  • Fig. 1 eine beispielsweise erfindungsgemässe Ausgestaltung des Halbperioden-Hochspannungsschalters,
  • Fig. 2 einen teilweisen Schnitt durch die Löschkammer des Halbperioden-Hochspannungsschalters,
  • Fig. 3 einen Schnitt durch eine in Fig. 1 nur vereinfacht dargestellte Drehvorrichtung,
  • Fig. 4 den Schnitt IV-IV aus Fig. 3,
  • Fig. 5 einen Schnitt durch die in Fig. 1 nur symbolisch dargestellte Drehvorrichtung mit einem Vorbindungsteil,
  • Fig. 6 den Schnitt VI-VI aus Fig. 5,
  • Fig. 7 eine beispielsweise Verwendung des HalbperiodenHochspannungsschalters in einer Schaltanlage und
  • Fig. 8 eine andere Verwendung des erfindungsgemässen Halbperioden-Hochspannungsschalters.
It shows:
  • 1 shows, for example, an embodiment of the half-period high-voltage switch according to the invention,
  • 2 shows a partial section through the arcing chamber of the half-period high-voltage switch,
  • 3 shows a section through a rotating device shown only in simplified form in FIG. 1,
  • 4 shows the section IV-IV from FIG. 3,
  • 5 shows a section through the rotating device shown only symbolically in FIG. 1 with a pre-binding part,
  • 6 shows the section VI-VI from FIG. 5,
  • 7 shows an example of the use of the half-period high-voltage switch in a switchgear and
  • 8 shows another use of the half-period high-voltage switch according to the invention.

Fig. 1 zeigt die Gesamtanordnung des erfindungsgemässen Halbperioden-Hochspannungsschalters 1. In dieser Zeichnung ist ein teilweisem Schnitt ein fester Kontakt 2 und ein beweglicher Kontakt 3 gezeigt, die sich in einer Löschkammer 1' befinden, wobei in einem weiteren Schnitt eine Isolationskapselung 4 und eine Isolierstange 5 gezeigt sind. Im unteren Teil der Fig. 1 sind schematisch weitere Funktionsteile des Halbperioden-Hochspannungsschalters gezeigt. Ein hochdruckbehälter 6 ist über ein Nachfüllventil 7 mit einer Vorrichtung 8 mit einem Einschaltkolben verbunden. Ein Verbindungsteil 9 führt zu einer Drehvorrichtung 10, deren Fortsetzung eine Vorrichtung 11 mit einem Ausschaltkolben ist. Die Detailausführungen der Einzelteile werden anhand folgender Zeichnungen näher erläutert.1 shows the overall arrangement of the half-cycle high-voltage switch 1 according to the invention. In this drawing, a partial section shows a fixed contact 2 and a movable contact 3, which are located in an arcing chamber 1 ', with a further section showing an insulation encapsulation 4 and a Insulating rod 5 are shown. In the lower part of FIG. 1, further functional parts of the half-period high-voltage switch are shown schematically. A high-pressure container 6 is connected via a refill valve 7 to a device 8 with a switch-on piston. A connecting part 9 leads to a rotating device 10, the continuation of which is a device 11 with an opening piston. The detailed designs of the individual parts are explained in more detail using the following drawings.

Die Bezugsziffern bezeichnen in allen Zeichnungen dieselben Teile.The reference numerals designate the same parts in all drawings.

In Fig. 2 ist ein Schnitt durch einen Teil einer Löschkammer 1' dargestellt. Der feste Kontakt 2 ist mit einem Kontaktkörper 12 versehen. Der bewegliche Kontakt 3 weist einen Kontaktkörper 13 auf. Der feste Kontakte 2 enthält einen Gleitkontakt 14, der bewegliche Kontakt 3 einen Gleitkontakt 15. Zwischen den Kontaktkörpern 12 und 18 ist eine Dichtung 16 befestigt. Der Kontaktkörper 13 ist mit einer Abschirmung 17 versehen. - Der Kontaktkörper 12 wird in seine Kontaktlage mit einer zylindrischen Druckfeder 19 gedrückt, wobei eine weitere zylindrische Druckfeder 20 dem Kontaktkörper 18 zugeordnet ist. Der feste Kontakt 2 wird durch eine Stromführung 21 mit einem nicht dargestellten Anschlusskontakt verbunden. Der Gleitkontakt 15 weist eine Stromführung 22 auf, in der eine ringförmige Dichtung 24 gelagert ist. Der bewegliche Kontakt 3 enthält weiter einen Verbindungsstern 23, der mit der Isolierstange 5 verbunden ist. Die Halterung des Verbindungssternes 23 wird mittels zweier Ringe 25 durchgeführt.2 shows a section through part of an arcing chamber 1 '. The fixed contact 2 is provided with a contact body 12. The movable contact 3 has a contact body 13 on. The fixed contact 2 contains a sliding contact 14, the movable contact 3 a sliding contact 15. Between the contact bodies 12 and 18, a seal 16 is attached. The contact body 13 is provided with a shield 17. - The contact body 12 is pressed into its contact position with a cylindrical compression spring 19, with a further cylindrical compression spring 20 being associated with the contact body 18. The fixed contact 2 is connected by a current guide 21 to a connection contact, not shown. The sliding contact 15 has a current guide 22 in which an annular seal 24 is mounted. The movable contact 3 also contains a connecting star 23 which is connected to the insulating rod 5. The connection star 23 is held by means of two rings 25.

In Fig. 3 ist die Vorrichtung 11 und teilweise die Drehvorrichtung 10 aus Fig. 1 näher erläutert. In einem Zylindergehäuse 26 ist ein Ausschaltkolben 27 verschiebbar gelagert. Dieser Ausschaltkolben 27 ist mit einer Kolbenstange 28 verbunden und mit einem Dichtungsring 29 versehen, der in einer Nut 30 gelagert ist. Die Kolbenstange 28 ist mit einer sternförmigen Halterung 31 geführt. Im unteren Teil der Fig. 3 ist eine Eingriffsscheibe 32 der Drehvorrichtung 10 dargestellt. Um die Konstruktion dieser Eingriffsscheibe 32 besser zu verstehen, sollte man auch den in Fig. 4 gezeigten Schnitt IV-IV betrachten. Die Eingriffsscheibe 32 ist mit einem Stössel 33 versehen, der den Ausschaltkolben 27 berührt. Der Stössel 33 ist in zwei Führungsringen 34 geführt. Die Eingriffsscheibe 32 ist mit zwei Bohrungen 35 versehen. In Fig. 3 ist wegen der Uebersichtlichkeit nur eine Trennschraube 36 gezeichnet. Die Lage der übrigen Trennschrauben 36 ist aus Fig. 4 sichtbar. In der Eingriffsscheibe 32 sind mehrere Kippsegmente 37 drehbar mittels Lagerbolzen 39 befestigt. Die Trennschrauben 36 sind mit Distanzhülsen 38 versehen. Unter den Trennschrauben 36 ist ein Schutzblech 40 befestigt, das die Aufgabe hat, das Herausfallen der unteren Teile der Trennschrauben 36 zu verhindern. Mit der Bezugsziffer 41 ist die Mutter der Trennschraube 36 bezeichnet, wobei diese Mutter 41 mit einer Tellerfeder 42 unterstützt ist. Die Drehvorrichtung 10 ist mit einem Zylindergehäuse 43 versehen, wobei sowohl das Zylindergehäuse 43 als auch das Zylindergehäuse 26 mit entsprechenden schiebenförmigen Platten wegen der Einfachheit einstückig gezeichnet sind. Es ist selbstverständlich, dass sie aus Montagegründen aus mehreren Teilen bestehen. Wie in der Fig. 4 gut sichtbar ist, weist die Eingriffsscheibe 32 hakenförmige Teile 44 auf, in denen Ausnehmungen 45 für die Abstützung gegenüber den Trennschrauben 36 ausgebildet sind.In Fig. 3 the device 11 and partially the rotating device 10 of FIG. 1 is explained in more detail. In a cylinder housing 26, an opening piston 27 is slidably mounted. This switch-off piston 27 is connected to a piston rod 28 and provided with a sealing ring 29 which is mounted in a groove 30. The piston rod 28 is guided with a star-shaped holder 31. An engagement disk 32 of the rotating device 10 is shown in the lower part of FIG. 3. In order to better understand the construction of this engagement disk 32, one should also consider section IV-IV shown in FIG. The engagement disc 32 is provided with a plunger 33 which contacts the shut-off piston 27. The plunger 33 is guided in two guide rings 34. The engagement disk 32 is provided with two bores 35. In Fig. 3 only a separating screw 36 is drawn for clarity. The position of the other separating screws 36 can be seen from FIG. 4. A plurality of tilting segments 37 are rotatably fastened in the engagement disk 32 by means of bearing bolts 39. The separating screws 36 are provided with spacer sleeves 38. A fender 40 is fastened under the separating screws 36 and has the task of preventing the lower parts of the separating screws 36 from falling out. The reference number 41 denotes the nut of the separating screw 36, this nut 41 being supported with a plate spring 42. The rotating device 10 is provided with a cylinder housing 43, both the cylinder housing 43 and the cylinder housing 26 being drawn in one piece with corresponding slide-shaped plates because of the simplicity. It goes without saying that they consist of several parts for assembly reasons. As is clearly visible in FIG. 4, the engagement disk 32 has hook-shaped parts 44, in which recesses 45 are formed for the support relative to the separating screws 36.

Die Fig. 5 zeigt im Schnitt eine beispielsweise Ausgestalltung des Verbindungsteiles 9 aus Fig. 1. wobei in dieser Fig. 5 auch die Eingriffsscheibe 32 aus den Fig. 3 und 4 vereinfacht gezeigt ist. In einer Hülse 46 der Drehvorrichtung 10 ist ein Bolzen 48 gelagert. Die Hülse 46 ist mit zwei Tragarmen 46' gehalten, die auch in dem in Fig. 6 gezeigten Schnitt VI-VI gut sichtbar sind. Die Hülse 46 ist mit einer kulissenartigen Ausnehmung 47 versehen, die eine Schlinge bildet. In diese kulissenartige Ausnehmung 47 greift eine Rolle 49 ein, die drehbar im Bolzen 48 gelagert ist. Der Bolzen 48 trägt eine Platte 50, die mit zwei Zapfen 51 versehen ist. Diese Zapfen 51 dienen zum Eingreifen in die Bohrungen 35 der Eingriffsscheibe 32. Im unteren Teil der Fig. 5 ist ein Einschaltkolben 52 gezeigt, der mit einem Einschaltsstössel 53 verbinden ist. Dieser Einschaltstössel 53 weist eine ringförmige Nut 54 auf, in welche zwei nur symbolisch gezeichnete Fixierbolzen 55 eingreifen, die im Bolzen 48 eingepresst sind und die Drehbewegung des Bolzens 48 gegenüber dem Einschaltstössel 53 erlauben. Die Vorrichtung 8 mit dem Einschaltkolben 52 ist mit einem Zylindergehäuse 56 versehen, in dem eine Bohrung 57 ausgeführt ist. Der Einschaltkolben 52 wird mit einer Druckfeder 58 gegenüber dem Zylindergehäuse 56 abgestützt.FIG. 5 shows in section an example of the configuration of the connecting part 9 from FIG. 1, the engagement disk 32 from FIGS. 3 and 4 also being shown in simplified form in this FIG. 5. A bolt 48 is mounted in a sleeve 46 of the rotating device 10. The sleeve 46 is held by two support arms 46 ', which are also clearly visible in the section VI-VI shown in FIG. 6. The sleeve 46 is provided with a slot-like recess 47 which forms a loop. A roller 49, which is rotatably mounted in the bolt 48, engages in this link-like recess 47. The bolt 48 carries a plate 50 which is provided with two pins 51. These pins 51 serve to engage in the bores 35 of the engagement disk 32. In the lower part of FIG. 5, a switch-on piston 52 is shown, which is connected to a switch-in plunger 53. This switch-in plunger 53 has an annular groove 54, in which two fixing bolts 55, which are only symbolically drawn, engage, which are pressed into the bolt 48 and allow the rotary movement of the bolt 48 with respect to the switch-in plunger 53. The device 8 with the switch-on piston 52 is provided with a cylinder housing 56 in which a bore 57 is made. The switch-on piston 52 is supported with a compression spring 58 in relation to the cylinder housing 56.

Fig. 6 zeigt den Schnitt VI-VI aus der Fig. 5. In dieser Fig. sieht man gut die Lage der Rolle 49 in der Kulissenartigen Ausnemung 47 der Hülse der Drehvorrichtung 10.FIG. 6 shows the section VI-VI from FIG. 5. In this FIG. One can see the position of the roller 49 in the slot-like recess 47 of the sleeve of the rotating device 10.

In den Fig. 7 und 8 sind zwei Beispiele für die Verwendung des erfindungsgemässen Hochspannungsschalters 1 gezeigt. Mit der Bezugsziffer 59 sind Leitungsschalter bezeichnet, mit 60 Transformatoren, mit 61 Sammelschienen und mit 62 Leitungen. Wie aus der Fig. 7 ersichtlich, ist je ein Halbperioden-Hochspannungsschalter 1 in Serie mit einem Lietungsschalter 59 eingeschaltet, wobei diese Serienschaltung über je einen Transformator 60 die zuständige Sammelschiene 61 speist. Die beispielsweise Schaltung gemäss Fig. 8 zeigt eine Variante, bei der der erfindungsgemässe Halbperioden-Hochspannungsschalter 1 in Serie mit je einem Leistungsschalter 59 direkt in die Leitungen 62 in der Schaltanlage geschaltet ist.7 and 8 show two examples of the use of the high-voltage switch 1 according to the invention. The reference number 59 denotes line switches, with 60 transformers, with 61 busbars and with 62 lines. As can be seen from FIG. 7, a half-period high-voltage switch 1 is switched on in series with a supply switch 59, this series connection feeding the responsible busbar 61 via one transformer 60 each. The example circuit according to FIG. 8 shows a variant in which the half-cycle high-voltage switch 1 according to the invention is connected in series with one circuit breaker 59 each directly into the lines 62 in the switchgear.

Der für die schnelle Wirkungsweise des Erfindungsgemässen Halbperioden-Hochspannungsschalters 1 wichtigste Bestandteil wird durch die Trennschrauben 36 in diesem Beispiel in Zusammenarbeit mit der Eingriffsscheibe 32 massgebend. Die Trennschrauben sind an sich bekannt. Es sind Schrauben, die über eine nicht dargestellte Zündsteuerung einen Auslöseimpuls erhalten, wobei sie in der Sollzone abgesprengt werden und sich in den Halterungen vernieten.The most important component for the fast operation of the half-period high-voltage switch 1 according to the invention is determined by the separating screws 36 in this example in cooperation with the engagement disk 32. The separating screws are known per se. They are screws that receive a triggering pulse via an ignition control (not shown), whereby they are blasted off in the target zone and riveted into the brackets.

Die Funktionsweise des Halbperioden-Hochspannungsschalters ist praktisch schon aus den Zeichnungen und aus deren Beschreibung sichtbar.The functioning of the half-period high-voltage switch is practically visible from the drawings and from their description.

Beim Ausschalten des Halbperioden-Hochspannungsschalters 1 ist die Funktionsweise wie folgt: Wenn ein Auslösesystem einen Fehlerstrom detektiert, der einen vorgegebenen Schwellenwert überschreiten wird, gibt es einen Auslöseimpuls auf die die vorgespannte Kolbenstange 28 haltende Trennschraube 36. Bei Verwendung von mehreren Trennschrauben 36 in einer vorrichtung überträgt die Zündsteuerung den Auslöseimpuls auf die Trennschraube bzw. die Tennschrauben 36, die gerade im Eingriff mit der Eingriffsscheibe 32 sind. Die Trennschraube 36 wird abgesprengt und löst die mechanische Verbindung zwischen dem Zylindergehäuse 43 der Drehvorrichtung 10 und der Eingriffsscheibe 32. Im äusseren Teil der Löschkammer 1' befindet sich gasgemisch SFJ N2, das durch die Schaltersäule aus dem Hochdruckbehälter 6 in die Löschkammer 1' eingedrungen ist. Nachdem die Trennschraube 366 abgesprengt wurde, beschleunigt der Ausschaltkoblen 27 unter der Wirkung des ständig anstehenden Gasgemisch-Druckes die beweglichen Kontakte 3. Die Dichtung 16 in der Löschkammer 1' öffnet und gibt den Druck auf die Kontakte 12, 13 frei. Nach Kontakttrennung wird der Lichtbogen scharf beblasen und im Null-Durchgang gelöscht. Der in der folge öffnende Leistungsschalter 59 übernimmt die Isolation.When the half-period high-voltage switch 1 is switched off, the mode of operation is as follows: If a triggering system detects a fault current that will exceed a predetermined threshold value, there is a triggering pulse on the separating screw 36 holding the prestressed piston rod 28. When using a plurality of separating screws 36 in one device the ignition control transmits the trigger pulse on the separating screw or the tennis screws 36 which are currently in engagement with the engagement disk 32. The separating screw 36 is blown off and releases the mechanical connection between the cylinder housing 43 of the rotating device 10 and the engagement disk 32. In the outer part of the quenching chamber 1 'there is gas mixture SFJ N 2 which has penetrated from the high-pressure container 6 into the quenching chamber 1' through the switch column is. After the separating screw 366 has been blown off, the switch-off valve 27 accelerates the movable contacts 3 under the effect of the constantly present gas mixture pressure. The seal 16 in the arcing chamber 1 'opens and releases the pressure on the contacts 12, 13. After the contact has been separated, the arc is blown sharply and extinguished in the zero passage. The circuit breaker 59 which opens in the following takes over the insulation.

Die stromlose Einschaltung des Halbperioden- Hochspannungsschalters 1 folgt sofort auf die Ausschaltung. Das Nachfüllventil 7 des Hochdruckbehälters 6 wird geöffnet und das in die Schaltersäule einströmende SFB/N2-Gemisch strömt unter den Einschaltkolben 52 und bewegt diesen in der Einschaltrichtung. Der Einschaltkolben 52 nimmt den Bolzen 48 der Drehvorrichtung 10 mit. Die mit den Zapfen 51 fixierte Eingriffsscheibe 32 wird ebenfalls mitgenommen und am Ende der Bewegung in einer intakten Trennschraube 36 verriegelt. Gleichfalls mitgenommen und in Einschaltrichtung bewegt werden der Ausschaltkolben 27 und die damit fest verbunden Elemente: die Isolierstange 5 und die beweglichen Kontakte 3. Wenn der Druck in dem Hochspannungsschalter 1 wieder seinen Nennwert erreicht hat, wird das Nachfüllventil 7 abgeschlossen und der Halbperioden-Hochspannungsschalter 1 ist wieder für eine Ausschaltung bereit.The de-energized switching on of the half-period high-voltage switch 1 immediately follows the switching off. The refill valve 7 of the high-pressure container 6 is opened and the SF B / N 2 mixture flowing into the switch column flows under the switch-on piston 52 and moves it in the switch-on direction. The closing piston 52 takes the bolt 48 of the rotating device 10 with it. The engagement disk 32 fixed with the pin 51 is also taken along and locked in an intact separating screw 36 at the end of the movement. Likewise carried and moved in the switch-on direction, the switch-off piston 27 and the elements firmly connected to it: the isolating rod 5 and the movable contacts 3. When the pressure in the high-voltage switch 1 has reached its nominal value again, the refill valve 7 is closed and the half-period high-voltage switch 1 is ready to be switched off again.

Es ist selbstverständlich, dass der Erfindungsgegenstand auf das in der Zeichnung Dargestellte nicht beschränkt ist. So kann z.B. nur eine Trennschraube 36 verwendet werden, die jedoch nach jedem Aus- und Einschalten ausgewchselt werden muss. dieser Nachteil wird teilweise dadurch kompensiet, dass die Konstruktion der Aus-und Einschaltvorrichtung vereinfacht werden kann. Der Erfindungsgegenstand ist auch für andere Schalterarten geeignet, als dargestellt.It goes without saying that the subject matter of the invention is not limited to what is shown in the drawing. For example, only a separating screw 36 can be used, which, however, must be replaced after each switching off and on. This disadvantage is partially compensated for by the fact that the design of the switch-off and switch-on device can be simplified. The subject of the invention is also suitable for other types of switches than shown.

Claims (7)

1. High-voltage switch comprising at least one moving contact (3) which, in its switched-on position, is acted upon by an initial tension in the switched-off direction, and a device for latching the moving contact (3) in the switched-on position, in which arrangement the latching can be released by detonating an explosive charge, characterised in that the latching device is provided with at least two separating screws (36), of which a first separating screw (36) effects the latching of the moving contact (3) in the switched-on position and a second separating screw (36) effects the latching of the moving contact (3) after a new switching-on action following a switching- off action.
2. High-voltage switch according to Claim 1, characterised in that the latching device is effectively connected to a rotating device (10) in the cylindrical housing (43) of which at least two of the separating screws (36) are mounted and an engagement disc (32) is rotatably supported which is provided with recesses (45) for supporting it on the separating screws (36), and that the engagement disc (32) is separably connected to a bolt (48) of the rotating device, in which arrangement this bolt (48) is provided with a crank-like rotation guide (47, 49) and is connected to a switching-on piston (52).
3. High-voltage switch according to Claim 2, characterised in that the separating screws (36) are mounted in the cylindrical housing (43) of the rotating device (10) at the same distance from the axis of rotation.
4. High-voltage switch according to one of claims 2 or 3, characterised in that the first separating screw (36) is mounted both in the cylindrical housing (43) of the rotating device (10) and in the engagement disc (32).
5. High-voltage switch according to one of Claims 2 to 4, characterised in that the separating screws (36) and the recesses (45) in the engagement disc (32) are constructed in two or more steps in the direction of the axis of rotation.
6. High-voltage switch according to one of Claims 2 to 5, characterised in that the crank-like rotation guide (47, 49) is formed by a roller (49) which is arranged to be rotatable in the bolt (48) and which engages a crank-like recess (47) in the inside wall of the sleeve (46) of the rotating device (10), in which arrangement the recess (47) forms a loop.
7. Application of the high-voltage switch according to claims 1 to 6 as a half-period high-voltage switch in series with at least one circuit breaker (59) in a switching system (Figures 7 and 8).
EP82201664A 1982-01-28 1982-12-28 High voltage circuit breaker and its use Expired EP0085205B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82201664T ATE18318T1 (en) 1982-01-28 1982-12-28 HIGH VOLTAGE SWITCH AND ITS USE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH518/82 1982-01-28
CH51882 1982-01-28

Publications (2)

Publication Number Publication Date
EP0085205A1 EP0085205A1 (en) 1983-08-10
EP0085205B1 true EP0085205B1 (en) 1986-02-26

Family

ID=4188835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82201664A Expired EP0085205B1 (en) 1982-01-28 1982-12-28 High voltage circuit breaker and its use

Country Status (5)

Country Link
US (1) US4499351A (en)
EP (1) EP0085205B1 (en)
JP (1) JPS58129721A (en)
AT (1) ATE18318T1 (en)
DE (1) DE3269534D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH663685A5 (en) * 1983-11-11 1987-12-31 Bbc Brown Boveri & Cie DISCONNECTOR.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067505B (en) * 1954-02-06 1959-10-22 Emag Elek Zitaets Ges M B H Electric switch
US3103569A (en) * 1960-05-05 1963-09-10 High speed circuit closing device
FR1535272A (en) * 1966-08-29 1968-08-02 Asea Ab High voltage switch
DE1917724C3 (en) * 1969-04-05 1973-10-18 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit breaker for very short switch-off times
FR2058869A5 (en) * 1969-09-30 1971-05-28 Propulsion Par Reaction
US4354072A (en) * 1979-10-22 1982-10-12 General Electric Company Pyrolytic cartridge interruption assistance actuator for puffer breaker

Also Published As

Publication number Publication date
DE3269534D1 (en) 1986-04-03
ATE18318T1 (en) 1986-03-15
US4499351A (en) 1985-02-12
EP0085205A1 (en) 1983-08-10
JPS58129721A (en) 1983-08-02

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