EP3928339B1 - High-voltage circuit breaker system - Google Patents

High-voltage circuit breaker system Download PDF

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Publication number
EP3928339B1
EP3928339B1 EP20707002.0A EP20707002A EP3928339B1 EP 3928339 B1 EP3928339 B1 EP 3928339B1 EP 20707002 A EP20707002 A EP 20707002A EP 3928339 B1 EP3928339 B1 EP 3928339B1
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EP
European Patent Office
Prior art keywords
crankshaft
circuit breaker
movement
voltage circuit
rotation
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.)
Active
Application number
EP20707002.0A
Other languages
German (de)
French (fr)
Other versions
EP3928339C0 (en
EP3928339A1 (en
Inventor
Paul Gregor Nikolic
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 Energy Global GmbH and Co KG
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Siemens Energy Global GmbH and Co KG
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Publication of EP3928339A1 publication Critical patent/EP3928339A1/en
Application granted granted Critical
Publication of EP3928339C0 publication Critical patent/EP3928339C0/en
Publication of EP3928339B1 publication Critical patent/EP3928339B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • 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
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • 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
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H2003/3094—Power arrangements internal to the switch for operating the driving mechanism using spring motor allowing an opening - closing - opening [OCO] sequence

Definitions

  • the invention relates to a high-voltage circuit-breaker system according to the preamble of patent claim 1.
  • So-called short circuit breakers are defined for fault clearance in high and extra-high voltage networks, i.e. at voltages over 110 kilovolts in overhead lines. If a short-circuit is caused, for example, by a falling tree, a falling branch or a large bird, the switch interrupts the short-circuit current within a very short time. The circuit breaker switches off in a time of approx. 300 milliseconds and thus separates the area in which the short circuit occurs from the rest of the network. Since short circuits of this type often regenerate themselves, for example because the element causing the short circuit has burned off, the circuit breaker is closed again after a defined time, which is generally less than one second. If it is determined that the short circuit no longer occurs, the circuit breaker remains closed.
  • the switch must be opened again very quickly, i.e. also within approx. 300 milliseconds, in order to prevent further damage to the network. This opening then remains stationary for the time being until the cause has been remedied manually.
  • Such functionality which usually corresponds to the specifications of the network operator, is called open-close-open functionality, abbreviated O-C-O.
  • the object of the invention is to provide a circuit breaker system for a high-voltage application which has the open-close-open functionality and, compared to the prior art, has a technically less complex and compact drive system for a number of circuit breakers.
  • the high-voltage circuit breaker system according to the invention with an auto-reclosing function which results in an opening, closing and reopening movement of a contact system, comprises precisely this contact system which is mechanically connected to a drive system.
  • the drive system has a drive assembly.
  • the drive system also includes a drive shaft, which is designed in the form of a crankshaft. This crankshaft is connected to a moving contact of the contact system via a connecting rod.
  • the invention is characterized in that the cycle of the opening, closing and renewed opening movement of the contact system takes place through a unidirectional rotary movement of the crankshaft.
  • the advantage of the invention is that a drive unit performs the required opening, closing and further opening process via the crankshaft in a unidirectional rotary movement during one revolution of a shaft can.
  • This construction makes it possible to use simple drive units, such as electric motors or spiral springs. This significantly reduces the technical effort involved in constructing the drive unit. Due to the reduced technical complexity, the corresponding drive units can also be made more cost-effective.
  • a crankshaft is a shaft with one or more cranks that describe an eccentric rotary movement with respect to the axis of rotation of the shaft.
  • a push rod or connecting rod may be attached to the cranks, thereby converting rotational movement of the crankshaft into translational movement.
  • a crank can be a conventional elongated lever, but a crank can also be designed in the form of an extender disk.
  • An auto-reclosing function of a circuit breaker is, in the event of a short circuit, to open the power line for a short time, on the order of less than half a second, to short it out again for a similar period of time, after which it is possible to check whether a short circuit is still present, and to open it again , if there is still a short circuit. Should the short circuit clear during the first interrupt interval, the circuit breaker will remain in the closed position.
  • mechanically connected means that there is a mechanical connection for the transmission of a force, an impulse or an action between two systems, for example via movable connections such as bearings or joints, but also via fixed connections such as material or non-positive connections or from combinations of movable and fixed connections.
  • the crankshaft is designed in such a way that, starting from a closed position of the contact system to an open position of the contact system, a unidirectional rotary movement is performed, which is between 150° and 210° with respect to its axis of rotation.
  • a rotary movement of 180° between the closed position and the open position is advantageous. Due to geometrical requirements and taking into account opening and closing times, the optimum rotational movement for the opening process can be in a range that deviates from 180°, that is between 150° and 210°.
  • the crankshaft is designed in such a way that for the cycle of opening, closing and renewed opening movement of the contact system, a unidirectional rotary movement is performed with respect to the axis of rotation of the crankshaft, which is between 350° and 360° plus 10°.
  • a unidirectional rotary movement is performed with respect to the axis of rotation of the crankshaft, which is between 350° and 360° plus 10°.
  • an increased or reduced contact pressure between contacts of the contact system can, for example, be implemented by over-rotation or under-rotation, that is to say 10° less than 360° or 10° more than 360°.
  • the crankshaft is preferably designed in such a way that a crank pin which is eccentric with respect to the axis of rotation is arranged on a crank and describes a circular movement about the axis of rotation of the crankshaft during the rotary movement of the crankshaft. It is also useful that this crank pin is aligned parallel to the axis of rotation. Furthermore, the crank pin can be surrounded by a plain bearing of the connecting rod, thus ensuring the transmission of power and the conversion of the rotary movement into a translatory movement.
  • the crankshaft has at least three cranks, which has the advantage that a number of circuit breakers can be operated simultaneously by a drive shaft, ie by the crankshaft and by a drive.
  • the term three cranks means that at least three pins are present, each of which is surrounded by a pair of cranks and rotate at an eccentric distance from the axis of rotation of the crankshaft.
  • crank and pair of cranks have equivalent meanings, since when using more than one crank or pair of cranks and a rotational movement of almost or more than 360°, pairs of cranks are inevitably required in order not to block the rotational movement of the connecting rod.
  • cranks or pairs of cranks have different rotational directions with respect to the axis of rotation of the crankshaft.
  • the first crank or the first pair of cranks preferably points in one direction
  • the second pair of cranks points in a second direction, which is offset in the order of 180° to the first crank.
  • the third crank again preferably points in the direction of the first crank.
  • three circuit breakers can be operated by a common crankshaft and a common drive. It is also possible to move the circuit breakers closer to one another due to the offset design of the cranks, since they are arranged offset, which results in a roughly triangular arrangement of the circuit breakers. In this way, a great deal of installation space can be saved when accommodating the circuit breakers.
  • FIG. 1 1 is a schematic representation of a high voltage circuit breaker system having a contact system 4 arranged in a housing 42.
  • the housing 42 is basically designed to be gas-tight; an insulating gas can be present inside the housing, which can be, for example, sulfur hexafluoride or a fluoroketone or a fluoronitrile. However, the insulating gas can also be synthetic, cleaned air.
  • the circuit breaker 2 can also include a vacuum tube.
  • the contact system 4 has a fixed contact 44 and a moving contact 14 .
  • the moving contact 14 is connected to a contact bolt 40 which in turn is mechanically connected to a crankshaft 10 via a connecting rod 12 .
  • the push rod 12 can be designed, for example, in the form of a conventional connecting rod.
  • the connecting rod 12 has a sliding bearing 38 or 40 at each of its ends, with the sliding bearing 38 being fastened to a pin 34 which is part of the crankshaft 10 .
  • the journal 34 is framed by two cranks 32 which bring about the eccentric arrangement of the journal 34 from an axis of rotation 30 of the crankshaft 10 .
  • the crankshaft 10 in turn is part of a drive system 6 which includes a drive unit 8 in addition to the crankshaft 10 .
  • Various drive technologies can be used for the drive unit 8 .
  • an electric motor can ensure the drive, but spiral springs can also be used.
  • the crankshaft 10 is supported in bearings 48 .
  • the drive unit 8 is designed in such a way that it moves in a direction of rotation 16 so that the crankshaft 10 also performs a unidirectional rotary movement along the arrow 16 . If this rotary movement 16 about the axis of rotation 30 of the crankshaft 10 takes place once by 360°, this leads to the results as shown in FIGS figures 2 , 3 and 4 is shown, first to an opening movement along the arrow 20 according to figure 2 , wherein for the maximum opening width of the contact system 4, ie the maximum movement of the moving contact 4, a 180° rotary movement of the crankshaft 10 along the direction of rotation 16 takes place.
  • a tripping unit (not shown here) gives the signal for a further 180° movement of the crankshaft 10, as per FIG figure 4 along the arrow 24 means a further opening movement.
  • the cycle which includes an opening, closing and reopening process, is completed.
  • the high-voltage circuit breaker 2 initially remains open at this point.
  • this cycle is illustrated schematically along a time axis. At the time before and at time T 0 there is no short circuit or any other confirmation of the network, so that the high-voltage circuit breaker 2 is closed in its basic position.
  • the switch is switched back to normal figure 3 closed, this is present at time T 2 . If the event causing the short circuit is still present, there is a further opening movement up to time T 3 , according to FIG figure 4 .
  • FIG 5 a circuit breaker system 2 is shown in which three circuit breakers 3 are arranged next to one another and are jointly driven by a drive system 6 .
  • the crankshaft 10 according to figure 5 has three cranks 32 which are each connected to a circuit breaker 3 .
  • the three circuit breakers 3 are switches for the individual phases of a power grid, which can be used to switch in the circuit breaker system 2 with a drive system 6 at the same time.
  • the processes of the rotary movement along the arrow 16 correspond to what is described with reference to FIGS.
  • FIG 6 an analog circuit breaker system 2 is shown, which basically carries out the same movement sequences as is already the case with regard to the Figures 1 to 4 is described.
  • the system 2 differs in the shape of the crankshaft 10, the crank 32 of the crankshaft 10 being designed in the form of an eccentric disk and being arranged at one end of the crankshaft 10.
  • the crank pin 34 is arranged on the crank 32 in the form of an eccentric disc without a counter bearing in a second crank.
  • FIG. 8 a cross section through a crankshaft 10 in the area of the crank pin 34 between two cranks 32 is shown. It is shown how the slide bearing 38, which in turn is connected to a push rod 12, is arranged around the crank pin 34. It is in figure 8 also evident how the crank pin 34 describes a rotational movement 36 eccentrically to the axis of rotation 30 and can complete a unidirectional rotation of initially 360° for opening and closing and then, if necessary, by a further 180°.
  • the end of the push rod 12, which is provided with a further slide bearing (see FIG. 1, reference number 46), is in engagement with the contact pin 40, which is not shown in detail here.
  • Such a circuit breaker system also has a contact system 4', which includes a fixed contact 44' and a moving contact 14', which in turn is operatively connected to a contact pin 40'.
  • the contact system 4' is surrounded by a housing 42'.
  • the cycle opening-closing and reopening which is illustrated by the arrows 20', 22', is designed by a complex spring mechanism, with two spring accumulators 50-I and 50-II via a Rocker arms 52 are connected, which is shown here very schematically.
  • the rocker arm 52 has the effect that when the contact system 4' is opened, a spring-loaded accumulator 50-I is relieved and, in return, the spring-loaded accumulator 50-II is tensioned. This process is reversed with a further opening or closing movement.
  • This is an extremely complex mechanical arrangement that can be implemented alternatively by the technically simpler embodiment of the crankshaft 10 described.

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  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)

Description

Die Erfindung betrifft einen Hochspannungs-Leistungsschaltersystem nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a high-voltage circuit-breaker system according to the preamble of patent claim 1.

Für die Fehlerklärung in Hoch- und Höchstspannungsnetzen, also bei Spannungen über 110 Kilovolt in Freileitungen sind sogenannte Kurzunterbrecher definiert. Sollte ein Kurzschluss beispielsweise durch einen umfallenden Baum, einen herabfallenden Ast oder durch einen großen Vogel hervorgerufen werden, kommt es innerhalb von kürzester Zeit durch den Schalter zu einer Unterbrechung des Kurzschlussstromes. Der Leistungsschalter schaltet dabei in einer Zeit von ca. 300 Millisekunden ab und trennt somit den Bereich, in dem der Kurzschluss auftritt, vom übrigen Netz. Da sich derartige Kurzschlüsse häufig selbst regenerieren, da beispielsweise das den Kurzschluss erzeugende Element abgebrannt ist, wird nach einer definierten Zeit, die in der Regel weniger als eine Sekunde beträgt, der Leistungsschalter wieder geschlossen. Wird dabei festgestellt, dass der Kurzschluss nicht mehr auftritt, bleibt der Leistungsschalter geschlossen. Sollte der Kurzschluss immer noch bestehen, muss in sehr kurzer Zeit, also ebenfalls in ca. 300 Millisekunden, der Schalter wieder geöffnet werden, um weitere Schäden am Netz zu verhindern. Diese Öffnung bleibt dann vorerst stationär, bis die Ursache manuell behoben ist. Eine derartige Funktionalität, die in der Regel den Vorgaben des Netzbetreibers entspricht, nennt man Open-Close-Open-Funktionalität, abgekürzt O-C-O.So-called short circuit breakers are defined for fault clearance in high and extra-high voltage networks, i.e. at voltages over 110 kilovolts in overhead lines. If a short-circuit is caused, for example, by a falling tree, a falling branch or a large bird, the switch interrupts the short-circuit current within a very short time. The circuit breaker switches off in a time of approx. 300 milliseconds and thus separates the area in which the short circuit occurs from the rest of the network. Since short circuits of this type often regenerate themselves, for example because the element causing the short circuit has burned off, the circuit breaker is closed again after a defined time, which is generally less than one second. If it is determined that the short circuit no longer occurs, the circuit breaker remains closed. If the short-circuit persists, the switch must be opened again very quickly, i.e. also within approx. 300 milliseconds, in order to prevent further damage to the network. This opening then remains stationary for the time being until the cause has been remedied manually. Such functionality, which usually corresponds to the specifications of the network operator, is called open-close-open functionality, abbreviated O-C-O.

Herkömmliche Leistungsschalter im Hochspannungsnetz haben für diese O-C-O-Funktionalität Federspeicherantriebe, durch die ein Ein- und wieder Ausschalten realisiert werden kann. Dabei wird bei der Schalthandlung jeweils ein Federspeicher ausgelöst und der andere Federspeicher dabei gespannt, bei der nächsten Schalthandlung wird dieser Auslöse-Spannvorgang umgekehrt. Diese Bauart ist zwar weit etabliert, ihre Umsetzung bedarf jedoch jeweils eines relativ hohen mechanischen Aufwandes. Außerdem ist der Auslösemechanismus für jede Öffnungs- bzw. Schließhandlung technisch komplex. Aus der EP 2 421 017 A1 ist eine Schaltanlage für Mittelspannungen bekannt, mit einer Kurbelwelle, welche drei Pole synchron schaltet. Das Dokument EP2421017 offenbart ein Hochspannungs-Leistungsschaltersystem nach dem Oberbegriff des Anspruchs 1.For this OCO functionality, conventional circuit breakers in the high-voltage grid have stored-energy spring mechanisms, which can be used to switch them on and off again. During the switching operation, one spring accumulator is triggered and the other spring accumulator is tensioned. This release-tensioning process is reversed for the next switching operation. While this design is well established, its implementation However, each requires a relatively high mechanical effort. In addition, the triggering mechanism for each opening or closing action is technically complex. From the EP 2 421 017 A1 a switchgear for medium voltages is known, with a crankshaft which switches three poles synchronously. The document EP2421017 discloses a high voltage circuit breaker system according to the preamble of claim 1.

Die Aufgabe der Erfindung besteht darin, einen Leistungsschaltersystem für eine Hochspannungsanwendung bereitzustellen, der die Open-Close-Open-Funktionalität aufweist, und dabei gegenüber dem Stand der Technik ein technisch weniger aufwendiges und kompaktes Antriebssystem für mehrere Leistungsschalter aufweist.The object of the invention is to provide a circuit breaker system for a high-voltage application which has the open-close-open functionality and, compared to the prior art, has a technically less complex and compact drive system for a number of circuit breakers.

Die Lösung der Aufgabe besteht in einem Hochspannungs-Leistungsschaltersystem mit den Merkmalen des Patentanspruchs 1.The solution to the problem consists in a high-voltage circuit breaker system with the features of patent claim 1.

Der erfindungsgemäße Hochspannungs-Leistungsschaltersystem mit einer Kurzunterbrecherfunktion, die in einer Öffnungs-, Schließ- und erneuten Öffnungsbewegung eines Kontaktsystems resultiert, umfasst eben dieses Kontaktsystem, das mit einem Antriebssystem mechanisch in Verbindung steht. Dabei weist das Antriebssystem ein Antriebsaggregat auf. Neben dem Antriebsaggregat umfasst das Antriebssystem ferner eine Antriebswelle, die in Form einer Kurbelwelle ausgestaltet ist. Diese Kurbelwelle ist über eine Schubstange mit einem Bewegkontakt des Kontaktsystems verbunden. Ferner zeichnet sich die Erfindung dadurch aus, dass der Zyklus der Öffnungs-, Schließ- und erneuten Öffnungsbewegung des Kontaktsystems durch eine unidirektionale Drehbewegung der Kurbelwelle erfolgt.The high-voltage circuit breaker system according to the invention with an auto-reclosing function, which results in an opening, closing and reopening movement of a contact system, comprises precisely this contact system which is mechanically connected to a drive system. The drive system has a drive assembly. In addition to the drive unit, the drive system also includes a drive shaft, which is designed in the form of a crankshaft. This crankshaft is connected to a moving contact of the contact system via a connecting rod. Furthermore, the invention is characterized in that the cycle of the opening, closing and renewed opening movement of the contact system takes place through a unidirectional rotary movement of the crankshaft.

Im Gegenzug zu den herkömmlich verwendeten Federspeicherantrieben besteht der Vorteil der Erfindung darin, dass über die Kurbelwelle eine Antriebseinheit in einer unidirektionalen Drehbewegung bei einer Umdrehung einer Welle den geforderten Öffnungs-, Schließ- und weiteren Öffnungsvorgang vollziehen kann. Durch diese Konstruktion ist es möglich, einfache Antriebsaggregate in Anwendung zu bringen, beispielsweise Elektromotoren oder Spiralfedern. Dies reduziert den technischen Aufwand bei der Konstruktion der Antriebseinheit erheblich. Durch den reduzierten technischen Aufwand lassen sich die entsprechenden Antriebseinheiten auch kostengünstiger darstellen.In contrast to the spring-loaded drives conventionally used, the advantage of the invention is that a drive unit performs the required opening, closing and further opening process via the crankshaft in a unidirectional rotary movement during one revolution of a shaft can. This construction makes it possible to use simple drive units, such as electric motors or spiral springs. This significantly reduces the technical effort involved in constructing the drive unit. Due to the reduced technical complexity, the corresponding drive units can also be made more cost-effective.

Eine Kurbelwelle ist eine Welle mit einer oder mehreren Kurbeln, die bezüglich einer Drehachse der Welle eine exzentrische Drehbewegung beschreiben. An den Kurbeln kann eine Schubstange oder Pleuelstange befestigt sein, wodurch eine Drehbewegung der Kurbelwelle in eine translatorische Bewegung umgewandelt wird. Eine Kurbel kann ein herkömmlicher länglicher Hebel sein, eine Kurbel kann aber auch in Form einer Extenderscheibe ausgestaltet sein.A crankshaft is a shaft with one or more cranks that describe an eccentric rotary movement with respect to the axis of rotation of the shaft. A push rod or connecting rod may be attached to the cranks, thereby converting rotational movement of the crankshaft into translational movement. A crank can be a conventional elongated lever, but a crank can also be designed in the form of an extender disk.

Eine Kurzunterbrecherfunktion eines Leistungsschalters besteht darin, bei einem Kurzschluss die Stromleitung für kurze Zeit, in der Größenordnung von weniger als einer halben Sekunde zu öffnen, sie für einen ähnlichen Zeitraum wieder kurzzuschließen, worauf eine Überprüfung eines noch vorliegenden Kurzschlusses möglich ist und erneut wieder zu öffnen, falls noch ein Kurzschluss anliegt. Sollte sich der Kurzschluss während des ersten Unterbrecherintervalls behoben haben, so bleibt der Leistungsschalter in der geschlossenen Position stehen.An auto-reclosing function of a circuit breaker is, in the event of a short circuit, to open the power line for a short time, on the order of less than half a second, to short it out again for a similar period of time, after which it is possible to check whether a short circuit is still present, and to open it again , if there is still a short circuit. Should the short circuit clear during the first interrupt interval, the circuit breaker will remain in the closed position.

Unter dem Begriff mechanisch in Verbindung stehen wird verstanden, dass zur Übertragung einer Kraft, eines Impulses oder einer Aktion zwischen zwei Systemen eine mechanische Verbindung besteht, die beispielsweise über bewegliche Verbindungen wie Lager oder Gelenke, aber auch über feste Verbindungen wie stoffschlüssige oder Kraftschlüssige Verbindungen oder aus Kombinationen aus beweglichen und festen Verbindungen erfolgen kann.The term “mechanically connected” means that there is a mechanical connection for the transmission of a force, an impulse or an action between two systems, for example via movable connections such as bearings or joints, but also via fixed connections such as material or non-positive connections or from combinations of movable and fixed connections.

In einer Ausgestaltungsform der Erfindung ist die Kurbelwelle in der Art ausgebildet, dass ausgehend von einer Schließposition des Kontaktsystems zu einer Öffnungsposition des Kontaktsystems eine unidirektionale Drehbewegung vollzogen wird, die bezüglich ihrer Drehachse zwischen 150° und 210° liegt. Grundsätzlich ist bei der Anwendung einer Kurbelwelle eine Drehbewegung von 180° zwischen der Schließposition und der Öffnungsposition vorteilhaft. Durch geometrische Anforderungen bzw. unter Berücksichtigung von Öffnungs- bzw. Schließzeiten kann die optimale Drehbewegung für den Öffnungsvorgang in einem Bereich liegen, der von 180° abweicht, also zwischen 150° und 210° liegt.In one embodiment of the invention, the crankshaft is designed in such a way that, starting from a closed position of the contact system to an open position of the contact system, a unidirectional rotary movement is performed, which is between 150° and 210° with respect to its axis of rotation. Basically, when using a crankshaft, a rotary movement of 180° between the closed position and the open position is advantageous. Due to geometrical requirements and taking into account opening and closing times, the optimum rotational movement for the opening process can be in a range that deviates from 180°, that is between 150° and 210°.

In einer weiteren Ausgestaltungsform der Erfindung ist die Kurbelwelle so ausgestaltet, dass für den Zyklus Öffnungs-, Schließ- und erneute Öffnungsbewegung des Kontaktsystems eine unidirektionale Drehbewegung bezüglich der Drehachse der Kurbelwelle vollzogen wird, die zwischen 350° und 360° plus 10° liegt. Auch hier ist es wieder zweckmäßig, dass für den gesamten Zyklus grundsätzlich eine Drehbewegung der Kurbelwelle von 360° stattfindet. Grundsätzlich kann aber durch eine Überdrehung bzw. Unterdrehung, das heißt also 10° weniger als 360° oder 10° mehr als 360° beispielsweise ein erhöhter oder erniedrigter Anpressdruck zwischen Kontakten des Kontaktsystems vollzogen werden.In a further embodiment of the invention, the crankshaft is designed in such a way that for the cycle of opening, closing and renewed opening movement of the contact system, a unidirectional rotary movement is performed with respect to the axis of rotation of the crankshaft, which is between 350° and 360° plus 10°. Here, too, it is useful for the crankshaft to rotate by 360° for the entire cycle. In principle, however, an increased or reduced contact pressure between contacts of the contact system can, for example, be implemented by over-rotation or under-rotation, that is to say 10° less than 360° or 10° more than 360°.

Die Kurbelwelle ist bevorzugt in der Art ausgestaltet, dass an einer Kurbel ein bezüglich der Drehachse exzentrischer Kurbelzapfen angeordnet ist, der bei der Drehbewegung der Kurbelwelle eine kreisförmige Bewegung um die Drehachse der Kurbelwelle beschreibt. Dabei ist es auch zweckmäßig, dass dieser Kurbelzapfen parallel zur Drehachse ausgerichtet ist. Im Weiteren kann der Kurbelzapfen von einem Gleitlager der Schubstange umfasst sein, somit ist die Kraftübertragung und die Umwandlung der Drehbewegung in einer translatorischen Bewegung gewährleistet.The crankshaft is preferably designed in such a way that a crank pin which is eccentric with respect to the axis of rotation is arranged on a crank and describes a circular movement about the axis of rotation of the crankshaft during the rotary movement of the crankshaft. It is also useful that this crank pin is aligned parallel to the axis of rotation. Furthermore, the crank pin can be surrounded by a plain bearing of the connecting rod, thus ensuring the transmission of power and the conversion of the rotary movement into a translatory movement.

Die Kurbelwelle weist mindestens drei Kurbeln, auf, was den Vorteil hat, dass durch eine Antriebswelle, also durch die Kurbelwelle und durch einen Antrieb mehrere Leistungsschalter gleichzeitig betrieben werden können. Bei dem Begriff drei Kurbeln wird bauartbedingt darunter verstanden, dass mindestens drei Zapfen vorhanden sind, die jeweils von einem Paar von Kurbeln eingefasst sind und in einem exzentrischen Abstand zur Drehachse der Kurbelwelle rotieren. Die Begriffe Kurbel und Kurbelpaar haben dabei äquivalente Bedeutung, da bei Anwendung von mehr als einer Kurbel bzw. Kurbelpaar und einer Drehbewegung von nahezu oder mehr als 360° zwangsläufig Kurbelpaare erforderlich sind um die Drehbewegung der Schubstange nicht zu blockieren.The crankshaft has at least three cranks, which has the advantage that a number of circuit breakers can be operated simultaneously by a drive shaft, ie by the crankshaft and by a drive. Depending on the design, the term three cranks means that at least three pins are present, each of which is surrounded by a pair of cranks and rotate at an eccentric distance from the axis of rotation of the crankshaft. The terms crank and pair of cranks have equivalent meanings, since when using more than one crank or pair of cranks and a rotational movement of almost or more than 360°, pairs of cranks are inevitably required in order not to block the rotational movement of the connecting rod.

Diese drei Kurbeln bzw. Kurbelpaare weisen unterschiedliche rotatorische Richtungen bezüglich der Rotationsachse der Kurbelwelle auf. Bevorzugt zeigt die erste Kurbel bzw. das erste Kurbelpaar in eine Richtung, das zweite Kurbelpaar in eine zweite Richtung, die in der Größenordnung von 180° zur ersten Kurbel versetzt ist. Die dritte Kurbel weist dabei wieder bevorzugt in die Richtung der ersten Kurbel. Auf diese Weise können drei Leistungsschalter einerseits durch eine gemeinsame Kurbelwelle und durch einen gemeinsamen Antrieb betrieben werden, es ist zudem möglich, durch die versetzte Bauart der Kurbeln die Leistungsschalter näher aneinanderzurücken, da sie versetzt angeordnet sind, was in etwa einer Dreiecksanordnung der Leistungsschalter resultiert. Auf diese Weise kann sehr viel Bauraum bei der Unterbringung der Leistungsschalter eingespart werden.These three cranks or pairs of cranks have different rotational directions with respect to the axis of rotation of the crankshaft. The first crank or the first pair of cranks preferably points in one direction, and the second pair of cranks points in a second direction, which is offset in the order of 180° to the first crank. The third crank again preferably points in the direction of the first crank. In this way, three circuit breakers can be operated by a common crankshaft and a common drive. It is also possible to move the circuit breakers closer to one another due to the offset design of the cranks, since they are arranged offset, which results in a roughly triangular arrangement of the circuit breakers. In this way, a great deal of installation space can be saved when accommodating the circuit breakers.

Weitere Ausgestaltungsformen der Erfindung und weitere Merkmale werden anhand der folgenden Figuren näher erläutert. Dabei handelt es sich um rein exemplarische, sehr schematische Darstellung, die das Grundprinzip der Ausgestaltung näher erläutern sollen. Dies sind schematische Darstellungen, die keine Einschränkung des Schutzbereichs darstellen.Further embodiments of the invention and further features are explained in more detail with reference to the following figures. These are purely exemplary, very schematic representations that are intended to explain the basic principle of the design in more detail. These are schematic representations that do not represent any limitation of the scope of protection.

Dabei zeigen:

Figur 1
ein Hochspannungs-Leistungsschaltersystem mit einem Kontaktsystem und einem Antriebssystem, wobei zur Übertragung der Antriebsenergie auf das Kontaktsystem eine Kurbelwelle Anwendung findet. Figur 1 zeigt das Kontaktsystem im geschlossenen Zustand,
Figur 2
Hochspannungs-Leistungsschaltersystem aus Figur 1 mit gedrehter Kurbelwelle und geöffnetem Zustand des Kontaktsystems,
Figur 3
das Hochspannungs-Leistungsschaltersystem gemäß Figur 1 wieder im geschlossenen Zustand nach einer Drehung der Kurbelwelle von ca. 180°,
Figur 4
das Hochspannungs-Leistungsschaltersystem in der gleichen Position wie in Figur 2 nach einer Drehung von 360° der Kurbelwelle,
Figur 5
eine Reihe von Hochspannungs-Leistungsschaltersystemen für drei Phasen, die durch ein Antriebssystem mit einem Antrieb und einer Kurbelwelle angetrieben werden,
Figur 6
ein Hochspannungs-Leistungsschaltersystem mit einer Kurbelwelle, die eine Exzenterscheibe als Kurbel aufweist,
Figur 7
eine Zeitachse zur Veranschaulichung des Öffnungs- und Schließzyklus,
Figur 8
einen Querschnitt durch eine Kurbelwelle entlang einer Kurbel und eine daran angebrachte Schubstange,
Figur 9
eine Draufsicht auf eine Anordnung von drei Hochspannungs-Leistungsschaltersystem, analog zu Figur 5 mit jedoch bezüglich der Drehachse rotatorisch versetzt angeordneten Kurbeln,
Figur 10
einen Hochspannungs-Leistungsschaltersystem mit einer Antriebsmechanik nach dem Stand der Technik.
show:
figure 1
a high-voltage circuit breaker system with a contact system and a drive system, a crankshaft being used to transmit the drive energy to the contact system. figure 1 shows the contact system in the closed state,
figure 2
High-voltage circuit breaker system from Figure 1 with rotated crankshaft and open state of the contact system,
figure 3
the high voltage circuit breaker system according to figure 1 again in the closed state after a rotation of the crankshaft of approx. 180°,
figure 4
the high voltage circuit breaker system in the same position as in figure 2 after a rotation of 360° of the crankshaft,
figure 5
a series of three phase high voltage circuit breaker systems driven by a drive system having an opener and a crankshaft,
figure 6
a high voltage circuit breaker system with a crankshaft having an eccentric disc as a crank,
figure 7
a timeline to illustrate the opening and closing cycle,
figure 8
a cross section through a crankshaft along a crank and a push rod attached to it,
figure 9
a plan view of an arrangement of three high-voltage circuit breaker system, analogous to figure 5 but with cranks that are rotationally offset with respect to the axis of rotation,
figure 10
disclose a high voltage circuit breaker system with a prior art operating mechanism.

In Figur 1 ist eine schematische Darstellung eines Hochspannungs-Leistungsschaltersystems gegeben, der ein Kontaktsystem 4 aufweist, das in einem Gehäuse 42 angeordnet ist. Das Gehäuse 42 ist dabei grundsätzlich gasdicht ausgestaltet, es kann innerhalb des Gehäuses ein Isoliergas vorliegen, das beispielsweise Schwefelhexafluorid oder ein Fluorketon bzw. ein Fluornitril sein kann. Das Isoliergas kann jedoch auch synthetische, gereinigte Luft sein. Der Leistungsschalter 2 kann dabei auch eine Vakuumröhre umfassen. Das Kontaktsystem 4 weist dabei einen Festkontakt 44 und einen Bewegkontakt 14 auf. Der Bewegkontakt 14 ist mit einem Kontaktbolzen 40 verbunden, der wiederum mechanisch über eine Schubstange 12 mit einer Kurbelwelle 10 in Verbindung steht. Die Schubstange 12 kann beispielsweise in Form eines herkömmlichen Pleuels ausgestaltet sein. Dabei weist die Schubstange 12 in dieser Ausgestaltung an ihren Enden jeweils ein Gleitlager 38 bzw. 40 auf, wobei das Gleitlager 38 an einem Zapfen 34 befestigt ist, der Teil der Kurbelwelle 10 ist. Der Zapfen 34 wird durch zwei Kurbeln 32 eingerahmt, die die exzentrische Anordnung des Zapfens 34 von einer Drehachse 30 der Kurbelwelle 10 bewirken. Die Kurbelwelle 10 wiederum ist Teil eines Antriebssystems 6, das neben der Kurbelwelle 10 eine Antriebseinheit 8 umfasst. Bei der Antriebseinheit 8 können verschiedene Antriebstechniken zum Einsatz kommen. Beispielsweise kann ein Elektromotor den Antrieb gewährleisten, es können jedoch auch Spiralfedern eingesetzt werden. Die Kurbelwelle 10 ist dabei in Lagern 48 gelagert.In figure 1 1 is a schematic representation of a high voltage circuit breaker system having a contact system 4 arranged in a housing 42. FIG. The housing 42 is basically designed to be gas-tight; an insulating gas can be present inside the housing, which can be, for example, sulfur hexafluoride or a fluoroketone or a fluoronitrile. However, the insulating gas can also be synthetic, cleaned air. The circuit breaker 2 can also include a vacuum tube. The contact system 4 has a fixed contact 44 and a moving contact 14 . The moving contact 14 is connected to a contact bolt 40 which in turn is mechanically connected to a crankshaft 10 via a connecting rod 12 . The push rod 12 can be designed, for example, in the form of a conventional connecting rod. In this embodiment, the connecting rod 12 has a sliding bearing 38 or 40 at each of its ends, with the sliding bearing 38 being fastened to a pin 34 which is part of the crankshaft 10 . The journal 34 is framed by two cranks 32 which bring about the eccentric arrangement of the journal 34 from an axis of rotation 30 of the crankshaft 10 . The crankshaft 10 in turn is part of a drive system 6 which includes a drive unit 8 in addition to the crankshaft 10 . Various drive technologies can be used for the drive unit 8 . For example, an electric motor can ensure the drive, but spiral springs can also be used. The crankshaft 10 is supported in bearings 48 .

Das Antriebsaggregat 8 ist dabei so ausgestaltet, dass es sich in eine Drehrichtung 16 bewegt, sodass ebenfalls die Kurbelwelle 10 eine unidirektionale Drehbewegung entlang des Pfeiles 16 vollzieht. Wenn sich diese Drehbewegung 16 um die Drehachse 30 der Kurbelwelle 10 einmal um 360° vollzieht, führt das, wie in den Figuren 2, 3 und 4 dargestellt ist, zunächst zu einer Öffnungsbewegung entlang des Pfeiles 20 gemäß Figur 2, wobei für die maximale Öffnungsweite des Kontaktsystems 4 also die maximale Bewegung des Bewegkontaktes 4 eine 180°-Drehbewegung der Kurbelwelle 10 entlang der Drehrichtung 16 erfolgt. In diesem Fall gemäß Figur 2 ist das Kontaktsystem 4 maximal geöffnet und es erfolgt eine weitere Drehbewegung der Kurbelwelle 10, bevorzugt ohne Unterbrechung, in dieselbe Richtung, wobei sich das Kontaktsystem 4 entlang des Pfeiles 22 wieder schließt, in diesem Fall hat die Kurbelwelle 10 eine Drehbewegung von 360° vollzogen.The drive unit 8 is designed in such a way that it moves in a direction of rotation 16 so that the crankshaft 10 also performs a unidirectional rotary movement along the arrow 16 . If this rotary movement 16 about the axis of rotation 30 of the crankshaft 10 takes place once by 360°, this leads to the results as shown in FIGS figures 2 , 3 and 4 is shown, first to an opening movement along the arrow 20 according to figure 2 , wherein for the maximum opening width of the contact system 4, ie the maximum movement of the moving contact 4, a 180° rotary movement of the crankshaft 10 along the direction of rotation 16 takes place. In this case according to figure 2 the contact system 4 is opened to the maximum and a further rotational movement of the crankshaft 10 takes place, preferably without interruption, in the same direction, with the contact system 4 closing again along the arrow 22; in this case, the crankshaft 10 has completed a rotational movement of 360°.

Sollte sich hierbei herausgestellt haben, dass die Ursache für den Kurzschluss weiterhin besteht, so gibt eine hier nicht dargestellte Auslöseeinheit das Signal für eine weitere 180°-Bewegung der Kurbelwelle 10, was gemäß Figur 4 entlang des Pfeiles 24 eine weitere Öffnungsbewegung bedeutet. An dieser Stelle gemäß Figur 4 ist der Zyklus, der einen Öffnungs-, Schließ- und erneuten Öffnungsvorgang beinhaltet, beendet. Der Hochspannungs-Leistungsschalter 2 bleibt an dieser Stelle zunächst geöffnet.If it turns out that the cause of the short circuit still exists, a tripping unit (not shown here) gives the signal for a further 180° movement of the crankshaft 10, as per FIG figure 4 along the arrow 24 means a further opening movement. At this point according to figure 4 the cycle, which includes an opening, closing and reopening process, is completed. The high-voltage circuit breaker 2 initially remains open at this point.

In Figur 7 ist dieser Zyklus entlang einer Zeitachse schematisch veranschaulicht. Zum Zeitraum vor und zum Zeitpunkt T0 liegt kein Kurzschluss bzw. eine anderweitige Bestätigung des Netzes vor, sodass der Hochspannungs-Leistungsschalter 2 in seiner Grundstellung geschlossen vorliegt.In figure 7 this cycle is illustrated schematically along a time axis. At the time before and at time T 0 there is no short circuit or any other confirmation of the network, so that the high-voltage circuit breaker 2 is closed in its basic position.

Zum Zeitpunkt T0 kommt es zu einem Auslöseereignis, das durch eine Auslöseeinheit hervorgerufen wird, und der Leistungsschalter 2 wird entsprechend der Figur 2 bis zum Zeitpunkt T1 in eine offene Position, die mit O gekennzeichnet ist, geführt. Dieser Zeitabschnitt dauert in etwa 300 Millisekunden.At time T 0 there is a tripping event, which is caused by a trip unit, and the circuit breaker 2 is according to the figure 2 to an open position labeled O by time T 1 . This period lasts approximately 300 milliseconds.

Für einen weiteren Zeitraum, der zwischen 100 Millisekunden und einer Sekunde liegen kann, wird der Schalter wieder gemäß Figur 3 geschlossen, dies liegt zum Zeitpunkt T2 vor. Sollte das kurzschlussverursachende Ereignis weiter vorliegen, kommt es zu einer weiteren Öffnungsbewegung bis zum Zeitpunkt T3, gemäß Figur 4.For a further period of time, which can be between 100 milliseconds and one second, the switch is switched back to normal figure 3 closed, this is present at time T 2 . If the event causing the short circuit is still present, there is a further opening movement up to time T 3 , according to FIG figure 4 .

In Figur 5 ist eine Leistungsschaltersystem 2 dargestellt, in der drei Leistungsschalter 3 nebeneinander angeordnet sind und durch eine Antriebssystem 6 gemeinsam angetrieben werden. Die Kurbelwelle 10 gemäß Figur 5 weist dabei drei Kurbeln 32 auf, die jeweils mit einem Leistungsschalter 3 in Verbindung stehen.In figure 5 a circuit breaker system 2 is shown in which three circuit breakers 3 are arranged next to one another and are jointly driven by a drive system 6 . The crankshaft 10 according to figure 5 has three cranks 32 which are each connected to a circuit breaker 3 .

Bei den drei Leistungsschaltern 3 handelt es sich um Schalter für die einzelnen Phasen eines Stromnetzes, durch die in dem Leistungsschaltersystem 2 mit einem Antriebssystem 6 gleichzeitig geschaltet werden können. Die Abläufe der Drehbewegung entlang des Pfeiles 16 entsprechen dem, was bezüglich der Figuren 1 bis 4 beschrieben ist.The three circuit breakers 3 are switches for the individual phases of a power grid, which can be used to switch in the circuit breaker system 2 with a drive system 6 at the same time. The processes of the rotary movement along the arrow 16 correspond to what is described with reference to FIGS.

In Figur 6 ist ein analoges Leistungsschaltersystem 2 dargestellt, das grundsätzlich die gleichen Bewegungsabläufe vollzieht, wie dies bereits bezüglich der Figuren 1 bis 4 beschrieben ist. Das System 2 unterscheidet sich jedoch in der Form der Kurbelwelle 10, wobei die Kurbel 32 der Kurbelwelle 10 in Form einer Exzenterscheibe ausgestaltet ist und an einem Ende der Kurbelwelle 10 angeordnet ist. In diesem Fall wird nur eine Kurbel 32 und kein Kurbelpaar benötigt, der Kurbelzapfen 34 ist an der Kurbel 32 in Form einer Exzenterscheibe ohne Gegenlagerung in einer zweiten Kurbel angeordnet.In figure 6 an analog circuit breaker system 2 is shown, which basically carries out the same movement sequences as is already the case with regard to the Figures 1 to 4 is described. However, the system 2 differs in the shape of the crankshaft 10, the crank 32 of the crankshaft 10 being designed in the form of an eccentric disk and being arranged at one end of the crankshaft 10. In this case, only one crank 32 and no pair of cranks is required, the crank pin 34 is arranged on the crank 32 in the form of an eccentric disc without a counter bearing in a second crank.

In Figur 8 ist ein Querschnitt durch eine Kurbelwelle 10 im Bereich des Kurbelzapfen 34 zwischen zwei Kurbeln 32 dargestellt. Dabei ist gezeigt, wie das Gleitlager 38, das wiederum mit einer Schubstange 12 verbunden ist, um den Kurbelzapfen 34 herum angeordnet ist. Es ist in Figur 8 auch ersichtlich, wie der Kurbelzapfen 34 exzentrisch zur Drehachse 30 eine Drehbewegung 36 beschreibt und dabei unidirektional eine Drehung um zunächst 360° zum Öffnen und Schließen und anschließend ggf. um weitere 180° vollziehen kann. Das Ende der Schubstange 12, das mit einem weiteren Gleitlager (siehe Figur 1 Bezugszeichen 46) versehen ist, liegt im Eingriff mit dem Kontaktbolzen 40, was hier nicht näher dargestellt ist.In figure 8 a cross section through a crankshaft 10 in the area of the crank pin 34 between two cranks 32 is shown. It is shown how the slide bearing 38, which in turn is connected to a push rod 12, is arranged around the crank pin 34. It is in figure 8 also evident how the crank pin 34 describes a rotational movement 36 eccentrically to the axis of rotation 30 and can complete a unidirectional rotation of initially 360° for opening and closing and then, if necessary, by a further 180°. The end of the push rod 12, which is provided with a further slide bearing (see FIG. 1, reference number 46), is in engagement with the contact pin 40, which is not shown in detail here.

In Figur 10 ist schließlich eine Darstellung eines Antriebsmechanismus eines Hochspannungs-Leistungsschaltersystems gemäß des Standes der Technik gegeben. Die Merkmale, die dieselben Benennungen wie in den vorausgehenden Figuren aufweisen, werden mit demselben Bezugszeichen und einem dahinter folgenden Strich versehen. Auch ein derartiges Leistungsschaltersystem weist ein Kontaktsystem 4' auf, das einen Festkontakt 44` sowie einen Bewegkontakt 14' umfasst, der wiederum mit einem Kontaktbolzen 40' in Wirkverbindung steht. Das Kontaktsystem 4' ist von einem Gehäuse 42' umgeben. Der Unterschied zu der vorangegangenen Beschreibung besteht darin, dass der Zyklus Öffnen-Schließen und erneutes Öffnen, der durch die Pfeile 20`, 22' veranschaulicht ist, durch einen komplexen Federmechanismus ausgestaltet ist, wobei zwei Federspeicher 50-I und 50-II über eine Kipphebel 52 verbunden sind, was hier sehr schematisch dargestellt ist. Der Kipphebel 52 bewirkt, dass beim Öffnen des Kontaktsystems 4' ein Federspeicher 50-I entspannt wird und dabei im Gegenzug der Federspeicher 50-II gespannt wird. Dieser Vorgang kehrt sich bei einer weiteren Öffnungs- bzw. Schließbewegung um. Hierbei handelt es sich um eine ausgesprochen komplexe mechanische Anordnung, die durch die technisch einfachere Ausgestaltungsform der beschriebenen Kurbelwelle 10 alternativ umgesetzt werden kann.In figure 10 Finally, an illustration of a drive mechanism of a high voltage circuit breaker system according to the prior art is given. The features that have the same designations as in the previous figures are provided with the same reference number followed by a prime. Such a circuit breaker system also has a contact system 4', which includes a fixed contact 44' and a moving contact 14', which in turn is operatively connected to a contact pin 40'. The contact system 4' is surrounded by a housing 42'. The difference from the previous description is that the cycle opening-closing and reopening, which is illustrated by the arrows 20', 22', is designed by a complex spring mechanism, with two spring accumulators 50-I and 50-II via a Rocker arms 52 are connected, which is shown here very schematically. The rocker arm 52 has the effect that when the contact system 4' is opened, a spring-loaded accumulator 50-I is relieved and, in return, the spring-loaded accumulator 50-II is tensioned. This process is reversed with a further opening or closing movement. This is an extremely complex mechanical arrangement that can be implemented alternatively by the technically simpler embodiment of the crankshaft 10 described.

BezugszeichenlisteReference List

22
Hochspannungs-LeistungsschaltersystemHigh Voltage Circuit Breaker System
33
Leistungsschaltercircuit breaker
44
Kontaktsystemcontact system
66
Antriebssystemdrive system
88th
Antriebsaggregatdrive unit
1010
Kurbelwellecrankshaft
1212
Schubstangepush rod
1414
Bewegkontaktmoving contact
1616
unidirektionale Drehbewegungunidirectional rotary motion
2020
ÖffnenOpen
2222
SchließenClose
2424
Erneutes ÖffnenReopen
2626
Schließpositionclosed position
2828
Öffnungspositionopening position
3030
Drehachseaxis of rotation
3232
Kurbelcrank
3434
Befestigungszapfenmounting pin
3636
kreisförmige Drehbewegungcircular rotation
3838
Gleitlagerbearings
4040
Kontaktbolzencontact studs
4242
GehäuseHousing
4444
Festkontaktfixed contact
4646
zweites Gleitlagersecond plain bearing
4848
Kurbelwellenlagercrankshaft bearings
5050
Federspeicherspring accumulator
5252
Kipphebelrocker arm

Claims (6)

  1. High-voltage circuit breaker system with a short-circuiting function that results in an opening movement (20), closing movement (22) and another opening movement (24) of a contact system (4), comprising a circuit breaker with a contact system (4) and a drive system (6) that is connected mechanically to the contact system (4), wherein the drive system (6) comprises a drive unit (8), and the drive system, in addition to the drive unit (8), has a driveshaft that is designed as a crankshaft (10) that is connected to a moving contact (14) of the contact system (4) via a push rod (12), and wherein the cycle of opening movement (20), closing movement (22) and another opening movement (24) of the contact system (4) results from a unidirectional rotational movement (16) of the crankshaft (10), wherein the crankshaft (10) has at least three cranks, characterized in that a second crank is deflected rotationally in a different direction than a first crank.
  2. High-voltage circuit breaker system according to Claim 1, characterized in that the crankshaft (10) performs a unidirectional rotational movement (16) in relation to its axis of rotation (30) of between 150° and 210° from a closing position (26) of the contact system (14) to an opening position (28) of the contact system.
  3. High-voltage circuit breaker system according to Claim 1 or 2, characterized in that the crankshaft (10) performs a unidirectional rotational movement (16) in relation to its axis of rotation (30) of between 350° and 360° + 10° for an opening movement (20) and closing movement (22) of the contact system (4).
  4. High-voltage circuit breaker system according to one of the preceding claims, characterized in that the crankshaft (10) has a crankpin (32) that is eccentric in relation to the axis of rotation (30) on a crank (32), which crankpin describes a circular movement about the axis of rotation during the rotational movement (16) of the crankshaft.
  5. High-voltage circuit breaker system according to Claim 4, characterized in that the crankpin (34) is oriented parallel to the axis of rotation (30).
  6. High-voltage circuit breaker system according to Claim 5, characterized in that the crankpin (34) is encompassed by a sliding bearing (38) of the pushrod (38).
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DE102019204441.7A DE102019204441A1 (en) 2019-03-29 2019-03-29 High voltage circuit breaker system
PCT/EP2020/054044 WO2020200566A1 (en) 2019-03-29 2020-02-17 High-voltage circuit breaker system

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DE102019204441A1 (en) 2019-03-29 2020-10-01 Siemens Aktiengesellschaft High voltage circuit breaker system
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US12014890B2 (en) 2024-06-18
US20220189722A1 (en) 2022-06-16
DE102019204441A1 (en) 2020-10-01
CN113748475B (en) 2024-03-08
CN113748475A (en) 2021-12-03
WO2020200566A1 (en) 2020-10-08
EP3928339A1 (en) 2021-12-29

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