EP3963616A1 - Ensemble commutateur et procédé pour faire fonctionner un ensemble commutateur de manière sûre - Google Patents

Ensemble commutateur et procédé pour faire fonctionner un ensemble commutateur de manière sûre

Info

Publication number
EP3963616A1
EP3963616A1 EP20721216.8A EP20721216A EP3963616A1 EP 3963616 A1 EP3963616 A1 EP 3963616A1 EP 20721216 A EP20721216 A EP 20721216A EP 3963616 A1 EP3963616 A1 EP 3963616A1
Authority
EP
European Patent Office
Prior art keywords
switch
protective circuit
unit
safety measure
arrangement according
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.)
Pending
Application number
EP20721216.8A
Other languages
German (de)
English (en)
Inventor
Eduard ZERR
Klaus IXMEIER
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3963616A1 publication Critical patent/EP3963616A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • 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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • 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
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H2003/266—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H2009/0061—Monitoring tap change switching devices

Definitions

  • the invention relates to a switch arrangement with a switch and a drive system for the switch, an electrical operating means with a switch arrangement and a method for the safe operation of a switch arrangement.
  • switches for different tasks and with different requirements. To operate the respective switches, they must be driven by a drive system. These switches are, among other things, on-load tap-changers, diverter switches, selector switches, double-turners, reversers, preselectors, circuit-breakers, load switches or disconnectors.
  • On-load tap-changers are used, for example, for uninterrupted switching between different winding taps in electrical equipment, such as a power transformer or a controllable choke. In this way, for example, the transformation ratio of the transformer or the inductance of the choke can be changed. Double turners are used to reverse the polarity of windings while the power transformer is in operation.
  • the improved concept is based on the idea of detecting faults in a control unit, a motor and a power unit for driving a switch with a protective circuit and, if necessary, initiating a safety measure. Motor malfunctions are recorded indirectly via the power unit. In doing so, the protection circuit is in front Initiation of a switching process of the switch activated and deactivated after the switching process has been carried out successfully.
  • a switch arrangement with a switch and a drive system for the switch is specified.
  • the drive system has a motor for driving the switch, a protective circuit and a control device with a power section for supplying energy to the motor.
  • the control device also has a control unit for initiating a switching operation of the switch by controlling the power section.
  • the protective circuit is set up to detect a first error signal via a status contact in the event of a fault in the control unit and to detect a second error signal via a status contact of the power unit in the event of a fault in the power unit or the motor.
  • the protective circuit is set up to initiate a safety measure as a function of the first and the second error signal.
  • the control device in particular the control unit and / or the power section, is set up to activate the protective circuit before the switching process of the switch is initiated and to deactivate it after the switching process has been carried out successfully.
  • the switching process comprises a complete switchover of the switch, in the case of an on-load tap-changer, a complete switchover between two winding taps of an electrical equipment associated with the switch arrangement, such as a power transformer or a choke.
  • the switch of the switch arrangement is an on-load tap-changer or a selector or a preselector or a diverter switch or a turner or a double turner.
  • the switching process comprises part of the switching of the switch.
  • the switching process comprises a complete switchover of an on-load tap-changer, i.e. a complete switchover between two winding taps of an on-load tap-changer associated electrical equipment, such as a power transformer or a choke.
  • the switching process comprises part of the Switching the on-load tap-changer, for example a preselector circuit, a selector circuit or a load switch, or a respective part thereof.
  • the switching process can correspond to a critical part of the switchover, during which a fault in the motor or the power unit can have serious consequences, for example a step short circuit.
  • the protective circuit detects the error signals only in the activated state and / or only initiates the safety measure in the activated state.
  • the protective circuit is formed separately from the power section, the control unit and the motor.
  • parts of the protective circuit are comprised by the power section, the control unit and / or the motor.
  • the initiation of the safety measure comprises the output of a signal at an output of the protective circuit, for example short-circuiting two output contacts.
  • the switch can be assigned to an electrical device or can be installed on or in the electrical device.
  • the safety measure comprises a separation of the equipment from an energy network, for example by operating a circuit breaker. If the circuit breaker is not activated, it connects the equipment to the energy network.
  • the operational safety of the switch arrangement or the equipment can be increased.
  • a safety risk due to errors in movement-relevant components such as motor and power unit during critical switching operations is reduced. This is particularly advantageous for critical switching operations that can no longer or no longer be stopped safely once they have been initiated or for critical switching operations that cannot be stopped, since this would result in an impermissible state of the switch.
  • the contactor circuit is not activated, for example if the switch is in a safe or non-critical position or in a safe or non-critical state, the safety measure is not initiated, in particular the equipment is not disconnected from the energy network. The availability of the equipment is therefore guaranteed despite increased security.
  • the protective circuit is set up to initiate the safety measure only when the first error signal indicates a malfunction of the power unit (or the motor) and the second error signal indicates a malfunction of the control unit. It cannot be ruled out that further conditions must be met for the safety measure to be initiated.
  • the safety measure is only initiated if several, for example all, components of the switch arrangement fail or fail.
  • the switch arrangement is set up to respond to a malfunction or failure of a movement-relevant component by initiating a further safety measure.
  • the initiation of further safety measures can depend on specific conditions, such as a position of the switch.
  • the protective circuit is initially not necessarily relevant here. Only when several, in particular all, components indicate malfunctions, the protective circuit, if activated, initiates the safety measure.
  • the switch in particular on-load tap changer, comprises a storage device for storing mechanical energy, for example a spring energy storage device.
  • the storage device can be charged by the drive system via a drive shaft and, when the drive shaft reaches a certain position, can suddenly release the stored energy so that the load switch can take place within a very short time. This ensures that an initiated load transfer is always completed.
  • the drive system can be designed as a servo drive system, but this is not absolutely necessary.
  • the switching process can include a preselector circuit, for example.
  • the switch is designed as a directly driven on-load tap changer.
  • the drive system is designed as a servo drive system.
  • other suitable means for example the drive system, must be used to ensure that, for example, the load switchover is completed once it has been initiated.
  • the switching process includes load switching.
  • control unit is set up to activate the protective circuit before initiating the switching process and / or to deactivate it after the switching process has been carried out successfully.
  • the power unit is set up to activate the protective circuit before the switching process is initiated and / or to deactivate it after the switching process has been carried out successfully.
  • control unit is set up to activate the protective circuit before initiating the switching process and to deactivate the power unit after the switching process has been carried out successfully.
  • the power unit is set up to activate the protective circuit before initiating the switching process and to deactivate the control unit after the switching process has been carried out successfully.
  • the protective circuit has a bistable switching element, in particular a bistable relay.
  • the control device in particular the control unit, is set up to actuate the bistable switching element in order to activate and / or deactivate the protective circuit.
  • the control device in particular the power unit, is set up to actuate the bistable switching element in order to activate and / or deactivate the protective circuit.
  • the protective circuit has a series circuit which is connected to a first switch unit, a second switch unit and the bistable switching element.
  • the first switch unit is coupled to the status contact of the power section
  • the second switch unit is coupled to the status contact of the control unit.
  • the first switch unit has one or more switches connected in parallel, at least one of which must be closed, so that the protection circuit can initiate the safety measure.
  • the second switch unit has one or more switches connected in parallel, at least one of which must be closed so that the protective circuit can initiate the safety measure.
  • the first switch unit has one or more switches connected in parallel, each of which can be closed by a single power unit.
  • the drive system is designed as a servo drive system.
  • the power section comprises one or more converters, in particular servo converters, equivalent electronic, in particular fully electronic, units for drive machines.
  • the power unit comprises one converter per driven axle.
  • the on-load tap-changer is configured in a multi-phase manner, in particular for a multi-phase device.
  • the power unit has one converter per phase.
  • the power unit is designed as an electromechanical unit for drive machines.
  • the switch arrangement has a further movement-relevant component, in particular a further motor or a further power unit.
  • the protective circuit has a further switch unit which is connected in series with the first and second switch unit and is coupled to a status contact of the further movement-relevant component.
  • the further switch unit has one or more switches connected in parallel, at least one of which must be closed so that the protective circuit can initiate the safety measure.
  • an electrical operating means which comprises a switch arrangement according to the improved concept, for example a step switch arrangement.
  • the on-load tap changer of the tap changer arrangement is assigned to the electrical equipment or is installed on or in the electrical equipment.
  • the safety measure includes a separation of the equipment from an energy network.
  • the equipment arrangement comprises an electrical equipment according to the improved concept as well as a circuit breaker for separating the equipment from the energy network, the safety measure including an actuation of the circuit breaker.
  • a method for the safe operation of a switch arrangement comprises activating a protective circuit, initiating a switching process of the switch by activating the power section after the protective circuit has been activated, detecting a first error signal via a status contact of a motor of the drive system, detecting a second error signal via a status contact of a power unit of the drive system, initiating a safety measure as a function of the first and the second error signal and deactivating the protective circuit after the switching process has been carried out successfully.
  • a method for the safe operation of a tap changer arrangement comprises activating a protective circuit, initiating a switching process of the on-load tap-changer by activating the power section after the protective circuit has been activated, detecting a first error signal via a status contact of a motor of the drive system, detecting a second error signal via a status contact of a power unit of the drive system, initiating a safety measure as a function of the first and the second error signal and deactivating the protective circuit after the switching process has been carried out successfully.
  • Figure 1 is a schematic representation of an exemplary embodiment of a
  • FIG. 2 shows a schematic representation of a protection circuit of an exemplary embodiment of a switch arrangement according to the improved concept
  • FIG. 3 shows a schematic representation of a protective circuit of a further exemplary embodiment of a switch arrangement according to the improved concept.
  • FIG. 1 shows a schematic representation of an exemplary embodiment of a switch arrangement 2 according to the improved concept with a switch 17 and a drive system which is connected to the switch 17 via a drive shaft 16.
  • the drive system includes a motor 12 which can drive the drive shaft 16 via a motor shaft 13 and optionally via a gear 15.
  • a control device 1 of the servo drive system comprises a power section 11, which contains, for example, one or more converters, for the controlled or regulated supply of energy to the motor 12, as well as a control unit 10 for controlling the power section 1 1, for example via a bus 18.
  • the switch arrangement 2 can be connected to electrical equipment 19, for example a power transformer, or be installed in or on the operating means 19.
  • the switch arrangement can be designed to be single-phase or multi-phase.
  • the power unit 11 can contain a respective converter for each phase.
  • the switch arrangement also has a protective circuit 14 which is coupled to a status contact of the motor 12, to one or more status contacts of the power unit 11, in particular the converter of the power unit 11, and the control unit 10.
  • the switch arrangement 2, in particular the protective circuit 14, can, for example, be connected to a disconnection device 20, in particular a power switch or circuit breaker, which can disconnect the operating means 19 from an energy network 21.
  • the control unit 10 When the switch arrangement 2 is in operation, the control unit 10 initiates a switching operation of the switch 17, for example a switchover between two winding taps of the operating means 19 or part of the switchover.
  • the control unit 10 can, in particular if the switching process is a critical process, such as a load changeover or a preselector actuation of the switch 17, activate the protective circuit 14 before the switching process is initiated.
  • control device for example the power unit 11, can deactivate the protective circuit 14.
  • the protective circuit 14 recognizes this via respective error signals the status contacts or the respective error signals trigger the status contacts of the protective circuit and initiate a safety measure.
  • the protective circuit 14 can, for example, output an output signal which can lead to the actuation of the isolating device 20, for example by short-circuiting two output contacts of the protective circuit 14.
  • the protective circuit 14 does not initiate the safety measure.
  • the control unit 10 can initiate a safety measure as a function of a state or a position of the switch 17, for example actively triggering the isolating device 20.
  • the deactivation of the protective circuit 14 can then be omitted, for example.
  • FIG. 2 shows a schematic representation of a protective circuit 14 of an exemplary embodiment of a switch arrangement according to the improved concept, in particular as described with respect to FIG.
  • the protective circuit 14 contains a series connection of a bistable switching element 22, for example a bistable relay, a first switch unit 23, a second switch unit 24 and an output element 28, which can be implemented as a switch or relay, for example.
  • the series circuit is arranged between a supply voltage 29 and a reference voltage.
  • the bistable switching element 22 can be actuated by the control device 1. Before initiating the switching process, the control unit 10 can actuate the bistable switching element 22 in order to connect the series circuit to the supply voltage 29 and thus activate the protective circuit 14. Before the start of the switching process, both the first switch unit 23 and the second switch unit 24 are open.
  • the first switch unit 23 is closed. If, when the protective circuit 14 is activated, a fault occurs in the power section 11, in particular all of the converters in the power section 11, or in the motor 12, the second switch unit 24 is closed. If both switch units 23, 24 are closed, the output element 28 is connected to the supply voltage 29 and emits an output signal to initiate the safety measure, for example to the isolating device 20 in order to operate it.
  • the power section 11 can actuate the bistable switching element 22 to separate the series connection from the supply voltage 29 and thus deactivate the protective circuit 14.
  • FIG. 3 shows a schematic representation of a protective circuit 14 of a further exemplary embodiment of a switch arrangement according to the improved concept, in particular as described with respect to FIG.
  • the second switch unit 24 here has a plurality of switches 25, 26, 27 connected in parallel, each of which is assigned to a respective converter of the power section 11.
  • parallel switches 25, 26, 27 are shown in FIG. 3, each of which is assigned to one of three converters of the power section 11.
  • Each of the switches 25, 26, 27 is closed by the power unit 11 or the associated converter or motor if a fault or an error in the corresponding converter occurs during the switching process. As a result of the parallel connection, closing one of the switches 25, 26, 27 corresponds to closing the first switch unit 24.
  • the protective circuit 14 is constructed like that described with respect to FIG. Reference is therefore made to the relevant explanations.
  • the improved concept increases the operational reliability of the tap changer arrangement and resources increased.
  • the functionality of the protective circuit ensures that the system operates reliably and reliably, even if all components fail during a switching process.
  • This safety circuit is also characterized by the fact that it can be checked cyclically without a circuit breaker being triggered. In a safe position, i.e. with the protective circuit deactivated, a failure of all components has no effect on the circuit breaker tripping, which guarantees availability.

Landscapes

  • Keying Circuit Devices (AREA)
  • Control Of Ac Motors In General (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

L'invention concerne un ensemble commutateur comprenant un commutateur (17) et un système d'entraînement pour ce commutateur (17), ledit système d'entraînement (2) comprenant un moteur (12) pour entraîner le commutateur (17) ; un dispositif de commande (1) comportant un élément de puissance (11) pour alimenter le moteur (12) en énergie ainsi qu'une unité de commande (10) pour déclencher un processus de commutation du commutateur (17) par commande de l'élément de puissance (11) ; et un circuit de protection (14), conçu de manière qu'en cas de dérangement de l'unité de commande (10), il détecte un premier signal d'erreur, par l'intermédiaire d'un contact d'état de l'unité de commande (10) ; et qu'en cas de dérangement de l'élément de puissance (11), il détecte un deuxième signal d'erreur, par l'intermédiaire d'un contact d'état de l'élément de puissance (11) ; et induit une mesure de sécurité en fonction du premier et du deuxième signal d'erreur ; le dispositif de puissance (1) étant conçu pour activer le circuit de protection (14) avant le déclenchement du processus de commutation et pour le désactiver après un déroulement réussi du processus de commutation.
EP20721216.8A 2019-05-15 2020-04-23 Ensemble commutateur et procédé pour faire fonctionner un ensemble commutateur de manière sûre Pending EP3963616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019112713.0A DE102019112713A1 (de) 2019-05-15 2019-05-15 Schalteranordnung und verfahren zum sicheren betrieb einer schalteranordnung
PCT/EP2020/061291 WO2020229128A1 (fr) 2019-05-15 2020-04-23 Ensemble commutateur et procédé pour faire fonctionner un ensemble commutateur de manière sûre

Publications (1)

Publication Number Publication Date
EP3963616A1 true EP3963616A1 (fr) 2022-03-09

Family

ID=70456783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20721216.8A Pending EP3963616A1 (fr) 2019-05-15 2020-04-23 Ensemble commutateur et procédé pour faire fonctionner un ensemble commutateur de manière sûre

Country Status (6)

Country Link
US (1) US20220254580A1 (fr)
EP (1) EP3963616A1 (fr)
CN (1) CN114127877A (fr)
BR (1) BR112021021932A2 (fr)
DE (1) DE102019112713A1 (fr)
WO (1) WO2020229128A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239012B (de) * 1965-08-07 1967-04-20 Siemens Ag Schutzeinrichtung fuer Stufenschalter von Stufentransformatoren
DE4009038A1 (de) * 1990-03-21 1991-09-26 Reinhausen Maschf Scheubeck Verfahren und anordnung fuer ein ueberwachungssystem fuer stufenschalter von stufentransformatoren
DE10045651B4 (de) * 2000-09-15 2007-08-02 Pilz Gmbh & Co. Kg Sicherheitsschaltgerät
SE0003304D0 (sv) * 2000-09-18 2000-09-18 Abb Ab Förfarande samt anordning för tillståndskontroll av en elektrisk kopplare
US7053570B2 (en) * 2003-12-01 2006-05-30 Eaton Corporation Control circuit for a dual directional direct current motor employing a single alternating current power source
US7417411B2 (en) * 2005-09-14 2008-08-26 Advanced Power Technologies, Llc Apparatus and method for monitoring tap positions of load tap changer
FR2931995B1 (fr) * 2008-06-03 2010-05-28 Dauphinoise Const Elect Mec Dispositif de commande d'un moteur de sectionneur electrique
DE102011002685B3 (de) * 2011-01-14 2012-04-19 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Steuern eines Schalterantrieb eines elektrischen Schalters
BR112013024908B1 (pt) * 2011-03-27 2021-02-17 Abb Schweiz Ag comutador de derivação em carga para comutar derivações em um enrolamento de um transformador
DE102016218334B4 (de) * 2016-09-23 2020-03-05 Siemens Aktiengesellschaft Motorvorrichtung für einen Schalterantrieb eines elektrischen Schalters

Also Published As

Publication number Publication date
WO2020229128A8 (fr) 2021-12-30
DE102019112713A1 (de) 2020-11-19
US20220254580A1 (en) 2022-08-11
BR112021021932A2 (pt) 2021-12-21
CN114127877A (zh) 2022-03-01
WO2020229128A1 (fr) 2020-11-19

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