EP2842148B1 - Method for centering of a load tape-changer - Google Patents

Method for centering of a load tape-changer Download PDF

Info

Publication number
EP2842148B1
EP2842148B1 EP13715631.1A EP13715631A EP2842148B1 EP 2842148 B1 EP2842148 B1 EP 2842148B1 EP 13715631 A EP13715631 A EP 13715631A EP 2842148 B1 EP2842148 B1 EP 2842148B1
Authority
EP
European Patent Office
Prior art keywords
control device
load tap
tap changer
changer
motor drive
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
EP13715631.1A
Other languages
German (de)
French (fr)
Other versions
EP2842148A1 (en
Inventor
Alfred Bieringer
Dominik PLITZKO
Sebastian Schmid
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 EP2842148A1 publication Critical patent/EP2842148A1/en
Application granted granted Critical
Publication of EP2842148B1 publication Critical patent/EP2842148B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • 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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H01H9/0033—Operating mechanisms with means for indicating the selected tap or limiting the number of selectable taps
    • 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
    • H01H9/0038—Tap change devices making use of vacuum switches
    • 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 present invention relates to a method for determining an on-load tap-changer for switching between different winding taps of a tapped transformer.
  • On-load tap-changers have been in worldwide use for many years for uninterrupted switching between different winding taps of tapped transformers in large numbers. So-called reactor switches, which are particularly common in North America, have a switching reactance, which allows a slow, continuous switching.
  • On-load tap changers according to the resistance fast-switching principle usually consist of a selector for powerless selection of the respective winding tap of the tapped transformer to be switched to, and a diverter switch for the actual switching from the previous to the new, preselected winding tapping.
  • the diverter switch usually has switching contacts and resistance contacts.
  • the switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, d. H. Bridging by means of one or more switching resistors.
  • a diverter switch carries a drivable by a power storage drive shaft with at least one cam.
  • the cam has a plurality of control cams, wherein two arranged on the cam front control cams have a deviating from a circular contour contour on the type of cam on the contact one each connected via a rocker arm with a vacuum interrupter roller is performed, the profiled contour of the respective control cam taps.
  • the known from the prior art on-load tap-changer are delivered to the customer as finished assembled products and installed by this on-site in an existing tap-changer.
  • an operating instruction is attached by the manufacturer, which documents and describes the installation of the step control device in an easily comprehensible manner.
  • Control electronics requires in individual assembly steps, the manually controlled switching different stages positions of the control winding of the tapped transformer by the stage control device between adjacent, electrically connected to the control coil fixed contacts, is switched. This process is time consuming and sometimes erroneous in the prior art.
  • Position indicator arrangements as part of the motor drive of tap changers o. ⁇ . Serve to electrically detect and transmit the respective position of the tap changer o. ⁇ . This in turn is on the one hand the starting point for the actual position indicator and on the other hand the actual value as the basis for subsequent control or regulation functions.
  • Known position signaling arrangements for tap changer consist of a circular arrangement of a plurality of signaling contacts, wherein at least one each reporting contact an operating position of the tap changer o.
  • the signaling contacts by means of a rotatable central signaling contact lever, which is connected to the tap changer, more specifically with the motor drive of the tap changer, connected.
  • a position detection arrangement is therefore not suitable when using the reporting contacts operated with DC circuits operated or generally higher currents to be switched.
  • the general inventive idea is to achieve a predefined operating position of the on-load tap-changer by activating a motor drive by a parameterized control device in a first direction of rotation after start-up of the on-load tap-changer, so that the on-load tap-changer switches its stationary operating positions, ie the various winding taps of the tapped transformer Direction of the first winding tap begins to run through, by means of the control device, the achievement of the end position of the on-load tap changer is detected, again below the motor drive is activated in a second direction of rotation, so that the Lasgenschalter then the control range in the opposite switching direction until reaching the first stationary Run through operating position, and then followed by a configuration of the first stationary operating position as a predefined operating position using the non-volatile stored parameterization of the control device takes place.
  • the method according to the invention after commissioning of the on-load tap-changer independently defines a first stationary operating position as a reference variable for all subsequent switching operations. Since this defined operating position is stored in a software-supported non-volatile manner, this makes it comprehensible at any later time how much switching has taken place in which switchover direction of the on-load tap-changer and thus ultimately in which steady-state operating position the on-load tap-changer is currently located. In other words, according to the essence of the invention, therefore, the mechanical stop of the control range of the on-load tap-changer is used to subsequently carry out a standardization to a defined stationary operating position of the on-load tap-changer.
  • the control device detects the mechanical end stop of the control range of the on-load tap-changer by non-volatile storage of the current of the motor drive after its activation in a first direction of rotation and is compared at defined intervals with a maximum value parameterized in the control device as current limit. If the currently determined current value exceeds the defined setpoint value, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.
  • the mechanical end stop of the control range of the on-load tap-changer is detected by the control device by means of a sensor at regular intervals detects the rotational speed of the drive shaft of the motor drive. If the determined value of the rotational speed is equal to 0, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.
  • a signaling contact is connected when passing through the control range of the on-load tap-changer in a first direction of rotation at each reaching a next steady-state operating position, wherein the triggering time, d. H. the circuitry of the signaling contact, by means of the control device is stored non-volatile, wherein the time between two trip times is compared with a maximum allowable limit, wherein when exceeding the maximum allowable limit, an electrical signal is generated indicating the control device, the mechanical end stop of the on-load tap changer.
  • This can for example take place in that at least one cam disc is brought into rotary engagement with the drive shaft of the motor drive, which in turn actuates at least one microswitch per revolution of the cam disc.
  • the rotation of the cam can take place synchronously with a changeover of the diverter switch from a first to an adjacent second stationary operating position.
  • the microswitch thus triggers once per revolution of the cam and thus per switch, ie permissible stationary operating position of the on-load tap-changer, and thus signals a successfully completed switching process.
  • the figure shows a schematic flow chart of the method according to the invention.
  • Starting point of the method according to the invention is the commissioning of the on-load tap-changer with a tapped transformer.
  • the on-load tap-changer is connected with its connection contacts to the control winding of the tapped transformer, the motor drive is mounted and the on-load tap-changer, including the motor drive, is connected to a software-supported electronic control device, which in turn can be connected to an output device.
  • the control device is to be parameterized during commissioning, in particular an initial direction of movement of the drive shaft of the motor drive is to be defined, furthermore the number of permissible stationary operating positions of the on-load tap-changer must be specified and finally defined, where the beginning of the control range, i.
  • on-load tap-changers usually have a selector for powerless selection of the respective winding tapping of the tapped transformer to be switched to, and a diverter switch for actually switching from the previous to the new, preselected winding tapping.
  • steady-state operating positions are permissible for a control winding with, for example, 5 winding taps, and stationary operating positions according to the Rekator switching principle 9, since intermediate positions are permissible here as stationary operating positions.
  • a motor drive is activated by the then parameterized control device in a first direction of rotation, so that the on-load tap changer its stationary operating positions, ie the different winding taps of the tapped transformer, in the direction of the first winding tapping begins to go through.
  • the first winding tapping here means the winding winding of the control winding closest to the main winding of the step transformer gate - ie the start of the control range of a tapped transformer.
  • the motor drive is, for example, a stepping motor known from the prior art.
  • the reaching of the end position by means of the control device is detected.
  • end position is understood in the context of the present invention, the mechanical end stop of the on-load tap-changer against which moves the moving part of the on-load tap-changer when he the beginning or the end of his Has reached the control range.
  • the control device recognizing the mechanical end stop of the control range of the on-load tap-changer by nonvolatilely storing the amperage of the motor drive after its activation in a first direction of rotation and comparing it at defined time intervals with a maximum value parameterized in the control device as current limit value.
  • an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.
  • the mechanical end stop of the control range of the on-load tap-changer is detected via the control device by not detecting the rotational speed of the drive shaft of the motor drive by means of a sensor at regular time intervals. If the determined value of the rotational speed is equal to 0, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.
  • a signaling contact is connected when passing through the control range of the on-load tap changer in a first direction of rotation at each reaching a next stationary operating position, wherein the triggering time, ie the wiring of the signaling contact, is stored non-volatile means of the control device, the time between two triggering times is compared with a maximum permissible limit value, wherein when exceeding the maximum permissible limit value, an electrical signal is generated, which indicates the control device, the mechanical end stop of the on-load tap-changer.
  • This can for example take place in that at least one cam disc is brought into rotary engagement with the drive shaft of the motor drive, which in turn actuates at least one microswitch per revolution of the cam disc.
  • the rotation of the cam can take place synchronously with a changeover of the diverter switch from a first to an adjacent second stationary operating position.
  • the microswitch thus triggers once per revolution of the cam and thus per switch, ie permissible stationary operating position of the on-load tap-changer, thus indicating a successfully completed switching process.
  • the motor drive is activated by the control device in a second direction of rotation, so that the selector then passes through the control range in the opposite switching direction until reaching the first stationary operating position and stops when reaching the first stationary operating position.
  • a configuration of the first stationary operating position takes place as a predefined operating position with the aid of the non-volatile parameterization of the control device.
  • this defined operating position is stored in a software-supported non-volatile manner, it is comprehensible at any later time how much switching has taken place in which switching direction of the on-load tap-changer and thus, in the end, in which steady-state operating position the on-load tap-changer is currently located.
  • the mechanical stop of the control range of the on-load tap-changer is used to subsequently carry out a standardization to a defined stationary operating position of the on-load tap-changer.

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Electrical Variables (AREA)
  • Control Of Position Or Direction (AREA)
  • Protection Of Transformers (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Ausmittelung eines Laststufenschalters zur Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators.The present invention relates to a method for determining an on-load tap-changer for switching between different winding taps of a tapped transformer.

Laststufenschalter sind seit vielen Jahren zur unterbrechungslosen Umschaltung zwischen verschiedenen Wicklungsanzapfungen von Stufentransformatoren in großen Zahlen weltweit im Einsatz. Sogenannte Reaktorschalter, die besonders in Nord-Amerika verbreitet sind, besitzen eine Umschaltreaktanz, die eine langsame, kontinuierliche Umschaltung ermöglicht. Laststufenschalter nach dem Widerstandsschnellschalt-Prinzip bestehen üblicherweise aus einem Wähler zur leistungslosen Anwahl der jeweiligen Wicklungsanzapfung des Stufentransformators, auf die umgeschaltet werden soll, und einem Lastumschalter zur eigentlichen Umschaltung von der bisherigen auf die neue, vorgewählte Wicklungsanzapfung. Der Lastumschalter weist dazu üblicherweise Schaltkontakte und Widerstandskontakte auf. Die Schaltkontakte dienen dabei zur direkten Verbindung der jeweiligen Wicklungsanzapfung mit der Lastableitung, die Widerstandskontakte zur kurzzeitigen Beschaltung, d. h. Überbrückung mittels eines oder mehrerer Überschaltwiderstände. Die Entwicklungen der letzten Jahre führten jedoch weg von Lastumschaltern mit mechanischen Schaltkontakten im Isolieröl. Stattdessen werden vermehrt Vakuumschaltzellen als Schaltelemente eingesetzt.On-load tap-changers have been in worldwide use for many years for uninterrupted switching between different winding taps of tapped transformers in large numbers. So-called reactor switches, which are particularly common in North America, have a switching reactance, which allows a slow, continuous switching. On-load tap changers according to the resistance fast-switching principle usually consist of a selector for powerless selection of the respective winding tap of the tapped transformer to be switched to, and a diverter switch for the actual switching from the previous to the new, preselected winding tapping. The diverter switch usually has switching contacts and resistance contacts. The switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, d. H. Bridging by means of one or more switching resistors. The developments of recent years, however, led away from load switches with mechanical switching contacts in insulating oil. Instead, more and more vacuum switching cells are used as switching elements.

Ein derartiger Laststufenschalter mit Vakuumschaltröhren ist beispielsweise aus der WO2004/088693 A1 oder DE 10 2009 043 171 A1 offenbart. Hier trägt ein Lastumschalter eine von einem Kraftspeicher antreibbare Antriebswelle mit mindestens einer Kurvenscheibe. Die Kurvenscheibe weist mehrere Steuerkurven auf, wobei zwei an der Kurvenscheibe stirnseitig angeordnete Steuerkurven eine von einer Kreisform abweichende Kontur nach Art von Nocken aufweisen, an der kontaktschlüssig jeweils eine über einen Kipphebel mit einer Vakuumschaltröhre verbundene Rolle geführt wird, die die profilierte Kontur der jeweiligen Steuerkurve abgreift. Üblicherweise werden die aus dem Stand der Technik bekannten Laststufenschalter dem Kunden als fertig montierte Erzeugnisse ausgeliefert und von diesem vor Ort in einen bestehenden Stufentransformator eingebaut. Hierfür wird von dem Hersteller eine Betriebsanweisung beigefügt, die den Einbau der Stufenregeleinrichtung leicht nachvollziehbar dokumentiert und beschreibt. Die Inbetriebnahme, d.h. das Kuppeln, der Stufenregeleinrichtung samt Motorantrieb mit dem Stufentransformator und dessenSuch on-load tap changer with vacuum interrupters is for example from the WO2004 / 088693 A1 or DE 10 2009 043 171 A1 disclosed. Here, a diverter switch carries a drivable by a power storage drive shaft with at least one cam. The cam has a plurality of control cams, wherein two arranged on the cam front control cams have a deviating from a circular contour contour on the type of cam on the contact one each connected via a rocker arm with a vacuum interrupter roller is performed, the profiled contour of the respective control cam taps. Usually, the known from the prior art on-load tap-changer are delivered to the customer as finished assembled products and installed by this on-site in an existing tap-changer. For this purpose, an operating instruction is attached by the manufacturer, which documents and describes the installation of the step control device in an easily comprehensible manner. The commissioning, ie the coupling, the stage control device including motor drive with the tap-changer and its

Steuerelektronik erfordert in einzelnen Montageschritten das manuell gesteuerte Beschalten verschiedener Stufenpositionen der Regelwicklung des Stufentransformators, indem die Stufenregeleinrichtung zwischen benachbarten, mit der Regelwicklung elektrisch verbundenen Festkontakten, umgeschaltet wird. Dieser Vorgang ist nach dem Stand der Technik zeitaufwändig und mitunter fehlerbehaftet.Control electronics requires in individual assembly steps, the manually controlled switching different stages positions of the control winding of the tapped transformer by the stage control device between adjacent, electrically connected to the control coil fixed contacts, is switched. This process is time consuming and sometimes erroneous in the prior art.

Aus der DE 197 05 576 A1 ist eine Stellungsmeldeanordnung für einen Laststufenschalter bekannt geworden. Stellungsmeldeanordnungen als Bestandteil des Motorantriebes von Stufenschaltern o. ä. dienen dazu, die jeweilige Stellung des Stufenschalters o. ä. elektrisch zu erfassen und zu übermitteln; dies wiederum ist einerseits Ausgangspunkt für die eigentliche Stellungsanzeige und andererseits als Istwert Grundlage nachfolgender Steuer- bzw. Regelfunktionen.From the DE 197 05 576 A1 has become known a position indicator for an on-load tap changer. Position indicator arrangements as part of the motor drive of tap changers o. Ä. Serve to electrically detect and transmit the respective position of the tap changer o. Ä. This in turn is on the one hand the starting point for the actual position indicator and on the other hand the actual value as the basis for subsequent control or regulation functions.

Bekannte Stellungsmeldeanordnungen für Stufenschalter bestehen aus einer kreisförmigen Anordnung einer Vielzahl von Meldekontakten, wobei mindestens je einem Meldekontakt eine Betriebsstellung des Stufenschalters o. dgl. zugeordnet ist. Dabei werden die Meldekontakte mittels eines drehbaren zentralen Meldekontakthebels, der mit dem Stufenschalter, genauer gesagt mit dem Motorantrieb des Stufenschalters, in Verbindung steht, beschaltet. Dabei wird der Meldekontakthebel bei jeder Änderung der Betriebsstellung des Stufenschalters, d. h. bei der Umschaltung von einer Wicklungsanzapfung auf eine andere, lediglich um einen Schaltwinkel bewegt, der dem Abstand zweier benachbarter Meldekontakte entspricht. Infolge der kontinuierlichen Bewegung des Meldekontakthebels kommt es jedoch zu einer sehr langsamen Kontakttrennung, die sich, abhängig vom jeweiligen Schaltvorgang, über mehrere Sekunden erstrecken kann. Eine solche Stellungsmeldeanordnung ist also nicht geeignet, wenn über die Meldekontakte mit Gleichstrom betriebene Stromkreise geführt werden oder ganz allgemein höhere Ströme geschaltet werden sollen.Known position signaling arrangements for tap changer consist of a circular arrangement of a plurality of signaling contacts, wherein at least one each reporting contact an operating position of the tap changer o. The like. Is assigned. In this case, the signaling contacts by means of a rotatable central signaling contact lever, which is connected to the tap changer, more specifically with the motor drive of the tap changer, connected. In this case, the signal contact lever at each change in the operating position of the tap changer, d. H. when switching from one winding tap to another, only by a switching angle moves, which corresponds to the distance between two adjacent signaling contacts. As a result of the continuous movement of the signal contact lever, however, there is a very slow contact separation, which may extend over several seconds, depending on the respective switching operation. Such a position detection arrangement is therefore not suitable when using the reporting contacts operated with DC circuits operated or generally higher currents to be switched.

Bei diesen aus dem Stand der Technik bekannten Stellungsmeldeanordnungen ist also jedem Meldekontakt eine feste Betriebsstellung des Stufenschalters, d. h. Wicklungsanzapfung der Regelwicklung des Stufentransformators, zugeordnet. Auch hier muss die mechanische Kopplung bzw. die Justierung des Stufenschalters mit der Stellungsmeldeanzeige nach einem fest definierten Schaltplan erfolgen, da ansonsten falsche Betriebsstellungen von der Stellungsmeldeanordnung angezeigt werden. Ausgehend hiervon ist es Aufgabe der vorliegenden Erfindung, ein Verfahren zur Ausmittelung eines Laststufenschalters zur Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators anzugeben, das, ohne manuell gesteuertes Beschalten verschiedener Stufenpositionen der Regelwicklung, eine Justierung einer vordefinierten Betriebsstellung des Laststufenschalters ermöglicht.In these known from the prior art position signaling devices so each signaling contact a fixed operating position of the tap changer, ie winding tap of the control winding of the tapped transformer assigned. Again, the mechanical coupling or adjustment of the tap changer must be done with the position indicator according to a fixed circuit diagram, otherwise incorrect operating positions are displayed by the position indicator. Based on this, it is an object of the present invention to provide a method for determining an on-load tap changer for switching between different winding taps of a tapped transformer, which allows, without manually controlled switching different stages positions of the control winding, an adjustment of a predefined operating position of the on-load tap-changer.

Diese Aufgabe wird durch ein Verfahren zur Ausmittelung eines Laststufenschalters zur Umschaltung zwischen verschiedenen Wicklungsanzapfungen eines Stufentransformators mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen dabei besonders bevorzugte Weiterbildungen der Erfindung. Unter Ausmittelung wird im Rahmen der vorliegenden Erfindung das Erreichen einer vordefinierten Betriebsstellung des Laststufenschalters verstanden.This object is achieved by a method for determining an on-load tap changer for switching between different winding taps of a tapped transformer having the features of the first claim. The subclaims relate to particularly preferred developments of the invention. Under evaluation is understood in the context of the present invention, the achievement of a predefined operating position of the on-load tap-changer.

Die allgemeine erfinderische Idee besteht darin, eine vordefinierte Betriebsstellung des Laststufenschalters zu erreichen, indem nach der Inbetriebnahme des Laststufenschalters ein Motorantrieb von einer parametrierten Steuereinrichtung in eine erste Drehrichtung aktiviert wird, so dass der Laststufenschalter seine stationären Betriebsstellungen, also die verschiedenen Wicklungsanzapfungen des Stufentransformators, in Richtung der ersten Wicklungsanzapfung beginnt zu durchlaufen, wobei mittels der Steuereinrichtung das Erreichen der Endstellung des Laststufenschalters erkannt wird, wobei wiederum nachfolgend der Motorantrieb in eine zweite Drehrichtung aktiviert wird, so dass der Lasstufenschalter anschließend den Regelbereich in der entgegengesetzten Umschaltrichtung bis zum Erreichen der ersten stationären Betriebsstellung durchläuft, und wobei anschließend eine Konfiguration der ersten stationären Betriebsstellung als vordefinierte Betriebsstellung mit Hilfe der nichtflüchtig gespeicherten Parametrierung der Steuereinrichtung erfolgt. Damit definiert das erfindungsgemäße Verfahren nach Inbetriebnahme des Laststufenschalters eigenständig eine erste stationäre Betriebsstellung als Bezugsgröße für alle nachfolgenden Schalthandlungen. Da diese definierte Betriebsstellung softwaregestützt nichtflüchtig gespeichert wird, ist damit zu jedem späteren Zeitpunkt nachvollziehbar, wie viel Umschaltungen in welche Umschaltrichtung der Laststufenschalter vollzogen hat und damit letzten Endes in welcher stationären Betriebsstellung sich der Laststufenschalter aktuell befindet. Mit anderen Worten wird nach dem Wesen der Erfindung also der mechanische Anschlag des Regelbereiches des Laststufenschalters verwendet, um nachfolgend eine Normierung auf eine definierte stationäre Betriebsstellung des Laststufenschalters vorzunehmen.The general inventive idea is to achieve a predefined operating position of the on-load tap-changer by activating a motor drive by a parameterized control device in a first direction of rotation after start-up of the on-load tap-changer, so that the on-load tap-changer switches its stationary operating positions, ie the various winding taps of the tapped transformer Direction of the first winding tap begins to run through, by means of the control device, the achievement of the end position of the on-load tap changer is detected, again below the motor drive is activated in a second direction of rotation, so that the Lasstufenschalter then the control range in the opposite switching direction until reaching the first stationary Run through operating position, and then followed by a configuration of the first stationary operating position as a predefined operating position using the non-volatile stored parameterization of the control device takes place. Thus, the method according to the invention after commissioning of the on-load tap-changer independently defines a first stationary operating position as a reference variable for all subsequent switching operations. Since this defined operating position is stored in a software-supported non-volatile manner, this makes it comprehensible at any later time how much switching has taken place in which switchover direction of the on-load tap-changer and thus ultimately in which steady-state operating position the on-load tap-changer is currently located. In other words, according to the essence of the invention, therefore, the mechanical stop of the control range of the on-load tap-changer is used to subsequently carry out a standardization to a defined stationary operating position of the on-load tap-changer.

Nach einer besonderen Weiterbildung der Erfindung erkennt die Steuereinrichtung den mechanischen Endanschlag des Regelbereiches des Laststufenschalters, indem die Stromstärke des Motorantriebs nach dessen Aktivierung in eine erste Drehrichtung nicht flüchtig gespeichert und in definierten Zeitabständen mit einem in der Steuereinrichtung als Stromgrenzwert parametrierten Höchstwert verglichen wird. Überschreitet dabei der aktuell ermittelte Stromwert den definierten Sollwert, so wird ein elektrisches Signal generiert, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt.According to a particular embodiment of the invention, the control device detects the mechanical end stop of the control range of the on-load tap-changer by non-volatile storage of the current of the motor drive after its activation in a first direction of rotation and is compared at defined intervals with a maximum value parameterized in the control device as current limit. If the currently determined current value exceeds the defined setpoint value, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.

Nach einer nochmals weiteren Ausführungsform der Erfindung wird der mechanische Endanschlag des Regelbereiches des Laststufenschalters über die Steuereinrichtung detektiert, indem mittels eines Sensors in regelmäßigen Zeitabständen die Rotationsgeschwindigkeit der Antriebswelle des Motorantriebes detektiert. Ist der ermittelte Wert der Rotationsgeschwindigkeit gleich 0, so wird ein elektrisches Signal generiert, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt.According to yet another embodiment of the invention, the mechanical end stop of the control range of the on-load tap-changer is detected by the control device by means of a sensor at regular intervals detects the rotational speed of the drive shaft of the motor drive. If the determined value of the rotational speed is equal to 0, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer.

Nach einer wiederum weiteren Ausführungsform der Erfindung wird beim Durchlaufen des Regelbereichs des Laststufenschalters in eine erste Drehrichtung bei jedem Erreichen einer nächsten stationären Betriebsstellung ein Meldekontakt beschaltet, wobei der Auslösezeitpunkt, d. h. die Beschaltung des Meldekontaktes, mittels der Steuereinrichtung nichtflüchtig gespeichert wird, wobei die Zeit zwischen zwei Auslösezeitpunkten mit einem maximal zulässigen Grenzwert verglichen wird, wobei bei Überschreiten des maximal zulässigen Grenzwertes ein elektrisches Signal generiert wird, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt. Dies kann beispielsweise dadurch erfolgen, dass mit der Antriebwelle des Motorantriebs mindestens eine Nockenscheibe in Dreheingriff gebracht wird, die ihrerseits wenigstens einen Mikroschalter je Umdrehung der Nockenscheibe betätigt. Je nach Übersetzungsverhältnis kann die Umdrehung der Nockenscheibe synchron mit einer Umschaltung des Lastumschalters von einer ersten auf eine benachbarte zweite stationäre Betriebsstellung erfolgen. Der Mikroschalter löst also pro Umdrehung der Nockenscheibe und damit pro Umschaltung, also zulässiger stationärer Betriebsstellung des Laststufenschalters, einmal aus und meldet damit einen erfolgreich abgeschlossenen Umschaltvorgang.According to yet another embodiment of the invention, a signaling contact is connected when passing through the control range of the on-load tap-changer in a first direction of rotation at each reaching a next steady-state operating position, wherein the triggering time, d. H. the circuitry of the signaling contact, by means of the control device is stored non-volatile, wherein the time between two trip times is compared with a maximum allowable limit, wherein when exceeding the maximum allowable limit, an electrical signal is generated indicating the control device, the mechanical end stop of the on-load tap changer. This can for example take place in that at least one cam disc is brought into rotary engagement with the drive shaft of the motor drive, which in turn actuates at least one microswitch per revolution of the cam disc. Depending on the gear ratio, the rotation of the cam can take place synchronously with a changeover of the diverter switch from a first to an adjacent second stationary operating position. The microswitch thus triggers once per revolution of the cam and thus per switch, ie permissible stationary operating position of the on-load tap-changer, and thus signals a successfully completed switching process.

Das erfindungsgemäße Verfahren soll nachstehend noch beispielhaft an Hand einer Figur näher erläutert werden.The method according to the invention will be explained in more detail below by way of example with reference to a figure.

Die Figur zeigt einen schematischen Ablaufplan des erfindungsgemäßen Verfahrens.The figure shows a schematic flow chart of the method according to the invention.

Ausgangspunkt des erfindungsgemäßen Verfahrens bildet die Inbetriebnahme des Laststufenschalters mit einem Stufentransformator. Bei der Inbetriebnahme wird der Laststufenschalter mit seinen Anschlusskontakten an der Regelwicklung des Stufentransformators angeschlossen, der Motorantrieb montiert und der Laststufenschalter samt Motorantrieb an eine softwaregestützte elektronische Steuereinrichtung angeschlossen, die ihrerseits wiederum mit einer Ausgabeeinrichtung verbunden werden kann. Die Steuereinrichtung ist bei Inbetriebnahme zu parametrieren, insbesondere ist dabei eine anfängliche Bewegungsrichtung der Antriebswelle des Motorantriebs zu definieren, weiterhin ist die Anzahl zulässiger stationärer Betriebsstellungen des Laststufenschalters anzugeben und schlussendlich zu definieren, wo der Anfang des Regelbereiches, d.h. die erste zulässige stationäre Betriebsstellung, und das Ende des Regelbereiches, also die letzte zulässige Betriebsstellung, des Laststufenschalters liegt. Diese Parameter sind in der Steuereinrichtung nicht flüchtig zu speichern. Wie bereits erläutert, weisen Laststufenschalter üblicherweise einen Wähler zur leistungslosen Anwahl der jeweiligen Wicklungsanzapfung des Stufentransformators, auf die umgeschaltet werden soll, und einem Lastumschalter zur eigentlichen Umschaltung von der bisherigen auf die neue, vorgewählte Wicklungsanzapfung auf. Abhängig von dem, dem Laststufenschalter zu Grunde liegendem Schaltertyp, sind bei einer Regelwicklung mit beispielsweise 5 Wicklungsanzapfungen nach dem Widerstandsschnellschalt-Prinzip 5 stationäre Betriebsstellungen zulässig und nach dem Rekatorschaltprinzip 9 stationäre Betriebsstellungen, da hier Mittelstellungen als stationäre Betriebsstellungen zulässig sind.Starting point of the method according to the invention is the commissioning of the on-load tap-changer with a tapped transformer. During commissioning, the on-load tap-changer is connected with its connection contacts to the control winding of the tapped transformer, the motor drive is mounted and the on-load tap-changer, including the motor drive, is connected to a software-supported electronic control device, which in turn can be connected to an output device. The control device is to be parameterized during commissioning, in particular an initial direction of movement of the drive shaft of the motor drive is to be defined, furthermore the number of permissible stationary operating positions of the on-load tap-changer must be specified and finally defined, where the beginning of the control range, i. the first permissible stationary operating position, and the end of the control range, ie the last permissible operating position, the on-load tap-changer is. These parameters are not volatile in the controller. As already explained, on-load tap-changers usually have a selector for powerless selection of the respective winding tapping of the tapped transformer to be switched to, and a diverter switch for actually switching from the previous to the new, preselected winding tapping. Depending on the switch type underlying the on-load tap-changer, steady-state operating positions are permissible for a control winding with, for example, 5 winding taps, and stationary operating positions according to the Rekator switching principle 9, since intermediate positions are permissible here as stationary operating positions.

Nachfolgend wird ein Motorantrieb von der dann parametrierten Steuereinrichtung in eine erste Drehrichtung aktiviert, so dass der Laststufenschalter seine stationären Betriebsstellungen, also die verschiedenen Wicklungsanzapfungen des Stufentransformators, in Richtung der ersten Wicklungsanzapfung beginnt zu durchlaufen. Mit erster Wicklungsanzapfung ist hier die der Stammwicklung des Stufentransformtors am nächsten gelegene Wicklungsanzapfung der Regelwicklung gemeint - also der Beginn des Regelbereiches eines Stufentransformators. Bei dem Motorantrieb handelt sich beispielsweise um einen aus dem Stand der Technik bekannten Schrittmotor.Subsequently, a motor drive is activated by the then parameterized control device in a first direction of rotation, so that the on-load tap changer its stationary operating positions, ie the different winding taps of the tapped transformer, in the direction of the first winding tapping begins to go through. The first winding tapping here means the winding winding of the control winding closest to the main winding of the step transformer gate - ie the start of the control range of a tapped transformer. The motor drive is, for example, a stepping motor known from the prior art.

In einem wiederum nachfolgenden Verfahrensschritt wird das Erreichen der Endstellung mittels der Steuereinrichtung erkannt. Unter Endstellung wird im Rahmen der vorliegenden Erfindung der mechanische Endanschlag des Laststufenschalters verstanden, gegen den der bewegte Teil des Laststufenschalters fährt, wenn er den Anfang bzw. das Ende seines Regelbereiches erreicht hat. Dies kann beispielsweise dadurch erfolgen, dass die Steuereinrichtung den mechanischen Endanschlag des Regelbereiches des Laststufenschalters erkennt, indem die Stromstärke des Motorantriebs nach dessen Aktivierung in eine erste Drehrichtung nicht flüchtig gespeichert und in definierten Zeitabständen mit einem in der Steuereinrichtung als Stromgrenzwert parametrierten Höchstwert verglichen wird. Überschreitet dabei der aktuell ermittelte Stromwert den definierten Sollwert, so wird ein elektrisches Signal generiert, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt. Alternativ ist es auch möglich, dass der mechanische Endanschlag des Regelbereiches des Laststufenschalters über die Steuereinrichtung detektiert wird, indem mittels eines Sensors in regelmäßigen Zeitabständen die Rotationsgeschwindigkeit der Antriebswelle des Motorantriebes nicht detektiert. Ist der ermittelte Wert der Rotationsgeschwindigkeit gleich 0, so wird ein elektrisches Signal generiert, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt. Nach einer wiederum weiteren Ausführungsform der Erfindung wird beim Durchlaufen des Regelbereichs des Laststufenschalters in eine erste Drehrichtung bei jedem Erreichen einer nächsten stationären Betriebsstellung ein Meldekontakt beschaltet, wobei der Auslösezeitpunkt, d. h. die Beschaltung des Meldekontaktes, mittels der Steuereinrichtung nichtflüchtig gespeichert wird, wobei die Zeit zwischen zwei Auslösezeitpunkten mit einem maximal zulässigen Grenzwert verglichen wird, wobei bei Überschreiten des maximal zulässigen Grenzwertes ein elektrisches Signal generiert wird, das der Steuereinrichtung den mechanischen Endanschlag des Laststufenschalters anzeigt. Dies kann beispielsweise dadurch erfolgen, dass mit der Antriebwelle des Motorantriebs mindestens eine Nockenscheibe in Dreheingriff gebracht wird, die ihrerseits wenigstens einen Mikroschalter je Umdrehung der Nockenscheibe betätigt. Je nach Übersetzungsverhältnis kann die Umdrehung der Nockenscheibe synchron mit einer Umschaltung des Lastumschalters von einer ersten auf eine benachbarte zweite stationäre Betriebsstellung erfolgen. Der Mikroschalter löst also pro Umdrehung der Nockenscheibe und damit pro Umschaltung, also zulässiger stationärer Betriebsstellung des Laststufenschalters, einmal aus und meldet damit einen erfolgreich abgeschlossenen Umschaltvorgang.In a subsequent step, the reaching of the end position by means of the control device is detected. Under end position is understood in the context of the present invention, the mechanical end stop of the on-load tap-changer against which moves the moving part of the on-load tap-changer when he the beginning or the end of his Has reached the control range. This can be done, for example, by the control device recognizing the mechanical end stop of the control range of the on-load tap-changer by nonvolatilely storing the amperage of the motor drive after its activation in a first direction of rotation and comparing it at defined time intervals with a maximum value parameterized in the control device as current limit value. If the currently determined current value exceeds the defined setpoint value, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer. Alternatively, it is also possible that the mechanical end stop of the control range of the on-load tap-changer is detected via the control device by not detecting the rotational speed of the drive shaft of the motor drive by means of a sensor at regular time intervals. If the determined value of the rotational speed is equal to 0, an electrical signal is generated which indicates to the control device the mechanical limit stop of the on-load tap-changer. According to yet another embodiment of the invention, a signaling contact is connected when passing through the control range of the on-load tap changer in a first direction of rotation at each reaching a next stationary operating position, wherein the triggering time, ie the wiring of the signaling contact, is stored non-volatile means of the control device, the time between two triggering times is compared with a maximum permissible limit value, wherein when exceeding the maximum permissible limit value, an electrical signal is generated, which indicates the control device, the mechanical end stop of the on-load tap-changer. This can for example take place in that at least one cam disc is brought into rotary engagement with the drive shaft of the motor drive, which in turn actuates at least one microswitch per revolution of the cam disc. Depending on the gear ratio, the rotation of the cam can take place synchronously with a changeover of the diverter switch from a first to an adjacent second stationary operating position. The microswitch thus triggers once per revolution of the cam and thus per switch, ie permissible stationary operating position of the on-load tap-changer, thus indicating a successfully completed switching process.

In einem folgenden Verfahrensschritt wird der Motorantrieb von der Steuereinrichtung in eine zweite Drehrichtung aktiviert, so dass der Wähler anschließend den Regelbereich in der entgegengesetzten Umschaltrichtung bis zum Erreichen der ersten stationären Betriebsstellung durchläuft und bei Erreichen der ersten stationären Betriebsstellung stoppt. Abschließend erfolgt eine Konfiguration der ersten stationären Betriebsstellung als vordefinierte Betriebsstellung mit Hilfe der nichtflüchtig gespeicherten Parametrierung der Steuereinrichtung. Damit definiert das erfindungsgemäße Verfahren nach Inbetriebnahme des Laststufenschalters eigenständig eine erste stationäre Betriebsstellung als Bezugsgröße für alle nachfolgenden Schalthandlungen. Da diese definierte Betriebsstellung softwaregestützt nichtflüchtig gespeichert wird, ist damit zu jedem späteren Zeitpunkt nachvollziehbar, wie viel Umschaltungen in welche Umschaltrichtung der Laststufenschalter vollzogen hat und damit letzten Endes, in welcher stationären Betriebsstellung sich der Laststufenschalter aktuell befindet. Mit anderen Worten wird nach dem Wesen der Erfindung also der mechanische Anschlag des Regelbereiches des Laststufenschalters verwendet, um nachfolgend eine Normierung auf eine definierte stationäre Betriebsstellung des Laststufenschalters vorzunehmen.In a subsequent method step, the motor drive is activated by the control device in a second direction of rotation, so that the selector then passes through the control range in the opposite switching direction until reaching the first stationary operating position and stops when reaching the first stationary operating position. Finally, a configuration of the first stationary operating position takes place as a predefined operating position with the aid of the non-volatile parameterization of the control device. Thus, the method according to the invention after commissioning of the on-load tap-changer independently defines a first stationary operating position as a reference variable for all subsequent switching operations. Since this defined operating position is stored in a software-supported non-volatile manner, it is comprehensible at any later time how much switching has taken place in which switching direction of the on-load tap-changer and thus, in the end, in which steady-state operating position the on-load tap-changer is currently located. In other words, according to the essence of the invention, therefore, the mechanical stop of the control range of the on-load tap-changer is used to subsequently carry out a standardization to a defined stationary operating position of the on-load tap-changer.

Claims (4)

  1. Method of averaging values of an on-load tap changer, which is actuable by means of a motor drive, for switching over between different winding taps of a tapped transformer, characterised by the following method steps:
    - after the on-load tap changer has been placed in operation the motor drive is activated by a parameterised control device in a first rotational direction so that the on-load tap changer begins to run through its stationary operating settings, thus the different winding taps of the tapped transformer, in the direction of the first winding tap,
    - reaching of the end setting of the on-load tap changer is detected by means of the control device,
    - the motor drive is activated in a second direction of rotation so that the on-load tap changer subsequently runs through the regulating range in the opposite switchingover direction until reaching the first stationary operating setting and
    - subsequently configuration of the first stationary operating setting as pre-defined operating setting is carried out with the help of the parameterisation, which is stored in non-volatile manner, of the control device.
  2. Method according to claim 1, characterised in that
    reaching of the end setting of the on-load tap changer is detected by means of the control device in that the current intensity of the motor drive after activation thereof in a first rotational direction is subject to non-volatile storage,
    this current intensity subject to non-volatile storage is compared at defined intervals in time with a maximum value parameterised as current limit value in the control device and
    if a previously defined target value is exceeded by the instantaneously determined current intensity an electrical signal is generated by the control device so that the control device indicates the mechanical end abutment of the on-load tap changer.
  3. Method according to claim 1, characterised in that
    reaching of the end setting of the on-load tap changer is detected by means of the control device in that the rotational speed of the drive shaft of the motor drive is detected by means of a sensor at regular intervals in time and
    on reaching the determined value of 0 of the rotational speed an electrical signal is generated by the control device so that the control device indicates the mechanical end abutment of the on-load tap changer.
  4. Method according to claim 1, characterised in that
    reaching of the end setting of the on-load tap changer is detected by means of the control device in that during transit of the regulating range of the on-load tap changer in a first rotational direction a reporting contact is connected on each attainment of a next stationary operating setting,
    the trigger instant, i.e. the connecting of the reporting contact, is subject to non-volatile storage by means of the control device,
    the time between two trigger instants is compared with a maximum permissible limit value and
    if the maximum permissible limit value is exceeded an electrical signal is generated so that the control device indicates the mechanical end abutment of the on-load tap changer.
EP13715631.1A 2012-04-27 2013-03-25 Method for centering of a load tape-changer Active EP2842148B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012103742 2012-04-27
DE102012104089A DE102012104089A1 (en) 2012-04-27 2012-05-10 Method for evaluating an on-load tap-changer
PCT/EP2013/056245 WO2013160044A1 (en) 2012-04-27 2013-03-25 Method for averaging the voltage in an on-load tap changer

Publications (2)

Publication Number Publication Date
EP2842148A1 EP2842148A1 (en) 2015-03-04
EP2842148B1 true EP2842148B1 (en) 2016-05-18

Family

ID=49323162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13715631.1A Active EP2842148B1 (en) 2012-04-27 2013-03-25 Method for centering of a load tape-changer

Country Status (12)

Country Link
US (1) US9966203B2 (en)
EP (1) EP2842148B1 (en)
JP (1) JP6290182B2 (en)
KR (1) KR102038429B1 (en)
CN (1) CN104205274B (en)
BR (1) BR112014021196B1 (en)
DE (1) DE102012104089A1 (en)
HK (1) HK1203105A1 (en)
RU (1) RU2643509C2 (en)
UA (1) UA113003C2 (en)
WO (1) WO2013160044A1 (en)
ZA (1) ZA201405904B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9600004B2 (en) 2015-02-09 2017-03-21 General Electric Company System and method for regulation of voltage on an electrical network

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58188018A (en) * 1982-04-28 1983-11-02 株式会社東芝 On-load tap changer
JPS61105607A (en) * 1984-10-29 1986-05-23 Hitachi Ltd Origin position setting device of robot
JPS621213A (en) * 1985-06-27 1987-01-07 Toshiba Corp Single-substance test apparatus of tap selector for on-load tap changer
JPH04317537A (en) * 1991-04-17 1992-11-09 Fuji Electric Co Ltd Screw transmission provided with motor
DE4237242A1 (en) * 1992-05-15 1994-05-05 Reinhausen Maschf Scheubeck Step switch for a preferably cast-resin-insulated step transformer
DE9216746U1 (en) * 1992-12-09 1994-04-07 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Position indicator for tap changer of tap changers
JPH06250502A (en) * 1993-03-01 1994-09-09 Ricoh Co Ltd Automatic cleaning device for charger
US5760492A (en) * 1995-01-17 1998-06-02 Hitachi, Ltd. Control system for power transmission and distribution system
US5619121A (en) * 1995-06-29 1997-04-08 Siemens Energy & Automation, Inc. Load voltage based tap changer monitoring system
JPH09213542A (en) * 1996-02-02 1997-08-15 Toshiba Corp State monitoring device for on-load tap changer
DE19705576C2 (en) * 1997-02-14 1999-01-07 Reinhausen Maschf Scheubeck Position reporting arrangement
DE19746574C1 (en) * 1997-10-22 1999-02-04 Reinhausen Maschf Scheubeck Method of functional monitoring of step switches
US6072305A (en) * 1998-01-20 2000-06-06 Siemens Power Transmission & Distribution, Inc. Electronic tap position indication system
JP2001267150A (en) * 2000-03-17 2001-09-28 Fuji Electric Co Ltd On-load tap changer
DE10062679C2 (en) * 2000-12-15 2003-08-14 Reinhausen Maschf Scheubeck Step switch with switching monitoring
JP3809361B2 (en) * 2001-10-22 2006-08-16 トヨタ自動車株式会社 Actuator control device
UA84417C2 (en) * 2003-04-03 2008-10-27 Машиненфабрик Райнхаузен Гмбх Multipoint switch (versions)
MXPA06002635A (en) * 2003-09-08 2006-09-04 Cooper Technologies Co Preventive maintenance tapping and duty cycle monitor for voltage regulator.
JP2006179680A (en) * 2004-12-22 2006-07-06 Chubu Electric Power Co Inc Method and device for determining and displaying present tap location of automatic voltage regulator
EP1884965B1 (en) * 2005-05-09 2014-12-24 Mitsubishi Denki Kabushiki Kaisha Change action monitoring device for on-load tap changers
US7417411B2 (en) * 2005-09-14 2008-08-26 Advanced Power Technologies, Llc Apparatus and method for monitoring tap positions of load tap changer
BRPI0715824B8 (en) * 2006-08-25 2022-12-13 Abb Technology Ltd MOTOR DRIVE CABINET ON A LOAD TAP-CHANGER AND ON-LOAD TAP-CHANGER
BRPI0715939A2 (en) * 2006-08-25 2013-09-17 Abb Research Ltd drive system for a tap-changer
JP4767141B2 (en) 2006-09-27 2011-09-07 三菱電機株式会社 Switching operation control method of tap switching device when loaded
DE102009043171B4 (en) 2009-09-26 2014-11-20 Maschinenfabrik Reinhausen Gmbh Step switch with vacuum interrupters
US8643221B2 (en) * 2010-06-08 2014-02-04 Siemens Energy, Inc. Retrofit kit, circuitry and method for reconfiguring a tap changer to avoid electrical arcing
UA112302C2 (en) * 2010-12-17 2016-08-25 Машіненфабрік Райнхаузен Гмбх STEP SWITCH

Also Published As

Publication number Publication date
DE102012104089A1 (en) 2013-10-31
HK1203105A1 (en) 2015-10-16
US9966203B2 (en) 2018-05-08
CN104205274B (en) 2017-03-08
CN104205274A (en) 2014-12-10
KR20150003207A (en) 2015-01-08
KR102038429B1 (en) 2019-10-30
JP6290182B2 (en) 2018-03-07
RU2643509C2 (en) 2018-02-02
RU2014138630A (en) 2016-06-20
EP2842148A1 (en) 2015-03-04
ZA201405904B (en) 2015-11-25
BR112014021196B1 (en) 2021-02-02
WO2013160044A1 (en) 2013-10-31
US20160035506A1 (en) 2016-02-04
JP2015519737A (en) 2015-07-09
UA113003C2 (en) 2016-11-25

Similar Documents

Publication Publication Date Title
EP3427284B1 (en) On-load tap changer device
DE102012105152B4 (en) On-load tap-changer for uninterrupted switching between different winding taps of a tapped transformer
EP2842147B1 (en) Method for monitoring a tap change
WO2018082949A1 (en) Device for operating and for determining an operating state of an electromagnetic actuator, clutch device, and motor vehicle drive train
EP1958223B1 (en) Tap changer having a switching monitoring device
EP2839490B1 (en) Method for monitoring a step switch
EP2842148B1 (en) Method for centering of a load tape-changer
EP2421014A1 (en) Stepping switch
EP2981979B1 (en) Method for performing a switching process in an on-load tap changer
DE102013109289B4 (en) On-load tap-changer, tap-changer for voltage regulation and method for carrying out a changeover in the tapped transformer
EP3234971B1 (en) Method for cleaning an on-load tap changer, and on-load tap changer
EP4272235A1 (en) Switch assembly comprising an on-load tap changer and a drive system
WO2020229130A1 (en) Drive system for a switch, and method for driving a switch
WO2020229124A1 (en) Method for carrying out a switchover of a switch, and drive system for a switch
DE102019130462B4 (en) Selector for on-load tap changer as well as on-load tap changer with it
WO2005041230A1 (en) Load tap changer with motor drive
EP3963612B1 (en) Switch assembly with drive system and method for driving a switch
WO2017207237A1 (en) On-load tap changer head and on-load tap changer having an on-load tap changer head
WO2014048650A1 (en) On-load tap changer with preselector
WO2012107309A1 (en) On-load tap changer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20141127

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHMID, SEBASTIAN

Inventor name: PLITZKO, DOMINIK

Inventor name: BIERINGER, ALFRED

DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1203105

Country of ref document: HK

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160219

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

Ref country code: AT

Ref legal event code: REF

Ref document number: 801115

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160615

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013003068

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160818

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160819

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160919

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013003068

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1203105

Country of ref document: HK

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170325

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 801115

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160918

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240320

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240321

Year of fee payment: 12

Ref country code: GB

Payment date: 20240322

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240312

Year of fee payment: 12

Ref country code: SE

Payment date: 20240321

Year of fee payment: 12

Ref country code: IT

Payment date: 20240329

Year of fee payment: 12

Ref country code: FR

Payment date: 20240319

Year of fee payment: 12