EP2842148B1 - Procédé pour centrer d'un changeur de prises en charge - Google Patents

Procédé pour centrer d'un changeur de prises en charge Download PDF

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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)
English (en)
Other versions
EP2842148A1 (fr
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/fr
Application granted granted Critical
Publication of EP2842148B1 publication Critical patent/EP2842148B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Protection Of Transformers (AREA)

Claims (4)

  1. Procédé permettant de centrer un commutateur à gradins en charge actionné par un entraînement motorisé pour permettre d'effectuer une commutation entre différentes prises d'enroulement d'un transformateur à gradins,
    caractérisé par
    les étapes de procédé suivantes consistant à :
    - après la mise en fonctionnement du commutateur à gradins en charge, l'entraînement motorisé est activé par un dispositif de commande paramétré dans un premier sens de rotation de sorte que le commutateur à gradins en charge commencent à parcourir ses positions de fonctionnement stationnaires, donc les différentes prises d'enroulement du transformateur à gradins, en direction de la première prise d'enroulement,
    - au moyen du dispositif de commande l'atteinte de la position finale du commutateur à gradins en charge est détectée,
    - l'entraînement motorisé est activé dans un second sens de rotation de sorte que le commutateur à gradins en charge parcoure ensuite la plage de réglage dans le sens de commutation opposé jusqu'à avoir atteint la première position de fonctionnement stationnaire, puis
    - une configuration de la première position de fonctionnement stationnaire est ensuite effectuée en tant que position de fonctionnement prédéfinie à l'aide du paramétrage de l'installation de commande enregistré dans une mémoire non volatile.
  2. Procédé conforme à la revendication 1,
    caractérisé en ce qu'
    au moyen du dispositif de commande on détecte l'atteinte de la position finale du commutateur à gradins en charge en enregistrant dans une mémoire non volatile l'intensité de courant de l'entraînement motorisé après son activation dans le premier sens de rotation,
    dans des intervalles de temps définis, cette intensité de courant enregistrée dans une mémoire non volatile est comparée à une valeur maximum paramétrée dans l'unité de commande en tant que valeur limite de courant, et
    lorsque l'intensité de courant actuellement déterminée dépasse une valeur de consigne définie auparavant un signal électrique est généré par le dispositif de commande de sorte que ce dispositif de commande indique la butée mécanique finale du commutateur à gradins en charge.
  3. Procédé conforme à la revendication 1,
    caractérisé en ce que
    l'on détecte l'atteinte de la position finale du commutateur à gradins en charge au moyen du dispositif de commande en détectant au moyen d'un capteur, la vitesse de rotation de l'arbre d'entraînement de l'entraînement motorisé, dans des intervalles de temps réguliers, lorsqu'a été atteinte la valeur détectée de la vitesse de rotation égale à zéro, un signal électrique est généré par le dispositif de commande de sorte que ce dispositif de commande indique la butée mécanique finale du commutateur à gradins en charge.
  4. Procédé conforme à la revendication 1,
    caractérisé en ce que
    l'on détecte l'atteinte de la position finale du commutateur à gradins en charge au moyen du dispositif de commande en branchant un contact de signalisation, lors du parcours de la plage de réglage du commutateur à gradins en charge dans le premier sens de rotation, à chaque atteinte de la position de fonctionnement stationnaire suivante,
    le point de déclenchement, c'est-à-dire le branchement du contact de signalisation est enregistré dans une mémoire non volatile au moyen du dispositif de commande,
    le temps écoulé entre deux instants de déclenchement est comparé à une valeur limite maximum autorisée, et
    en cas de dépassement de la valeur limite maximum autorisée un signal électrique est généré de sorte que le dispositif de commande indique la butée mécanique finale du commutateur à gradins en charge.
EP13715631.1A 2012-04-27 2013-03-25 Procédé pour centrer d'un changeur de prises en charge Active EP2842148B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012103742 2012-04-27
DE102012104089A DE102012104089A1 (de) 2012-04-27 2012-05-10 Verfahren zur Ausmittelung eines Laststufenschalters
PCT/EP2013/056245 WO2013160044A1 (fr) 2012-04-27 2013-03-25 Procédé d'ajustement d'un commutateur à plots

Publications (2)

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

Family

ID=49323162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13715631.1A Active EP2842148B1 (fr) 2012-04-27 2013-03-25 Procédé pour centrer d'un changeur de prises en charge

Country Status (12)

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

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

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Also Published As

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

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