EP2839490B1 - Procédé destiné à la surveillance d'un commutateur à gradins - Google Patents

Procédé destiné à la surveillance d'un commutateur à gradins Download PDF

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Publication number
EP2839490B1
EP2839490B1 EP13709921.4A EP13709921A EP2839490B1 EP 2839490 B1 EP2839490 B1 EP 2839490B1 EP 13709921 A EP13709921 A EP 13709921A EP 2839490 B1 EP2839490 B1 EP 2839490B1
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EP
European Patent Office
Prior art keywords
current
time
tap changer
time instant
changeover switch
Prior art date
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EP13709921.4A
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German (de)
English (en)
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EP2839490A1 (fr
Inventor
Mario Schmeckebier
Alexander Winterer
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
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • 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
    • 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

Definitions

  • the invention relates to a method for monitoring a tap changer, which is used for uninterrupted switching between taps of a tapped transformer.
  • Tap changers have been used worldwide for many years to continuously switch between different winding taps of high-speed tap-changers.
  • Such tap changer according to the present invention 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 actual switching from the wired to the new, preselected winding tap.
  • the jump-like switching also called Lastumschaltersprung, is usually carried out with the aid of a force accumulator, when its triggering a switching shaft is rotated quickly.
  • the diverter switch also usually has switching contacts and resistor 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.
  • Such a method is from the DE 197 44 465 C1 or DE 10 2010 033195 B3 known, which forms the preamble of claim 1 of the present invention.
  • the torque is detected on the drive motor during operation of the tap changer, at the same time there is a position detection of the respective current positions of the tap changer. Subsequently, the values of the torque curve determined over time are stored, with the torque curve being broken down into typical time ranges, in each of which a separate setpoint / actual value comparison is made.
  • a synchronization by means of a synchronizing pulse which is generated when reaching a characteristic state in the load switching to a specific, defined time.
  • the torque curve is normalized and then subdivided into typical time periods, the monitoring windows, the specific, switch-specific parts of the Switch sequence correspond. This is followed by a comparison of the torque values of the individual monitoring windows with previously stored characteristic nominal values.
  • This distribution of the torque curve in individual windows is already the subject of said DE 197 44 465 C1 .
  • the triggering time of the energy storage which in turn triggers the sudden movement of the diverter switch used.
  • This triggering of the force accumulator as well as the subsequent diverter switch jump represent a typical, fast-running and thus easily detectable and a short time associated result at each actuation of the tap changer.
  • the object of the invention is to provide an advanced method for monitoring a tap changer, which allows a simple and reliable way to determine the triggering time of the energy storage and thus the Lastumschaltersprunges and thus allows reliable synchronization.
  • the general inventive idea is to use the change in the load current, ie the current at the tap changer, during a load switching for the determination of a synchronizing pulse.
  • the tap changer current changes, due to the short-term electrical contact on the two adjacent winding taps of the transformer and the subsequent completed switching to the new winding tapping, ie the next stage.
  • this change in current is reproduced by means of a sliding effective value formation and subsequent differentiation of the effective value.
  • the maximum value of the differentiated effective value of the current is determined; the time of its occurrence, ie the maximum amount, the time of Lastumschaltersprungs, ie the triggering time of the energy accumulator, assigned and used as a synchronization time for the sync pulse to order a normalization of the monitoring process on the predefined, characteristic event, namely the Lastumschaltersprung during to achieve the changeover of the tap changer.
  • a particular advantage of the invention is that from the continuous recording of the current load switching when the transformer is switched directly from the changing current can be determined during a switch and thus is independent of mechanical influences. Furthermore, it is advantageous that even with a manual operation of the tap changer, i. when cranking operation without electrically moving motor drive, the inventive method can be applied. This is not possible in the prior art.
  • Fig. 1 the method according to the invention is shown schematically.
  • an occurring current I is first determined at a diverter switch of the tap changer.
  • various means are available in the prior art.
  • the position detection of the tap changer i. its relative position over time t during complete switching. From this it can be deduced in which current position the individual subassemblies, such as preselector, selector, and diverter switch, are located within the overall switching sequence to be traversed.
  • This position detection is particularly advantageous by means of a resolver, which allows continuous detection.
  • the torque of the tap changer associated drive motor is detected during the operation. This can be determined in a particularly simple manner, for example by detecting the rms value of the current and the voltage of the drive motor assigned to the tap changer, in order to determine the active power in a manner known per se in order to calculate the corresponding torque in turn. Subsequently, a storage of the values of the current I at the diverter switch determined over the time t takes place.
  • the effective value leff of the current I at the diverter switch is formed. This is done continuously.
  • the respective effective value leff of the current at the diverter switch is differentiated; it turns out dIeff dt , Again the following becomes the maximum or the minimum of the differentiated course dIeff dt searched and associated with the corresponding time t 2 , where it occurs.
  • the reasoning for this is that, depending on whether with the Ladumschaltersprung an increasing or decreasing current profile is connected, resulting in the differentiated course, a maximum or a minimum.
  • the (unsigned) maximum of the amount is detected.
  • This time of occurrence of the maximum or the minimum t 2 is defined as the time of the diverter switch jump t LU , ie the triggering time of the energy accumulator. This determines a unique synchronization time. The synchronization is done.
  • Each window corresponds to a characteristic part of the respectively running switching sequence.
  • Such windows can z. B. include the period of operation of the preselector, the fine selector or the diverter switch.
  • Each window is limited in each case by two characteristic times, the time at which the beginning and end of the window are defined: t 0 -t 1 , t 1 ,..., T syn -t n .
  • Each of these windows is compared with pre-stored characteristic setpoints.
  • the selective comparison method it is not only possible to detect a deviation of the actual and the setpoint values of the torque and thus an error, but it can also be used to allocate an occurring error of a specific module which caused it, in order to draw conclusions about the function the individual modules of the tap changer, such as selection or turning, fine or diverter switch to make, which are operated sequentially with each load switching in a particular sequence.
  • Fig. 2 shows a schematic representation of the corresponding courses during a changeover. Shown is first the respective current I at the diverter switch, continue to its upper limit I g . This current I is first subjected to RMS; the resulting effective value leff is greased. At a time t 1 , the diverter switch LU is actuated, the actual load switching begins. After a certain period of time then begins the actual electrical switching between the winding taps. There is, as already explained, a differentiation of the RMS value dIeff dt , Also greased, the maximum is shown that results during the load switching at short notice.
  • the rms value of the current leff1 is higher or lower than the rms value of the current leff2 after the load switching. Whether it is higher or lower depends on the direction in which the tap changer is actuated, i. whether a voltage increase or a voltage reduction takes place.
  • Fig. 3 This effect can usefully be used for a further development of the method according to the invention, which in Fig. 3 is shown. It is between the in Fig. 1 with a and b designated times of the process sequence according to the invention still in Fig. 3 inserted sub-procedure inserted.
  • the rms value of the current leff1 is compared with the rms value of the current leff2 after the time t 2 before the time t 2 .
  • the two rms values leff1 and leff2 significantly different from each other which is considered as an indication for a proper load transfer and the detected point of time t 2 is defined as the time of the diverter switch jump t LU accepted and used for synchronization.
  • the time of a load changeover can thus be determined very accurately when the transformer is switched on; He is also independent of mechanical influences.
  • a further advantage of the method according to the invention is that it can also be used in manual cranking, i. without electrically moving motor drive, is applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electric Motors In General (AREA)
  • Protection Of Transformers (AREA)
  • Control Of Ac Motors In General (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Stepping Motors (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Claims (3)

  1. Procédé de surveillance d'un commutateur à gradins selon lequel :
    pendant l'actionnement du commutateur à gradins on détecte un couple de rotation d'un moteur d'entraînement,
    on détecte simultanément la position actuelle respective du commutateur à gradins,
    on effectue ensuite une mise en mémoire des valeurs de la courbe de variation du couple de rotation détectées en fonction du temps,
    on effectue ensuite une synchronisation par une impulsion de synchronisation, et
    on décompose la courbe de variation du couple de rotation en zones chronologiques spécifiques dans lesquelles on effectue respectivement une comparaison séparée valeur réelle valeur de consigne,
    caractérisé en ce qu'
    on détermine en continu l'intensité I du courant alimentant un commutateur,
    on détecte ensuite également en continu la valeur efficace Ieff de l'intensité du courant I sur le commutateur,
    on différentie ensuite la valeur efficace respective Ieff de l'intensité de courant sur le commutateur de façon à obtenir dIeff dt ,
    Figure imgb0012
    on détecte à nouveau ensuite le maximum de la valeur dIeff dt
    Figure imgb0013
     de la
    courbe différentiée et on lui associe l'instant t2 correspondant pour lequel ce maximum se présente, et
    on considère l'instant t2 pour lequel apparaît ce maximum comme étant l'instant tLU, du saut du commutateur et on l'utilise en tant qu'instant de synchronisation pour l'impulsion de synchronisation.
  2. Procédé conforme à la revendication 1,
    caractérisé en ce que après avoir déterminé le maximum dIeff dt
    Figure imgb0014
     de la courbe différentiée et l'instant t2 correspondant auquel il apparaît, on effectue encore une comparaison de la valeur efficace de l'intensité de courant Ieff1 avant l'instant t2 avec la valeur efficace de l'intensité de courant Ieff2 après l'instant t2, et, on ne prend t2 en tant qu'instant du saut du commutateur tLU et on ne l'utilise pour la synchronisation que lorsque les deux valeurs efficaces Ieff1 et Ieff2 se distinguent notablement l'une de l'autre.
  3. Procédé conforme à la revendication 1,
    caractérisé en ce que
    l'on effectue la détermination du courant I que dans une fenêtre d'exploitation chronologique spécifique du commutateur à gradins dans laquelle le saut du commutateur est attendu.
EP13709921.4A 2012-04-16 2013-03-18 Procédé destiné à la surveillance d'un commutateur à gradins Active EP2839490B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103261 2012-04-16
PCT/EP2013/055539 WO2013156233A1 (fr) 2012-04-16 2013-03-18 Procédé de surveillance d'un changeur de prises de charge

Publications (2)

Publication Number Publication Date
EP2839490A1 EP2839490A1 (fr) 2015-02-25
EP2839490B1 true EP2839490B1 (fr) 2016-03-16

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Country Status (12)

Country Link
US (1) US9189000B2 (fr)
EP (1) EP2839490B1 (fr)
JP (1) JP6117338B2 (fr)
KR (1) KR102048324B1 (fr)
CN (1) CN104246948B (fr)
DE (1) DE102013102709B4 (fr)
ES (1) ES2576352T3 (fr)
HK (1) HK1202980A1 (fr)
RU (1) RU2629566C2 (fr)
UA (1) UA112794C2 (fr)
WO (1) WO2013156233A1 (fr)
ZA (1) ZA201406511B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012103736A1 (de) * 2012-04-27 2013-10-31 Maschinenfabrik Reinhausen Gmbh Verfahren zur Funktionsüberwachung eines Stufenschalters
AT516004B1 (de) * 2014-07-02 2017-04-15 Omicron Electronics Gmbh Verfahren und Vorrichtung zum Prüfen eines Stufenschalters eines Transformators
AT516005B1 (de) * 2014-07-02 2016-11-15 Omicron Electronics Gmbh Verfahren und Vorrichtung zum Prüfen eines Stufenschalters eines Transformators
AT515960B1 (de) * 2014-07-02 2016-08-15 Omicron Electronics Gmbh Verfahren und Vorrichtung zum Prüfen eines Stufenschalters eines Transformators
CN104658823B (zh) * 2015-02-09 2017-06-06 广州供电局有限公司 配永磁机构断路器及其调速控制装置与方法
CN106597058B (zh) * 2016-11-22 2019-01-29 深圳职业技术学院 一种配电系统电设备开关状态及距离位置判断的方法

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
JPS6139818A (ja) * 1984-07-30 1986-02-26 三菱電機株式会社 変圧器負荷時タツプ切換装置の運転監視装置
SU1686529A1 (ru) * 1989-03-06 1991-10-23 Предприятие П/Я Р-6062 Устройство дл контрол межконтактного зазора электромагнитного коммутационного аппарата
JPH09232159A (ja) * 1996-02-27 1997-09-05 Mitsubishi Electric Corp 負荷時タップ切換装置
DE19707528C1 (de) * 1997-02-25 1998-08-13 Reinhausen Maschf Scheubeck Stellungsanzeige
DE19744465C1 (de) * 1997-10-08 1999-03-11 Reinhausen Maschf Scheubeck Verfahren zur Überwachung eines Stufenschalters
DE19746574C1 (de) * 1997-10-22 1999-02-04 Reinhausen Maschf Scheubeck Verfahren zur Funktionsüberwachung von Stufenschaltern
CA2258223A1 (fr) * 1999-01-22 2000-07-22 Hydro-Quebec Procede de traitement de signatures vibro-acoustiques dans un systeme de commutation electromecanique haute-tension
DE19907834C1 (de) * 1999-02-24 2000-05-18 Reinhausen Maschf Scheubeck Verfahren zur Überwachung von Stufenschaltern
DE10003918C1 (de) * 2000-01-29 2001-07-05 Reinhausen Maschf Scheubeck Verfahren zur Überwachung des Kontaktabbrandes bei Stufenschaltern
RU2199788C2 (ru) * 2000-09-18 2003-02-27 Акционерное общество закрытого типа "Контактор" Устройство для проверки исправности максимальных защит переменного тока
GB2424766B (en) * 2005-03-31 2007-06-27 Areva T & D Sa An on-load tap changer
EP2054998A4 (fr) * 2006-08-25 2018-01-24 ABB Research LTD Systeme d'entrainement pour un changeur de prise
CN200950387Y (zh) * 2006-09-26 2007-09-19 上海华明电力设备制造有限公司 带有手动换档机构的有载分接开关
CN101197207B (zh) * 2006-12-06 2010-04-21 中国科学院电工研究所 一种不燃型有载分接开关
JP2009043474A (ja) 2007-08-07 2009-02-26 Panasonic Corp 電源供給装置
DE102010033195B3 (de) 2010-08-03 2011-11-10 Maschinenfabrik Reinhausen Gmbh Verfahren zur Überwachung eines Stufenschalters

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RU2014145871A (ru) 2016-06-10
WO2013156233A1 (fr) 2013-10-24
JP6117338B2 (ja) 2017-04-19
KR20150008113A (ko) 2015-01-21
UA112794C2 (uk) 2016-10-25
EP2839490A1 (fr) 2015-02-25
US20150153749A1 (en) 2015-06-04
CN104246948A (zh) 2014-12-24
HK1202980A1 (zh) 2015-10-09
US9189000B2 (en) 2015-11-17
KR102048324B1 (ko) 2019-11-25
ZA201406511B (en) 2015-11-25
RU2629566C2 (ru) 2017-08-30
DE102013102709A1 (de) 2013-10-17
ES2576352T3 (es) 2016-07-07
CN104246948B (zh) 2017-03-15
JP2015516793A (ja) 2015-06-11
DE102013102709B4 (de) 2015-04-16

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