EP2569781B1 - Laststufenschalter - Google Patents

Laststufenschalter Download PDF

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Publication number
EP2569781B1
EP2569781B1 EP11706755.3A EP11706755A EP2569781B1 EP 2569781 B1 EP2569781 B1 EP 2569781B1 EP 11706755 A EP11706755 A EP 11706755A EP 2569781 B1 EP2569781 B1 EP 2569781B1
Authority
EP
European Patent Office
Prior art keywords
load
tap
winding
branch
vacuum switching
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
EP11706755.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2569781A2 (de
Inventor
Wolfgang Albrecht
Christian Hammer
Christian Kotz
Sebastian Rehkopf
Andreas Sachsenhauser
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 EP2569781A2 publication Critical patent/EP2569781A2/de
Application granted granted Critical
Publication of EP2569781B1 publication Critical patent/EP2569781B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • 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
    • H01H9/0038—Tap change devices making use of vacuum switches

Definitions

  • the invention relates to an on-load tap-changer for uninterrupted switching between winding taps of a tapped transformer according to the preamble of the first claim.
  • an on-load tap changer which has a total of four vacuum interrupters per phase.
  • a vacuum interrupter as the main contact and a further vacuum interrupter, in series with a cross-over resistance, are provided as a resistance contact.
  • the main contact of the disconnecting side is first opened, then closes the resistor contact the receiving side, so that between the two winding taps n and n + 1 through the switching resistors limited compensating current flows.
  • Such unwanted surge voltages are, on the one hand, lightning impulse voltages resulting from the impact of lightning in the network.
  • the impulse withstand voltage of the on-load tap-changer is insufficient, it may short-term step short circuit or undesirable breakdown of the ceramic or the vapor shield of vacuum interrupters come in not leading the load current load branch, which can not only cause their long-term damage, but is generally undesirable.
  • DE 31 46 970 A1 discloses a power switching device including four vacuum switches and two current limiting resistors. Two vacuum switches each and a current limiting resistor form a load branch, with the vacuum switches in series and a current limiting resistor connected in parallel with one of the vacuum switches. When you press this load switching device is switched from one load branch to the other load branch. Each load branch is electrically connected to a tap changer. During operation, a current flows through one of the tap changer and a load branch to the neutral point. When switching the load-free tap changer is first actuated, ie the tap changer moves to the adjacent tap to be connected. In the next step, the current is switched from one load branch to the other load branch. This is done by means of the vacuum switch according to a fixed flow chart. The current limiting resistors compensate for the circulating current that occurs during the switching.
  • the object of the invention is to provide an on-load tap-changer of the type mentioned above with high surge voltage resistance and at the same time high switching capacity.
  • the invention is based on the general idea, by additional mechanical switching elements, which are each arranged between the vacuum interrupters and the respective winding tap, with which they are electrically connected, a galvanic isolation, ie potential separation, the vacuum interrupters in each case not the load current leading branch to achieve from the respective winding tapping.
  • any occurring surge voltages are harmless for vacuum interrupters in each case not the load current leading load branch.
  • FIG. 1 the diverter switch of an on-load tap-changer according to the invention is shown in detail.
  • the selector of the on-load tap-changer which performs the powerless selection of the new winding tapping, here n + 1, to which it is to switch before the actual load changeover is not shown.
  • the diverter switch has, as known from the prior art, two load branches A and B, which are in each case electrically connected to a winding tap n or n + 1.
  • the on-load tap changer according to the invention has a main current branch and an auxiliary current branch in each load branch.
  • the first main current branch establishes an electrical connection from the winding tapping n and a vacuum interrupter MSVa to the load derivation LA.
  • the second main current branch establishes an electrical connection from the winding tapping n + 1 via a vacuum interrupter MSVb to the load lead LA.
  • the first auxiliary current branch which is provided parallel to the first main current branch, establishes an electrical connection from the winding tap n via a further vacuum interrupter TTVa and a series-connected at least one first overvoltage resistance Ra for the purpose of dissipating the load.
  • the second auxiliary flow branch which is provided parallel to the second main flow branch, provides an electrical connection from the winding tapping n + 1 via another vacuum interrupter TTVb and a series-arranged at least one second transient resistance Rb for load dissipation.
  • the respective mechanical contacts MDCa, TDCa, MDCb and TDCb are designed as double-pole changeover contacts (reversing contacts). However, they can also be realized as separate, easily interrupting contacts.
  • mechanical permanent main contacts MCa and MCb provided in each load branch, one of which takes over in steady-state operation, the continuous current flow and relieves the vacuum interrupter in the main flow branch of this load branch.
  • the winding tap n is connected; the load current is conducted from this winding tap to the load discharge LA.
  • the vacuum interrupter MSVb is completely separated from the non-connected winding tapping n + 1 by the mechanical contact MDCb arranged according to the invention in its position.
  • the vacuum interrupter TTVb is completely separated from the non-connected winding tapping n + 1.
  • the on-load tap-changer according to the invention thus makes it possible to completely isolate the vacuum interrupters in each branch not leading the load current from the respective winding tap and thus to protect it against surge voltage stresses.

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)
  • Housings And Mounting Of Transformers (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Protection Of Transformers (AREA)
  • Keying Circuit Devices (AREA)
EP11706755.3A 2010-05-08 2011-02-23 Laststufenschalter Active EP2569781B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019948.6A DE102010019948B4 (de) 2010-05-08 2010-05-08 Laststufenschalter
PCT/EP2011/000859 WO2011141081A2 (de) 2010-05-08 2011-02-23 Laststufenschalter

Publications (2)

Publication Number Publication Date
EP2569781A2 EP2569781A2 (de) 2013-03-20
EP2569781B1 true EP2569781B1 (de) 2015-09-16

Family

ID=43983741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706755.3A Active EP2569781B1 (de) 2010-05-08 2011-02-23 Laststufenschalter

Country Status (12)

Country Link
US (1) US9373442B2 (xx)
EP (1) EP2569781B1 (xx)
JP (1) JP5823502B2 (xx)
KR (1) KR101802262B1 (xx)
CN (1) CN103026433B (xx)
BR (1) BR112012027887B1 (xx)
CA (1) CA2798959A1 (xx)
DE (1) DE102010019948B4 (xx)
HK (1) HK1178674A1 (xx)
RU (1) RU2012152955A (xx)
UA (1) UA109130C2 (xx)
WO (1) WO2011141081A2 (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012040926A1 (zh) 2010-09-30 2012-04-05 海洋王照明科技股份有限公司 有机电致发光器件及其制备方法
JP6081082B2 (ja) * 2012-05-18 2017-02-15 株式会社東芝 負荷時タップ切換装置
ES2705325T3 (es) * 2013-08-27 2019-03-22 Reinhausen Maschf Scheubeck Cambiador de tomas en carga, transformador con tomas para la regulación de tensión y procedimiento para la realización de una conmutación en el transformador con tomas
DE102014106322B4 (de) 2014-05-06 2017-02-09 Maschinenfabrik Reinhausen Gmbh Anlage und Verfahren zum Bereitstellen von Blindleistung
DE102014106997A1 (de) * 2014-05-19 2015-11-19 Maschinenfabrik Reinhausen Gmbh Schaltanordnung für einen Stufentransformator sowie Verfahren zum Betreiben einer derartigen Schaltanordnung
DE102014012266A1 (de) 2014-08-22 2016-01-07 Maschinenfabrik Reinhausen Gmbh Schaltanordnung mit zwei Laststufenschaltern, elektrische Anlage mit einer derartigen Schaltanordnung sowie deren Verwendung
JP6483450B2 (ja) * 2015-01-27 2019-03-13 株式会社東芝 負荷時タップ切換装置
DE102015102727A1 (de) * 2015-02-25 2016-08-25 Maschinenfabrik Reinhausen Gmbh Verfahren zum Ändern der aktiven Windungszahl einer Regelwicklung in einer elektrischen Anlage und elektrische Anlage mit einer Regelwicklung
JP6523099B2 (ja) * 2015-08-18 2019-05-29 株式会社東芝 負荷時タップ切換装置および負荷時タップ切換装置の製造方法
EP3285349B1 (en) * 2016-08-16 2019-03-13 ABB Schweiz AG Protecting a transformer comprising a tap changer
DE102018119163A1 (de) * 2018-08-07 2020-02-13 Maschinenfabrik Reinhausen Gmbh Laststufenschalter zur unterbrechungslosen umschaltung zwischen wicklungsanzapfungen eines stufentransformators sowie stufentransformator
DE102022117592A1 (de) * 2022-07-14 2024-01-25 Maschinenfabrik Reinhausen Gmbh Laststufenschalter und Verfahren zur Betätigung eines Laststufenschalters

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146970A1 (de) * 1980-12-01 1982-06-09 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Lastschaltvorrichtung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858095A (en) * 1956-09-28 1961-01-04 Bernhard Jansen Improvements in or relating to tap-changing switches
CH466868A (de) * 1968-02-16 1968-12-31 Siemens Ag Schaltungsanordnung zum unterbrechungslosen Lastumschalten bei Stufentransformatoren
DE2348091C2 (de) * 1973-09-25 1975-08-28 Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg Dreiphasiger zylindrischer Lastumschalter für Stufenschalter von Stufentransformatoren
DE2357209B1 (de) 1973-11-16 1975-02-13 Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg Stufenschalter für Stufentransformatoren
DE2604344A1 (de) 1976-02-05 1977-08-18 Reinhausen Maschf Scheubeck Stufentransformator mit ueberspannungsschutzeinrichtung
US4363060A (en) * 1979-12-19 1982-12-07 Siemens-Allis, Inc. Arcless tap changer for voltage regulator
JP2642727B2 (ja) * 1989-02-17 1997-08-20 株式会社日立製作所 真空スイツチ式負荷時タツプ切換器の回路
DE10050821C1 (de) * 2000-10-13 2002-05-02 Reinhausen Maschf Scheubeck Mechanischer Schaltkontakt
SE527252C2 (sv) * 2004-06-30 2006-01-31 Abb Research Ltd Lastkopplare, förfarande för manövrering av sådan och användning av sådan
DE102005048308B3 (de) * 2005-10-08 2006-11-23 Maschinenfabrik Reinhausen Gmbh Mechanischer Schaltkontakt
JP4764318B2 (ja) 2006-11-29 2011-08-31 株式会社東芝 負荷時タップ切換器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146970A1 (de) * 1980-12-01 1982-06-09 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Lastschaltvorrichtung

Also Published As

Publication number Publication date
JP2013530520A (ja) 2013-07-25
KR20130063505A (ko) 2013-06-14
HK1178674A1 (zh) 2013-09-13
BR112012027887A2 (pt) 2016-09-06
US9373442B2 (en) 2016-06-21
UA109130C2 (xx) 2015-07-27
BR112012027887B1 (pt) 2020-03-10
CN103026433B (zh) 2016-06-22
DE102010019948B4 (de) 2015-06-11
BR112012027887A8 (pt) 2020-01-28
WO2011141081A2 (de) 2011-11-17
KR101802262B1 (ko) 2017-11-28
DE102010019948A1 (de) 2011-11-10
CN103026433A (zh) 2013-04-03
JP5823502B2 (ja) 2015-11-25
EP2569781A2 (de) 2013-03-20
US20130057248A1 (en) 2013-03-07
CA2798959A1 (en) 2011-11-17
WO2011141081A3 (de) 2013-02-07
RU2012152955A (ru) 2014-06-20

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