EP2839493B1 - Laststufenschalter - Google Patents

Laststufenschalter Download PDF

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Publication number
EP2839493B1
EP2839493B1 EP13712755.1A EP13712755A EP2839493B1 EP 2839493 B1 EP2839493 B1 EP 2839493B1 EP 13712755 A EP13712755 A EP 13712755A EP 2839493 B1 EP2839493 B1 EP 2839493B1
Authority
EP
European Patent Office
Prior art keywords
load tap
tap changer
selector
contact
contacts
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.)
Not-in-force
Application number
EP13712755.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2839493A1 (de
Inventor
Alfred Bieringer
Christian Hammer
Rolf Strempel
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 EP2839493A1 publication Critical patent/EP2839493A1/de
Application granted granted Critical
Publication of EP2839493B1 publication Critical patent/EP2839493B1/de
Not-in-force 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
    • H01H9/0005—Tap change devices
    • H01H9/0011—Voltage selector 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
    • 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
    • H01H9/0038—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
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Definitions

  • the present invention relates to an on-load tap changer for uninterrupted switching between different winding taps of a tapped transformer according to the preamble of the first claim.
  • 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.
  • tap changers are based on the principle of the resistance fast circuit for uninterrupted switching from one tapping of a tapped transformer to another constructed such that each solid step contacts electrically connected to the taps of the stepped windings are circularly arranged on one insulating skeleton or cylinders in one or more horizontal planes and by concentric drive shafts actuated rotatable contact bridges are connected.
  • load selectors in which the step selection and the actual load switching are combined, the actuation of the contact bridges takes place abruptly after triggering a wound up by the drive shaft of the switch energy storage, usually spring energy storage.
  • DE 42 37 165 C1 forms the basis for the preamble of claim 1 and, unlike these conventional constructions, describes a tap changer with linear contact actuation, wherein the fixed step contacts extend along a track into the interior of the switch and are connectable by a displaceable switching mechanism, in turn, of the Drive shaft is driven.
  • the vertically displaceable switching mechanism consists of a continuously driven by the drive shaft elevator carriage, which selects the new fixed stage contact, and a windable by the elevator carriage by means of an energy storage driven part, which jumps after triggering jump the elevator carriage and thereby the actual load switching of the previous tap Step winding on the selected new tap completes.
  • the required switching elements are part of the stripping section.
  • WO 2004 088 693 A1 describes a tap changer, which includes as a drive a torque motor that operates both the diverter switch and the fine selector directly.
  • Object of the present invention is therefore to provide an on-load tap-changer, which dispenses with the complex construction of a force accumulator and thus provides a significantly simplified structural design while increasing operational safety.
  • the general inventive idea is to operate both the selector contact unit, as well as the switching means for uninterrupted load switching by means of a common motor drive without the interposition of an energy storage.
  • the vacuum interrupters are arranged directly on a sliding carriage of the respective selector contact unit and the motor drive drives by means of a helical gear to a central threaded spindle, which is in operative connection with a plurality of slides, each slide has a spindle nut and the threaded spindle cooperates with the spindle nut of each slide and converting the rotary motion into a synchronous longitudinal displacement of the sliding carriages such that thereby both the movable selector contacts and the vacuum interrupters are operable.
  • the on-load tap-changer has a transmission module attached to the underside of the transformer cover, which is connected to the on the opposite outer side of the transformer cover arranged motor drive cooperates.
  • the gear module has for this purpose a flange-like sealing module, which is arranged directly on the underside of the transformer cover and releasably connected to the motor drive, in particular screwed, is.
  • the gear module On the transmission module, the entire diverter switch is also attached.
  • the gear module has both the task of holding the on-load tap-changer, as well as seal by means of the sealing module with respect to the outside of the transformer. Twists of the transformer cover during transport of the transformer are thus not transmitted to the on-load tap-changer.
  • a connection flange with overfilled sealing surface on the transformer cover can be dispensed with.
  • this type of proposed attachment provides a simple for the transformer manufacturer mounting the on-load tap-changer within the transformer tank.
  • the movable selector contacts are each received in a contact carrier and cooperate with arranged on a support plate fixed selector contacts, such that the individual fixed selector contacts by a longitudinal displacement of the movable selector contacts together with slide, so the selector contact unit, along the guide rod are connectable.
  • the selector contact unit By the back and forth movement of the selector contact unit, the individual fixed selector contacts are connected and thus go through the control range of the on-load tap-changer.
  • FIG. 1 is an inventive on-load tap-changer 1 is shown in a perspective view, which is arranged directly below a transformer cover, not shown, a stepped transformer, not shown.
  • a step transformer which is well known in the prior art, comprises a transformer tank filled with insulating oil, in which at least one winding is arranged on an iron yoke. This winding is divided into a master and a control winding, at the multiple winding taps are provided, which form the control area.
  • the on-load tap-changer 1 has a transmission module 2 fastened to the underside of the transformer cover, which cooperates with a motor drive 3 arranged on the opposite outer side of the transformer cover.
  • the motor drive 3 can be formed for example as a commercial stepper motor.
  • the transmission module 2 comprises a flange-like sealing module 4, which is arranged directly on the underside of the transformer cover and releasably connected to the motor drive 3, in particular screwed, is. At the transmission module 2 so that the entire on-load tap-changer 1 is fixed.
  • the gear module 2 fulfills both the task of holding the on-load tap-changer 1, as well as hermetically sealing by means of the sealing module 4 with respect to the outside of the transformer. Twists of the transformer cover during transport of the transformer are not transmitted to the on-load tap-changer 1.
  • the on-load tap-changer 1 provides vacuum interrupters 6.1 ... 6.6, with two vacuum interrupters 6.1 and 6.2, or 6.3 and 6.4, or 6.5 and 6.6 each associated with one phase of the on-load tap changer 1 and with a corresponding selector contact unit 7.1 ... 7.3 interact.
  • the vacuum interrupters 6.1 ... 6.6 are known from the prior art switching means with a movable switching contact 8.1 ...
  • Each voter contact unit 7.1 ... 7.3 each includes a plurality of connectable fixed selector contacts 10.1 ... 10.5, which are electrically connected to the winding taps of the control winding of the tapped transformer, a contact carrier 11.1 ... 11.3, each with two spring-mounted, movable selector contacts 12.1 and 12.2 and in each case two vacuum interrupters 6.1... 6.6, which are arranged directly on a corresponding sliding carriage 13.1... 13.3 of the respective selector contact unit 7.1.
  • middle positions in which a movable selector contact, for example, the movable selector contact 12.1, the first fixed selector contact, for example, the fixed selector contact 10.1, and the other movable selector contact, for example movable selector contact 12.2, the second fixed selector contact adjacent to the first fixed selector contact, for example, the fixed selector contact 10.2, connected, as a stationary operating position the on-load tap-changer 1 permissible.
  • a movable selector contact for example, the movable selector contact 12.1
  • the first fixed selector contact for example, the fixed selector contact 10.1
  • the other movable selector contact for example movable selector contact 12.2
  • the second fixed selector contact adjacent to the first fixed selector contact for example, the fixed selector contact 10.2
  • each voter contact unit 7.1, 7.2 and 7.3 is connected to a separate phase, ie winding, of the tapped transformer.
  • the contact carrier 11.1 ... 11.3 of each phase is mechanically fixed to a slide 13.1 ... 13.3 and forms together with this a structural unit.
  • the sliding carriage 13.1... 13.3 is received on a rail 14 and on a threaded spindle 15, which is arranged parallel to the rail 14, in such a way that the individual fixed selector contacts 10.1 ... 10.5 are displaced by a longitudinal displacement of the movable contacts 12.1 together sliding carriage 13.1 ... 13.3 along the rail 14 are connected.
  • the on-load tap changer 1 according to the invention, the switching means for uninterrupted switching, so the vacuum interrupters 6.1 ... 6.6, directly to the corresponding slide 13.1 .. 13.3 of the respective selector contact unit 7.1 ... 7.3 arranged and formed along this along the threaded spindle 15 movable ,
  • Each dial contact unit 7.1 ... 7.3 has its own, not visible in this illustration, spindle nut in the corresponding slide 13.1 ... 13. 3 arranged so that the selector contact units 7.1 ... 7.3 so along the threaded spindle 15 synchronously are formed displaceable.
  • the threaded spindle 15 is assembled from several sections and has between the corresponding sections each one of electrically insulating material molded coupling tube 17.1 ... 17.2.
  • an angle gear 18 is provided to pass the rotational movement of the motor drive 3 on the threaded spindle 15. Between the motor drive 3 and the angle gear 18, an insulating shaft 19 is disposed of dielectric material, which initiates the rotational movement of the motor drive 3 in the angle gear 18.
  • the fixed contacts of the arranged on the corresponding slide 13.1 ... 13.3 vacuum interrupters 6.1 ... 6.6 are each screwed by means of strands 20.1 ... 20.6 on the support plate 5 and electrically connected to not shown overshoot reactors or Kochschaltwideretcn. Overload reactors are designed according to the reactor switching principle and switching resistors according to the resistance switching principle.
  • 6.6 are with a rocker arm assembly 21.1 ... 21.6 in mechanical Operative connection, each having a roller 22.1 ... 22.6.
  • the movable switching contacts 8.1 ... 8.6 of the vacuum interrupters 6.1 ... 6.6 are electrically connected to the movable selector contacts 12.1 ... 12.2 of the associated phase.
  • the corresponding rollers 22.1 ... 22.6 roll in a longitudinal displacement of the sliding carriage 13.1 ... 13.3 on the profiling of a link rail 23.1 ... 23.3. along, so that so that the respective rocker arm assembly 21.1 ... 21.6 the corresponding movable switching contact 8.1 ... 8.6 of the associated vacuum interrupter 6.1 ...
  • the fixed selector contacts 10.1 ... 10.5, of which one sees in this illustration only the fixed selector contacts 10.3 ... 10.5, are here arranged directly on the support plate 5 and on the opposite side not shown here, the support plate 5 electrically to the corresponding winding taps of the control winding of the tapped transformer connected.
  • the on-load tap-changer 1 according to the invention can thus be used both according to the reactor switching principle and according to the resistance rapid-switching principle.
  • 9 stationary operating positions are allowed at fixed contactors 10.1 ... 10.5 shown here according to the reactor switching principle, while only 5 stationary operating positions are permitted in a constructed according to the resistance switching principle according to the invention on-load tap-changer.
  • the on-load tap-changer according to the invention can be used particularly advantageously on distribution transformers for voltage regulation of local networks.

Landscapes

  • Housings And Mounting Of Transformers (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Slide Switches (AREA)
EP13712755.1A 2012-04-20 2013-03-25 Laststufenschalter Not-in-force EP2839493B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202012101476U DE202012101476U1 (de) 2012-04-20 2012-04-20 Laststufenschalter
PCT/EP2013/056276 WO2013156266A1 (de) 2012-04-20 2013-03-25 Laststufenschalter

Publications (2)

Publication Number Publication Date
EP2839493A1 EP2839493A1 (de) 2015-02-25
EP2839493B1 true EP2839493B1 (de) 2016-10-19

Family

ID=48013975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13712755.1A Not-in-force EP2839493B1 (de) 2012-04-20 2013-03-25 Laststufenschalter

Country Status (10)

Country Link
US (1) US20150303006A1 (zh)
EP (1) EP2839493B1 (zh)
JP (1) JP2015515138A (zh)
KR (1) KR20150003844A (zh)
CN (1) CN104246950B (zh)
DE (1) DE202012101476U1 (zh)
HK (1) HK1202979A1 (zh)
RU (1) RU2014146590A (zh)
UA (1) UA116202C2 (zh)
WO (1) WO2013156266A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106653426B (zh) * 2017-01-12 2018-08-17 济南爱迪电气设备有限公司 一种配电变压器专用有载调压开关
CN112290682B (zh) * 2020-10-30 2022-05-13 中国人民解放军火箭军工程大学 一种配电网网络重构的开关分组方法及系统
EP4123677A1 (en) * 2021-07-23 2023-01-25 Hitachi Energy Switzerland AG On-load tap changer with positioning device and method for assembling an on-load tap changer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806282C2 (de) 1978-02-15 1980-04-10 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Lastumschalter für Stufenschalter von Stufentransformatoren
ATE136684T1 (de) * 1992-07-16 1996-04-15 Reinhausen Maschf Scheubeck Stufenschalter
DE4237165C1 (de) 1992-11-04 1994-03-17 Reinhausen Maschf Scheubeck Einpoliger Stufenschalter mit linearer Kontaktbetätigung für einen Stufentransformator
FR2711839B1 (fr) * 1993-10-25 1996-02-02 Menini Manfred Interrupteur de puissance commandé.
DE19847745C1 (de) * 1998-10-16 2000-01-05 Reinhausen Maschf Scheubeck Stufenschalter
DE19855860C1 (de) 1998-12-03 2000-02-17 Reinhausen Maschf Scheubeck Kraftspeicher für einen Stufenschalter
US7145760B2 (en) * 2000-12-15 2006-12-05 Abb Technology Ltd. Tap changer monitoring
BRPI0408538A (pt) * 2003-04-03 2006-03-07 Reinhausen Maschf Scheubeck chave de contatos múltiplos
US7053327B2 (en) * 2004-10-26 2006-05-30 Eaton Corporation Apparatus and method for use in circuit interrupters
CN201134380Y (zh) * 2007-12-26 2008-10-15 沈阳华利能源设备制造有限公司 一种72.5kv三工位开关
DE102009035699A1 (de) * 2009-07-30 2011-02-10 Maschinenfabrik Reinhausen Gmbh Anordnung eines Stufenschalters an einem Regeltransformator
DE102009043171B4 (de) 2009-09-26 2014-11-20 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Vakuumschaltröhren

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
RU2014146590A (ru) 2016-06-10
DE202012101476U1 (de) 2013-07-23
HK1202979A1 (zh) 2015-10-09
CN104246950B (zh) 2017-02-22
JP2015515138A (ja) 2015-05-21
EP2839493A1 (de) 2015-02-25
KR20150003844A (ko) 2015-01-09
CN104246950A (zh) 2014-12-24
US20150303006A1 (en) 2015-10-22
UA116202C2 (uk) 2018-02-26
WO2013156266A1 (de) 2013-10-24

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