EP4042460A1 - Changeur de prises en charge - Google Patents

Changeur de prises en charge

Info

Publication number
EP4042460A1
EP4042460A1 EP20771846.1A EP20771846A EP4042460A1 EP 4042460 A1 EP4042460 A1 EP 4042460A1 EP 20771846 A EP20771846 A EP 20771846A EP 4042460 A1 EP4042460 A1 EP 4042460A1
Authority
EP
European Patent Office
Prior art keywords
module
shaft
load tap
changer
shafts
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.)
Pending
Application number
EP20771846.1A
Other languages
German (de)
English (en)
Inventor
Thomas Schuster
Georg Kellendorfer
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 EP4042460A1 publication Critical patent/EP4042460A1/fr
Pending legal-status Critical Current

Links

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
    • H01H9/0027—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
    • H01H9/0011—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
    • H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase 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
    • H01H2009/0094—Details of rotatable shafts which are subdivided; details of the coupling means thereof
    • 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 load switching between different winding taps of a tap transformer.
  • On-load tap-changers are known from the prior art and usually consist of a diverter switch and a selector.
  • the diverter switch with the vacuum interrupters and the transition resistors is arranged in a vessel.
  • the voter is made up of a large number of bars arranged in a circle. On these bars, contacts are arranged in different levels, which serve as connections for the individual stages of the control windings. Inside the voter, two voter arms are attached to a switching column. These make contact with the contacts on the bars. Diverter switch and selector are connected to one another via a gearbox.
  • the on-load tap-changer is actuated by means of a drive which, on the one hand, pulls up a spring energy store to operate the diverter switch, and, on the other hand, moves the selector arms to preselect the contacts to be connected.
  • the contacts and switching means of all three phases are always actuated simultaneously in both the diverter switch and the selector. This inevitably leads to torque peaks, since the same contacts of each phase have to be actuated at the same time.
  • the drive, spring accumulator and gear must be designed in such a way that they can cope with the torque peaks.
  • the object of the invention is to create an on-load tap-changer which generates significantly smaller torque peaks during actuation, has a simple and compact design and at the same time ensures reliable operation.
  • the invention proposes an on-load tap-changer for uninterrupted load switching between different winding taps of a tapped transformer, comprising: a first module with a first module shaft; a second module having a second module shaft, wherein: the first module shaft actuates the first module; the second module shaft actuates the second module; the first and second module shafts are mechanically coupled to one another in such a way that the first module shaft drives the second module shaft and the second module is offset in time to the first module is operated.
  • Each module can be designed in any desired manner as required and can comprise a module shaft, for example.
  • the first module shaft of the first module is mechanically coupled to the second module shaft of the second module.
  • the module shafts are mechanically connected to one another in an offset manner in such a way that the individual modules are actuated offset to one another. In other words, the two module shafts begin to rotate at the same time, but their effect (opening and closing of vacuum interrupters) on the elements in the modules is delayed.
  • the module shafts can be connected to one another in any way as required, for example by means of insulating rods, insulating shafts or chains.
  • the offset between the modules and in particular the module shafts can be designed in any manner as required, for example as offset connecting pins on the module shafts and identically designed insulating shafts or insulating shafts with offset receptacles and identical module shafts. How the offset between the module shafts is ultimately implemented is irrelevant.
  • the diverter switch can be designed in any manner as required and, for example, comprise at least two or more modules.
  • the modules are each assigned to a phase of a step transformer.
  • Each module can be designed in any desired manner as required and, for example, comprise at least one diverter switch and a selector.
  • the Diverter switch can include at least one switching element and one current-limiting element.
  • the at least one switching element can be designed as a vacuum interrupter or a simple mechanical switch.
  • the current-limiting element is preferably a resistor, a throttle or a current-dependent resistor.
  • the voter has at least one voter arm, preferably two voter arms as fine selectors and / or one preselector arm as preselector.
  • Each module shaft can be designed in any way as required and, for example, have a connecting pin, bolt, feather key or any other connecting element at each end.
  • the connecting pins are not axially parallel and are preferably offset from one another by a maximum of 15 degrees.
  • the connecting pins, bolts or keys can only be inserted on one side or extend through the entire module shaft.
  • Each module shaft can be designed in any manner as required and, for example, have a first connecting pin at a first end and a second connecting pin at a second end.
  • the first connecting pin can run along a first axis A and the second connecting pin can run along a second axis B, the axes A and B not being axially parallel and preferably being offset by an angle of a maximum of 15 degrees.
  • the drive can be designed in any manner as required and, for example, comprise at least one motor and / or a transmission.
  • the motor can be designed as a synchronous motor with a multiturn absolute encoder or as a DC motor with microswitches.
  • module shafts and the insulating shafts are connected to several coupling shells via couplings and / or couplings.
  • a motor is connected directly to the drive shaft or indirectly via a gear, angular gear or linkage to the insulating shaft or the first modular shaft of the on-load tap-changer.
  • FIG. 1 shows a first embodiment of an on-load tap-changer
  • 2b shows a front view of a module shaft
  • 3 shows several module shafts of an on-load tap-changer according to the invention
  • FIG. 1 shows a schematic structure of an on-load tap-changer 1 according to the invention.
  • This has a first module 20, a second module 40 and a third module 60.
  • Each of the modules 20, 40, 60 is assigned to a phase of a step transformer.
  • the first module 20 has a first module shaft 22.
  • the first module shaft 22 is connected or coupled to a drive 2 at its first end 23.
  • the drive 2 is designed as a motor drive with or without a gear and is preferably mechanically connected to the first end 23 of the first module shaft 22 via a first insulating shaft 21.
  • the first module 20 has a diverter switch 30 and a selector 35.
  • the diverter switch 30 and in particular its vacuum interrupters are actuated directly via the first module shaft 22.
  • two cam disks 32 sit on the first module shaft 22, which open and close the vacuum interrupters when they rotate. Furthermore, a first bevel gear 36 is arranged on the first module shaft 22, which drives a second bevel gear 37, which in turn actuates the individual selector arms of the selector 35.
  • the diverter switch 30 and the selector 35 are thus operated in a specific sequence; the first module 20 of the on-load tap-changer 1 is actuated.
  • the on-load tap changer 1 has a second module 40 and a third module 60.
  • the three modules 20, 40, 60 are constructed identically to one another.
  • the three modules are also mechanically coupled to one another via a second and a third insulating shaft 41, 61.
  • the drive 2 drives the first module 20 via the first insulating shaft 21, the first module 20 drives the second module 40 via the second insulating shaft 41 and the second module 40 drives the third module 60 via the third insulating shaft 61.
  • the second and third modules 40, 60 each have a diverter switch 50, 70, a selector 55, 75 and module shafts 42, 62.
  • the respective selectors 55, 75 are driven via respective bevel gears 56, 57, 76, 77.
  • FIG. 2a shows a detailed view of the first module shaft 22, which has a first connecting pin 24 at its first end 23.
  • the first module shaft 22 is connected to the drive 2 via this first connecting pin 24, for example via a first insulating shaft 21, connected.
  • the first module shaft 22 has a second connecting pin 26 at its second end 25.
  • the second connecting pin 26 is not arranged axially parallel to the first connecting pin 24 on the module shaft 22.
  • the second connecting pin 26 is arranged offset from the first connecting pin 24 by a few degrees.
  • bolts, feather keys or any other connecting elements can be used.
  • the connecting pin can protrude only on one side or extend from one side to the second, opposite side.
  • FIG. 2b shows a front view of the module shaft 22.
  • Axis A is intended to show the alignment of the first connecting pin 24.
  • Axis B shows the alignment of the second connecting pin 26.
  • the axes A and B are offset from one another at an angle W1 of preferably a maximum of 15 degrees. If a second module shaft 42 were to be placed behind the first module shaft 22 and connected to it, the first connecting pin 44 of the second module shaft 42 would run axially parallel to the axis B of the second connecting pin 26 of the first module shaft 22.
  • Each module shaft 22, 42, 62 has the same design, i.e. the second connecting pin 26, 46, 66 is arranged offset to the respective first connecting pin 24, 44, 64.
  • Axis C shows the alignment of the second connecting pin 46, not shown here, of the second module shaft 42.
  • the angle W2 between the axes B and C is identical to the angle W1 between the axes A and B.
  • FIG. 3 shows a detailed view of two module shafts connected to one another, in particular the first module shaft 22 and the second module shaft 42.
  • the first connection pin 24 at the first end 23 of the first module shaft 22 is offset from the second connection pin 26 at the second end 25.
  • the first end 23 of the first module shaft 22 is connected to a drive 2 via a first insulating shaft 21.
  • the connection between the first insulating shaft 21 and the first module shaft 22 is realized by means of a coupling 19, which preferably has two coupling shells. However, any type of coupling can be used.
  • the second end 25 of the first module shaft 22 is connected to the first end 43 of the second module shaft 42 via a second insulating shaft 41.
  • the first connecting pins 24, 44 of the respective module shafts 22, 42 are connected to one another in an offset manner.
  • the drive 2 begins to rotate or drive the first insulating shaft 21, the other shafts also rotate with it.
  • the actuation of the modules 20, 40, 60 takes place offset, since the cam disks and also the first bevel gear of the second module 40 and third module 60 are arranged offset to the cam disks and the first bevel gear of the first module 20.
  • the insulating shafts 41, 61 are configured identically here, i.e. the couplings 19 at the respective ends are the same.
  • the insulating shafts can also have staggered couplings at the respective ends.
  • An offset mechanical coupling of the modules is also achieved in this way. The modules are driven simultaneously and together, but are actuated with a time delay.
  • FIG. 4 shows a detailed view of one of the module shafts 20, 40, 60, in particular the first module shaft 20, the second and third module shafts 40, 60 being constructed identically.
  • Two cam disks 32 for actuating the vacuum interrupters and a first bevel gear 36 for actuating the selector 35 are arranged on the module shaft 20.
  • the diverter switch 30 and the selector 35 are actuated within a 360 degree rotation of the module shaft 20.
  • individual actions in the on-load tap-changer such as opening or closing the vacuum interrupters of a switching sequence, are carried out at a specific point in time.
  • the actions in the second module 40 take place correspondingly slightly offset to the first module 20;
  • the modules 20, 40, 60 are constructed identically.
  • the second module 40 is driven at the same time as the first module 20, the actual actuation of the second module 40 (opening or closing of the vacuum interrupters) takes place at a different time.
  • the insulating shafts could also have offset receptacles at the two ends.
  • the module shafts are also connected to one another in a mechanically offset manner.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un changeur de prises en charge (1) pour une commutation de charge ininterrompue, comprenant : un premier module (20) ayant un premier arbre de module (22) ; un second module (40) ayant un second arbre de module (42) ; le premier arbre de module (22) actionne le premier module (20) ; le second arbre de module (42) actionne le second module (40) ; les premier et second arbres de module (22, 42) sont accouplés mécaniquement l'un à l'autre de telle sorte que le premier arbre de module (22) entraîne le second arbre de module (42) et le second module (40) est actionné avec un retard temporel par rapport au premier module (20).
EP20771846.1A 2019-11-12 2020-09-14 Changeur de prises en charge Pending EP4042460A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019130460.1A DE102019130460A1 (de) 2019-11-12 2019-11-12 Laststufenschalter
PCT/EP2020/075629 WO2021094013A1 (fr) 2019-11-12 2020-09-14 Changeur de prises en charge

Publications (1)

Publication Number Publication Date
EP4042460A1 true EP4042460A1 (fr) 2022-08-17

Family

ID=72474330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20771846.1A Pending EP4042460A1 (fr) 2019-11-12 2020-09-14 Changeur de prises en charge

Country Status (7)

Country Link
US (1) US20220415587A1 (fr)
EP (1) EP4042460A1 (fr)
JP (1) JP2022554289A (fr)
CN (1) CN114651316A (fr)
AU (1) AU2020381819A1 (fr)
DE (1) DE102019130460A1 (fr)
WO (1) WO2021094013A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022109185A1 (de) * 2022-04-14 2023-10-19 Maschinenfabrik Reinhausen Gmbh Laststufenschalter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157814A (en) * 1936-02-13 1939-05-09 Gen Electric Polyphase transformer tap-changing mechanism
DE724502C (de) * 1936-02-13 1942-08-28 Aeg Lastschalteranordnung fuer mehrphasige Stufentransformatoren
AT224219B (de) * 1960-07-08 1962-11-12 Bbc Brown Boveri & Cie Kraftspeicher
US3421073A (en) * 1966-10-07 1969-01-07 Central Transformer Corp Voltage tap changing apparatus
DE19743864C1 (de) * 1997-10-04 1999-04-15 Reinhausen Maschf Scheubeck Stufenschalter
DE29814184U1 (de) * 1998-08-07 1999-09-23 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Wellengelenk
DE102010007535B4 (de) * 2010-02-11 2017-12-21 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Freilaufelement
DE202010011521U1 (de) * 2010-08-18 2011-11-23 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
DE102011013749B4 (de) * 2011-03-12 2015-03-19 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
MX2013011088A (es) * 2011-03-27 2014-05-01 Abb Technology Ag Cambiador de toma con un sistema de monitoreo mejorado.
DE102012104378B4 (de) * 2012-05-22 2015-09-17 Maschinenfabrik Reinhausen Gmbh Anordnung von Vakuumschaltröhren bei einem Lastumschalter
RU2016111114A (ru) * 2013-08-27 2017-10-04 Машиненфабрик Райнхаузен Гмбх Переключатель ступеней нагрузки, ступенчатый трансформатор для регулировки напряжения и способ выполнения переключения в ступенчатом трансформаторе

Also Published As

Publication number Publication date
JP2022554289A (ja) 2022-12-28
US20220415587A1 (en) 2022-12-29
DE102019130460A1 (de) 2021-05-12
AU2020381819A1 (en) 2022-06-23
CN114651316A (zh) 2022-06-21
WO2021094013A1 (fr) 2021-05-20

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