EP2845212B1 - Sélecteur pour commutateur à gradins - Google Patents

Sélecteur pour commutateur à gradins Download PDF

Info

Publication number
EP2845212B1
EP2845212B1 EP13719283.7A EP13719283A EP2845212B1 EP 2845212 B1 EP2845212 B1 EP 2845212B1 EP 13719283 A EP13719283 A EP 13719283A EP 2845212 B1 EP2845212 B1 EP 2845212B1
Authority
EP
European Patent Office
Prior art keywords
selector
honeycomb segments
contact
contacts
preselector
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
EP13719283.7A
Other languages
German (de)
English (en)
Other versions
EP2845212A1 (fr
Inventor
Christian Pircher
Max Weidinger
Thomas Schuster
Moritz BENGLER
Robert Hiltner
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 EP2845212A1 publication Critical patent/EP2845212A1/fr
Application granted granted Critical
Publication of EP2845212B1 publication Critical patent/EP2845212B1/fr
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
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing
    • 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
    • H01H9/0016—Contact arrangements for tap changers
    • 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
    • H01H9/0016—Contact arrangements for tap changers
    • H01H2009/0022—Mounting of the fixed contacts or taps on cylindrical wall of oil vessel containing the tap changer; Details of screening
    • 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
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit

Definitions

  • the invention relates to a selector for a tap changer for uninterrupted switching between winding taps of a tapped transformer.
  • Tap changers have been known in the art for many years in numerous designs. They regularly have a selector and a diverter switch.
  • the selector is used for the powerless preselection of the new winding tap to be switched to below.
  • the diverter switch is used for the actual - fast - uninterrupted switching from the previous to the new, no-load preselected winding tap.
  • selector for tap changer will be from the DE19836463C1 known.
  • the tap changer has a switching shaft on which a plurality of actuating elements arranged parallel to one another are fastened.
  • the actuators are designed as cams with projections.
  • Parallel to the switching shaft mechanical switching elements are arranged, which are actuated via the projections of the cams.
  • the mechanical switching elements are connected between the selector and the vacuum interrupters of the diverter switch. By operating the mechanical switching elements, the vacuum interrupters are to be protected in the non-load current leading load branch from possibly occurring surge voltages.
  • a switching arrangement for a diverter is known.
  • This diverter which serves for voltage or currentless switching between winding taps, has two integrally formed, arranged in two levels one above the other fixing elements.
  • the fixing elements in the outer ring portion openings for the passage of contact bars.
  • each fixing element has a sleeve portion arranged in the middle, in which a switching shaft is mounted.
  • a step switch for transformers which consists of a selector and a load switch.
  • the selector is used for the power-less preselection of tap tap and the load switch for fast switching under voltage.
  • the selector includes two rotary contacts which connect the taps of the transformer with one slip ring each and are driven by a shaft.
  • the preselection is arranged constructively next to the actual fine selector (selector).
  • the structural implementation is carried out by means of cylinder segments or a framework of Isolierstoffstäben to which the movable and fixed preselector contacts are attached.
  • the prior art in such selectors for tap changers can therefore be summarized as follows:
  • the individual fixed selector contacts are arranged in a plurality of horizontal planes circular around a rotatable drive shaft around.
  • the arrangement of the selector contacts and their fixation is carried out either on individual rods of insulating material forming a cage stand, or in the wall of a Isolierstoffzylinders, or even in the wall of individual Isolierstoffzylindersegmenten, which also put together a circular arrangement.
  • the positioning of the fixed selector contacts is carried out vertically one above the other - in a Isolierstoffgerüst along the rods as support elements - in several levels.
  • Different divisions of tap changer, d. H. the number of possible winding taps to be connected and thus the number of fixed selector contacts are realized by the different number of individual insulating rods, the diameter of the insulating cylinder or the different number of horizontal planes.
  • control range is done via preselector which are designed as a coarse selector, Wender or a combination of both. These parts also consist of Isolierstoffzylindersegmenten or Isolierstoffstäben which are arranged next to the fine selector.
  • the prior art has various disadvantages overall.
  • the main disadvantage is that different design configurations of the selector are required for different numbers of connectable winding taps of the associated tapped transformer and thus different numbers of fixed voter contacts.
  • the diameter of the entire arrangement is greatly increased. It is also not possible to position these preselections below the fine selector in order to meaningfully use any available space.
  • tap changers can not be freely selected, whether a selection in the form of a coarse selector or a Wenders next to or below the fine selector (selector) is arranged.
  • the object of the invention is to eliminate these disadvantages and to provide a selector with an optional selection, which is modular and a reduction in complexity while covering the same variance, d.
  • the invention is based on the general idea, a generic voters of the modular form from always uniform, mutually offset next to each other and arranged honeycomb segments, is constructed.
  • the essential components for such a selector are honeycomb segments which are connected to one another via contacts, contact holders and bolts and are thereby surrounded by a shield.
  • the selector according to the invention offers numerous advantages. First of all, only a few different equal parts are required for its production. With these can be realized by the construction by means of the honeycomb segments with the same diameter different lengths and heights of the voter. In other words, the voter according to the invention is adaptable with low complexity to widely varying numbers of winding taps to be controlled and thus required fixed voter contacts.
  • Another advantage of the invention is that gaps remain in each horizontal plane between the connecting regions of the honeycomb segments and the contacts arranged there. Since the selector according to the invention, as usual, flows around and flows through the insulating oil in the transformer boiler, so that oil paths are realized both horizontally and vertically between all fixed selector contacts; This optimization of the insulation distances leads to a high dielectric strength with a compact design.
  • honeycomb segments also make it possible to arrange selection in the simplest manner either next to or below the fine selector and to connect them together. This allows more flexible response to given space.
  • the same parts can be used.
  • the fine selector can be halved in height compared to the prior art. Due to the honeycomb structure there are no direct rod sections between the planes, whereby the dielectric strength is increased.
  • FIG. 1 shows a honeycomb segment according to the invention 1.
  • the honeycomb segment 1 is preferably made of a thermoplastic having a high dielectric strength such as PPA.
  • the honeycomb segment 1 has four receiving areas 2 for contacts 3, contact holders 4 and bolts 5.
  • each receiving area 2 has at least one contact recess 3.1 for the contact 3, at least one contact holder recesses 4.1 for the contact holder 4 and at least one bore 5.1 for the bolt 5.
  • the contact holder 4 also have holes 4.2, which with the holes 5.1 of the honeycomb segments. 1 correspond.
  • FIG. 2 shows a honeycomb segment 1 are arranged at the contact holder 4 to the contacts 3 in the receiving areas 2.
  • the contact holder 4 can be pushed onto the contacts 4.
  • recesses, holes or other geometric structures on the contact can help to form a positive connection between contact 3 and contact holder 4 during encapsulation.
  • the contact holder 4 is preferably made of a thermoplastic having a high dielectric strength. The number and thickness of the contact holder 4 can be varied as needed.
  • the contacts 3 and attached to these contact holder 4 can be positioned in the receiving areas 2.
  • FIG. 3 shows five interconnected honeycomb segments 1, which form a ring with three levels for possible contacts 3.
  • the two upper contact levels are assigned to one phase and provide ten contacts 3 available.
  • the contact 3 When connecting the honeycomb segments 1, the contact 3 are first used with the contact holders 4 in the receiving areas 2. Thereafter, another honeycomb segment 1, with an empty receiving area 2, is inserted into the receiving area 2 of the first honeycomb segment 1 equipped with contacts 3 and contact holders 4. Since the bores 5.1 of both honeycomb segments 1 correspond to the bores 4.2 of the contact holders 4, all parts can be firmly connected to one another by means of the bolts 5. The bolts 5 are thereby led out and locked first through the holes 5.1 of the honeycomb segments 1, then through the contact holder 4 and finally through the holes 5.1 on the other side.
  • honeycomb segments 1 can be connected only with the aid of the bolt 5. This is advantageous when higher distances between the individual contacts 3 must be maintained at high voltages.
  • FIG. 4 a contact shield 6 is shown, with the help of which the dielectric strength can be additionally increased.
  • This contact shield is formed in two parts in this embodiment. During assembly, both parts are positioned one above the other and connected with the help of integrated snap hooks. Other joining methods are conceivable, ie glue, screw, etc.
  • an inventive selector 7 is shown in the assembled state. This is composed of a plurality of honeycomb segments 1, which at the receiving areas. 2 are composed. Clearly visible are the different levels of contact with the different contacts 3. With only a few parts can thus inventively and modular produce a complete selector 7. Inside the selector 7 is a switching column 8 with Ableitringen 9 and contact bridges with a drive train (not shown here) shown. In the upper part of the selector 7, interconnected honeycomb segments 1 without contacts 3 can be seen.
  • a selector 7 is shown, which is divided into fine selector 10 and 11 preselector.
  • the fine selector 10 and the preselector 11 are made of identical honeycomb segments 1, which are connected to each other in the same way.
  • An intermediate gear 12 separates the located inside the contact bridges and drive trains.
  • FIG. 7 a selector 7 is shown in the fine selector 10 and 11 preselector are arranged side by side. Again, uniform honeycomb segments 1 are always used for both units.
  • a voter can be built in almost any variety of variants from only a few different components.
  • assembling a contact 3 is not necessary to connect the honeycomb segments 1 with each other.
  • the honeycomb structure with its horizontal and vertical spaces allows a particularly good circulation of the surrounding insulating medium, usually insulating oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Protection Of Transformers (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (10)

  1. Sélecteur destiné à un commutateur à gradins pour permettre la commutation sans interruption entre deux prises d'enroulement d'un transformateur à gradins, dans lequel,
    des contacts fixes sont montés selon un cercle dans plusieurs plans horizontaux sur un boîtier de sélecteur,
    à la partie interne du boîtier de sélecteur est monté un arbre d'entraînement rotatif s'étendant centralement qui porte dans chaque plan horizontal des contacts fixes au moins un contact mobile pour permettre son branchement, caractérisé en ce que
    le boîtier de sélecteur est constitué de plusieurs segments alvéolaires (1),
    les segments alvéolaires (1) sont situés côte à côte selon un cercle dans un plan horizontal,
    plusieurs segments alvéolaires (1) situés selon un cercle dans un plan sont montés verticalement les uns sur les autres,
    les segments alvéolaires (1) comprennent des zones de réception (2) et peuvent être reliés les uns au-dessous des autres par l'intermédiaire de ces zones de réception (2) de façon à former, lors de la liaison d'au moins deux segments alvéolaires (1) une liaison par la forme entre au moins deux zones de réception (2) des différents segments alvéolaires (1).
  2. Sélecteur conforme à la revendication 1,
    caractérisé en ce que
    les zones de réception (2) comportent au moins un perçage (5.1), et, lors de la liaison de deux segments alvéolaires (1) au moins un goujon (5) est enfiché au travers des perçages (5.1) pour permettre la fixation.
  3. Sélecteur conforme à la revendication 2,
    caractérisé en ce que
    les zones de réception (2) comprennent au moins un évidement porte-contact (4.1),
    un porte-contact (4) est sélectivement positionné dans l'évidement porte-contact (4.1) par au moins un perçage (4.2) au travers duquel le goujon (5) peut être enfiché, et
    un contact fixe (3) peut être monté sur le porte-contact (4).
  4. Sélecteur conforme à l'une des revendications 1 à 3,
    caractérisé en ce que
    le sélecteur (7) comprend un sélecteur fin (10) et un présélecteur (11).
  5. Sélecteur conforme à la revendication 4,
    caractérisé en ce que
    le sélecteur fin (10) et le présélecteur (11) sont montés verticalement l'un au-dessus de l'autre ou horizontalement côte à côte.
  6. Sélecteur conforme à la revendication 4 ou 5,
    caractérisé en ce que
    le présélecteur (11) est réalisé sous la forme d'un inverseur ou d'un sélecteur à gradins grossier.
  7. Sélecteur conforme à l'une des revendications 4 à 6,
    caractérisé en ce que
    le sélecteur fin (10) et le présélecteur (11) sont séparés l'un de l'autre à la partie interne par une transmission intermédiaire (12).
  8. Sélecteur conforme à l'une des revendications 1 à 7,
    caractérisé en ce que
    le sélecteur (7) comprend cinq, six ou sept segments alvéolaires (1) par phase.
  9. Sélecteur conforme à l'une des revendications 3 à 8,
    caractérisé en ce qu'
    une protection des contacts (6) est montée autour des contacts (3).
  10. Sélecteur conforme à l'une des revendications 1 à 9,
    caractérisé en ce que
    le segment alvéolaire (1) est réalisé en un matériau thermoplastique tel que par exemple le PPA.
EP13719283.7A 2012-05-03 2013-04-19 Sélecteur pour commutateur à gradins Not-in-force EP2845212B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103855.4A DE102012103855B4 (de) 2012-05-03 2012-05-03 Wähler für einen Stufenschalter
PCT/EP2013/058192 WO2013164211A1 (fr) 2012-05-03 2013-04-19 Sélecteur pour commutateur à gradins

Publications (2)

Publication Number Publication Date
EP2845212A1 EP2845212A1 (fr) 2015-03-11
EP2845212B1 true EP2845212B1 (fr) 2016-03-30

Family

ID=48224799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13719283.7A Not-in-force EP2845212B1 (fr) 2012-05-03 2013-04-19 Sélecteur pour commutateur à gradins

Country Status (7)

Country Link
US (1) US9305719B2 (fr)
EP (1) EP2845212B1 (fr)
CN (1) CN104272415B (fr)
DE (1) DE102012103855B4 (fr)
HK (1) HK1204825A1 (fr)
UA (1) UA114317C2 (fr)
WO (1) WO2013164211A1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357279B (fr) * 1971-11-02 1973-06-18 Asea Ab
US4532386A (en) * 1983-10-05 1985-07-30 Rte Corporation Dual voltage switch
DE19836463C1 (de) 1998-08-12 1999-10-21 Reinhausen Maschf Scheubeck Stufenschalter mit einem Vorwähler
CN2755750Y (zh) * 2004-11-04 2006-02-01 江苏华鹏变压器有限公司 变压器无励磁分接开关
CN1841583A (zh) * 2005-03-28 2006-10-04 上海华明电力设备制造有限公司 组合式有载分接开关
DE102007023124B3 (de) * 2007-05-16 2008-10-02 Maschinenfabrik Reinhausen Gmbh Schaltanordnung
US7649147B2 (en) * 2007-09-14 2010-01-19 Riming Xiao Off-circuit tap changer device
US8153916B2 (en) * 2008-08-14 2012-04-10 Cooper Technologies Company Tap changer switch
US8013263B2 (en) * 2008-08-14 2011-09-06 Cooper Technologies Company Multi-deck transformer switch
DE102010007535B4 (de) 2010-02-11 2017-12-21 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Freilaufelement
DE102010020137A1 (de) * 2010-05-11 2011-11-17 Maschinenfabrik Reinhausen Gmbh Schaltanordnung
DE102010020130A1 (de) * 2010-05-11 2011-11-17 Maschinenfabrik Reinhausen Gmbh Lastumschalter für einen Stufenschalter

Also Published As

Publication number Publication date
UA114317C2 (uk) 2017-05-25
WO2013164211A1 (fr) 2013-11-07
DE102012103855A1 (de) 2013-11-07
CN104272415B (zh) 2016-09-07
US20150060244A1 (en) 2015-03-05
US9305719B2 (en) 2016-04-05
EP2845212A1 (fr) 2015-03-11
CN104272415A (zh) 2015-01-07
HK1204825A1 (en) 2015-12-04
DE102012103855B4 (de) 2016-01-07

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