EP0763835A2 - Sélecteur de prises - Google Patents

Sélecteur de prises Download PDF

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Publication number
EP0763835A2
EP0763835A2 EP96112981A EP96112981A EP0763835A2 EP 0763835 A2 EP0763835 A2 EP 0763835A2 EP 96112981 A EP96112981 A EP 96112981A EP 96112981 A EP96112981 A EP 96112981A EP 0763835 A2 EP0763835 A2 EP 0763835A2
Authority
EP
European Patent Office
Prior art keywords
tap
selector
contacts
electrically connected
fixed contact
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.)
Withdrawn
Application number
EP96112981A
Other languages
German (de)
English (en)
Other versions
EP0763835A3 (fr
Inventor
Dieter Dr -Ing. Dohnal
Hans-Henning Dipl.-Ing. Lessmann-Mieske
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
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 EP0763835A2 publication Critical patent/EP0763835A2/fr
Publication of EP0763835A3 publication Critical patent/EP0763835A3/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a tap selector of a tap changer for a tap changer.
  • Step switches have been known for many years in order to be able to adjust the voltage, active and reactive power of electrical networks by changing the gear ratio under load.
  • tap changers worldwide operate according to the principle of high-resistance switching. Basically, such tap changers consist of the tap selector and the diverter switch and work in two steps.
  • the tap adjacent to the live tap is pre-selected by the tap selector.
  • the current is switched by the diverter switch from the current-carrying to the preselected tap.
  • the step change is usually effected by a motor drive, which actuates the selector via a Maltese transmission and at the same time tensions a spring energy store, which in turn drives the diverter switch abruptly after tripping.
  • a tap selector W consists of fixed tap contacts 1 ... 6, which are electrically connected to the individual winding leads of the tap transformer and are usually arranged in two planes per phase in the wall of an insulating material cylinder, such that the even numbered and in the odd-numbered step contacts are arranged on the other level.
  • the tap selector W also consists of two movable selector contacts W1, W2, which are usually rotatably arranged in the interior of the insulating material cylinder and can connect the fixed tap contacts 1 ... 6.
  • Fig. 1a the switching principle of such a known tap changer is shown: Each time the load is switched, the tap adjacent to the current-carrying tap is preselected, then the current is switched by the load switch from the current-carrying tap to the preselected tap.
  • both selector contacts W1 and W2 are moved alternately; when switching from 2 to 3, W1 leaves the fixed contact 1 and contacts the adjacent contact 3, during the subsequent switchover W2 leaves the previous fixed contact 2 and contacts the adjacent fixed contact 4, etc.
  • the process of each load changeover takes about 40 to 60 ms.
  • the load changeover that has been initiated inevitably takes place after the spring energy storage device has been triggered, with the switching resistors R being loaded for about 20 to 30 ms.
  • the total time of the tap changer from the activation of the motor drive to the end of the load changeover is, depending on the design, about 3 to 6 seconds.
  • the object of the invention is to provide a tap selector for a tap changer in which any switching between freely selectable, not necessarily adjacent, winding taps is possible.
  • the tap selector according to the invention allows switching between any winding taps without the intermediate taps having to be run through and without, as is customary in the prior art, adding up the times for several individual load switches.
  • Fig. 2 shows a first embodiment of a tap selector according to the invention.
  • the selector contacts each consist of two parts, a fixed contact part 1a, 2a, ... and a corresponding, separately operable, movable contact part 1b, 2b ....
  • the fixed contact parts 1a, 2a, ... are U per phase , V, W arranged in two planes A, B in the wall of the insulating cylinder Z; the corresponding movable contact parts 1b, 2b, ... are located inside the insulating cylinder Z on a support T.
  • the movable contact parts 1b, 2b, ... are designed such that they extend a contact tongue or the like when actuated and this comes into electrical connection with the corresponding fixed contact part, such that the electrical connection between the two parts of the corresponding Selector contact and thus for the corresponding winding rejection of the step winding is produced.
  • the movable contact pieces which, as already explained, can be actuated separately and independently of one another in any order, can be actuated, for example, hydraulically or by electromagnetic means.
  • Each movable contact part of each phase is electrically connected to both sides of the diverter switch, not shown, such that the diverter switch can switch between any winding taps. What is essential to the tap selector according to the invention is the complete decoupling of the tap selector and diverter switch on the one hand and the possibility of arbitrary tap preselection on the other.
  • a step voltage i.e. the voltage between adjacent taps of the step winding is present, but possibly a multiple thereof.
  • 3 and 3a show a schematic representation of the corresponding switching scheme and a possible direct switching sequence between non-adjacent tap taps with the tap selector according to the invention.
  • Fig. 4 shows a second embodiment of the invention, in which, in contrast to the design shown so far, the contacts are not arranged in horizontal planes, but in vertical assignment.
  • the fixed contact parts 1a, 2a,... Being arranged in each case in two — preferably adjacent — areas for each phase.
  • the movable contact parts are in turn inside the insulating cylinder Z on a carrier T. Operation and function do not change as a result of this changed design, but this arrangement has certain advantages with regard to contact rejection, ie the routing of lines from the movable contact parts to the diverter switch.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
EP96112981A 1995-09-18 1996-08-13 Sélecteur de prises Withdrawn EP0763835A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995134601 DE19534601A1 (de) 1995-09-18 1995-09-18 Stufenwähler
DE19534601 1995-09-18

Publications (2)

Publication Number Publication Date
EP0763835A2 true EP0763835A2 (fr) 1997-03-19
EP0763835A3 EP0763835A3 (fr) 1997-05-07

Family

ID=7772490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112981A Withdrawn EP0763835A3 (fr) 1995-09-18 1996-08-13 Sélecteur de prises

Country Status (2)

Country Link
EP (1) EP0763835A3 (fr)
DE (1) DE19534601A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013020813A1 (fr) * 2011-08-10 2013-02-14 Maschinenfabrik Reinhausen Gmbh Sélecteur pour un commutateur
EP3242303A4 (fr) * 2014-12-29 2018-02-07 Diao, Junqi Commutateur de prises en charge à entraînement par aimants permanents

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010052979A1 (de) 2010-11-30 2012-05-31 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
DE102014103526A1 (de) * 2014-03-14 2015-09-17 Maschinenfabrik Reinhausen Gmbh Laststufenschalter, Stufentransformator zur Spannungsregelung und Verfahren zur Durchführung einer Umschaltung im Stufentransformator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE539839C (de) * 1929-11-17 1931-12-04 Siemens Schuckertwerke Akt Ges Einrichtung zum feinstufigen Regeln von Stufentransformatoren mit Hilfe von mehrerenan die Grobstufenanzapfungen angeschlossenen und mit der Sekundaerwicklung des Haupttransformators in Reihe liegenden Hilfstransformatoren
BE697080A (fr) * 1967-04-14 1967-09-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE539839C (de) * 1929-11-17 1931-12-04 Siemens Schuckertwerke Akt Ges Einrichtung zum feinstufigen Regeln von Stufentransformatoren mit Hilfe von mehrerenan die Grobstufenanzapfungen angeschlossenen und mit der Sekundaerwicklung des Haupttransformators in Reihe liegenden Hilfstransformatoren
BE697080A (fr) * 1967-04-14 1967-09-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013020813A1 (fr) * 2011-08-10 2013-02-14 Maschinenfabrik Reinhausen Gmbh Sélecteur pour un commutateur
EP3242303A4 (fr) * 2014-12-29 2018-02-07 Diao, Junqi Commutateur de prises en charge à entraînement par aimants permanents

Also Published As

Publication number Publication date
EP0763835A3 (fr) 1997-05-07
DE19534601A1 (de) 1997-03-20

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