EP3050067B1 - Changeur de prises - Google Patents

Changeur de prises Download PDF

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Publication number
EP3050067B1
EP3050067B1 EP14776854.3A EP14776854A EP3050067B1 EP 3050067 B1 EP3050067 B1 EP 3050067B1 EP 14776854 A EP14776854 A EP 14776854A EP 3050067 B1 EP3050067 B1 EP 3050067B1
Authority
EP
European Patent Office
Prior art keywords
preselector
switching
switching element
fine selector
switch
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
EP14776854.3A
Other languages
German (de)
English (en)
Other versions
EP3050067A1 (fr
Inventor
Uwe Kaltenborn
Thomas Strof
Christian Hurm
Anatoli Saveliev
Gerhard BÄUML
Alfred Bieringer
Eduard ZERR
Wolfgang Albrecht
Martin Hausmann
Andreas Stocker
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 EP3050067A1 publication Critical patent/EP3050067A1/fr
Application granted granted Critical
Publication of EP3050067B1 publication Critical patent/EP3050067B1/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
    • H01H9/0027—Operating mechanisms
    • 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
    • H01H9/0011—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
    • H01H9/0016—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
    • H01H9/0038—Tap change devices making use of vacuum switches

Definitions

  • the present invention relates to a tap changer, as is commonly used in a control transformer having at least one main winding and a control winding.
  • the tap changer has at least one fine selector for connecting a plurality of taps of the control winding and at least one connected to the main winding selection, via which the control winding is connected in different polarity with the parent winding.
  • By means of the tap changer series connection of the main winding with the control winding can be tapped according to the tapping of the control winding desired different voltages. In this way, it is possible to freely select the input / output voltage of the variable transformer in a desired range. It is needed for each phase of the three-phase current such a tap changer.
  • the tap changer is usually designed as a rotary switch.
  • the preselector and fine selector may be integrated on the axis of the rotary switch.
  • the fine selector is usually formed either by Fein hereleressore, which are arranged on different levels of a rotary switch. Each second tap of the control winding is connected alternately at each level. Between the arranged on both levels fine-selector contacts is switched by a known diverter switch, which usually has switching resistors. Such an arrangement is for example in the in DE 10 2009 060 132 described.
  • the fine selector can also be formed by a Fein Wegler prominence, which switches all arranged on a plane contacts the control winding. This fine-selection contact can also have switching resistances.
  • the fine selector itself can be connected to the preselector, and the switching operation of the preselector from one end of the control winding to the other end can be carried out with the aid of the fine selector, by one end of the control winding. is switched to the other end via all taps of the control winding.
  • the advantage lies in the fact that the fine selector can switch at least largely gas-free and uninterrupted between the individual taps by a diverter switch or by an auxiliary switch.
  • the switching can not take place over the entire winding of the control winding, but always only from one tap to the next, so that the potential difference when switching from one tap to another is significantly lower.
  • a control winding has ten taps
  • a diverter switch is often provided with fine selectors, so that the switching between the taps of the control winding is not only gas-free but also uninterrupted feasible.
  • the switchover of the preselector to the other end of the control winding is potential-free, that is without an arc. The invention thus enables an arc-free and therefore gas-free switching of the preselector by means of the fine selector.
  • the electrical connection between the preselector and the fine selector is preferably a direct electrical connection, eg a line or a conductor track.
  • electrical components such as: electrical filters, coils, resistors, capacitors, etc. may also be arranged in addition to the coupling switch.
  • the preselector has at least one movable switching element and two switching contacts which can be contacted by the switching element, wherein the electrical connection permanently contacts the switching element.
  • the switching element is regularly connected to the main winding and the switch contacts with the two ends of the control winding. The electrical connection thus connects the switching element of the preselector with the main winding and the fine selector.
  • the preselector comprises at least one switching element which is mechanically or electrically coupled to at least one switching element of the coupling switch.
  • the coupling is designed such that the switching element of the preselector is placed after closing the switching element of the coupling switch in a neutral position in which the selection is connected to neither of the two ends of the control winding. This has the purpose to exclude the selection from the entire switching process, which is now realized by the fine selector itself.
  • the coupling is designed such that the switching element of the coupling switch opens after closing the switching element of the preselector. If at the end of the switching, the switching element of the preselector is contacted with the other end of the control winding to which the fine selector has previously switched, the coupling switch is thus automatically opened.
  • the gas-free switching of the fine-vote can be done by a known diverter switch. It is also possible to use a fine selector without diverter switch, which switches in one plane. This usually has a Fein StrukturlerCount with Kochschaltwidermayn, to ensure in this way a gas-free switching from one tap to the next. However, instead of or in addition to the switching resistors, it can also be provided with one or more vacuum switches. In this context, it should be noted that the diverter switch is often located in its own oil and gas-tight vessel.
  • the diverter switch has at least one transient resistance to make the transition phase of switching from one tap to the next uninterruptible.
  • the control winding remains in contact with the main winding, so that no voltages can occur, for example due to the capacitive coupling of the control winding relative to the main winding.
  • the fine selectors may have a diverter switch, as in the DE 10 2009 060 132 is described. This allows gas-free switching operations of the fine selection.
  • the tap changer ie the preselector and / or the fine selector is designed as a rotary switch.
  • a rotary switch Such an arrangement has proven to be advantageous for power transformers, which are used in particular in the field of power supply. If several phases of a transformer to be switched simultaneously, the corresponding phases in different levels of the rotary switch can be arranged one behind the other. For example, all three phases of a three-phase current can be switched simultaneously.
  • the tap changer ie the preselector and / or the fine selector, is designed as a snap-action switch, which enables short switching operations and reduces the transitional time of the switching from one tap to the next.
  • the preselector is designed as a reverser whose switching element is designed for connection to the main winding and whose two switching contacts are designed for contacting the two ends of the control winding. Such a selection is circuitry very easy to implement and also reliable.
  • Wender the final position of the preselector
  • the coupling switch is switched to switch the preselector from its open normal position to a closed switching position. Since the coupling switch is closed only for switching the preselector or Wenders, the closed position is also called switching position.
  • the preselection is now switched to a non-contacting neutral position. Since the control winding is connected via the fine selector to the main winding and the switchover is to be performed by means of the fine selector, the preselector must be brought into the non-contacting neutral position, otherwise a potential difference between the inverter and the fine selector occurs, via the electrical connection and the coupling switch would be closed shortly. Now the fine selector is switched through all taps of the control winding to the other end of the control winding. This switching is done, as already mentioned, by means of the possibly existing auxiliary contacts or by means of a known diverter switch at least substantially free of gas. When the tap changer has reached the other end position on the control winding, the preselector is also switched to the new end position. Here, the preselector is due to the closed coupling contact at the same potential as the fine selector. Now the coupling switch is opened again to its normal position. This completes the arc and gas-free switching of the preselector.
  • the switching element of the preselector is coupled to the switching element of the coupling switch in order to automate the sequence of operation of the inverter and coupling switch and thus to make error-free.
  • the switching times for example, the times can be set, in which both switching elements are closed before one of the two switching elements opens again. By coupling thus dead times in the switching operations can be minimized.
  • an electrical or electronic control for the operation of the switching elements of the inverter and / or the coupling switch can be used.
  • the control transformer 10 includes a main winding 12 and a control winding 14 with a plurality of taps 16.
  • a tap changer 17 is arranged, which consists of a preselector 20 and a fine selector 18.
  • the fine selector 18 in turn consists of fine selector contacts 32, 34 and a diverter switch 24 which switches between the fine-selection contacts 32, 34.
  • the preselector 20 is designed as a turner. The preselector 20 connects the control winding 14 to the main winding 12 in the desired polarity, and the fine selector 18 selects via the fine selector contacts 32, 34 to be connected taps 16 of the control winding 14, wherein the switching between the Fein WeglerCounten 32, 34 in this embodiment via the diverter switch 24 takes place.
  • the main winding 12 is connected to the switching element 22 of the preselector 20, while the switching contacts 21, 23 are connected to the ends of the control winding 14.
  • the switching element 22 of the preselector 20 thus connects either one of the two ends of the control winding via the switch contacts 21, 23 with the main winding 12 or it remains in a non-contacting neutral position, as in Fig. 2c and 2d is shown.
  • the fine selector 18 is connected via a diverter switch 24 to a load discharge line 28.
  • the diverter switch 24 has a slide switch, which contacts the two fine-selection contact 32, 34 alternately under a short transition phase using transition resistances 30 of the diverter switch 24.
  • the diverter switch 24 thus contains two overshoot resistors 30, one of which is connected to a respective fine-selection contact 32, 34. In this way, the sliding switching element 26 moves over four contacts of the diverter switch 24, wherein with the interposition of the switching resistors 30 of a tap 16 to the next tap 16 of the control winding 14 is switched.
  • the taps to be connected are pre-selected by the voltage selector contacts 32, 34 de-energized.
  • the sliding switching element 26 moves from the illustrated right end position in the diverter switch 24 to the left end position (dashed line) and vice versa.
  • the tap changer 17 can also be designed as a so-called load selector, in which the fine selector 18 consists of the diverter switch 24 and the fine selector contacts 32, 34.
  • the preselection of the tap to be connected 16 and the load switching is performed in one step.
  • the fine selector 18 is now connected via an electrical connection 36 to the preselector (inverter) 20, preferably to its switching element 22.
  • a coupling switch 38 is arranged, with which the connection between the load dissipation 28 of the diverter switch 24 and the main winding 12 can be interrupted.
  • the switching element 40 of the coupling switch 38 is preferably coupled via a mechanical or electrical coupling 42 with the switching element 22 of the inverter 20, whereby their activity can be synchronized.
  • the switching element may be formed as a vacuum interrupter or snap contact.
  • the diverter switch 24 is in the schematic drawing sequences of Fig. 2a-2f shown only very schematically.
  • Fig. 2a shows the normal operating position of the tap changer 17, in which the coupling switch 38 is open, so that the voltage at the Lastab effet 28 of the diverter switch 24 corresponds to the voltage corresponding to the tap 16 of the control winding 14 and the corresponding voltage component of the main winding 12.
  • the coupling switch 38 For switching over the preselector 20, that is, for switching the polarization of the control winding 14, the coupling switch 38 is closed ( Fig. 2b ), When the fine selector 18 is located on the contact position of the Wenders 20 corresponding winding tap 16 of the control winding 14. Now, the switching element 22 of the inverter 20 is switched to a non-contacting neutral position, as in Fig. 2c is shown.
  • the switching elements 40 of the coupling switch 38 and the switching element 22 of the inverter 20 may be coupled together, so that the opening and closing of the switching elements coupled, that is inevitably synchronized.
  • the actuation can in a preferred embodiment via a transmission (not shown here), which is arranged between the diverter switch and selector, take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Keying Circuit Devices (AREA)

Claims (4)

  1. Commutateur à gradins (17) comprenant :
    - un présélecteur (20) qui comporte au moins un élément de commutation mobile (22) et deux contacts de commutation (21, 23) qui peuvent être mis en contact par l'élément de contact (22),
    - un sélecteur fin (18) qui comporte deux contacts de commutateur fin (32, 34) et une évacuation de charge (28) qui peut être sélectivement reliée à chaque contact du sélecteur fin (32, 34),
    - une liaison électrique (36) entre le présélecteur (20) et le sélecteur fin (18) dans laquelle est monté au moins un commutateur de couplage (38),
    caractérisé en ce que
    - la liaison électrique (36) relie l'élément de commutation (22) à l'évacuation de charge (28),
    - l'élément de commutation (22) est couplé mécaniquement ou électriquement à au moins un élément de commutation (40) du commutateur de couplage (38),
    - le système de couplage est basé sur un concept tel que l'élément de commutation (22) du présélecteur (20) puisse, après la fermeture de l'élément de commutation (40) du commutateur de couplage (38) être réglé dans une position neutre non liée, et
    - le système de couplage est basé sur un concept tel que l'élément de commutation (40) du commutateur de couplage (38) puisse être ouvert, après la fermeture de l'élément de commutation (22) du présélecteur (20).
  2. Commutateur à gradin (17) conforme à la revendication précédente, caractérisé en ce que
    le commutateur de couplage (38) peut être actionné par l'intermédiaire d'une transmission qui est montée entre un inverseur de charge (24) et le sélecteur fin (18).
  3. Transformateur de régulation (10) ayant au moins un enroulement de base (12), un enroulement de régulation (14) et un commutateur à gradins (17) réalisé conformément à l'une des revendications précédentes, dans lequel :
    - l'enroulement de régulation (14) comporte plusieurs prises (16) qui peuvent être branchées par le commutateur fin (18),
    - le présélecteur (20) relie l'enroulement de régulation (14) avec l'enroulement de base (12) dans la polarité souhaitée.
  4. Procédé de commutation d'un présélecteur (20) d'un commutateur à gradins (17) qui est réalisé conformément à l'une des revendications précédentes, comprenant la succession d'étapes suivantes :
    (a) le sélecteur fin (18) peut si nécessaire être déplacé sur la position finale du présélecteur (20) sur l'enroulement de régulation (14),
    (b) le commutateur de couplage (38) est branché à partir de la position normale ouverte dans une position d'inversion fermée,
    (c) le présélecteur (20) est branché dans une position neutre n'assurant pas une mise en contact,
    (d) le sélecteur fin (18) est branché par l'intermédiaire des prises (16) de l'enroulement de régulation (14) sur la position finale opposée sur l'enroulement de régulation (14),
    (e) le présélecteur (20) est branché sur la position finale sur l'enroulement de régulation (14) sur laquelle le sélecteur fin (18) est mis en contact,
    (f) le contact de couplage (40) est ouvert dans sa position normale.
EP14776854.3A 2013-09-26 2014-09-26 Changeur de prises Not-in-force EP3050067B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013110656.0A DE102013110656A1 (de) 2013-09-26 2013-09-26 Stufenschalter
PCT/EP2014/070586 WO2015044325A1 (fr) 2013-09-26 2014-09-26 Changeur de prise

Publications (2)

Publication Number Publication Date
EP3050067A1 EP3050067A1 (fr) 2016-08-03
EP3050067B1 true EP3050067B1 (fr) 2018-11-14

Family

ID=51626527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14776854.3A Not-in-force EP3050067B1 (fr) 2013-09-26 2014-09-26 Changeur de prises

Country Status (6)

Country Link
US (1) US9984833B2 (fr)
EP (1) EP3050067B1 (fr)
CN (1) CN105580099B (fr)
DE (1) DE102013110656A1 (fr)
UA (1) UA121963C2 (fr)
WO (1) WO2015044325A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016117526B3 (de) * 2016-09-16 2018-02-15 Maschinenfabrik Reinhausen Gmbh Lasststufenschalter, Regeltransformator mit Laststufenschalter und Verfahren zum Schalten eines Laststufenschalters
CN106935425B (zh) * 2017-03-24 2018-09-07 西安森宝电气工程有限公司 一种与有载分接开关配套的极性转换器
US10747244B2 (en) * 2018-02-13 2020-08-18 SAI Advanced Power Solutions Transformer device with modified voltage tap arrangement
EP4002409A1 (fr) * 2020-11-13 2022-05-25 Hitachi Energy Switzerland AG Commutateur à prise de réglage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118609B1 (fr) * 1968-03-13 1976-06-11
US3609516A (en) * 1968-10-01 1971-09-28 Tsuneo Nagatoshi Slide transformer
JPS507727B1 (fr) * 1969-11-04 1975-03-28
DE2201937C2 (de) 1972-01-15 1974-01-24 Reinhausen Maschf Scheubeck Anordnung zur Spannungsregelung von Stufentransformatoren
US4081741A (en) * 1975-10-29 1978-03-28 Asea Aktiebolag On-load tap changer
US4061963A (en) * 1976-04-27 1977-12-06 Westinghouse Electric Corporation Load tap changer system
SE402502B (sv) * 1976-10-29 1978-07-03 Asea Ab Lindningskopplare
DE19836463C1 (de) * 1998-08-12 1999-10-21 Reinhausen Maschf Scheubeck Stufenschalter mit einem Vorwähler
FR2873489B1 (fr) * 2004-07-20 2006-10-06 Areva T & D Sa Systeme de changement de prise de transformateur en charge
DE102009060132B3 (de) * 2009-12-23 2011-05-12 Maschinenfabrik Reinhausen Gmbh Stufenschalter mit Polungsschalter an einem Regeltransformator
CN102013815B (zh) * 2010-08-09 2012-09-05 国家电网公司 一种高压直流换流变压器及其有载调压开关连接方法
DE102012202667A1 (de) * 2012-02-22 2013-08-22 Maschinenfabrik Reinhausen Gmbh Stufenschalter an einem Regeltransformator

Also Published As

Publication number Publication date
CN105580099B (zh) 2018-09-04
WO2015044325A1 (fr) 2015-04-02
US20160211089A1 (en) 2016-07-21
UA121963C2 (uk) 2020-08-25
CN105580099A (zh) 2016-05-11
DE102013110656A1 (de) 2015-03-26
US9984833B2 (en) 2018-05-29
EP3050067A1 (fr) 2016-08-03

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