EP3022754B1 - Changeur de prises en charge - Google Patents

Changeur de prises en charge Download PDF

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Publication number
EP3022754B1
EP3022754B1 EP14734773.6A EP14734773A EP3022754B1 EP 3022754 B1 EP3022754 B1 EP 3022754B1 EP 14734773 A EP14734773 A EP 14734773A EP 3022754 B1 EP3022754 B1 EP 3022754B1
Authority
EP
European Patent Office
Prior art keywords
phase
load selector
load
wall
switching tube
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.)
Active
Application number
EP14734773.6A
Other languages
German (de)
English (en)
Other versions
EP3022754A1 (fr
Inventor
Silke Wrede
Christian Kotz
André MISSBACH
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
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Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3022754A1 publication Critical patent/EP3022754A1/fr
Application granted granted Critical
Publication of EP3022754B1 publication Critical patent/EP3022754B1/fr
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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
    • 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
    • H01H9/0016—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
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Definitions

  • the present invention relates to a load selector.
  • the load selector comprises a diverter switch insert with a switching tube rotatable about an axis.
  • a first phase, a second phase and a third phase are arranged along the axis of the switching tube.
  • Each phase comprises a switching segment each having a resistor arrangement.
  • Such load selectors belong to on-load tap changers (in English “on-load tap changers”, abbreviated OLTC) and are well known and commonly used in the prior art. They are used for uninterrupted switching between different winding taps of tapped transformers.
  • on-load tap-changers are actuated by a motor drive when switching over.
  • By the motor drive an output or input shaft is moved, which raises a power storage. If the energy storage fully wound, ie strained, he is unlatched, releases his energy abruptly and operated in the period of milliseconds (ms) a diverter switch insert, which performs a specific switching sequence during load switching.
  • ms milliseconds
  • different switch contacts and resistor contacts are actuated in a specific time sequence.
  • the switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, ie bridging means of one or more switching resistors.
  • vacuum interrupters are used as switching elements for load switching.
  • Star point load selectors have three phases along the switching tube. The contact systems of the individual phases are in the operating state at a neutral point potential. This is disclosed, for example, in the German Offenlegungsschrift DE 32 26 854 A1 , In this type of load selectors, all three phases are connected to each other via a metallic pipe section. In addition, they then additionally have a tube piece made of an insulating material put together with the metallic tube piece in order to form a Isolation against earth to take over. Furthermore, then still has to be a linkage with a bottom of an oil vessel of the load selector.
  • a spring energy storage for an on-load tap changer which is constructed of diverter switch and selector known.
  • the spring energy storage is used only for the operation of the diverter switch.
  • a flywheel is arranged on the spring energy store, close to the drive shaft. This serves as a holder for variably adjustable and selectable weights.
  • the spring energy store can thus be adapted to the diverter switch by adjusting or replacing the weights. Due to the division of the on-load tap-changer in diverter switch and selector flywheel is designed to be large and takes up a lot of space, which is available in the diverter switch of the on-load tap-changer available.
  • the object of the invention is to provide a cost-effective load selector or star point load selector, which is also still simple.
  • the load selector comprises a diverter switch insert with a switching tube rotatable about an axis. Three phases are arranged along the axis of the switching tube. Each phase comprises a switching segment each having a resistor arrangement.
  • a flywheel is mounted on the switching tube. Further, the switching tube carries a parallel along the axis to the switching tube extending massive and electrically conductive element which is connected by means of an electrical connection to each phase.
  • the star point load selector provides that the massive Element is electrically connected to the flywheel. This could for example be done by a screw of two components.
  • a preferred embodiment of the invention provides that between the bottom of the neutral load selector and the flywheel, an electrically conductive connecting element is arranged, which is in sliding contact with the ground.
  • a discharge contact of the first phase is connected to the high-mass element.
  • each of the three phases are associated with a plurality of actuating elements on an inner wall of an oil vessel, which are each attached via at least two retaining elements on the inner wall of the oil vessel.
  • a diverter ring is held in the first phase with at least three holding elements on an inner surface of each actuating element.
  • One of the at least three holding elements designed for the diverter contact diverter ring comprises an electrical connection element for the diverting contact or diverting ring.
  • the electrical connection element is guided by the retaining element to the outer wall of the oil vessel.
  • the diverter ring of the second and third phase is formed as a guide ring, which is fastened via at least three holding elements on the inner wall of the oil vessel. It is preferred that the guide ring has no electrically conductive property and thus can be made of a konten monten material.
  • each stage contact is provided on an inner surface of each actuating element with an electrical connection element for the respective stage contact.
  • the electrical connection element is guided to the outer wall of the oil vessel.
  • the load selector invention also Advantageous that avoided by the direct electrical connection with the massive element of the individual phases, the previously used from the prior art complex and costly connection of the silvered phases of the Ableitromee.
  • the individual phases can be connected to the massive element inside the oil vessel. This results in the advantage that Ableit tokene be saved in the second and third phase and on top of an additional electrical connection of the Ableitessore all three phases on the outside of the oil vessel completely eliminated. There is only a single electrical leakage contact over the first phase.
  • Fig. 1 shows a perspective view of a three-phase on-load tap changer or load selector 1 according to the invention.
  • the load selector 1 has a drive 3, such as an electric motor, with a gear 5, which raises a power accumulator, not shown. If the stored energy is fully absorbed, ie tensioned, it is unlatched, releases its energy abruptly and actuates a switching tube 15 of a diverter switch insert 14.
  • the rotating switching tube 15 is held in an oil vessel 18.
  • the oil vessel 18 is closed at the top with a lid 19 and also carries a bottom 21st
  • the load selector 1 has a first phase L1, a second phase L2 and a third phase L3, which are arranged one above the other in the oil vessel 18. Over the three phases L1, L2, L3 sits a preselector 37. In the view shown here electrical connection elements 38 are provided for preselector contacts on the oil vessel wall 17 of the oil vessel 18. Electrical connection elements 39 for stage contacts 392 (see Fig. 5 . 7 . 8th ) of the three phases L1, L2, L3 are also arranged on the load selector 1 so that they engage through the oil vessel wall 17 of the oil vessel 18.
  • Fig. 2 shows a sectional view taken along the line AA Fig. 1 of the load selector 1, wherein a plan view of the phase L1 is shown.
  • a plurality of the contour of the inner wall 20 of the oil vessel 18 adapted actuating elements 50, which constitute an actuating arrangement 41, are arranged.
  • Electrical connection elements 39 for the step contacts 392 engage through the corresponding actuating elements 50 and through the oil vessel wall 17 to the outer wall 16.
  • Umbrella caps 30 on the outer wall 16 of the oil vessel 18 stop the For this purpose, the electrical connection elements 39 for the step contacts, not shown here, and the electrical connection elements 68 for the discharge contact, not shown, interact with the step contacts 30 via the shield caps 30, so that the actuation elements 50 on the inner wall 20 of the oil vessel 18 are supported.
  • the umbrella caps 30 rest on the outer wall 16 of the oil vessel 18.
  • Each of the actuators 50 has at least two cams 51, 52 (see Fig. 7 ), which cooperate with corresponding and provided with rollers 43 operating levers 45 of the switching segment 25 of the corresponding phase L1, L2, L3.
  • the switching tube 15 carries in each phase L1, L2, L3 a holder 40 to which a massive element 36, the respective resistor assembly 27 and the respective switching segment 25 are mounted.
  • the switching segment 25 is mounted such that the rollers 43 of the actuating lever 45 with the corresponding control cams 51, 52 of the actuators 50 cooperate.
  • FIG. 3 and 4 show various perspective views of the diverter switch insert 14 of the three-phase load selector 1 after Fig. 1 .
  • the switching tube 15 of the diverter switch insert 14 three switching segments 25 are attached, so that the load selector 1 is divided into the three phases L1, L2, L3.
  • resistance circuits 27, which are assigned to the individual phases L1, L2, L3 of the load selector 1 are likewise fastened to the switching tube 15.
  • By turning the switching tube 15 contacts 29S for stage contacts or contacts 29A for Ableit awardede can be connected directly, the contacts 29S, 29A with corresponding and not shown Ableitcard 391 (only in the first phase L1) or the stage contacts 392, also not shown cooperate (see also Fig. 8 ).
  • a predetermined switching sequence is by means of the control cams 51, 52 (see Fig. 7 ) realized in which a plurality of vacuum interrupters (not shown) in the individual switching segments 25 are opened or closed.
  • a flywheel mass 35 is mounted on the switching tube 15.
  • the switching tube 15 carries a massive element 36, as described below.
  • Fig. 5 shows a perspective sectional view of the load selector 1 in the form of a neutral load selector.
  • This load selector 1 comprises a rotatable about an axis A switching tube 15 and the three phases L1, L2, L3, which are arranged along the axis A of the switching tube 15.
  • the load selector 1 includes in each of the phases L1, L2, L3 Switching segment 25, each with a resistor assembly 27 (see Fig. 4 ).
  • a flywheel mass 35 is mounted on the switching tube 15. Furthermore, the switching tube 15 carries a parallel along the axis A to the switching tube 15 extending massive and electrically conductive element 36, which is connected by means of an electrical connection 55 with each phase L1, L2, L3.
  • the massive element 36 and the flywheel 35 are needed in particular to support the temporal movement sequence of the switching operation, so that the rotation of the switching tube 15 causing triggering of the energy storage (not shown) performs a defined circuit or defined setting of the individual switching states of the Lastraclers 1.
  • the load selector 1 provides that the high-mass element 36 is electrically conductively connected to the flywheel mass 35. This could be done for example via a screw 54 of the flywheel 35 with the massive element 36, as in Fig. 6 shown. Since the high-mass element 36 and the flywheel 35 are preferably made of metal or an electrically conductive material, as well as the bottom 21 of the load selector 1 is made of metal, all metallic and electrically conductive parts should basically be at the same potential (neutral point potential). Thus, as shown here, between the bottom 21 of the load selector 1 and the flywheel 35, an electrically conductive connecting element 53 is arranged, which is in sliding contact with the bottom 21. This function could for example take over a spring-loaded connecting element 53.
  • Fig. 7 shows a schematic representation of a plurality of actuators 50 for forming the actuator assembly 41 (see Fig. 2 ), which are arranged in each phase L1, L2, L3 on the inner wall 20 of an oil vessel 18.
  • Each actuating element 50 is fastened to the inner wall 20 of the oil vessel 18 via at least two retaining elements 31.
  • one of the three holding elements 31 for the diverter ring 391 of the first phase L1 has a single electrical connection element 68 for the diverting ring 391, which is guided to the outer wall 16 of the oil container 18. Furthermore, it is provided in the load selector 1, that each of the diverter ring 391 of the second and third phase L2, L3 is formed as a guide ring, which is also attached via at least three retaining elements 31 on the inner wall 20 of the oil vessel 18.
  • the guide ring 391 are assigned no electrical connection elements, so that it is made of a non-conductive and cost-effective material can be made.
  • the step contacts 392 are also on holding elements 31 on the inner surface 65 (see Fig. 7 ) of each actuator 50 is supported. In this case, then an electrical connection element 39 of the respective stage contact 391 is guided to the outer wall 16 of the oil vessel 18.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transformer Cooling (AREA)
  • Keying Circuit Devices (AREA)

Claims (8)

  1. Sélecteur de charge (1) comprenant :
    un insert commutateur de charge (14) comportant un tube de commutation (15) mobile en rotation autour d'un axe (A), et
    une première phase (L1), une seconde phase (L2) et une troisième phase (L3) qui sont positionnées le long de l'axe (A) du tube de commutation (15), chaque phase (L1, L2, L3) comprenant un segment de commutation (25) ayant un dispositif de résistance (27) respectif,
    caractérisé en ce qu'
    une masse d'inertie (35) est montée sur le tube de commutation (15) et le tube de commutation (15) porte un élément (36) de forte masse et électriquement conducteur s'étendant parallèlement le long de l'axe (A) du tube de commutation (15) et qui est relié à chaque phase (L1, L2, L3) au moyen d'une liaison électrique (55), et
    la masse d'inertie (35) et l'élément de forte masse (36) servent à assister le déplacement dans le temps d'un processus de commutation du sélecteur de charge (1).
  2. Sélecteur de charge (1) conforme à la revendication 1,
    dans lequel l'élément de forte masse (36) est relié électriquement à la masse d'inertie (35).
  3. Sélecteur de charge (1) conforme à la revendication 2,
    dans lequel entre le fond (21) du commutateur de charge à point neutre (1) et la masse d'inertie (35) est monté un élément de liaison électriquement conducteur (53) qui est en contact par friction avec le fond (21).
  4. Sélecteur de charge (1) conforme à l'une des revendications précédentes,
    dans lequel un contact de décharge (391) de la première phase (L1) est relié à l'élément de forte masse (36).
  5. Sélecteur de charge (1) conforme à l'une des revendications précédentes,
    dans lequel à chaque phase (L1, L2, L3) sont associés plusieurs éléments d'actionnement (50) situés sur la paroi interne (20) d'un réservoir d'huile (18) et qui sont chacun fixés sur la paroi interne (20) du réservoir d'huile (18) par au moins trois éléments de retenue (31).
  6. Sélecteur de charge (1) conforme à l'une des revendications précédentes,
    dans lequel dans la première phase (L1) une bague de décharge (391) est maintenue avec au moins trois éléments de retenue (31) sur la surface interne (65) d'un élément d'actionnement respectif (50), et l'un des éléments de retenue (31) de la bague de décharge (391) comporte un élément de connexion électrique (68) de cette bague (391) qui est guidé par l'élément de retenue (31) vers la paroi externe (16) du réservoir d'huile (18).
  7. Sélecteur de charge (1) conforme à la revendication 6,
    dans lequel la bague de décharge (391) de la seconde phase et de la troisième phase (L2, L3) est réalisée sous la forme d'une bague de guidage qui est fixée sur la paroi interne (20) du réservoir d'huile (18) par l'intermédiaire d'au moins trois éléments de retenue (31).
  8. Sélecteur de charge (1) conforme à l'une des revendications 5 à 7,
    dans lequel chaque contact à gradins (392) est équipé sur la surface interne (65) d'un élément d'actionnement (50) respectif d'un élément de connexion électrique (39) de ce contact à gradins (392), et est guidé par l'intermédiaire de l'élément de retenue associé (31) vers la paroi externe (16) du réservoir d'huile (18).
EP14734773.6A 2013-07-16 2014-06-24 Changeur de prises en charge Active EP3022754B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107557.6A DE102013107557B4 (de) 2013-07-16 2013-07-16 Lastwähler
PCT/EP2014/063261 WO2015007476A1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge

Publications (2)

Publication Number Publication Date
EP3022754A1 EP3022754A1 (fr) 2016-05-25
EP3022754B1 true EP3022754B1 (fr) 2018-08-29

Family

ID=51062794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14734773.6A Active EP3022754B1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge

Country Status (5)

Country Link
EP (1) EP3022754B1 (fr)
CN (1) CN105531782B (fr)
DE (1) DE102013107557B4 (fr)
UA (1) UA119237C2 (fr)
WO (1) WO2015007476A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3086342A1 (fr) * 2015-04-21 2016-10-26 ABB Technology Ltd Contact fixe pour un changeur de prise et procédé de montage d'une cosse de câble sur celui-ci
DE102021116421A1 (de) 2021-06-25 2022-12-29 Maschinenfabrik Reinhausen Gmbh Schaltereinheit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231627A (en) * 1934-04-20 1941-02-11 Jansen Bernhard Step switch device for regulating transformers
DE705659C (de) * 1938-03-09 1941-05-06 Bernhard Jansen Dr Ing Stufenschalteinrichtung fuer Anzapftransformatoren
DE3226854A1 (de) * 1982-07-17 1984-01-19 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Lastwaehler fuer stufentransformatoren mit einem schrittweise drehbaren schaltrohr
DE3833126C2 (de) * 1988-09-29 1995-11-30 Reinhausen Maschf Scheubeck Lastwähler für Stufentransformatoren
DE4011019C1 (fr) * 1990-04-05 1991-12-05 Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De
JPH03289111A (ja) * 1990-04-06 1991-12-19 Toshiba Corp 負荷時タップ切換器
DE4231353C2 (de) * 1991-09-19 1997-07-24 Toshiba Kawasaki Kk Stufenschalter
DE19510809C1 (de) * 1995-03-24 1996-07-04 Reinhausen Maschf Scheubeck Lastumschalter eines Stufenschalters
DE19821775C1 (de) * 1998-05-14 1999-10-14 Reinhausen Maschf Scheubeck Lastwähler
KR100814514B1 (ko) * 2006-01-27 2008-03-17 가부시끼가이샤 도시바 부하시 탭 전환 장치
WO2008024067A1 (fr) * 2006-08-25 2008-02-28 Abb Technology Ltd. Résistance pour appareil électrique à haute tension et procédé de montage de résistance
JP4660490B2 (ja) * 2007-01-11 2011-03-30 株式会社東芝 負荷時タップ切換装置
CN101383222B (zh) * 2008-02-26 2010-06-23 上海华明电力设备制造有限公司 一种外挂组合式有载分接开关
DE202011109824U1 (de) * 2011-01-20 2012-04-03 Maschinenfabrik Reinhausen Gmbh Stufenschalter
BR112013024622B1 (pt) * 2011-03-25 2020-11-10 Abb Schweiz Ag trocador de tomada de carga

Also Published As

Publication number Publication date
UA119237C2 (uk) 2019-05-27
CN105531782A (zh) 2016-04-27
CN105531782B (zh) 2018-07-03
DE102013107557A1 (de) 2015-01-22
DE102013107557B4 (de) 2017-02-23
EP3022754A1 (fr) 2016-05-25
WO2015007476A1 (fr) 2015-01-22

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