EP3022750B1 - Commutateur de sélection - Google Patents

Commutateur de sélection Download PDF

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Publication number
EP3022750B1
EP3022750B1 EP14734769.4A EP14734769A EP3022750B1 EP 3022750 B1 EP3022750 B1 EP 3022750B1 EP 14734769 A EP14734769 A EP 14734769A EP 3022750 B1 EP3022750 B1 EP 3022750B1
Authority
EP
European Patent Office
Prior art keywords
actuating
load selector
phase
control cam
oil tank
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
EP14734769.4A
Other languages
German (de)
English (en)
Other versions
EP3022750A1 (fr
Inventor
Klaus HÖPFL
Silke Wrede
Christian Kotz
Christian Pircher
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 EP3022750A1 publication Critical patent/EP3022750A1/fr
Application granted granted Critical
Publication of EP3022750B1 publication Critical patent/EP3022750B1/fr
Active 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
    • H01H9/0038—Tap change devices making use of vacuum 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
    • H01H9/0027—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

Definitions

  • the present invention relates to a load selector.
  • the load selector includes a diverter switch insert having a one-axis rotatable switching tube, the diverter switch insert comprising a first phase, a second phase, and a third phase.
  • Each phase comprises at least one switching segment with at least two vacuum interrupters.
  • Each of the vacuum interrupters is associated with an actuating lever, which carries a respective roller at a first end and interacts with a second end, each with a vacuum interrupter.
  • An actuator assembly on an inner wall of the oil pan cooperates with the rollers of the actuating levers.
  • 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 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.
  • Load selector of the type mentioned, as for example in the German patent DE 28 33 126 C2 described, serve to switch the taps of the control windings of these tapped transformers under load and thus compensate for voltage changes in the consumer targeted.
  • a load selector in the interior of which a switching shaft is arranged, are secured to the at least two switching contacts and a Ableitcard per phase.
  • the actuation of the switching contacts via levers, which are pressed by cam rings, which are arranged in the interior of the load selector, in the direction of the switching shaft.
  • a load selector which consists of an insulating cylinder with contact elements. Inside the Last Strukturlers a switching shaft is arranged, on which at least one contact frame is fixed with switching contacts. Furthermore, a cam ring is arranged in the interior of the cylinder. The levers, which are mechanically connected on the one hand to the switching contacts and on the other hand with the cam ring, serve as actuating means for the switching contacts.
  • a disadvantage of the known from the prior art cam rings is their size. Here is a lot of material needed in the production of these cam rings. Since the cam rings are used as a load dissipation, they must be made of electrically conductive material, such as copper. against the background of rising raw material prices such large cam rings are very expensive. Since the switching sequences are also controlled in a targeted manner by the cam rings and that the smallest units of time are important, tight manufacturing tolerances must be maintained. The production of such large parts with extreme accuracy is particularly expensive and time-consuming.
  • the object of the invention is therefore to provide a load selector that is simple in construction, cost-effective to manufacture and assemble while ensuring safe and reliable operation.
  • the load selector according to the invention for carrying out switching from one winding tapping to an adjacent winding tapping comprises a diverter switch insert with an axis-rotatable switching tube which is arranged in an oil vessel.
  • the diverter switch insert includes a first phase, a second phase, and a third phase.
  • Each phase comprises at least one switching segment with at least two vacuum interrupters.
  • Each vacuum interrupter is associated with an actuating lever, each carrying a roller at a first end and cooperating with a second end operatively connected to a vacuum interrupter.
  • An actuator assembly on an inner wall of the oil pan cooperates with the rollers of the actuating levers.
  • the actuator assembly includes at least two separate actuators that are physically separate from each other.
  • Each actuator has an upper cam and a lower cam formed, with each cooperating a role of an actuating lever.
  • an actuation of a first vacuum interrupter takes place via the upper control cam and its associated actuating lever, and an actuation of a second vacuum interrupter via the lower control curve and its associated actuating lever.
  • Each actuator carries at least one stage contact and cooperates with a diverting / guiding ring.
  • the at least one step contact holds at least one holding element a respective actuating element on the inner wall of the oil vessel.
  • the discharge / guide ring is conductively connected in the first phase with an electrical connection element, so that the discharge / guide ring is a discharge ring.
  • the electrical connection element is guided through the oil vessel wall.
  • the electrical connection element associated holding element and at least one further holding element are connected to the oil vessel so as to additionally support the actuating element on the inner wall of the oil vessel.
  • the diverter / guide ring is connected in the other two phases via at least two retaining elements with the oil vessel, so that the respective actuating element is additionally supported on the inner wall of the oil vessel.
  • guide rollers may be provided, which attach to an upper side and on a lower side of the diverting / guide ring and thus provide the necessary guidance.
  • the load selector is designed as a star point load selector
  • the second and the third phase lead-off / guide rings only have the function of a guide ring and can therefore be made of a non-electrically conductive material.
  • the diverter / guide ring and the at least one stage contact are arranged between the upper control cam and the lower control curve of each actuating element.
  • each actuating element has at least one bore with at least one positioning groove for fastening a stepped contact, wherein the stepped contact has at least one web corresponding to the positioning groove.
  • each actuator at least one breakthrough with a stop for attachment of the electrical connection element with holding element or the at least one further holding element for the diverter.
  • the actuating element is preferably made of a dimensionally stable plastic, wherein in the manufacturing process already the upper control cam and the lower control cam are introduced by appropriate forming, in particular without additional machining.
  • An advantage of the load selector, with an actuator assembly consisting of a plurality of physically separate actuators, is the ease of manufacture and the lower manufacturing costs through low cost materials. This is achieved by the material used, namely plastic instead of metal. Since the actuators are not connected continuously, in addition, less material is used as in a continuous rotating actuator assembly. In addition, the risk of distortion in the separate actuators of the actuator assembly is completely excluded, so that the Committee is significantly reduced.
  • 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 energy storage is fully wound up, ie strained, it is unlatched, gives its energy abruptly free and actuates a switching tube 15 of a diverter switch insert 14.
  • the rotating switching tube 15 is supported 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 . 6 . 8th . 9 ) 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 first 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 (see Fig. 5 . 6 . 8th and 9 Umbrella caps 30 on the outer wall 16 of the oil vessel 18 hold the disposed on the inner wall 20 of the oil vessel 18 actuators 50.
  • 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. 5 . 6 and 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.
  • a predetermined switching sequence is by means of the control cams 51, 52 (see Fig. 5 . 6 and 7 ), in which a plurality of vacuum interrupters 33, 34 (see Fig. 6 ) are opened or closed in the individual switching segments 25.
  • 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 section of the rotated perspective sectional view of the line BB Fig. 2 with a switching segment 25, wherein in this view the vacuum interrupters 33, 34 are not visible (see Fig. 6 ).
  • the switching segment 25 is mechanically connected to the switching tube 15 rotatably.
  • the actuating elements 50 are, as shown, arranged on the inner wall 20 of the oil vessel 18 and result in the entirety of the actuating arrangement 41.
  • Each actuating element 50 has an upper control cam 51 and a lower control curve 52.
  • the actuating element 50 is preferably formed from a plastic and is preferably produced by forming or by injection molding without mechanical processing.
  • a diverter / guide ring 391 which is designed as a discharge contact, is arranged in the interior of the load selector 1. This is with an electrical connection element 68 (see Fig. 9 ) connected.
  • Each actuating element 50 is mounted on the inner wall 20 of the oil vessel 18 via the at least one step contact 392 in cooperation with the respective holding elements 31.
  • the diverter ring 391 is fastened via retaining elements 31 on the inner wall 20 of the oil vessel 18 by the actuating arrangement 41 of the plurality of actuators 50.
  • Each step contact 392 is alternately contacted by the movable contacts 29S for the step contacts 392 of the switching segment 25, depending on the stage selected. Outside the oil vessel 18, electrical connection elements 39 of the step contacts 392 are provided, so that an electric line (not shown) leading to a step winding can be attached thereto.
  • Both the diverter / guide ring 391 and the step contacts 392 are arranged in this example between the upper control cam 51 and the lower control curve 52 of the actuating elements 50.
  • FIG. 6 shows a section of the sectional view along the line BB FIG. 2 , wherein in this view, the switching segment 25 associated vacuum interrupters 33, 34 can be seen.
  • Each vacuum interrupter 33, 34 is associated with an actuating lever 45.
  • actuating lever 45 Depending on a second end 45b of the actuating lever 45 is connected to the vacuum interrupters 33, 34.
  • a roller 43 is arranged in each case.
  • FIG. 7 shows a perspective view of an actuating element 50.
  • the actuating element 50 has at least one bore 60 for the assembly and the passage of the electrical connection elements 39 of the step contacts 392 (see Fig. 5 . 6 ) on.
  • At each bore 60 at least one positioning groove 61 is arranged in each case. This corresponds to a web 64 formed at the respective step contact 392 (see Fig. 8 ).
  • the web 64 prevents the step contact 392 from twisting during operation. Further, the web 64 facilitates the positionally accurate mounting of the step contacts 392 on the actuator 50.
  • each actuator 50 via two stage contacts 392, each having a holding element 31 and an electrical connection element 39 of the step contact 392 have (see FIG. 7 ), connected to the oil vessel 18.
  • each actuator 50 at least one opening 62, each with a stop 63.
  • the openings 62 are used to carry out a holding element 31 or a holding element 31 with an electrical connection elements 68 for the discharge / guide ring 391, via which the discharge / guide ring 391 is fixed.
  • the stopper 63 is formed such that the electrical connection element 68 with retaining element 31 (see Fig. 9 ) or holding elements 31 (see Fig. 5 and 6 ) alone correspond to such that they can not be twisted when mounting.
  • FIG. 8 shows a step contact 392 with the holding member 31, the electrical connection element 39 and at least one web 64. This corresponds to the positioning groove 61 (see Fig. 7 ) and ensures that the step contact 392 is aligned during assembly and can not be rotated during operation.
  • FIG. 9 shows a sectional view along the section line CC FIG. 6 ,
  • the preferred embodiment of the first phase L1 of the load selector 1 has a discharge / guide ring 391, which is electrically conductively connected to the electrical connection element 68 for the diverter ring 391.
  • the holding element 31 with the electrical connection element 68 extends through the opening 62 of the actuating element 50 to the outside.
  • the discharge / guide ring 391 is fixed in the interior of the oil container 18 by means of at least two holding elements 31, which in turn extend through the openings 62 of further actuating elements 50.
  • the actuating elements 50 are each connected via the step contacts 392 in cooperation with the holding elements 31, here in each case two per actuating element 50, with the oil vessel 18. By two stage contacts 392 ensures that the actuators 50 are positioned clearly and against rotation.

Landscapes

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

Claims (10)

  1. Sélecteur de charge (1) comprenant :
    un insert de commutateur de charge (14) comprenant un tube de commutation (15) mobile en rotation autour d'un axe (A) et qui est monté dans un réservoir d'huile (18), dans lequel :
    l'insert de commutateur de charge (14) a une première phase (L1), une seconde phase (L2) et une troisième phase (L3),
    chaque phase (L1, L2, L3) comporte au moins un segment de commutation (25) équipé d'au moins deux tubes de commutation à vide (33, 34), et
    à chaque tube de commutation à vide (33, 34) est associé un levier d'actionnement (45) qui porte respectivement un galet (43) à une première de ses extrémités (45a) et coopère par sa seconde extrémité (45b) avec un tube de commutation à vide (33, 34) respectif, et
    un dispositif d'actionnement (41) situé sur une paroi interne (20) du réservoir d'huile (18) et coopérant avec les galets (43) du levier d'actionnement (45),
    caractérisé en ce que
    le dispositif d'actionnement (41) est constitué par au moins deux éléments d'actionnement (50) dont les corps sont séparés l'un de l'autre, et chaque élément d'actionnement (50) comporte une came de commande supérieure (51) et une came de commande inférieure (52) avec lesquelles coopère respectivement un galet (43) d'un levier d'actionnement (45).
  2. Sélecteur de charge (1) conforme à la revendication 1,
    caractérisé en ce que la came de commande supérieure (51) et le levier d'actionnement (45) qui lui est associé permettent l'actionnement d'un premier tube de commutation à vide (33), tandis que la came de commande inférieure (52) et le levier d'actionnement (45) qui lui est associé permettent l'actionnement d'un second tube de commutation à vide (34).
  3. Sélecteur de charge (1) conforme à l'une des revendications précédentes,
    dans lequel chaque élément d'actionnement (50) porte au moins un contact à gradins (392) et coopère avec une bague de dérivation / guidage (391).
  4. Sélecteur de charge (1) conforme à la revendication 3,
    dans lequel le contact à gradins (392) maintient l'élément d'actionnement (50) respectif sur la paroi interne (20) du réservoir d'huile (18) avec au moins un élément de retenue (31).
  5. Sélecteur de charge (1) conforme à l'une des revendications 3 et 4, dans lequel dans la première phase (L1) la bague de dérivation / guidage (391) est reliée de façon conductrice avec un élément de connexion électrique (68),
    l'élément de connexion électrique (68) est guidé par la paroi du réservoir d'huile (17), et
    l'élément de retenue (31) associé à l'élément de connexion électrique (68) et au moins un autre élément de retenue (31) sont reliés au réservoir d'huile (18) pour maintenir ainsi en outre l'élément d'actionnement (50) sur la paroi interne (20) du récipient d'huile (18).
  6. Sélecteur de charge (1) conforme à l'une des revendications 3 à 5, dans lequel dans les deux autres phases (L2, L3) la bague de dérivation / guidage (391) est reliée au réservoir d'huile par au moins deux éléments de retenue (31) de sorte que l'élément d'actionnement respectif (50) soit en outre maintenu sur la paroi interne (20) du réservoir d'huile (18).
  7. Sélecteur de charge (1) conforme à l'une des revendications 3 à 6, dans lequel la bague de dérivation / guidage (391) et le contact à gradins (392) sont situés entre la came de commande supérieure (51) et la came de commande intérieure (52) de l'un des éléments d'actionnements (50) respectifs.
  8. Sélecteur de charge (1) conforme à l'une des revendications 3 à 7 dans lequel chaque élément d'actionnement (50) comporte au moins un perçage (60) muni d'au moins une rainure de positionnement (61) pour permettre de fixer un contact à gradins (392), et le contact à gradins (392) comporte au moins une barrette (64) correspondant à la rainure de positionnement (61).
  9. Sélecteur de charge (1) conforme à l'une des revendications 3 à 7, dans lequel chaque élément d'actionnement (50) comprend au moins une ouverture (62) équipé d'une butée (63) pour permettre de fixer l'élément de connexion électrique (68) à l'élément de retenue (31) ou l'autre élément de retenue (31) de la bague de dérivation (391).
  10. Sélecteur de charge (1) conforme à l'une des revendications précédentes,
    dans lequel chaque élément d'actionnement (50) est réalisé en un matériau synthétique indéformable, et, lors du procédé de fabrication par mise en forme, la came de commande supérieure (51) et la came de commande inférieure (52) peuvent être formées sans usinage par enlèvement de copeaux complémentaire.
EP14734769.4A 2013-07-16 2014-06-24 Commutateur de sélection Active EP3022750B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107545.2A DE102013107545B4 (de) 2013-07-16 2013-07-16 Lastwähler
PCT/EP2014/063249 WO2015007469A1 (fr) 2013-07-16 2014-06-24 Commutateur de sélection

Publications (2)

Publication Number Publication Date
EP3022750A1 EP3022750A1 (fr) 2016-05-25
EP3022750B1 true EP3022750B1 (fr) 2017-09-06

Family

ID=51062790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14734769.4A Active EP3022750B1 (fr) 2013-07-16 2014-06-24 Commutateur de sélection

Country Status (5)

Country Link
EP (1) EP3022750B1 (fr)
CN (1) CN105378872B (fr)
DE (1) DE102013107545B4 (fr)
UA (1) UA116476C2 (fr)
WO (1) WO2015007469A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016104500B3 (de) 2016-03-11 2017-05-04 Maschinenfabrik Reinhausen Gmbh Laststufenschalter
CN105931876B (zh) * 2016-07-14 2018-11-23 武汉泰普变压器开关有限公司 一种无励磁分接开关的操动传动装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1956368C3 (de) * 1969-11-08 1974-07-04 Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg Lastumschalter für Stufenschalter von Regeltransformatoren mit Vakuumschaltelementen
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
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
GB2457079A (en) * 2008-02-01 2009-08-05 Brush Transformers Ltd On-load tap changer
EP2261935A1 (fr) 2009-06-10 2010-12-15 ABB Research Ltd. Commutateur de sélection et son procédé de fonctionnement
WO2011134528A1 (fr) * 2010-04-30 2011-11-03 Abb Technology Ltd Agencement de commutateur de sélection pour dispositif à haute tension
BR112013000266A2 (pt) 2010-07-06 2017-11-07 Abb Research Ltd mecanismo de disjuntor de seleção com compensação para posição de participação de came

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
DE102013107545A1 (de) 2015-01-22
EP3022750A1 (fr) 2016-05-25
DE102013107545B4 (de) 2017-02-16
WO2015007469A1 (fr) 2015-01-22
UA116476C2 (uk) 2018-03-26
CN105378872B (zh) 2018-02-27
CN105378872A (zh) 2016-03-02

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