EP0160125B1 - Sélecteur en charge pour transformateur à prises - Google Patents

Sélecteur en charge pour transformateur à prises Download PDF

Info

Publication number
EP0160125B1
EP0160125B1 EP84115570A EP84115570A EP0160125B1 EP 0160125 B1 EP0160125 B1 EP 0160125B1 EP 84115570 A EP84115570 A EP 84115570A EP 84115570 A EP84115570 A EP 84115570A EP 0160125 B1 EP0160125 B1 EP 0160125B1
Authority
EP
European Patent Office
Prior art keywords
contacts
contact
switching
distances
step contacts
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.)
Expired
Application number
EP84115570A
Other languages
German (de)
English (en)
Other versions
EP0160125A2 (fr
EP0160125A3 (en
Inventor
Werner Widmann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT84115570T priority Critical patent/ATE43025T1/de
Publication of EP0160125A2 publication Critical patent/EP0160125A2/fr
Publication of EP0160125A3 publication Critical patent/EP0160125A3/de
Application granted granted Critical
Publication of EP0160125B1 publication Critical patent/EP0160125B1/fr
Expired legal-status Critical Current

Links

Images

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
    • H01H9/0016—Contact arrangements for tap changers

Definitions

  • the invention relates to load selectors for step transformers with main and step windings for switching from one tap to the next with fixed step contacts arranged on a circuit in an insulating cylinder, connected to the taps, and with switching contacts of three current branches on one circuit which can be pivoted on the circuit and are represented by rollers common contact carrier.
  • all three switching contacts each carry the potential of the same step contact in their rest position and lie in a row in the direction of the switching movement. Radial movements of these switching contacts with respect to the contact carrier are controlled by the fixed step contacts which simultaneously represent cams.
  • Switch contact arrangements for load selectors of this type are known, for example, from the subsequently published DE-OS-3 326 549 and DE-OS-3 401 297.
  • DE-OS-2 914 928 and DE-OS 3 123 894 show the usual arrangement of the step contacts of load selectors with equal distances apart on a circle in an insulating cylinder.
  • the step contacts assigned to the same phase are combined on a single circle.
  • this arrangement often leads to uneconomically large diameters for the insulating cylinders and the associated structure of the load selector even at nominal transformer voltages above 60 kV.
  • the requirement to ensure a surge voltage between adjacent contacts of approximately 300 kV contributes to increasing the required distances.
  • the invention is therefore based on the object to design load selectors with switch contact arrangements of the type described in such a way that their manufacture and use is also possible in transformers with nominal voltages of more than 60 kV while fully guaranteeing operational reliability and the expected service life.
  • this is achieved in that the center distance between a fixed step contact lying on the main winding and the two adjacent fixed step contacts is 20% to 60% larger than the center distance between the other fixed step contacts and that the sides of the step contact lying on the main winding and the sides of the two adjacent step contacts facing it have horn-like extensions in cross section, the spacings of which are approximately equal to the distances of the other step contacts in the direction of the switching movement of the switching contacts.
  • electrodes lying outside the insulating cylinder and covering the fastening means of the step contacts have a smaller distance from one another than the associated step contacts within the insulating cylinder.
  • the leakage current paths emanating from the step contact located in the main winding are at least 20% larger than the electrically parallel spacings of the step contacts and that the sides of the step contacts flanking the smaller center distances have bulges directed towards one another, due to which the associated leakage current paths are less than 20% larger than the electrically parallel distances.
  • the stepped contacts are convexly bulged only in their edge zones in the run-up area of the switch contacts, but are concavely curved back in their central area according to the radius of the swivel path of the switch contacts.
  • a load selector has the advantage that, using components which are already used at lower nominal voltages, can also be used in load selectors provided for higher nominal voltages, the most important advantage being that a relatively small diameter can be achieved for the insulating cylinder carrying the step contacts.
  • a main winding 16 of any phase of a transformer lies between a high-voltage terminal 23 and a step contact 1.
  • a step winding 18 is connected to the main winding 16 via a turner 19 electrically connected in series, depending on the position of the inverter 19, the voltage tapped from the step winding 18 is added to that of the main winding 16 or subtracted therefrom.
  • Step contacts 1 to 14 connected to the low-voltage end of the main winding 16 or to the taps of the step winding 18 are arranged in one plane on the inside of an insulating cylinder 17 and consequently lie on a circle.
  • Switch contacts 20, 21 and 22 guided by a contact carrier 15 are moved on this circuit and switch a load current line 24 without interruption in a known manner from step contact to step contact.
  • step contact 1 Between the step contact 1 and, depending on the position of the inverter 19, the step contact 14 or the step contact 2, however, there is the much greater voltage of the entire step winding 18. If the nominal and operating voltage of the transformer is now increased, the voltage also rises the step winding 18 and thus also the electrical load on the space between the step contact 1 and the step contact 14 or the step contact 2.
  • the center distances between the step contacts 1 and the step contact 14 or the step contact 2 according to the invention are 50% larger than the other center distances in the exemplary embodiment shown.
  • the step contacts 1, 2 and 14 are wider than the step contacts 3 to 13 in that their mutually facing sides are provided with horn-like extensions in cross section. As a result, approximately the same dimension is achieved for the lateral distance for all step contacts 1 to 14. Surprisingly, it suffices that only the leakage current path between the step contact 1 and the step contacts 2 or 14 adjacent to it remains enlarged if the nominal and operating voltage of the transformer is increased to values above 60 kV.
  • the illustrated embodiment shows an arrangement with thirteen stages. Accordingly, an increase in the center distance of a step contact connected to the main winding end of step contacts adjacent to it is also possible for other step numbers, for example eleven or fifteen.

Landscapes

  • Contacts (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Protection Of Transformers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Claims (5)

1. Sélecteur de charge pour des transformateurs à gradins comportant un enroulement principal (16) et un enroulement a gradins (18) servant à réaliser la commutation d'une prise à la suivante et comportant des contacts de gradins fixes (1 à 14), disposés sur un cercle dans un cylindre isolant (17) et reliés aux prises, et des contacts de commutation (20, 21, 22), pouvant pivoter simultanément sur le cercle et représentés par des galets, les contacts de commutation appartenant à trois branches d'alimentation en courant et étant situés sur un porte-contacts commun (15), et dans lequel
- dans leur position de repos, les trois contacts de commutation (20, 21, 22) sont respectivement portés au potentiel du même contact de gradin (1 à 14) et sont disposés en série les uns derrière les autres dans le sens du déplacement de commutation, et
- les déplacements radiaux des contacts de commutation (20, 21, 22) par rapport au porte-contacts (15) sont commandés par les contacts de gradins fixes (1 à 14), représentant simultanément des cames, caractérisé par le fait
- que la distance centre-à-centre et, de façon correspondante pour le porte-contacts (15), l'angle de rotation entre le contact de gradin fixe (1) relié à l'enroulement principal (16) et les contacts de gradins fixes (2 à 14) voisins du contact de gradin précédent est supérieure de 20 % à 60 % à la distance centre-à-centre ou à l'angle de rotation entre les autres contacts de gradins fixes (2 à 14), et
- que les faces du contact de gradin (1) raccordé à l'enroulement principal (16) et les côtés, associés à ce contact, des deux contacts de gradins voisins (2 à 14) comportent des prolongements, qui possèdent une section transversale en forme de corne, sont maintenus à une certaine distance de la surface du cylindre isolant (17) et dont les distances réciproques sont approximativement égales aux distancés des autres contacts de gradins (2 à 14), dans la directicn du déplacement des contacts de commutation.
2. Sélecteur de charge suivant la revendication 1, caractérisé par le fait que des électrodes situées à l'extérieur du cylindre isolant (17) et recouvrant les moyens de fixation des contacts de gradins (1 à 14) sont séparées par une distance plus faible que les contacts (1 à 14) de gradins associés.
3. Sélecteur de charge suivant les revendications 1 et 2, caractérisé par le fait que les voies de courants de fuite, qui s'étendent à partir du contact de gradin (1) relié à l'enroulement principal (16), sont d'une longueur supérieure d'au moins 20 % aux distances, qui sont en parallèle du point de vue électrique, des contacts de gradins (1, 2 ou 14).
4. Sélecteur de charge suivant les revendications 1 à 3, caractérisé par le fait que les côtés, qui délimitent les distances les plus petites centre-à-centre, des contacts de gradins (2 à 14) possèdent des renflements dirigés les uns vers les autres, et grace auxquels les voies associées de courants de fuite sont plus longues d'au moins 20 % que les distances parallèles du point de vue électrique.
5. Sélecteur de charge suivant les revendications 1 à 4, caractérisé par le fait que les contacts de gradins (1 à 14) sont cintrés avec une forme bombée dans leurs parties marginales au niveau de la zone de montée des contacts de station (20, 21, 22), mais sont cintrés en retour avec une forme concave, dans leur zone centrale, conformément au rayon de la trajectoire de pivotement des contacts de commutation (20, 21, 22).
EP84115570A 1984-04-30 1984-12-17 Sélecteur en charge pour transformateur à prises Expired EP0160125B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115570T ATE43025T1 (de) 1984-04-30 1984-12-17 Lastwaehler fuer stufentransformatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416050 1984-04-30
DE19843416050 DE3416050A1 (de) 1984-04-30 1984-04-30 Lastwaehler fuer stufentransformatoren

Publications (3)

Publication Number Publication Date
EP0160125A2 EP0160125A2 (fr) 1985-11-06
EP0160125A3 EP0160125A3 (en) 1986-12-10
EP0160125B1 true EP0160125B1 (fr) 1989-05-10

Family

ID=6234707

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115570A Expired EP0160125B1 (fr) 1984-04-30 1984-12-17 Sélecteur en charge pour transformateur à prises

Country Status (4)

Country Link
EP (1) EP0160125B1 (fr)
JP (2) JPS60236204A (fr)
AT (1) ATE43025T1 (fr)
DE (2) DE3416050A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008031302A1 (fr) * 2006-09-12 2008-03-20 Wuhan Taipu Transformer Changer Co., Ltd. Changeur de prise non excité à dispositif de blindage

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2610883B2 (ja) * 1987-08-06 1997-05-14 健三 山口 入出力端子の切り換え方法
DE19847519C1 (de) * 1998-10-15 2000-08-10 Reinhausen Maschf Scheubeck Kontakt
GB2420447B (en) * 2004-11-19 2008-02-27 Invensys Controls Uk Ltd Switching mechanism
GB2458508B (en) * 2008-03-20 2012-03-14 Brush Transformers Ltd Switching assembly
DE102016104499B3 (de) * 2016-03-11 2017-04-27 Maschinenfabrik Reinhausen Gmbh Wähler für einen Laststufenschalter und Laststufenschalter mit Lastumschalter und Wähler
CN106057508B (zh) * 2016-07-13 2019-04-30 武汉泰普变压器开关有限公司 一种无励磁分接开关
CN106024435B (zh) * 2016-07-14 2019-07-23 武汉泰普变压器开关有限公司 一种便于调档的无励磁分接开关
CN109741979B (zh) * 2018-12-27 2024-05-03 西门子能源变压器(武汉)有限公司 变压器的开关装置及变压器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326549A1 (de) * 1983-07-22 1985-02-07 Transformatoren Union Ag, 7000 Stuttgart Lastwaehler fuer stufentransformatoren
DE3401297A1 (de) * 1984-01-16 1985-07-18 Transformatoren Union Ag, 7000 Stuttgart Lastwaehler fuer stufentransformatoren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237041B2 (fr) * 1974-09-25 1977-09-20
DE2815047C2 (de) * 1978-04-07 1985-07-18 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Dreiphasiger Stufenwähler für Stufentransformatoren
DE2914928C2 (de) * 1979-04-12 1983-02-24 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Kontaktanordnung für Lastwähler von Stufentransformatoren
DE2967539D1 (en) * 1979-11-21 1985-12-05 Acec Electrical apparatus comprising a series of voltage taps and mobile selector equipment
GB2078445B (en) * 1980-06-17 1984-04-18 Ass Tapchangers Ltd An on-load tap selector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326549A1 (de) * 1983-07-22 1985-02-07 Transformatoren Union Ag, 7000 Stuttgart Lastwaehler fuer stufentransformatoren
DE3401297A1 (de) * 1984-01-16 1985-07-18 Transformatoren Union Ag, 7000 Stuttgart Lastwaehler fuer stufentransformatoren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008031302A1 (fr) * 2006-09-12 2008-03-20 Wuhan Taipu Transformer Changer Co., Ltd. Changeur de prise non excité à dispositif de blindage
DE112007001415B4 (de) * 2006-09-12 2017-04-06 Wuhan Taipu Transformer Changer Co., Ltd. Spannungsfreier Stufenschalter für einen Transformator in Käfigbauart

Also Published As

Publication number Publication date
DE3416050A1 (de) 1985-10-31
EP0160125A2 (fr) 1985-11-06
JPH0672230U (ja) 1994-10-07
EP0160125A3 (en) 1986-12-10
JPH0726825Y2 (ja) 1995-06-14
ATE43025T1 (de) 1989-05-15
JPS60236204A (ja) 1985-11-25
DE3478164D1 (en) 1989-06-15

Similar Documents

Publication Publication Date Title
DE69105673T2 (de) Transformator.
WO2010115485A1 (fr) Changeur de prises en charge à éléments de commutation à semi-conducteurs
EP0160125B1 (fr) Sélecteur en charge pour transformateur à prises
DE202010017646U1 (de) Laststufenschalter
DE3217528A1 (de) Kontaktanordnung fuer relais
EP3341948A1 (fr) Commutateur de réglage en charge pour un graduateur de réglage en charge ainsi que interrupteur principal permanent et sectionneur associés
EP0415044B1 (fr) Dispositif de contact pour sélecteur de prise de transformateur à prises
DE102014107273B4 (de) Schalter für eine Schaltvorrichtung und Lastumschalter für einen Laststufenschalter eines Stelltransformators
DE1118860B (de) Stufenschalter fuer hohe Spannung fuer Stufentransformatoren
DE2849559A1 (de) Elektrische energieversorgungsanlage mit einleiterstromwandlern
DE2936519C2 (de) Kontaktanordnung bei einem Stufenwähler für einen Transformator
EP0151740B1 (fr) Sélecteur de charge pour transformateurs à prises
DE19534544A1 (de) Stufenschalter
EP0132662B1 (fr) Sélecteur de charge pour transformateurs à échelons
EP0124904A2 (fr) Commutateur à gradins
DE19957228B4 (de) Kontaktanordnung für eine Vakuumschaltkammer
DE3214973C2 (fr)
DE1249990B (fr)
DE2712640C3 (de) Einstelltransformator mit Stufenwicklungen und Stufenschalter für hohe Leistungen
DE2358885B2 (de) Stufenwähler für mit einer einen Grob- und Feinstufenteil enthaltenden Stufenwicklung ausgestattete Transformatoren
DE202009018642U1 (de) Stufenschalter mit Halbleiter-Schaltelementen
DE2736521C3 (de) Lastumschalter für Transformatoren
DE2816356C2 (de) Primärseitig umschaltbarer Stromwandler
EP1519391B1 (fr) Transformateur encapsulé en résine
DE3126972A1 (de) Schaltungsanordnung fuer die wicklungen von doppelstocktransformatoren

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB LI SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TRANSFORMATOREN UNION AKTIENGESELLSCHAFT

17P Request for examination filed

Effective date: 19870330

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT BERLIN UND MUENCHEN

17Q First examination report despatched

Effective date: 19880728

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB LI SE

REF Corresponds to:

Ref document number: 43025

Country of ref document: AT

Date of ref document: 19890515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3478164

Country of ref document: DE

Date of ref document: 19890615

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19891215

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19900323

Year of fee payment: 6

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19901231

Ref country code: CH

Effective date: 19901231

Ref country code: BE

Effective date: 19901231

BERE Be: lapsed

Owner name: SIEMENS A.G. BERLIN UND MUNCHEN

Effective date: 19901231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EAL Se: european patent in force in sweden

Ref document number: 84115570.8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981210

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19981211

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19981218

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19981222

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990201

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991217

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991218

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19991217

EUG Se: european patent has lapsed

Ref document number: 84115570.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001003

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST