EP2289081A1 - Leistungstransformator mit stufenschalter - Google Patents
Leistungstransformator mit stufenschalterInfo
- Publication number
- EP2289081A1 EP2289081A1 EP09757146A EP09757146A EP2289081A1 EP 2289081 A1 EP2289081 A1 EP 2289081A1 EP 09757146 A EP09757146 A EP 09757146A EP 09757146 A EP09757146 A EP 09757146A EP 2289081 A1 EP2289081 A1 EP 2289081A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- oil
- tap changer
- pipe
- power transformer
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
Definitions
- the invention relates to an oil-filled power transformer with a likewise oil-filled tap changer.
- strain radiators are known, which are mounted on the outer sides of the transformer and which are used at the same time for cooling and absorbing the thermal expansion of the oil, thus eliminating the usually existing, often spreading expansion vessel, which is usually mounted above the transformer cover
- strain radiators can be used to build a closed system in which the transformer oil has no direct contact with the outside air and therefore can not oxidize (-> oil aging, sludge formation).
- Such hermetically sealed systems also allow the use of flame retardant, based on renewable raw materials, biodegradable Ester oils that need to be protected from oxidation.
- strain radiators have a uniform size, which results as the optimum of cooling surface and variable volume.
- variable volume poses great challenges to the durability of the material used.
- the in-transformer tap changer is connected via a pipe with its own Dehnradiator, which serves alone to accommodate the volume expansion of tap changer oil. Due to the very small change in volume of the tap-changer oil in comparison with the transformer oil, the stretching radiator provided for the tap changer is several times oversized.
- the gas space is filled with nitrogen.
- About pipes are the Gas chambers directly in connection with nitrogen-filled expansion tanks whose volume is dimensioned so that the pressure conditions, which are due to the volume expansion of the oil, remain within a predetermined allowable range over the entire operating temperature range (eg between 0 bar and 0.5 bar overpressure ).
- Disadvantages here are the large nitrogen containers, which increase the outside dimensions of the transformer by approx. 20%.
- the nitrogen cushion is located directly under the transformer or step switch cover, so that it is possible to dispense with any expansion vessels.
- solutions with separate expansion tanks for transformer and tap changer are known in which there is a rubber bag or a rubber membrane in the interior of the expansion vessel, with which an air discharge of the oil is achieved.
- the interior of the rubber bag or the surface of the rubber membrane facing away from the oil is in communication with the ambient air via a drying template.
- the disadvantage here is the limited life of the rubber bag or the rubber membrane, since by aging the rubber after 10-15 years is porous and thus permeable to oxygen.
- the object of the invention is to provide a simple solution, with a low structural complexity, a compensation of the thermal expansion of both the oil in the transformer tank and the separate tap changer oil is possible.
- the existing on the tap changer head flange which is provided according to the prior art for connection to a separate expansion vessel only for the tap changer, now connected by means of a pipe to the oil tank of Transfo ⁇ nators.
- the flange on the transformer to connect an expansion vessel - and only this - is actually connected to the single expansion vessel via another pipeline.
- the only expansion vessel now cascades both the oil volume changes of the tap changer oil tank and the transformer oil tank.
- both flanges of both the tap changer and the transformer are connected to each other via a pipe, and this pipe is connected via another pipe connection in turn with the single expansion tank in connection.
- an oil flow relay is arranged in the direction away from the flange of the tap changer pipe connection, which trigger the circuit breaker of the transformer when a certain oil flow limit is exceeded. In this way, oil flows above a tap changer-specific limit value, which characterize a possible malfunction of the tap changer, can be reliably detected.
- FIG. 1 a shows a first embodiment of the invention according to claim 1 Figure Ib a second embodiment of the invention according to claim 2.
- FIG. 1a There are shown in a schematic representation of an electric power transformer 1 and a standing with him tap changer 2.
- the tap changer 2 has a selector 2.1 arranged at the bottom, which is connected via electrical connecting lines to the winding taps of the power transformer 1, as well as a diverter switch 2.2 arranged above it with its own oil-filled diverter switch vessel.
- the entire assembly is located in an oil-filled transformer tank 3.
- the tap changer 2 has an upper flange 4, the transformer tank 3 quite analogous to an upper flange 5.
- the two flanges 4, 5 are known in the art with separate ⁇ lausdehnungsgefä communcen or other means connected to the volume compensation.
- the flange 4 of the tap changer is provided with a pipe 6, which opens into the oil-filled transformer tank 3.
- an oil flow relay 7 is inserted.
- Only the flange 5 of the transformer tank 3 leads via a further pipeline to a single oil expansion vessel 8.
- the hermetic seal of the oil by means of a rubber bag 11, the interior of which is in communication with the ambient air.
- Figure Ib shows a modified embodiment. Identical components are provided with the same reference numerals; on a repeated explanation of the overall structure can therefore be omitted.
- the flange 4 of the tap changer 2 and the flange 5 of the transformer tank 3 are connected by means of a common pipe 9.
- an oil flow relay 7 is connected.
- This common, both flanges 4, 5 connecting, pipe 9 in turn is in turn with the single oil conservator 8 in connection.
- a pressure relief valve 10 as available for example under the trade name MPreC® provide. Its mode of action has already been explained above.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Transformer Cooling (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09757146T PL2289081T3 (pl) | 2008-06-06 | 2009-04-07 | Transformator mocy z przełącznikiem zaczepów |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008027274A DE102008027274B3 (de) | 2008-06-06 | 2008-06-06 | Leistungstransformator mit Stufenschalter |
PCT/EP2009/002542 WO2009146762A1 (de) | 2008-06-06 | 2009-04-07 | Leistungstransformator mit stufenschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2289081A1 true EP2289081A1 (de) | 2011-03-02 |
EP2289081B1 EP2289081B1 (de) | 2015-08-05 |
Family
ID=40896977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09757146.7A Active EP2289081B1 (de) | 2008-06-06 | 2009-04-07 | Leistungstransformator mit stufenschalter |
Country Status (12)
Country | Link |
---|---|
US (1) | US20110063064A1 (de) |
EP (1) | EP2289081B1 (de) |
JP (1) | JP2011522428A (de) |
KR (1) | KR20110015470A (de) |
CN (1) | CN102057453A (de) |
CA (1) | CA2726873C (de) |
DE (1) | DE102008027274B3 (de) |
ES (1) | ES2551321T3 (de) |
PL (1) | PL2289081T3 (de) |
RU (1) | RU2505875C2 (de) |
UA (1) | UA100156C2 (de) |
WO (1) | WO2009146762A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009035699A1 (de) * | 2009-07-30 | 2011-02-10 | Maschinenfabrik Reinhausen Gmbh | Anordnung eines Stufenschalters an einem Regeltransformator |
DE202010012811U1 (de) | 2010-09-18 | 2011-12-19 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
WO2012022397A1 (de) | 2010-08-18 | 2012-02-23 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
DE202010011524U1 (de) | 2010-08-18 | 2011-11-23 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
DE202010011521U1 (de) * | 2010-08-18 | 2011-11-23 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
DE102011008689B3 (de) * | 2011-01-15 | 2012-03-08 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
JP2013058527A (ja) * | 2011-09-07 | 2013-03-28 | Meiden T&D Co Ltd | 変圧器 |
JP2013131511A (ja) * | 2011-12-20 | 2013-07-04 | Aichi Electric Co Ltd | 変圧器 |
CN102664090B (zh) * | 2012-04-26 | 2014-10-22 | 衡阳市南方互感器有限公司 | 可视互感器雾状滴注真空注油装置 |
JP2013247173A (ja) * | 2012-05-24 | 2013-12-09 | Toshiba Corp | 負荷時タップ切換装置および変圧器 |
DE102013100266A1 (de) | 2013-01-11 | 2014-07-17 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
DE102013100263A1 (de) * | 2013-01-11 | 2014-07-31 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators |
DE102013100264A1 (de) | 2013-01-11 | 2014-07-17 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators |
DE102013107547B4 (de) * | 2013-07-16 | 2017-01-19 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter, Verfahren zur Montage eines Lastumschaltereinsatzes im Laststufenschalter und Kerosinablassschraube |
DE102014102262A1 (de) * | 2014-02-21 | 2015-08-27 | Maschinenfabrik Reinhausen Gmbh | Schalteinrichtung |
CN103985530A (zh) * | 2014-05-09 | 2014-08-13 | 昆山达功电子有限公司 | 调压变压器 |
CN104124039B (zh) * | 2014-06-23 | 2016-04-13 | 湖北网安科技有限公司 | 一种油浸式高过载电力变压器 |
KR101464579B1 (ko) * | 2014-08-07 | 2014-11-24 | 조원전설(주) | 96t 계전기 동작 시험용 다이얼 텐션 게이지 |
CN104465028B (zh) * | 2014-11-28 | 2017-02-22 | 江苏亘德科技有限公司 | 一种便于拆装的用于支撑变压器储油柜的支撑结构 |
CN105822859A (zh) * | 2016-04-22 | 2016-08-03 | 国家电网公司 | 变压器通用注油法兰装置 |
DE102016110221A1 (de) | 2016-06-02 | 2017-12-07 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalterkopf sowie Laststufenschalter mit Laststufenschalterkopf |
CN109637859B (zh) * | 2018-12-14 | 2024-05-03 | 广东电网有限责任公司 | 一种用于取油样的变压器分接开关工具 |
RU192342U1 (ru) * | 2019-01-15 | 2019-09-13 | Общество с ограниченной ответственностью "НПО "ИнтелТехПром" (ООО "НПО "ИТП") | Трансформатор для электродегидратора |
CN111029115A (zh) * | 2019-11-07 | 2020-04-17 | 国网山东省电力公司菏泽供电公司 | 一种变压器油位油温监测报警仪 |
DE102020122444A1 (de) | 2020-08-27 | 2022-03-03 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter und Stufentransformator mit Laststufenschalter |
EP4002409A1 (de) * | 2020-11-13 | 2022-05-25 | Hitachi Energy Switzerland AG | Stufenschalter |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL90244C (de) * | 1900-01-01 | |||
DE669306C (de) * | 1931-11-21 | 1938-12-21 | Siemens Schuckertwerke Akt Ges | OEltransformator mit angebautem, in OEl angeordnetem Stufenschalter |
US2915720A (en) * | 1954-01-13 | 1959-12-01 | Elin Union Ag Fur Elek Sche In | Transformer with a bell-shaped cover and an on-load-tap-changing device |
SU119246A1 (ru) * | 1958-04-11 | 1958-11-30 | А.В. Богословский | Устройство дл защиты маслонаполнениых трансформаторов |
AT208968B (de) * | 1958-05-21 | 1960-05-10 | Elin Union Ag | Entlüftungseinrichtung für die beim Stufenschalten unter Last entstehenden Schaltgase |
DE2158192A1 (de) * | 1971-11-24 | 1973-05-30 | Schmeing Geb | Spulenhalterung fuer webschuetzen |
DE2158869A1 (de) * | 1971-11-27 | 1973-06-14 | Schorch Gmbh | Oeltransformator mit stufenschalter |
DE2515192C3 (de) * | 1975-04-08 | 1983-01-05 | Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg | Stufentransformator mit Druckausgleich zwischen getrennten Ölräumen |
JPS5434014U (de) * | 1977-08-11 | 1979-03-06 | ||
US4117525A (en) * | 1977-09-09 | 1978-09-26 | Electric Power Research Institute, Inc. | Overpressure protection for vaporization cooled electrical apparatus |
JPS61141110A (ja) * | 1984-12-14 | 1986-06-28 | Toshiba Corp | 負荷時タツプ切換器 |
FR2739486B1 (fr) * | 1995-09-28 | 1997-11-14 | Magnier Philippe | Procede et dispositif de protection contre l'explosion et l'incendie des transformateurs electriques |
FR2791463B1 (fr) * | 1999-03-22 | 2001-06-29 | Philippe Magnier | Dispositif de prevention contre l'explosion des transformateurs electriques |
JP2001284146A (ja) * | 2000-03-29 | 2001-10-12 | Toshiba Corp | 負荷時タップ切換器付き変圧器 |
US7145760B2 (en) * | 2000-12-15 | 2006-12-05 | Abb Technology Ltd. | Tap changer monitoring |
JP4280040B2 (ja) * | 2002-08-22 | 2009-06-17 | 株式会社ダイヘン | 負荷時タップ切換変圧器 |
FR2888034B1 (fr) * | 2005-06-29 | 2010-10-08 | Philippe Magnier | Dispositif de prevention contre l'explosion d'un transformateur electrique |
CN101248497B (zh) * | 2005-07-01 | 2012-03-21 | 西门子公司 | 电开关 |
ES2375152T3 (es) * | 2005-11-16 | 2012-02-27 | Ctr Manufacturing Industries Limited | Procedimiento y dispositivo para la prevención y protección de un transformador eléctrico frente a una explosión e incendio. |
-
2008
- 2008-06-06 DE DE102008027274A patent/DE102008027274B3/de active Active
-
2009
- 2009-04-07 ES ES09757146.7T patent/ES2551321T3/es active Active
- 2009-04-07 UA UAA201014626A patent/UA100156C2/ru unknown
- 2009-04-07 KR KR1020117000342A patent/KR20110015470A/ko not_active Application Discontinuation
- 2009-04-07 CA CA2726873A patent/CA2726873C/en active Active
- 2009-04-07 CN CN2009801206850A patent/CN102057453A/zh active Pending
- 2009-04-07 US US12/989,668 patent/US20110063064A1/en not_active Abandoned
- 2009-04-07 RU RU2010153989/07A patent/RU2505875C2/ru active
- 2009-04-07 JP JP2011511989A patent/JP2011522428A/ja active Pending
- 2009-04-07 WO PCT/EP2009/002542 patent/WO2009146762A1/de active Application Filing
- 2009-04-07 EP EP09757146.7A patent/EP2289081B1/de active Active
- 2009-04-07 PL PL09757146T patent/PL2289081T3/pl unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2009146762A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2505875C2 (ru) | 2014-01-27 |
EP2289081B1 (de) | 2015-08-05 |
UA100156C2 (ru) | 2012-11-26 |
DE102008027274B3 (de) | 2009-08-27 |
ES2551321T3 (es) | 2015-11-18 |
RU2010153989A (ru) | 2012-07-20 |
KR20110015470A (ko) | 2011-02-15 |
CA2726873C (en) | 2016-09-06 |
CN102057453A (zh) | 2011-05-11 |
US20110063064A1 (en) | 2011-03-17 |
CA2726873A1 (en) | 2009-12-10 |
PL2289081T3 (pl) | 2015-12-31 |
JP2011522428A (ja) | 2011-07-28 |
WO2009146762A1 (de) | 2009-12-10 |
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