EP2662871A2 - Agencement doté d'un transformateur - Google Patents

Agencement doté d'un transformateur Download PDF

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Publication number
EP2662871A2
EP2662871A2 EP13165063.2A EP13165063A EP2662871A2 EP 2662871 A2 EP2662871 A2 EP 2662871A2 EP 13165063 A EP13165063 A EP 13165063A EP 2662871 A2 EP2662871 A2 EP 2662871A2
Authority
EP
European Patent Office
Prior art keywords
oil
water
transformer
temperature
heat exchanger
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.)
Withdrawn
Application number
EP13165063.2A
Other languages
German (de)
English (en)
Other versions
EP2662871A3 (fr
Inventor
Günther Hoba
Harald Fink
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2662871A2 publication Critical patent/EP2662871A2/fr
Publication of EP2662871A3 publication Critical patent/EP2662871A3/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to an arrangement with an electrical transformer which is filled with oil, with an oil-air heat exchanger, which is connected to the transformer via an oil line, and which is associated with a fan unit, with the heat from the oil in air can be, as well as with an oil-water heat exchanger, which is connected to the transformer and the oil-air heat exchanger via oil lines, and can be discharged with the heat from the oil to water, the water at least one supply unit can be fed.
  • the oil inside the transformer is heated due to the electrical current flowing through the windings of the transformer. This heat is generated by means of the oil-air heat exchanger discharged the existing in the vicinity of the transformer air.
  • the heat of the oil is discharged by means of the oil-water heat exchanger to the water and thus to the supply unit.
  • the supply unit may be a heating system, by which the heat supplied via the water is used for heating, for example, a building.
  • load fluctuations of the transformer can result in the temperature of the oil within the transformer possibly changing in an undesired manner.
  • the object of the invention is to provide an arrangement in which the heat generated by the transformer during operation can be used without this leading to undesirable conditions of the transformer.
  • the invention solves this problem by an arrangement according to claim 1.
  • a temperature of the oil of the transformer is determined and the fan unit is influenced as a function of this temperature. It is particularly advantageous if the speed of the at least one fan of the fan unit is influenced as a function of this temperature.
  • the temperature of the oil within the transformer in a desired manner and way can be influenced.
  • the temperature of the oil of the transformer can be controlled and / or regulated to a predefinable desired temperature value or the temperature of the oil of the transformer can be influenced in such a way that it does not exceed or fall short of a predefinable upper or lower temperature value ,
  • the transformer, the oil-water heat exchanger and the oil-air heat exchanger are connected in series via the oil lines. In this way, an oil circuit is formed, with the aid of which the heat generated during operation of the transformer can be withdrawn from the transformer.
  • the oil-water heat exchanger is connected via water lines to the supply unit. This builds a water loop capable of transferring heat from the oil-water heat exchanger to the supply unit (s).
  • the oil-water heat exchanger may be connected to a buffer to compensate for time and / or power-dependent changes in the temperature of the heated water.
  • the supply of water to the supply unit in dependence on the temperature is controlled and / or regulated. In this way, on the one hand overheating of the oil in the transformer avoided on the other hand, a sufficient promotion of heated water to the supply unit / s can be achieved.
  • the single figure shows a schematic block diagram of an embodiment of an inventive arrangement with an electrical transformer.
  • an arrangement 10 which has an electric oil-cooled transformer 11, an oil-water heat exchanger 12 and an oil-air heat exchanger 13.
  • the transformer 11 may be any embodiment of an oil-cooled transformer, in particular an oil-cooled power transformer. It is expressly understood that instead of the oil any other cooling liquid may be present. Furthermore, it should be noted that instead of the transformer 11, an electrical throttle or an electrical step transformer or the like may be present.
  • the oil-water heat exchanger 12 may be any embodiment of a heat exchanger in which heat is discharged from oil to water. It is understood that instead of the oil, another cooling liquid may be present. It is also expressly pointed out that instead of the water any other cooling liquid can be present. Optionally, the oil-water heat exchanger 12 may also be adapted to dissipate heat in the reverse direction from the water to the oil.
  • the oil-water heat exchanger 12 may be, for example, a plate heat exchanger or a shell-and-tube heat exchanger or the like in which the plates or tube bundles are in a shell space, and where the plates or bundles of tubes from the oil and the shell space of the water is flowing through.
  • the oil-air heat exchanger 13 may be any embodiment of a heat exchanger that transfers heat from oil to air. Under the air is understood in particular the atmospheric air in the vicinity of the transformer 11. Furthermore, it is understood that instead of the oil, another cooling liquid may be present. Optionally, the oil-air heat exchanger 13 may also be suitable for dissipating heat in the reverse direction from the air to the oil.
  • the oil-air heat exchanger 13 may, for example, be a lamellar or rib-shaped body through which the oil flows and which is surrounded by the air.
  • the oil-air heat exchanger 13 is associated with a fan unit 14, which is composed of at least one variable-speed electric fan, and a Air flow through the example, lamellar or rib-shaped body of the oil-air heat exchanger 13 can generate.
  • the transformer 11 is connected via an oil line 15 a to the oil-water heat exchanger 12, which in turn is connected via an oil line 15 b to the oil-air heat exchanger 13, which in turn is connected via an oil line 15 c to the transformer 11.
  • a variable-speed electric oil pump 16 is interposed in the oil passage 15a. It is understood that the oil pump 16 may also be integrated into the oil line 15b or the oil line 15c or optionally may have a fixed speed or may possibly be omitted entirely.
  • the transformer 11 and the oil lines 15a, 15b, 15c are filled with oil and form an oil circuit as a whole.
  • the oil-water heat exchanger 12 is connected via a water line 17 a and a water line 17 b with a buffer 18.
  • a variable-speed electric water pump 19 is interposed in the water line 17a. It is understood that the water pump 19 may also be integrated into the water line 17b or, if appropriate, may have a fixed speed or may possibly be completely eliminated.
  • the buffer 18 is connected via a feed line 20a and a return 20b with at least one supply unit, not shown.
  • This supply unit may be any device in which heat contained in the water is somehow used for any purpose.
  • the water pipes 17a, 17b and the forward and return flows 20a, 20b are filled with water and form a total of a water cycle.
  • the supply unit may be a heating system in which the heat contained in the water is used for heating buildings or the like.
  • the copper of the windings and thus the oil in the transformer 11 is heated due to the electrical current flowing through the electrical windings of the transformer 11.
  • the heated oil is supplied from the oil pump 16 via the oil passage 15 a to the oil-water heat exchanger 12. At least part of the heat contained in the heated oil is transferred to the water in the oil-water heat exchanger 12. The water is heated in this way.
  • the oil cooled by the heat given off to the water is supplied to the oil-air heat exchanger 13 via the oil passage 15b. There, another part of the heat contained in the oil with the help of the fan unit 14 is released into the air. This is indicated in the figure by the arrow 21. The further cooled in this way oil is then fed back to the transformer 11 via the oil line 15c.
  • the water heated in the oil-water heat exchanger 12 is supplied from the water pump 19 via the water line 17a, via the buffer 18 and via the supply line 20a to the supply unit (s). There, the heat contained in it is taken from the water. The water cooled in this way is passed through the return 20b, the Buffer 18 and the water pipe 17b fed back to the oil-water heat exchanger 12.
  • the transformer 11 is associated with at least one temperature sensor 22, with which a temperature T of the oil within the transformer 11 can be measured.
  • the temperature T of the oil may be an average oil temperature or a maximum oil temperature or a so-called hot spot temperature of the copper of the windings of the transformer 11.
  • the temperature T can also be determined in other ways, for example by a mathematical modeling of the temperature conditions within the transformer 11 or the like.
  • the temperature sensor 22 can be dispensed with to that extent.
  • the temperature T of the oil of the transformer 11 is supplied to the fan unit 14, the oil pump 16 and the water pump 19 in the present embodiment.
  • the fan unit 14, the oil pump 16 and the water pump 19 can then be controlled and / or regulated as a function of the temperature T.
  • the rotational speed of the at least one fan of the fan unit 14, the rotational speed of the oil pump 16 and the rotational speed of the water pump 19 can be influenced as a function of the temperature T.
  • a high temperature T of the oil of the transformer 11 can be achieved by a corresponding increase in the speed of the oil pump 16 and / or the speed of the fan of the fan unit 14, that the oil more heat per unit time is withdrawn. In this way, for example, it can be ensured that the Temperature T of the oil does not exceed a predefinable upper temperature value.
  • the speed of the fan of the fan unit 14 and optionally additionally the speed of the oil pump 16 can be controlled and / or regulated such that the temperature T of the oil substantially maintains a predefinable set temperature value.
  • the water pump 19 can be influenced in such a way that the temperature of the water in the buffer 18 has approximately a presettable flow temperature value.
  • the water circuit or the buffer 18 may be associated in a manner not shown, a temperature sensor with which the temperature of the water can be measured.
  • the flow temperature value can be selected, for example, as a function of the connected supply units, for example, depending on the desired temperature of a connected heater.
  • Another possibility is to control the speeds of the fan unit 14, the oil pump 16 and the water pump 19 in dependence on each other and / or to regulate.
  • the temperature T of the oil of the transformer 11 and optionally the temperature of the water may be supplied to a control unit, which then controls the speed of the fan unit 14, the oil pump 16 and / or the Water pump 19 as a function of the temperature T of the oil and optionally the temperature of the water controls and / or regulates.
  • the fan speed of the fan unit 14 and possibly also reduces the speed of the oil pump 16 and increases the speed of the water pump 19 simultaneously become.
  • the heat of the oil is thereby essentially absorbed by the water and released only to a small extent in the air. In this way it can be achieved that the predetermined flow temperature value for the water is maintained, although the oil of the transformer 11 has only a mean temperature T.
  • the buffer 18 can be compensated for time-dependent fluctuations in the temperature of the water and / or the delivered amount of water.
  • the buffer 18 is integrated into the oil-water heat exchanger 12. Also it is possible that the buffer 18 can be dispensed with altogether.
  • the transformer 11, the oil-water heat exchanger 12 and the oil-air heat exchanger 13 are connected in series and form the already mentioned oil circuit.
  • the transformer 11 with the oil-air heat exchanger 13, a first oil circuit and the oil-water heat exchanger 12 forms a second oil circuit, which are connected in parallel.
  • the amounts of oil can be adjusted, for example, depending on the temperature T of the oil of the transformer 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
EP13165063.2A 2012-05-10 2013-04-24 Agencement doté d'un transformateur Withdrawn EP2662871A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210207844 DE102012207844A1 (de) 2012-05-10 2012-05-10 Anordnung mit einem Transformator

Publications (2)

Publication Number Publication Date
EP2662871A2 true EP2662871A2 (fr) 2013-11-13
EP2662871A3 EP2662871A3 (fr) 2014-12-03

Family

ID=48190183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165063.2A Withdrawn EP2662871A3 (fr) 2012-05-10 2013-04-24 Agencement doté d'un transformateur

Country Status (2)

Country Link
EP (1) EP2662871A3 (fr)
DE (1) DE102012207844A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104749505A (zh) * 2015-03-30 2015-07-01 西南交通大学 一种牵引变压器绕组温升与油流速度关联性测试的方法
CN107403682A (zh) * 2017-09-20 2017-11-28 国网河南省电力公司原阳县供电公司 一种变压器降温装置
CN107610920A (zh) * 2017-09-27 2018-01-19 洛阳市星合特种变压器有限公司 一种具有减震散热功能变压器外壳
CN107817843A (zh) * 2017-11-27 2018-03-20 国网内蒙古东部电力有限公司 强迫油循环风冷变压器的冷却系统的控制方法及控制系统
CN112366065A (zh) * 2020-11-02 2021-02-12 天长市运臣电子工贸有限公司 一种焊接高压套管接线端子油浸式变压器
CN113946170A (zh) * 2021-10-14 2022-01-18 云南电网有限责任公司电力科学研究院 一种变压器冷却装置的自适应控制方法及系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122237B (de) * 1955-02-28 1962-01-18 Licentia Gmbh Einrichtung zum Ausnutzen der Verlustwaerme fluessigkeitsgekuehlter, elektrischer Geraete, wie Transformatoren od. dgl.
DE3025661C2 (de) * 1980-07-07 1982-11-04 Transformatoren Union Ag, 7000 Stuttgart Einrichtung zur Nutzbarmachung der Verlustwärme von im Inneren flüssigkeitsgekühlten Transformatoren oder Drosselspulen
JPS6062103A (ja) * 1983-09-16 1985-04-10 Meidensha Electric Mfg Co Ltd 油入電気機器の排熱利用装置
DE102008003672A1 (de) * 2008-01-09 2009-07-16 Areva Energietechnik Gmbh Elektrische Transformator-Einheit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104749505A (zh) * 2015-03-30 2015-07-01 西南交通大学 一种牵引变压器绕组温升与油流速度关联性测试的方法
CN107403682A (zh) * 2017-09-20 2017-11-28 国网河南省电力公司原阳县供电公司 一种变压器降温装置
CN107610920A (zh) * 2017-09-27 2018-01-19 洛阳市星合特种变压器有限公司 一种具有减震散热功能变压器外壳
CN107817843A (zh) * 2017-11-27 2018-03-20 国网内蒙古东部电力有限公司 强迫油循环风冷变压器的冷却系统的控制方法及控制系统
CN112366065A (zh) * 2020-11-02 2021-02-12 天长市运臣电子工贸有限公司 一种焊接高压套管接线端子油浸式变压器
CN113946170A (zh) * 2021-10-14 2022-01-18 云南电网有限责任公司电力科学研究院 一种变压器冷却装置的自适应控制方法及系统

Also Published As

Publication number Publication date
DE102012207844A1 (de) 2013-11-14
EP2662871A3 (fr) 2014-12-03

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