EP3057112A1 - Transformateur à huile - Google Patents

Transformateur à huile Download PDF

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Publication number
EP3057112A1
EP3057112A1 EP15155155.3A EP15155155A EP3057112A1 EP 3057112 A1 EP3057112 A1 EP 3057112A1 EP 15155155 A EP15155155 A EP 15155155A EP 3057112 A1 EP3057112 A1 EP 3057112A1
Authority
EP
European Patent Office
Prior art keywords
oil
vessel
supporting structure
transformer according
mechanical supporting
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
Application number
EP15155155.3A
Other languages
German (de)
English (en)
Other versions
EP3057112B1 (fr
Inventor
Thomas Schmidt
Ulrich DÜLLBERG
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.)
Hitachi Energy Ltd
Original Assignee
ABB 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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP15155155.3A priority Critical patent/EP3057112B1/fr
Publication of EP3057112A1 publication Critical patent/EP3057112A1/fr
Application granted granted Critical
Publication of EP3057112B1 publication Critical patent/EP3057112B1/fr
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Anticipated expiration legal-status Critical

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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
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • 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
    • H01F27/02—Casings
    • H01F27/025—Constructional details relating to cooling

Definitions

  • the invention is related to an oil transformer, comprising a high voltage transformer arranged in an oil filled vessel, an expansion vessel, a fluidic connection in between the expansion vessel and the oil filled vessel and at least one cooling means.
  • transformers, reactors and other electrical devices used in HV transmission networks of for example 380kV are typically arranged within an oil filled vessel.
  • the oil is on one hand insulation medium and on the other hand cooling medium.
  • An expansion vessel is fluidic connected with the oil filled vessel in order to handle the thermal expansion of the oil which arises during operation of the respective HV component, for example an oil transformer.
  • the wording "transformer” has also to be seen as synonym for a reactor and the wording "oil” covers also comparable insulation fluids such as Ester.
  • cooling means are foreseen for cooling the oil transformer, mainly heat exchangers, in particular an oil air heat exchanger or an oil water heat exchanger, or radiators which might be arranged as a radiator battery.
  • An HV oil transformer might have a rated power of several 100MVA, a weight of several 100t, a height of for example 6m and above and a length of 12m and above.
  • a rated power of several 100MVA a weight of several 100t
  • a height of for example 6m and above a height of for example 6m and above
  • a length of 12m and above a challenging task.
  • the attached components such as cooling means and expansion vessel are transported separately and assembled together with the main part of the oil transformer on site.
  • the attached components are normally individually designed with respect to individual requirements for the respective oil transformer.
  • the attached components typically differ in size and shape so that as well their transport as their assembly on site is rather individual and time consuming therewith.
  • seismic requirements for example with respect to groundwork and a stable arrangement, have to be fulfilled when assembling the components to be attached on site.
  • the objective of the invention is to provide an oil transformer with attached components, which are easier to transport and to easier assemble on site.
  • an oil transformer of the aforementioned kind This is characterized in that at least the expansion vessel is fixedly integrated in a mechanical supporting structure having four upper and four lower corner points arranged in the form of a square, wherein the corner points each are in the form of load transfer points and are arranged according to the dimensions of a CSC container.
  • CSC means Container Safety Convention wherein the standards related thereto are described for example in ISO 668.
  • Basic idea of the invention is to modularize the components to be attached to an oil transformer, for example an expansion vessel or the like. All modules have in common, that they are designed in that way, that they can be transported exactly like a CSC container.
  • a module comprises a mechanical supporting structure with outer dimensions like a CSC container and a component of an oil transformer fixedly integrated therein.
  • CSC containers are a widely known and standardized transportation medium.
  • a CSC container complies with standardized dimensions, for example a standardized length of 6,058m or 12,192m, wherein the height amounts 2,591 m and the width 2,438m.
  • a transport by ships, trucks or train to any location in the world is possible without any problem.
  • the transportation of the components to be attached to an oil transformer is facilitated therewith compared to the transportation in bulky cases as it is common now.
  • a respective component to be attached to an oil transformer is fixedly integrated in the mechanical supporting structure, which is not only of advantage for an easier transportation, moreover an easier installation on site is enabled therewith.
  • the mechanical supporting structure enables an easy placing on site on the four lower corner points. Any complex groundwork is as less required as a direct assembly with the vessel of the oil transformer. It is also possible to stack the mechanical supporting structures of several modules easily each on each other. Only respective fluidic connections in between the oil filled transformer vessel and the respective mechanical supporting structure have to be mounted on site.
  • the mechanical supporting structure is designed in that way, that it has a comparable life cycle than the oil transformer itself, so that the components fixedly integrated in the mechanical supporting structure can permanently remain therein.
  • the mechanical supporting structure of the expansion vessel comprises coupling means at its outer surface which are foreseen as a part of the fluidic connection in between the expansion vessel and the oil filled vessel.
  • the first part of the fluidic connection in between the expansion vessel and the coupling means is integrated in the mechanical supporting structure. So the second part from the coupling means to the oil filled vessel can easily be carried out comparable to a plug and play connection.
  • the at least one cooling means are fixedly integrated in a further respective mechanical supporting structure having four upper and four lower corner points arranged in the form of a square, wherein the corner points each are in the form of load transfer points and are arranged according to the dimensions of a CSC container. Integrating also the cooling means into a mechanical supporting structure of same dimensions increases the flexibility of the modular system. If required two or more modules with mechanical supporting structure and fixedly integrated cooling means can be attached to one oil transformer. Due to the identic dimensions the respective mechanical supporting structures respectively modules can be placed side by side or stacked each on each other.
  • the at least one cooling means are a heat exchanger, in particular an oil air heat exchanger or an oil water heat exchanger.
  • a fluidic connection in between the heat exchanger and the oil filled vessel is required.
  • a heat exchanger has not necessarily to be placed side by side to the oil filled vessel, but in order to keep the respective fluidic connection as short as possible it would be at least of advantage to place it in close proximity.
  • pumps or other components which are required to operate the heat exchanger are integrated in the respective module.
  • the mechanical supporting structure of the heat exchanger comprises coupling means at its outer face which are foreseen as a part of a fluidic connection in between the heat exchanger and the oil filled vessel.
  • the first part of the fluidic connection in between the cooling means and the coupling means is integrated in the mechanical supporting structure. So the second part from the coupling means to the oil filled vessel can easily be carried out comparable to a plug and play connection.
  • the at least one cooling means are one or more radiators. Radiators should be placed at least in close proximity to the oil filled vessel in order to increase the cooling effect of the air flow caused by the radiators. Radiators can be arranged as well with horizontal as with vertical alignment.
  • the radiators are divided into two groups, which are foreseen to be operated independently each from each other. This enables an easy adaptation of the cooling power to the actual need for cooling.
  • a respective mechanical supporting structure comprises at least one hollow bar, which is as well load bearing as foreseen as a part of the fluidic connection in between the expansion vessel respectively the cooling means and the oil filled vessel.
  • the oil transformer further means - in particular control equipment - are fixedly integrated in a further respective mechanical supporting structure having four upper and four lower corner points arranged in the form of a square, wherein the corner points each are in the form of load transfer points and are arranged according to the dimensions of a CSC container.
  • a further respective mechanical supporting structure having four upper and four lower corner points arranged in the form of a square, wherein the corner points each are in the form of load transfer points and are arranged according to the dimensions of a CSC container.
  • a suitable height for an expansion vessel is above the top of the oil filled vessel.
  • the height of a transformer might amount 5m and above the mechanical support structure with the expansion vessel could be placed on a stack with two other mechanical supporting structures so that it is in a suitable height.
  • the supporting structures below could have cooling means integrated therein, but in case that there is only need for one mechanical supporting structure with cooling means the other mechanical supporting structure could be even empty with the only purpose to lift the stack up.
  • At least two respective mechanical supporting structures are stacked each on each other.
  • a respective mechanical supporting structure with an expansion vessel is stacked over a respective mechanical supporting structure with cooling means.
  • At least one supporting structure is arranged side by side to the oil filled vessel. This reduces the length of the fluidic connections to the oil filled vessel and in case of the use of radiators as cooling means the cooling efficiency is increased therewith.
  • Figure 1 shows an exemplary mechanical support structure 10, which is carried out as a truss structure, for example by use of beams respectively hollow beams.
  • the mechanical support structure has the outer shape of a cuboid which is defined by four upper 12 and four lower 14 corner points.
  • the mechanical support structure comprises a base frame 16 which is designed in that way that an integrated component such as an oil filled expansion vessel can be worn. Traverses 18 increase the mechanical stability.
  • Figure 2 shows a stack of two mechanical support structures in a sketch 20.
  • a first 22 and a second 24 truss like mechanical support structure are stacked each on each other.
  • the support structures 22, 24 comprise each four upper 26 and four lower 28 corner points.
  • FIG. 3 shows an exemplary oil transformer 30.
  • a transformer with a transformer core 32 and transformer coils 34 is arranged in a vessel 36 which is filled with oil 38.
  • An HV bushing 40 is foreseen at the top of the vessel 36.
  • a stack of mechanical support structures 46, 48, 50 is foreseen left of the vessel 36.
  • An expansion vessel 42 which is partly filled with oil 44, is integrated in the first mechanical support structure 46.
  • a fluidic connection in between the expansion vessel 42 and the vessel 36 is realized by a first part 52 leading from the expansion vessel 42 to coupling means 54 and by a second part 56 leading from the coupling means 54 to the vessel 36.
  • the second mechanical support structure 48 has cooling means 58 integrated therein, in this case a heat exchanger.
  • the heat exchanger comprises several disk like cooling modules which are arranged side by side along the axial length of the mechanical support structure 48. Each cooling module is supplied by a main feed line 64 with oil to be cooled and which is returned after cooling over a main return line 66. Each cooling module has an own feed 60 and return 62 line which are connected to the respective main line 64 respectively 66.
  • the third mechanical support structure 50 comprises a fan 68 and control equipment 70, in particular a computer for logging and analyzing measured data of the oil transformer 30. Additionally the stack of the first 46 and second 48 mechanical support structures is lifted up therewith, so that the expansion vessel 42 of the first mechanical support structure is above the top of the vessel 36 therewith. The whole arrangement is placed on a ground floor 72.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
EP15155155.3A 2015-02-16 2015-02-16 Transformateur à huile Active EP3057112B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15155155.3A EP3057112B1 (fr) 2015-02-16 2015-02-16 Transformateur à huile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15155155.3A EP3057112B1 (fr) 2015-02-16 2015-02-16 Transformateur à huile

Publications (2)

Publication Number Publication Date
EP3057112A1 true EP3057112A1 (fr) 2016-08-17
EP3057112B1 EP3057112B1 (fr) 2020-05-20

Family

ID=52589238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15155155.3A Active EP3057112B1 (fr) 2015-02-16 2015-02-16 Transformateur à huile

Country Status (1)

Country Link
EP (1) EP3057112B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019137623A1 (fr) * 2018-01-15 2019-07-18 Siemens Aktiengesellschaft Unité de transformateur de puissance transportable
WO2020194128A1 (fr) * 2019-03-22 2020-10-01 Efacec Energia - Máquinas E Equipamentos Eléctricos S.A. Système modulaire appliqué à des transformateurs
US11908602B2 (en) 2020-07-13 2024-02-20 Hitachi Energy Ltd Static electric induction arrangement

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB383541A (en) * 1931-04-15 1932-11-17 Gen Electric Improvements in and relating to expansion chambers for fluid filled apparatus
GB845102A (en) * 1955-04-19 1960-08-17 Geoffrey Wells Leaper Improvements in or relating to pressure equalisation devices for closed vessels
GB945688A (en) * 1959-08-07 1964-01-08 Henri Josse Protection of expanding and contracting fluids contained in reservoirs against the action of oxygen and moisture
NL6503402A (fr) * 1964-03-18 1965-09-20
DE19614775A1 (de) * 1996-04-03 1997-10-09 Aeg Schorch Transformatoren Gm Ausdehnungsgefäß für die Kühl- und Isolierflüssigkeit eines Transformators oder einer Drossel
US20080196920A1 (en) * 2005-07-15 2008-08-21 Siemens Aktiengesellschaft Expansion Vessel for Stepping Switches
US20090242552A1 (en) * 2008-04-01 2009-10-01 Myers Gerald D Iso container having a load transfer plate
EP2133889A1 (fr) * 2008-06-12 2009-12-16 ABB Technology AG Bobine d'arrêt et agencement de vérification comportant la bobine d'arrêt
EP2169690A1 (fr) * 2008-09-24 2010-03-31 ABB Technology AG Compensateur de pression
US20140240901A1 (en) * 2011-11-02 2014-08-28 Abb Technology Ag High-voltage transformer module

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB383541A (en) * 1931-04-15 1932-11-17 Gen Electric Improvements in and relating to expansion chambers for fluid filled apparatus
GB845102A (en) * 1955-04-19 1960-08-17 Geoffrey Wells Leaper Improvements in or relating to pressure equalisation devices for closed vessels
GB945688A (en) * 1959-08-07 1964-01-08 Henri Josse Protection of expanding and contracting fluids contained in reservoirs against the action of oxygen and moisture
NL6503402A (fr) * 1964-03-18 1965-09-20
DE19614775A1 (de) * 1996-04-03 1997-10-09 Aeg Schorch Transformatoren Gm Ausdehnungsgefäß für die Kühl- und Isolierflüssigkeit eines Transformators oder einer Drossel
US20080196920A1 (en) * 2005-07-15 2008-08-21 Siemens Aktiengesellschaft Expansion Vessel for Stepping Switches
US20090242552A1 (en) * 2008-04-01 2009-10-01 Myers Gerald D Iso container having a load transfer plate
EP2133889A1 (fr) * 2008-06-12 2009-12-16 ABB Technology AG Bobine d'arrêt et agencement de vérification comportant la bobine d'arrêt
EP2169690A1 (fr) * 2008-09-24 2010-03-31 ABB Technology AG Compensateur de pression
US20140240901A1 (en) * 2011-11-02 2014-08-28 Abb Technology Ag High-voltage transformer module

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BERNT BJERKREIM ET AL: "Ormen Lange Subsea Compression Pilot", OFFSHORE TECHNOLOGY CONFERENCEM,, no. OTC 18969, 30 April 2007 (2007-04-30), pages 1 - 11, XP007921105 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019137623A1 (fr) * 2018-01-15 2019-07-18 Siemens Aktiengesellschaft Unité de transformateur de puissance transportable
WO2020194128A1 (fr) * 2019-03-22 2020-10-01 Efacec Energia - Máquinas E Equipamentos Eléctricos S.A. Système modulaire appliqué à des transformateurs
US11908602B2 (en) 2020-07-13 2024-02-20 Hitachi Energy Ltd Static electric induction arrangement

Also Published As

Publication number Publication date
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