EP3273453A1 - High voltage assembly and method to operate the voltage assembly - Google Patents
High voltage assembly and method to operate the voltage assembly Download PDFInfo
- Publication number
- EP3273453A1 EP3273453A1 EP16180634.4A EP16180634A EP3273453A1 EP 3273453 A1 EP3273453 A1 EP 3273453A1 EP 16180634 A EP16180634 A EP 16180634A EP 3273453 A1 EP3273453 A1 EP 3273453A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compartment
- high voltage
- voltage assembly
- fluid connection
- assembly
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims abstract description 78
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 238000005086 pumping Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
Definitions
- the present invention relates to a high voltage assembly according to the preamble of claim 1 and to a method to operate the high voltage assembly according to the preamble of claim 11.
- Known high voltage assemblies like oil immersed power transformers, or oil immersed reactors, comprise a conservator mounted above and/or besides a ceiling of the respective high voltage assembly.
- the conservator is intended to receive an expanding oil volume in the event that the temperature of the oil in a compartment containing an active component rises. When the oil temperature drops, the oil flows back into the compartment by means of the gravitational force of the oil itself.
- AT 69108 B describes a known conservator for an oil immersed high voltage transformer , which is arranged at a distance, but laterally to, the compartment comprising the active component.
- the invention resides in a high voltage assembly, in particular, a high voltage transformer or a high voltage reactor, comprising a first compartment containing an active component and a second compartment.
- the first compartment is connected to the second compartment via a return fluid connection, wherein the return fluid connection comprises a pumping means adapted to deliver insulation fluid from the second compartment to the first compartment.
- the return fluid connection allows the second compartment, which forms a conservator, to be placed below a nominal or maximum insulation fluid level for the first compartment. Consequently, the location of the second compartment can be selected to reduce overall costs for the high voltage assembly.
- the second compartment is arranged adjacent to the first compartment. Therefore, in comparison with a traditional conservator arrangement, more space above the ceiling of the first compartment will be available.
- the second compartment forms an integral part of a metal enclosure of the high voltage assembly, wherein the metal enclosure comprises the first compartment.
- the second compartment results in reduced costs, as circumstantial assembly in the manufacturing stage and in the commissioning stage of the high voltage assembly are avoided.
- transporting of an insulation fluid in separate tanks can be avoided and heavy equipment such as a crane for reassembling, and for respective oil treatment, are not needed.
- the adaption of a support structure for the high voltage assembly, due to an overhanging conservator is no longer necessary. Therefore, manufacturing and transportation costs before commissioning on site can be reduced.
- the more compact design of the high voltage assembly allows a more flexible design of the ceiling of the high voltage assembly. For example, there is more space available to place the high voltage bushings at a greater distance from each other.
- first compartment and the second compartment are separated by a conjoint wall. This also reduces costs due to reduced steel consumption.
- a further advantageous embodiment is characterised in that the first compartment and the second compartment are connected via a pressure relief valve.
- the pressure relief valve transports the oil directly into the second compartment. Consequently, there will be no oil leakage into the environment should an overpressure event occur.
- the overflow fluid connection comprises an overflow section arranged above a ceiling of the first compartment.
- This overflow section defines the maximum insulation fluid level of the first compartment and therefore serves to conduct insulation fluid from the first compartment to the second compartment.
- a further embodiment is characterised in that the return fluid connection comprises a return section arranged above the overflow section.
- the return fluid connection will not be exposed to rising insulation fluid from the first compartment.
- a Buchholz relay is connected to the first compartment, and the Buchholz relay is connected to the overflow fluid connection and/or the return fluid connection. Therefore, failures inside the first compartment can be detected via the Buchholz relay.
- the second compartment acts like a traditional conservator.
- the second compartment comprises a breather.
- the breather allows a variable insulation fluid level inside the second compartment.
- Another embodiment is characterised in that a level sensor is arranged and adapted to determine a fluid level of the first compartment, and that the pumping means is adapted to pump insulation fluid from the second compartment to the first compartment in dependence on the fluid level. Therefore, the fluid level of the first compartment is controlled by means of the level sensor and the pumping means, to guarantee a fluid level sufficient for maintaining operability of the high voltage assembly.
- a method to operate a high voltage assembly in particular, a high voltage transformer or a high voltage reactor, the high voltage assembly comprising a first compartment containing an active component and a second compartment.
- the first compartment is connected to the second compartment via a return fluid connection.
- a pumping means of the return fluid connection delivers insulation fluid from the second compartment to the first compartment.
- FIG. 1 shows a schematic sectional view of a high voltage assembly 2.
- the high voltage assembly 2 may be a high voltage transformer, or a high voltage reactor, such as a series reactor, a shunt reactor or a smoothing reactor.
- the high voltage assembly 2 comprises an active component 4, for example a transformer core and transformer windings.
- the high voltage assembly 2 comprises a metal enclosure 6 which, in an operational state, is filled with an insulation fluid like oil. In the operational state, the metal enclosure 6 is connected to ground potential.
- High voltage bushings 8A, 8B and 8C are arranged on a ceiling 10 of the metal enclosure 6 and extend therefrom.
- the metal enclosure 6 has an essentially cuboid-like outer shape.
- the ceiling 10 of the metal enclosure 6 is arranged in a horizontally upward z-direction.
- the metal enclosure 6 comprises a first compartment 12 and second compartment 14, both having an essentially cuboid like form.
- the first compartment 12 and the second compartment 14 are separated by a conjoint wall 16.
- the conjoint wall 16 comprises a pressure relief valve 18.
- the pressure relief valve 18 remains in a closed state until a pressure in the first compartment 12 exceeds a threshold. When the pressure in the first compartment exceeds the threshold, the pressure relief valve 18 switches to an open state and allows a transport of insulation fluid from the first compartment 12 to the second compartment 14.
- the second compartment 14 can be also referred to as a conservator.
- the second compartment 14 has a maximum oil-expansion volume which depends on the oil volume in the first compartment 12. It should be understood that a plurality of second compartments 14 can surround the first compartment 12.
- the second compartment 14 comprises a breather 19 which connects the second compartment 14 to the ambient environment and allows a flexible insulation fluid level 20 inside the second compartment 14.
- the breather 19 is adapted to reduce moisture of natural air of the ambient environment flowing into the second compartment 14.
- the outer walls of the second compartment 14 and all walls of the metal enclosure are preferably made of steel and are essentially not flexible.
- a Buchholz relay 22 is connected via a fluid connection 24 to the first compartment 12.
- the Buchholz relay 22 is arranged above the ceiling 10 of the metal enclosure 6.
- a further fluid connection 26 connects the Buchholz relay 22 to a branch 28.
- the branch 28 is arranged above the Buchholz relay 22 and is connected to the second compartment 14 via an overflow fluid connection 30.
- the overflow fluid connection 30 ends in an opening 32, the opening 32 being arranged in a lower portion 34 of the second compartment 14.
- the overflow fluid connection 30 comprises an overflow section 36, wherein the overflow section 36 is arranged at the horizontally most upward position of the overflow fluid connection 30.
- the overflow section 36 defines a maximum insulation fluid level 38 for the first compartment 12.
- the insulation fluid in the first compartment 12 expands due to a rising temperature, the fluid level of the first compartment 12 also rises.
- the insulation fluid reaches the maximum insulation fluid level 38, the insulation fluid overflows into the second compartment 14 by means of the overflow fluid connection 30.
- the branch 28 is connected to the second compartment 14 by means of a return fluid connection 40.
- the return fluid connection 40 comprises a pumping means 42 which is activated by an activation signal 44.
- the return fluid connection 40 comprises a return fluid section 46 which is arranged above the overflow section 36.
- the ceiling 10 of the first compartment 12 is arranged between the base or support structure of the high voltage assembly 2 and the overflow section 36.
- the return section 46 for example, is located on a side of the overflow section 36 being opposed to the foundation of the high voltage assembly 2.
- a level sensor 50 is arranged inside part of the overflow fluid connection 30 that extends vertically from the branch 28. If the insulation fluid level of the first compartment 12 drops below a threshold level 52, a threshold signal 54 is generated and sent to a control unit 56. Therefore, the level sensor 50 is arranged and adapted to determine a fluid level of the first compartment 12. It should be understood that the level sensor 50 can alternatively be arranged in the return fluid connection 40, or at another respective position, at which the level sensor 50 can measure and determine, whether the fluid level drops below the threshold level 52.
- the high voltage assembly 2 may comprise a plurality of second compartments 14.
- the overflow fluid connection 30 and the return fluid connection 40 can be combined into a single fluid connection connecting the first compartment 12 and the second compartment 14 for exchanging insulation fluid.
- the pumping means 42 is arranged outside of the metal enclosure 6 for maintenance reasons. Accordingly the return fluid connection 40 runs at least in sections outside of the metal enclosure 6.
- the pumping means 42 comprises at least two pumping units, which are mechanically independent. This provides redundancy and contributes to a reduction of failure probability of the whole high voltage assembly.
- Figure 2 shows a schematic flow diagram 60.
- the steps are executed by means of the control unit 56.
- the operation is initiated.
- a determination is made whether the fluid level is below the threshold level 52 by means of the control unit 56 in dependence of the threshold signal 54. If the insulation fluid level is above the threshold level 52, block 64 is executed once more. If the insulation fluid level is below or equals the threshold level 52, then block 66 is executed.
- the pumping means 42 commences to pump insulation fluid contained in the second compartment 14 to the first compartment 12. After executing block 66, the process proceeds to block 68.
- block 68 it is determined by means of the level sensor 50 whether the insulation fluid level is above the threshold level 52. If the insulation fluid level is not above the threshold level 52, then block 68 is executed again. If the insulation fluid level is above the threshold level 52, the process proceeds to block 70. In a block 70, the pumping means 42 is stopped, which results in no fluid being carried to the first compartment 12. After executing block 70, the process proceeds to block 64.
- block 70 comprises a timer, according to which the pumping means 42 is stopped after a certain time period. The time period starts on proceeding to block 60. Therefore, the pumping means 42 is stopped after the end of the time period which started at point in time when it is determined that the fluid level has risen above the threshold level 52.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
Description
- The present invention relates to a high voltage assembly according to the preamble of claim 1 and to a method to operate the high voltage assembly according to the preamble of claim 11.
- Known high voltage assemblies, like oil immersed power transformers, or oil immersed reactors, comprise a conservator mounted above and/or besides a ceiling of the respective high voltage assembly. The conservator is intended to receive an expanding oil volume in the event that the temperature of the oil in a compartment containing an active component rises. When the oil temperature drops, the oil flows back into the compartment by means of the gravitational force of the oil itself.
-
AT 69108 B - It is an object of the present invention to provide an improved high voltage assembly.
- In a first aspect, the invention resides in a high voltage assembly, in particular, a high voltage transformer or a high voltage reactor, comprising a first compartment containing an active component and a second compartment. The first compartment is connected to the second compartment via a return fluid connection, wherein the return fluid connection comprises a pumping means adapted to deliver insulation fluid from the second compartment to the first compartment.
- The return fluid connection allows the second compartment, which forms a conservator, to be placed below a nominal or maximum insulation fluid level for the first compartment. Consequently, the location of the second compartment can be selected to reduce overall costs for the high voltage assembly.
- In one advantageous embodiment, the second compartment is arranged adjacent to the first compartment. Therefore, in comparison with a traditional conservator arrangement, more space above the ceiling of the first compartment will be available.
- Another advantageous embodiment is characterised in that the second compartment forms an integral part of a metal enclosure of the high voltage assembly, wherein the metal enclosure comprises the first compartment. By forming an integral part of the metal enclosure, the second compartment results in reduced costs, as circumstantial assembly in the manufacturing stage and in the commissioning stage of the high voltage assembly are avoided. In particular, transporting of an insulation fluid in separate tanks can be avoided and heavy equipment such as a crane for reassembling, and for respective oil treatment, are not needed. Furthermore, the adaption of a support structure for the high voltage assembly, due to an overhanging conservator, is no longer necessary. Therefore, manufacturing and transportation costs before commissioning on site can be reduced.
- In addition the dimensions of the installed high voltage assembly on site are reduced and the support structure required will be smaller. Consequently, the whole substation comprising the proposed high voltage assembly will benefit.
- The more compact design of the high voltage assembly allows a more flexible design of the ceiling of the high voltage assembly. For example, there is more space available to place the high voltage bushings at a greater distance from each other.
- In an advantageous embodiment, the first compartment and the second compartment are separated by a conjoint wall. This also reduces costs due to reduced steel consumption.
- A further advantageous embodiment is characterised in that the first compartment and the second compartment are connected via a pressure relief valve. In the event of an overpressure in the first compartment, the pressure relief valve transports the oil directly into the second compartment. Consequently, there will be no oil leakage into the environment should an overpressure event occur.
- In yet another advantageous embodiment, the overflow fluid connection comprises an overflow section arranged above a ceiling of the first compartment. This overflow section defines the maximum insulation fluid level of the first compartment and therefore serves to conduct insulation fluid from the first compartment to the second compartment.
- A further embodiment is characterised in that the return fluid connection comprises a return section arranged above the overflow section. Advantageously, the return fluid connection will not be exposed to rising insulation fluid from the first compartment.
- In one further embodiment, a Buchholz relay is connected to the first compartment, and the Buchholz relay is connected to the overflow fluid connection and/or the return fluid connection. Therefore, failures inside the first compartment can be detected via the Buchholz relay. For the Buchholz relay, the second compartment acts like a traditional conservator.
- In another embodiment, the second compartment comprises a breather. The breather allows a variable insulation fluid level inside the second compartment.
- Another embodiment is characterised in that a level sensor is arranged and adapted to determine a fluid level of the first compartment, and that the pumping means is adapted to pump insulation fluid from the second compartment to the first compartment in dependence on the fluid level. Therefore, the fluid level of the first compartment is controlled by means of the level sensor and the pumping means, to guarantee a fluid level sufficient for maintaining operability of the high voltage assembly.
- According to another aspect of the invention, there is provided a method to operate a high voltage assembly, in particular, a high voltage transformer or a high voltage reactor, the high voltage assembly comprising a first compartment containing an active component and a second compartment. The first compartment is connected to the second compartment via a return fluid connection. A pumping means of the return fluid connection delivers insulation fluid from the second compartment to the first compartment.
-
-
Figure 1 shows a schematic sectional view of a high voltage assembly; and -
Figure 2 shows a schematic flow diagram of a method according to an embodiment of the present invention. -
Figure 1 shows a schematic sectional view of ahigh voltage assembly 2. Thehigh voltage assembly 2 may be a high voltage transformer, or a high voltage reactor, such as a series reactor, a shunt reactor or a smoothing reactor. Thehigh voltage assembly 2 comprises anactive component 4, for example a transformer core and transformer windings. Thehigh voltage assembly 2 comprises ametal enclosure 6 which, in an operational state, is filled with an insulation fluid like oil. In the operational state, themetal enclosure 6 is connected to ground potential.High voltage bushings ceiling 10 of themetal enclosure 6 and extend therefrom. Themetal enclosure 6 has an essentially cuboid-like outer shape. Theceiling 10 of themetal enclosure 6 is arranged in a horizontally upward z-direction. - The
metal enclosure 6 comprises afirst compartment 12 andsecond compartment 14, both having an essentially cuboid like form. Thefirst compartment 12 and thesecond compartment 14 are separated by aconjoint wall 16. Theconjoint wall 16 comprises apressure relief valve 18. Thepressure relief valve 18 remains in a closed state until a pressure in thefirst compartment 12 exceeds a threshold. When the pressure in the first compartment exceeds the threshold, thepressure relief valve 18 switches to an open state and allows a transport of insulation fluid from thefirst compartment 12 to thesecond compartment 14. Thesecond compartment 14 can be also referred to as a conservator. Thesecond compartment 14 has a maximum oil-expansion volume which depends on the oil volume in thefirst compartment 12. It should be understood that a plurality ofsecond compartments 14 can surround thefirst compartment 12. - The
second compartment 14 comprises abreather 19 which connects thesecond compartment 14 to the ambient environment and allows a flexibleinsulation fluid level 20 inside thesecond compartment 14. Thebreather 19 is adapted to reduce moisture of natural air of the ambient environment flowing into thesecond compartment 14. The outer walls of thesecond compartment 14 and all walls of the metal enclosure, are preferably made of steel and are essentially not flexible. - A
Buchholz relay 22 is connected via afluid connection 24 to thefirst compartment 12. TheBuchholz relay 22 is arranged above theceiling 10 of themetal enclosure 6. Afurther fluid connection 26 connects theBuchholz relay 22 to abranch 28. Thebranch 28 is arranged above theBuchholz relay 22 and is connected to thesecond compartment 14 via anoverflow fluid connection 30. Theoverflow fluid connection 30 ends in anopening 32, theopening 32 being arranged in alower portion 34 of thesecond compartment 14. Theoverflow fluid connection 30 comprises anoverflow section 36, wherein theoverflow section 36 is arranged at the horizontally most upward position of theoverflow fluid connection 30. Theoverflow section 36 defines a maximuminsulation fluid level 38 for thefirst compartment 12. When the insulation fluid in thefirst compartment 12 expands due to a rising temperature, the fluid level of thefirst compartment 12 also rises. When the insulation fluid reaches the maximuminsulation fluid level 38, the insulation fluid overflows into thesecond compartment 14 by means of theoverflow fluid connection 30. - The
branch 28 is connected to thesecond compartment 14 by means of areturn fluid connection 40. Thereturn fluid connection 40 comprises a pumping means 42 which is activated by anactivation signal 44. Furthermore, thereturn fluid connection 40 comprises areturn fluid section 46 which is arranged above theoverflow section 36. - Throughout this description the wording that a first feature is arranged above a second feature comprises that the first feature is located on a side of the second feature being opposed to the base or support structure of the
high voltage assembly 2. More specific, a horizontal plane that is essentially parallel to an upper surface level of the base or support structure of thehigh voltage assembly 2 lies between the first feature and the second feature and the second feature is arranged between the first feature and the base or support structure of the high voltage assembly. - For example, the
ceiling 10 of thefirst compartment 12 is arranged between the base or support structure of thehigh voltage assembly 2 and theoverflow section 36. Thereturn section 46, for example, is located on a side of theoverflow section 36 being opposed to the foundation of thehigh voltage assembly 2. - A
level sensor 50 is arranged inside part of theoverflow fluid connection 30 that extends vertically from thebranch 28. If the insulation fluid level of thefirst compartment 12 drops below athreshold level 52, athreshold signal 54 is generated and sent to acontrol unit 56. Therefore, thelevel sensor 50 is arranged and adapted to determine a fluid level of thefirst compartment 12. It should be understood that thelevel sensor 50 can alternatively be arranged in thereturn fluid connection 40, or at another respective position, at which thelevel sensor 50 can measure and determine, whether the fluid level drops below thethreshold level 52. - It should also be understood that the
high voltage assembly 2 may comprise a plurality of second compartments 14. Of course, theoverflow fluid connection 30 and thereturn fluid connection 40 can be combined into a single fluid connection connecting thefirst compartment 12 and thesecond compartment 14 for exchanging insulation fluid. - According to a preferred embodiment, the pumping means 42 is arranged outside of the
metal enclosure 6 for maintenance reasons. Accordingly thereturn fluid connection 40 runs at least in sections outside of themetal enclosure 6. - According to another preferred embodiment, the pumping means 42 comprises at least two pumping units, which are mechanically independent. This provides redundancy and contributes to a reduction of failure probability of the whole high voltage assembly.
-
Figure 2 shows a schematic flow diagram 60. The steps are executed by means of thecontrol unit 56. Inblock 62, the operation is initiated. Inblock 64, a determination is made whether the fluid level is below thethreshold level 52 by means of thecontrol unit 56 in dependence of thethreshold signal 54. If the insulation fluid level is above thethreshold level 52, block 64 is executed once more. If the insulation fluid level is below or equals thethreshold level 52, then block 66 is executed. Inblock 66, the pumping means 42 commences to pump insulation fluid contained in thesecond compartment 14 to thefirst compartment 12. After executingblock 66, the process proceeds to block 68. - In
block 68, it is determined by means of thelevel sensor 50 whether the insulation fluid level is above thethreshold level 52. If the insulation fluid level is not above thethreshold level 52, then block 68 is executed again. If the insulation fluid level is above thethreshold level 52, the process proceeds to block 70. In ablock 70, the pumping means 42 is stopped, which results in no fluid being carried to thefirst compartment 12. After executingblock 70, the process proceeds to block 64. - According to an embodiment, block 70 comprises a timer, according to which the pumping means 42 is stopped after a certain time period. The time period starts on proceeding to block 60. Therefore, the pumping means 42 is stopped after the end of the time period which started at point in time when it is determined that the fluid level has risen above the
threshold level 52.
Claims (12)
- A high voltage assembly (2), in particular, a high voltage transformer or a high voltage reactor, comprising:- a first compartment (12) containing an active component (4); and- a second compartment (14),wherein the high voltage assembly (2) is characterized in that thee first compartment (12) is connected to the second compartment (14) via a return fluid connection (40), and wherein the return fluid connection (40) comprises a pumping means (42) is adapted to deliver insulation fluid from the second compartment (14) to the first compartment (12).
- The high voltage assembly (2) according to claim 1, wherein the second compartment (14) is arranged adjacent to the first compartment (12).
- The high voltage assembly (2) according to claim 1 or 2, wherein the second compartment (14) forms an integral part of a metal enclosure (6) of the high voltage assembly (2), and wherein the metal enclosure comprises the first compartment (12).
- The high voltage assembly (2) according to any of the preceding claims, wherein the first compartment (12) and the second compartment (14) are separated by a conjoint wall (16).
- The high voltage assembly (2) according to any of the preceding claims, wherein the first compartment (12) and the second compartment (14) are connected via a pressure relief valve (18).
- The high voltage assembly (2) according to any of the preceding claims, wherein an overflow fluid connection (30) is arranged above a ceiling (10) of the first compartment (12).
- The high voltage assembly (2) according to claim 6, wherein the return fluid connection (40) comprises a return section (46) arranged above the overflow section (36).
- The high voltage assembly (2) according to any of the preceding claims, wherein a Buchholz relay (22) is connected to the first compartment (12), and wherein the Buchholz relay (22) is connected to the overflow fluid connection (30) and/or the return fluid connection (40).
- The high voltage assembly (2) according to any of the preceding claims, wherein the second compartment (14) comprises a breather (18).
- The high voltage assembly (2) according to any of the preceding claims, wherein a level sensor (50) is arranged and adapted to determine a fluid level of the first compartment (12), and wherein the pumping means (42) is adapted to pump insulation fluid from the second compartment (14) to the first compartment (12) in dependence on the determined fluid level.
- A method to operate a high voltage assembly (2), in particular, a high voltage transformer or a high voltage reactor, the high voltage assembly (2) comprising:- a first compartment (12) containing an active component; and- a second compartment (14),the method being characterized in that
the first compartment (12) is connected with the second compartment (14) via a return fluid connection (40), and wherein a pumping means (42) of the return fluid connection (40) delivers insulation fluid from the second compartment (14) to the first compartment (12). - The method according to claim 11, being adapted to operate a high voltage assembly (2) according to any of claims 1 to 10.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16180634.4A EP3273453B1 (en) | 2016-07-21 | 2016-07-21 | High voltage assembly and method to operate the voltage assembly |
CN201780045128.1A CN109478458B (en) | 2016-07-21 | 2017-07-18 | High voltage assembly and method of operating the same |
PCT/EP2017/068151 WO2018015397A1 (en) | 2016-07-21 | 2017-07-18 | High voltage assembly and method to operate the voltage assembly |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16180634.4A EP3273453B1 (en) | 2016-07-21 | 2016-07-21 | High voltage assembly and method to operate the voltage assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3273453A1 true EP3273453A1 (en) | 2018-01-24 |
EP3273453B1 EP3273453B1 (en) | 2020-05-27 |
Family
ID=56787243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16180634.4A Active EP3273453B1 (en) | 2016-07-21 | 2016-07-21 | High voltage assembly and method to operate the voltage assembly |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3273453B1 (en) |
CN (1) | CN109478458B (en) |
WO (1) | WO2018015397A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT69108B (en) | 1912-11-01 | 1915-06-25 | Rheinische Metallw & Maschf | Gun for aircraft. |
US2340898A (en) * | 1941-11-29 | 1944-02-08 | Gen Electric | Electric apparatus |
US6052060A (en) * | 1998-03-09 | 2000-04-18 | Filmax, Inc. | Temperature monitor for electrical switchgear |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2304989Y (en) * | 1996-03-22 | 1999-01-20 | 云南变压器厂 | Fully closed transformer with auxiliary oil tank |
CA2701454A1 (en) * | 2010-04-26 | 2011-10-26 | Insoil Canada Ltd. | Apparatus and method of dehydration of transformer insulating oil by continuous fluid flow |
CN202453746U (en) * | 2012-02-23 | 2012-09-26 | 宁波东博电力科技有限公司 | Automatic oil level regulating system of transformer |
CN204229989U (en) * | 2014-12-09 | 2015-03-25 | 张玮琦 | The insulating oil cooling back installation of locomotive transformer |
CN204792338U (en) * | 2015-07-31 | 2015-11-18 | 国家电网公司 | Transformer oiling system based on optical sensor |
-
2016
- 2016-07-21 EP EP16180634.4A patent/EP3273453B1/en active Active
-
2017
- 2017-07-18 WO PCT/EP2017/068151 patent/WO2018015397A1/en active Application Filing
- 2017-07-18 CN CN201780045128.1A patent/CN109478458B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT69108B (en) | 1912-11-01 | 1915-06-25 | Rheinische Metallw & Maschf | Gun for aircraft. |
US2340898A (en) * | 1941-11-29 | 1944-02-08 | Gen Electric | Electric apparatus |
US6052060A (en) * | 1998-03-09 | 2000-04-18 | Filmax, Inc. | Temperature monitor for electrical switchgear |
Also Published As
Publication number | Publication date |
---|---|
WO2018015397A1 (en) | 2018-01-25 |
EP3273453B1 (en) | 2020-05-27 |
CN109478458A (en) | 2019-03-15 |
CN109478458B (en) | 2022-10-25 |
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