EP4197013A1 - Laststufenschalter und stufentransformator mit laststufenschalter - Google Patents
Laststufenschalter und stufentransformator mit laststufenschalterInfo
- Publication number
- EP4197013A1 EP4197013A1 EP21748590.3A EP21748590A EP4197013A1 EP 4197013 A1 EP4197013 A1 EP 4197013A1 EP 21748590 A EP21748590 A EP 21748590A EP 4197013 A1 EP4197013 A1 EP 4197013A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- load tap
- tap changer
- transformer
- flange
- flange module
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
-
- 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
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/025—Constructional details of transformers or reactors with tapping on coil or windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
-
- 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
- H01H9/0027—Operating mechanisms
-
- 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
- H01H2009/005—Details concerning the sealing of the oil filled casings
Definitions
- the invention relates to an on-load tap changer for uninterrupted load switching between different winding taps of a tapped transformer.
- the invention relates to a tapped transformer with an on-load tap changer for uninterrupted load switching between different winding taps of the tapped transformer.
- On-load tap changers are known from the prior art and usually have a diverter switch and a selector.
- the diverter switch with the vacuum interrupters and the transition resistors is arranged in a cylindrical vessel.
- the selector is made up of a large number of sticks arranged in a circle. Contacts are arranged in different levels on these bars, which serve as connections for winding taps of a control winding. Inside the selector, two selector arms are attached to a switching column. These make contact with the contacts on the rods. Diverter switch and selector are connected to each other via a gear.
- the on-load tap-changer is attached to the transformer cover.
- the tap changer head is screwed to the underside of the transformer cover.
- a tap changer cover is screwed onto the transformer cover over the tap changer.
- the object of the invention is to provide an on-load tap changer that is simple and compact in design and can therefore be installed in a tapped transformer in a simple and space-saving manner.
- a further object of the invention is to provide a tapped transformer with an on-load tap changer that is simple and compact.
- the invention proposes an on-load tap changer for uninterrupted load switching between different winding taps of a stepped transformer, comprising a flange module and a union nut, wherein the on-load tap changer can be fastened to the stepped transformer by means of the union nut and the flange module.
- the simple solution of using a flange module and a union nut to fasten the on-load tap-changer in a tap-changer makes assembly particularly easy.
- the flange module is routed from inside the tapped transformer through an opening in the housing wall. A part or a first area of the flange module protrudes from the housing.
- the union nut is placed on the flange module so that the flange module is pressed from the outside against the inside of the wall of the housing.
- connection between the flange module outside the housing and the union nut can be designed in any way and can be implemented, for example, by means of threads, partial threads, snap hooks, locking lugs or a bayonet lock.
- the union nut can thus be screwed, clipped or pushed onto the flange module.
- the connection between the union nut can be made by positive locking and/or force locking.
- the union nut can be configured in any way and can have an internal thread, for example, which is screwed onto an external thread of the flange module.
- the flange module and/or the union nut can be made of an insulating material, preferably plastic.
- the seal can then be arranged, for example, between the inner wall of the housing and the flange of the flange module.
- the on-load tap changer can be designed in any way and can have, for example, a control unit and/or a communication unit and/or a drive and/or a diverter switch and/or a selector.
- the communication unit and/or the control unit can be arranged in a first area of the flange module, which is located at least partially outside the tapped transformer.
- the drive and/or the diverter switch and/or the selector can be arranged in a second area of the flange module, which is arranged at least partially inside the tapped transformer.
- the diverter switch has a plurality of semiconductor switching elements and the selector has a plurality of mechanical switches.
- first area and the second area of the flange module are separated from one another by a wall.
- the on-load tap changer can be designed in any way and can be, for example, a conventional on-load tap changer with mechanical contacts or a hybrid tap changer with mechanical contacts and semiconductor switching elements.
- the invention proposes a step transformer with an on-load tap changer, a housing and an active part with winding taps, wherein the on-load tap changer has a flange module and a union nut, the on-load tap changer can be fastened to the step transformer by means of the union nut and the flange module and the on-load tap changer via and/or or is arranged next to the active part.
- the step transformer is particularly easy to install. After inserting the active part, the on-load tap-changer can be connected to the winding taps with little effort.
- the flange module is then inserted through an opening in the wall of the housing up to the flange and fixed from the outside with the union nut. Special tools are not required for assembly.
- the stepped transformer can be designed in any way and can be designed, for example, as a single-phase or multi-phase distribution transformer and/or pole-mounted transformer and/or service transformer and/or pad-mounted transformer and/or pole-mounted transformer.
- This step transformer can preferably be used for voltages of up to 36 kV.
- FIG. 1 shows an on-load tap changer 1 for uninterrupted load switching between different winding taps 31 of a tapped transformer 30.
- the on-load tap changer 1 is horizontal on the inside above the active part 32 of the tapped transformer
- the on-load tap changer 1 can be arranged vertically, in which case it then projects out of the housing 6 or the cover 7 at the top.
- the on-load tap changer 1 is connected to the respective winding taps 31 of the active part 32 via lines.
- the stepped transformer 30 is a single-phase or multi-phase distribution transformer, which can be designed in particular as a so-called pole-mounted transformer, service transformer, pad-mounted transformer or pole-mounted transformer. This step transformer is preferably used for voltages of up to 36 kV.
- FIG. 2 shows a detailed sectional view of the on-load tap changer 1 for uninterrupted load switching between different winding taps
- the on-load tap changer 1 has a flange module 2, which is essentially divided into two areas.
- the first area 10 is separated from the second area 20 by a wall 4 .
- the first area 10 of the on-load tap changer 1 is located outside the tapped transformer 30.
- the second area 20 of the on-load tap changer 1 is located inside the tapped transformer 30.
- the flange module 2 of the on-load tap changer 1 is inserted through an opening 3 of the housing 6, here a wall 4 of the tapped transformer 30. This is possible because the flange module 2 and thus the on-load tap changer 1 in the first area 10 have a smaller or approximately the same diameter as the diameter of the opening 3 in the wall 4 of the tapped transformer 30.
- the flange module 2 has a flange 5, the diameter of which is larger than the diameter of the opening 3.
- the flange module 2 can essentially only protrude up to this flange 5 through the opening 3 of the wall 4.
- the flange 5 has a first surface 5.1, which points to the inside 4.1 of the wall 4 or housing 6. Between the first surface 5.1 and the inside 4.1 of the wall 4 in the installed state of the on-load tap changer 1 one or more seals in the form of one or more sealing rings 21 may be arranged.
- the seal or sealing ring 21 is thus arranged between the flange module 2 and the housing 6 . This prevents transformer oil that is inside the tapped transformer 30 from escaping.
- the first region 10 of the flange module 2, which is arranged on the outside 4.2 of the step transformer 30, has an at least partially formed thread 11 running on the circumference.
- the on-load tap changer 1 is fastened to the housing 6 of the tap-changer 30 by means of a union nut 12, which has an internal thread 13.
- the connection between the union nut 12 and the flange module 2 can also be implemented by means of locking lugs or the like.
- the union nut 12 is always placed on the flange module 2 in order to fix it.
- the flange module 2 is supported on the inside of the wall 4 of the tapped transformer 30 via the flange 5 .
- a cover cap 14 is clipped onto the on-load tap changer from the outside. This serves as protection against the weather.
- the flange module 2 forms part of the on-load tap changer 1.
- the control unit 40 and the communication unit 41 are arranged. These are accessible from the outside, ie outside of the tapped transformer 30 .
- the second area 20 which is located inside the tapped transformer 30, the drive 42, the diverter switch 43 and the selector 44 are arranged. While the selector 44 is made up of mechanical switches/contacts, the diverter switch 43 has semiconductor switching elements.
- the on-load tap changer 1 is therefore a so-called hybrid on-load tap changer.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Control Of Electrical Variables (AREA)
- Protection Of Transformers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020122444.3A DE102020122444A1 (de) | 2020-08-27 | 2020-08-27 | Laststufenschalter und Stufentransformator mit Laststufenschalter |
PCT/EP2021/070382 WO2022042955A1 (de) | 2020-08-27 | 2021-07-21 | Laststufenschalter und stufentransformator mit laststufenschalter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4197013A1 true EP4197013A1 (de) | 2023-06-21 |
Family
ID=77126826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21748590.3A Pending EP4197013A1 (de) | 2020-08-27 | 2021-07-21 | Laststufenschalter und stufentransformator mit laststufenschalter |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240029965A1 (de) |
EP (1) | EP4197013A1 (de) |
CN (1) | CN115885355A (de) |
AU (1) | AU2021333021A1 (de) |
DE (1) | DE102020122444A1 (de) |
MX (1) | MX2023002301A (de) |
WO (1) | WO2022042955A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022123571B3 (de) | 2022-09-15 | 2023-10-26 | Maschinenfabrik Reinhausen Gmbh | System zur betätigung eines stufenschalters |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4532386A (en) * | 1983-10-05 | 1985-07-30 | Rte Corporation | Dual voltage switch |
US5847939A (en) | 1995-06-07 | 1998-12-08 | Abb Power T&D Company Inc. | Support mechanism for mounting a center bolt LBOR and the like |
DE102008027274B3 (de) | 2008-06-06 | 2009-08-27 | Maschinenfabrik Reinhausen Gmbh | Leistungstransformator mit Stufenschalter |
JP2011159647A (ja) | 2010-01-29 | 2011-08-18 | Daihen Corp | タップ切換器を備えた変圧器 |
DE102012103489B4 (de) * | 2012-04-20 | 2015-11-12 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter und dessen Verwendung zur Spannungsregelung in einem Verteiltransformator |
CN105977002A (zh) * | 2016-06-22 | 2016-09-28 | 武汉泰普联合分接开关股份有限公司 | 一种配变用卧式有载调压分接开关 |
-
2020
- 2020-08-27 DE DE102020122444.3A patent/DE102020122444A1/de active Pending
-
2021
- 2021-07-21 CN CN202180052428.9A patent/CN115885355A/zh active Pending
- 2021-07-21 US US18/042,302 patent/US20240029965A1/en active Pending
- 2021-07-21 MX MX2023002301A patent/MX2023002301A/es unknown
- 2021-07-21 WO PCT/EP2021/070382 patent/WO2022042955A1/de active Application Filing
- 2021-07-21 AU AU2021333021A patent/AU2021333021A1/en active Pending
- 2021-07-21 EP EP21748590.3A patent/EP4197013A1/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2022042955A1 (de) | 2022-03-03 |
MX2023002301A (es) | 2023-03-21 |
US20240029965A1 (en) | 2024-01-25 |
AU2021333021A1 (en) | 2023-05-04 |
DE102020122444A1 (de) | 2022-03-03 |
CN115885355A (zh) | 2023-03-31 |
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