EP3891772A1 - Lastumschalter für laststufenschalter und laststufenschalter - Google Patents
Lastumschalter für laststufenschalter und laststufenschalterInfo
- Publication number
- EP3891772A1 EP3891772A1 EP19805193.0A EP19805193A EP3891772A1 EP 3891772 A1 EP3891772 A1 EP 3891772A1 EP 19805193 A EP19805193 A EP 19805193A EP 3891772 A1 EP3891772 A1 EP 3891772A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuating
- cam
- diverter switch
- vacuum interrupter
- tap changer
- 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
- 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
- H01H9/0038—Tap change devices making use of vacuum switches
-
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
-
- 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
Definitions
- the invention relates to a diverter switch for an on-load tap changer and a load tap changer with such a diverter switch.
- On-load tap-changers are used to carry out switchovers in step transformers. Switching takes place by mechanical actuation of different switches. As the load increases, i.e. higher currents and voltages, the requirements for the actuation mechanism also increase.
- Another object of the present invention is also to provide an on-load tap changer which can withstand the high mechanical loads at higher currents and voltages and is safe and reliable.
- the improved concept is based on the idea of designing part of the cams or the entire cam of the actuating element from a hard material than that of the base body. Since a lot of force has to be applied to open a vacuum interrupter at high currents, there is a risk that the cams will break out when the rollers move down. The greatest load occurs on the part of the cam that is responsible for the “opening” of the vacuum interrupter, the so-called opening flank. For this reason, at least part of the cam is made of a metal, in particular steel or tempering steel. This part is then at least as hard as the roller or has a higher or the same strength.
- the main body of the actuating body is made of an insulating material, for example plastic or glass fiber reinforced plastic, and part of the cam or the entire cam is made of a metal, in particular steel or tempered steel.
- a diverter switch for an on-load tap changer is specified, the diverter switch comprising at least one vacuum interrupter.
- the diverter switch comprises an actuating element which is mechanically connected at a first end of the vacuum interrupter and has a roller at a second end and an actuating body with a base body and at least one cam.
- the vacuum interrupter is actuated by moving the actuating body away from the roller via the actuating element.
- At least part of the cam has a higher strength than the base body.
- the actuating element can be designed as a simple connecting piece between the movable contact and the roller. Furthermore, the actuating element can be designed as a knee lever. The task of the actuating element is to transmit the force acting on a roller to the movable contact of the vacuum interrupter.
- the actuating body can be disc-shaped, cylindrical or rod-shaped.
- the cams can be arranged on the outer sides or on the circumferential side or on the upper side or the lower side. To move the actuating body, it can be rotated, pivoted or moved around one or more axes. Furthermore, the actuating element can be rotated, pivoted or moved to move the cams.
- the vacuum interrupter is opened by moving the at least part of the cam.
- the at least part of the cam which opens the vacuum interrupter is an opening flank.
- the base body consists of egg nem insulating material, for example plastic or glass fiber reinforced plastic.
- the at least part of the cam or the entire cam consists of metal, in particular Sahl or tempered steel.
- the actuating body has a base body with four cams with four vacuum interrupters, each with an actuating element, the four vacuum interrupters being arranged in a circle around the actuator body.
- the diverter switch can be configured in one, two or three phases, such that one to six vacuum interrupters are provided per phase.
- the vacuum interrupters of one phase are arranged side by side in one sector.
- an on-load tap changer which comprises at least one diverter switch according to the improved concept is specified.
- the invention is explained in detail below using exemplary embodiments with reference to the drawings. Components that are functionally identical or have an identical effect can be provided with identical reference symbols. Identical components or components with an identical function may only be explained with reference to the figure in which they appear first. The explanation is not necessarily repeated in the following figures.
- Figure 1 is a schematic representation of a step transformer with a
- On-load tap-changer which includes a diverter switch and a selector
- FIG. 2 shows a diverter switch according to the invention
- Figure 3 shows an actuating body of the diverter switch according to the invention
- Figure 1 shows a step transformer 3 with an on-load tap changer 2, which has a laser switch 1 and a selector 4.
- the on-load tap-changer 2 is driven by a motor 5.
- FIG. 2 shows the interior of a diverter switch 1 according to the invention.
- an actuating body 10 with a base body 1 1 and several No cken 20 is arranged.
- the actuating body 10 is connected to a drive shaft 19 in a mechanically rotationally fixed manner.
- the drive shaft 19 is connected to a not shown here, spring energy storage or a motor drive 5 and is actuated by this.
- the drive shaft 19 and thus the actuating body 10 is rotated about an axis A during operation.
- the drive shaft 19 is either rotated in one and the same direction or rotated back and forth by a fixed angle, that is, rotated forward and backward.
- the vacuum interrupter 30 is fixedly arranged around the actuating body 10. Usually, several vacuum interrupters with a corresponding actuation mechanism are arranged around an actuation body, for example in a circle.
- the vacuum interrupter 30 has a movable contact 31 on the supply element 50 is connected to an actuation.
- the actuating element 50 of this embodiment is designed as a rocker arm. At its first end 51, the actuating element 50 is connected to the movable contact 31 of the vacuum interrupter 30. In the embodiment shown here, the first end 51 is fork-shaped.
- the actuating element 50 has a roller 53 at its second end 52.
- Each of the vacuum interrupters of the Diverter switch has an actuating element, each with a roller.
- the housing can for example be cylindrical or box-shaped.
- FIG. 3 shows a detailed illustration of the actuating body 10.
- the actuating body 10 has a basic body 11 and a plurality of cams 20.
- the cams 20 are arranged on the outer surface 14 of the essentially disk-shaped or cylindrical actuating body 10.
- the actuating body 10 has a first actuating contour 12 and a second actuating contour 13 arranged immediately below it. Both actuating contours 12, 13 are arranged on the tel surface 14 and extend over the entire circumference. The arrangement of one or more actuation contours on the upper side 15 or lower side 16 of the actuating body 10 is also possible.
- the cams 20 are part of the actuation contours 12, 13.
- part 21 of cam 20 is made of a different material than base body 11.
- This part 21 of the cam 20 is the opening flank.
- This part 21 is connected to the base body 1 1 in a positive and / or non-positive manner. This is done by gluing and / or riveting and / or screwing. Wei further, the part 21 can be inserted into a recess 17 in the base body 1 1.
- This part 21 is preferably made of metal, in particular Sahl or tempering steel.
- the base body 1 1 preferably consists of an insulating material, for example plastic or glass fiber reinforced plastic.
- the roller 53 moves off an actuating contour 12, 13 of the actuating body 10 at the second end 52 of the actuating element 50.
- the opening flank ie the part 21 of the cam 20
- the vacuum interrupter 30 is opened.
- the vacuum interrupter 30 is then kept open by moving the cam 20 further down.
- the cam 20 presses on the roller 53 of the actuating element 50. Since this is formed as a rocker arm, it is pivoted about a pivot axis and the first end 51 of the actuating element 50 pulls on the movable contact 31 of the vacuum interrupter 30 and opens these.
- the actuating body 10 is rotated in the opposite direction to the opening.
- the vacuum interrupter 50 is closed.
- the at least part 21 of the cam 20 is preferably made of a material with a higher or the same strength as the roller 53.
- the actuating body 10 has a basic body 11 and two actuating contours 12, 13 which run one above the other and are arranged on the lateral surface 14.
- the first actuating contour 12 has two cams 20 for actuating two
- Vacuum interrupters 30 are used. Furthermore, the second actuating contour 13 has two cams 20 which are used to actuate two further vacuum interrupters 30. A part 21 of each cam 20 has a higher strength than the basic body 11. This part 21 is always the opening flank 22, by means of which the corresponding vacuum interrupter 30 is opened by the movement by a roller 53. The individual cams 20 of the respective actuation contours can be shifted from one another.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018130869.8A DE102018130869A1 (de) | 2018-12-04 | 2018-12-04 | Lastumschalter für Laststufenschalter und Laststufenschalter |
| PCT/EP2019/081032 WO2020114730A1 (de) | 2018-12-04 | 2019-11-12 | Lastumschalter für laststufenschalter und laststufenschalter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3891772A1 true EP3891772A1 (de) | 2021-10-13 |
| EP3891772B1 EP3891772B1 (de) | 2022-11-02 |
Family
ID=68583360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19805193.0A Active EP3891772B1 (de) | 2018-12-04 | 2019-11-12 | Lastumschalter für laststufenschalter und laststufenschalter |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11545313B2 (de) |
| EP (1) | EP3891772B1 (de) |
| JP (1) | JP7453227B2 (de) |
| KR (1) | KR102777220B1 (de) |
| CN (1) | CN113168975B (de) |
| DE (1) | DE102018130869A1 (de) |
| UA (1) | UA129021C2 (de) |
| WO (1) | WO2020114730A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018130869A1 (de) * | 2018-12-04 | 2020-06-04 | Maschinenfabrik Reinhausen Gmbh | Lastumschalter für Laststufenschalter und Laststufenschalter |
| EP4152355B1 (de) * | 2021-09-20 | 2025-03-12 | Hitachi Energy Ltd | Transformatoranordnung und verfahren zur montage einer transformatoranordnung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3467800A (en) * | 1967-03-21 | 1969-09-16 | Gen Electric | Reversible cam actuating mechanism for electric switches |
| DE3833126C2 (de) | 1988-09-29 | 1995-11-30 | Reinhausen Maschf Scheubeck | Lastwähler für Stufentransformatoren |
| DE19839884B4 (de) * | 1998-09-02 | 2006-01-12 | Ina-Schaeffler Kg | Elektromagnet, insbesondere Proportionalmagnet zur Betätigung eines hydraulischen Ventils |
| DE102009043171B4 (de) | 2009-09-26 | 2014-11-20 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter mit Vakuumschaltröhren |
| EP2591483B1 (de) | 2010-07-06 | 2014-03-26 | ABB Research Ltd. | Auswahlschaltmechanismus mit kompensation der position des schienenschlitzes |
| DE202012101476U1 (de) * | 2012-04-20 | 2013-07-23 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
| DE202012101543U1 (de) * | 2012-04-25 | 2012-05-07 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
| DE102013107558A1 (de) * | 2013-07-16 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
| DE102014102262A1 (de) * | 2014-02-21 | 2015-08-27 | Maschinenfabrik Reinhausen Gmbh | Schalteinrichtung |
| JP2016033959A (ja) * | 2014-07-31 | 2016-03-10 | 株式会社東芝 | 負荷時タップ切換器および負荷時タップ切換器用切換開閉器 |
| DE102016117526B3 (de) * | 2016-09-16 | 2018-02-15 | Maschinenfabrik Reinhausen Gmbh | Lasststufenschalter, Regeltransformator mit Laststufenschalter und Verfahren zum Schalten eines Laststufenschalters |
| DE102018130869A1 (de) * | 2018-12-04 | 2020-06-04 | Maschinenfabrik Reinhausen Gmbh | Lastumschalter für Laststufenschalter und Laststufenschalter |
| DE102019115970A1 (de) * | 2019-06-12 | 2020-12-17 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter |
-
2018
- 2018-12-04 DE DE102018130869.8A patent/DE102018130869A1/de not_active Withdrawn
-
2019
- 2019-11-12 KR KR1020217019683A patent/KR102777220B1/ko active Active
- 2019-11-12 WO PCT/EP2019/081032 patent/WO2020114730A1/de not_active Ceased
- 2019-11-12 JP JP2021529349A patent/JP7453227B2/ja active Active
- 2019-11-12 CN CN201980078453.7A patent/CN113168975B/zh active Active
- 2019-11-12 UA UAA202103798A patent/UA129021C2/uk unknown
- 2019-11-12 EP EP19805193.0A patent/EP3891772B1/de active Active
- 2019-11-12 US US17/299,791 patent/US11545313B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113168975B (zh) | 2025-12-26 |
| CN113168975A (zh) | 2021-07-23 |
| JP2022510154A (ja) | 2022-01-26 |
| EP3891772B1 (de) | 2022-11-02 |
| DE102018130869A1 (de) | 2020-06-04 |
| US11545313B2 (en) | 2023-01-03 |
| KR20210094042A (ko) | 2021-07-28 |
| BR112021008869A2 (pt) | 2021-08-31 |
| WO2020114730A1 (de) | 2020-06-11 |
| KR102777220B1 (ko) | 2025-03-05 |
| UA129021C2 (uk) | 2024-12-25 |
| JP7453227B2 (ja) | 2024-03-19 |
| US20220044884A1 (en) | 2022-02-10 |
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