EP2756510A1 - On-load tap changer - Google Patents
On-load tap changerInfo
- Publication number
- EP2756510A1 EP2756510A1 EP12751294.5A EP12751294A EP2756510A1 EP 2756510 A1 EP2756510 A1 EP 2756510A1 EP 12751294 A EP12751294 A EP 12751294A EP 2756510 A1 EP2756510 A1 EP 2756510A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- contacts
- tap
- drive shaft
- contact carrier
- 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- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
- H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
-
- 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
Definitions
- the invention relates to an on-load tap-changer.
- On-load tap-changers and Lasi duplexier are used to transform the transformers
- Winding taps of these transformers switch under load and thus
- On-load tap-changers as known from the published patent application DE10055406C1, usually consist of a selector for power-free preselection of those
- Winding taps of the transformer to be switched to, as well as a diverter switch for the actual uninterrupted switching from the previously connected winding tap to the new, preselected winding tap.
- a contact path leads via a closed contact the current, while on the second contact path, the next winding tapping is preselected to carry the current after the load switching.
- the actual load switching takes place with the aid of vacuum interrupters or mechanical contacts. Due to the oil contamination arising during switching, the vacuum interrupters or the mechanical contacts with the associated mechanical components are accommodated in a separate oil cylinder.
- the selector is due to the type either in the transformer housing or in a separate oil cylinder.
- a disadvantage of the on-load tap-changer is that they consist of many components. As a result, the assembly and maintenance are very time-consuming and thus expensive.
- Load selectors consist inter alia of an oil tank cylinder. This is made of an insulating material and has a radially arranged, three-part cam track inside. Below the cam track are three externally arranged power terminals, which are connected to a slip ring located inside. Above the cam track are the step contacts, which are connected to the respective taps of the stepped windings and engage in the interior of the cylinder. Through the interior of the oil cylinder cylinder extending from an insulating material switching shaft extends. At this, two, over a base plate and a partial cylinder horizontally mounted vacuum interrupters mounted in a contact carrier, sliding contacts with guide arms and numerous other parts. By the rotation of the rotation of the oil tank cylinder. This is made of an insulating material and has a radially arranged, three-part cam track inside. Below the cam track are three externally arranged power terminals, which are connected to a slip ring located inside. Above the cam track are the step contacts, which are connected to the respective taps of the stepped windings
- Vacuum interrupters set minimum requirements for the installation space and thus at the circumference of the oil cylinder. Due to the radial arrangement of the connections for the individual winding taps on the circumference of the oil cylinder and the given
- Minimum distances of neighboring terminals is the division, i. the maximum number of connections at a certain extent, limited.
- the object of the invention is to provide an on-load tap changer, which combines the advantages of an on-load tap changer and a load selector, while having a low plastic space and can be expanded in the simplest way to additional shadow contacts.
- the subclaims relate to advantageous developments of the invention.
- the invention is based on the general idea to fix fixed by cam actuated switching contacts (vacuum interrupters) and both the tap contacts, to switch from one winding tap to the next, and the contacts and Ableitessore, which are actuated by a screw vertically with each other, below the switch contacts, to arrange.
- Fig. 1 an on-load tap changer according to the invention
- Fig. 2 shows a possible switching sequence of an on-load tap changer according to the invention from a first tap contact to a second tap contact
- Fig. 3 shows a possible switching sequence of an on-load tap changer according to the invention from a second tap contact to a first tap contact
- Fig. 4 shows another embodiment of the contacts in Figure 1 is an inventive, three-phase on-load tap-changer 1 for
- Stepped transformers shown.
- a force accumulator 2 is arranged at the upper end of the on-load tap changer 1. This operates as trained as a screw spindle
- a contact carrier 8 is mechanically connected to the drive shaft 3. Depending on the direction of rotation, the contact carrier 8 can move vertically upwards or downwards without rotating itself.
- the contact carrier 8 consists of a sleeve member 9 and at least one contact arm 10.
- the sleeve member 9 is inside
- the sleeve member 9 serves as a connecting means between the drive shaft formed as a screw 3 and the contact carrier 8.
- At one end of the contact arm 10 at least two galvanically separated contacts 11 and 12 are arranged. In the example shown, the contacts 1 1 and 12 are designed as sliding contact finger pairs.
- each contact arm 10 at least two corresponding Ableitromee 13 and 14 are assigned vertically.
- the Ableitcard 13 always has an electrically conductive and mechanically sliding connection to one end of the contact 11. Since it is in Beispie! is a contact finger pair, the diverter 13 slides in between. This also applies to the discharge contact 14 and the contact 12th
- the contact arm 10 via a recess 15, in the form of a bore with one of the Ableitessore, here Ableitcard 13, mechanically connected.
- the discharge contact 13 also has the function of a guide for the contact carrier 8 and prevents it from rotating with the drive shaft 3.
- each contact arm 10 is assigned an insulating rod 16 made of an electrically non-conductive material.
- Isollerstab 16 corresponding to the contacts 11 and 12 electrically conductive step contacts 17 are arranged linearly along a vertically extending path. These are mutually offset and extend from the inside of Isoiferstabes 16 to the outsides. On the outside of the insulating rod 16, the different are at the stage contacts 17
- FIG. 2 the switching sequence of the on-load tap-changer 1 according to the invention by the individual circuit diagrams A - H is shown.
- the initial state is shown in circuit diagram A.
- both contacts 11 and 12 at the same stage contact 17.
- Both vacuum interrupters 6 and 7 are closed, due to the series-connected
- the stored energy is released by rotation of the drive shaft 3.
- the sleeve member 9 of the contact carrier is moved linearly down or up to the next stage contact 17.
- the contact 1 1 of the tap contact 17 dissolves.
- the vacuum sight tube 6 is opened via a deflection arrangement 5 with the aid of a cam disc 4, which is likewise driven by the drive shaft 3 (diagram C).
- the contact carrier 8 has covered such a way that contact 11 is applied to a next stage contact 17 (diagram D), up to this point, the current through contact 12 and
- Vakuumschaitube 7 flowed to the discharge 18.
- the vacuum sight tube 8 is closed. This creates the so-called, circular current (diagram E).
- Another cam 4 then opens the vacuum sheath tube 7 (diagram F), so that the windings of the adjacent stage contact 17 can be tapped.
- the contact carrier 8 has moved so far that the contact 12 rests against the step contact 17.
- the contacts 1 1 and 12 have reached their end position and one of the cams 4 closes the vacuum sheath tube 7, so that the current can flow through this to the derivative 19.
- the compact design has fewer components compared to on-load tap changers of the prior art.
- On-demand tap-changer 1 can be easily extended downwards if required and can easily be extended by additional contacts for further control windings.
- the extension to further developments is much easier to implement than with conventional ones
- FIG. 4 shows an alternative form of the contacts 11 and 12. These are not designed as sliding contacts, but have at the ends conductive Rolfen 20, in the up and down movement can be reduced by the rolling wear of the contacts 11 and 12.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011113718A DE102011113718A1 (en) | 2011-09-17 | 2011-09-17 | OLTC |
PCT/EP2012/065596 WO2013037573A1 (en) | 2011-09-17 | 2012-08-09 | On-load tap changer |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2756510A1 true EP2756510A1 (en) | 2014-07-23 |
Family
ID=46754409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12751294.5A Withdrawn EP2756510A1 (en) | 2011-09-17 | 2012-08-09 | On-load tap changer |
Country Status (9)
Country | Link |
---|---|
US (1) | US20140159847A1 (en) |
EP (1) | EP2756510A1 (en) |
JP (1) | JP2014531754A (en) |
KR (1) | KR20140060296A (en) |
CN (1) | CN103797555A (en) |
BR (1) | BR112014002337A2 (en) |
DE (1) | DE102011113718A1 (en) |
IN (1) | IN2014CN00476A (en) |
WO (1) | WO2013037573A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013107558A1 (en) * | 2013-07-16 | 2015-01-22 | Maschinenfabrik Reinhausen Gmbh | OLTC |
DE102013107552B4 (en) * | 2013-07-16 | 2017-03-16 | Maschinenfabrik Reinhausen Gmbh | OLTC |
CN104681322A (en) * | 2013-11-27 | 2015-06-03 | Abb研究有限公司 | Tapping point converter |
DE102014107795A1 (en) * | 2014-06-03 | 2015-12-03 | Maschinenfabrik Reinhausen Gmbh | Electrical system for a three-phase AC mains and switching arrangement therefor |
KR101530025B1 (en) * | 2014-07-07 | 2015-06-22 | 현대중공업 주식회사 | Tap Changer |
KR101538096B1 (en) * | 2014-07-08 | 2015-07-21 | 현대중공업 주식회사 | Tap changer |
CN104201015B (en) * | 2014-08-30 | 2016-09-28 | 任宏宇 | The circular plate type contact switching mechanism of shunting switch |
DE102014112763A1 (en) * | 2014-09-04 | 2016-03-10 | Maschinenfabrik Reinhausen Gmbh | Switching arrangement for a regulating transformer, in particular preselector |
CN104240975B (en) * | 2014-09-23 | 2016-09-28 | 任宏宇 | Swollen being fixedly mounted with of shunting switch is put |
PT3086343T (en) | 2015-04-21 | 2019-03-14 | Ormazabal Corporate Tech A I E | On-load tap changer device |
CN106653426B (en) * | 2017-01-12 | 2018-08-17 | 济南爱迪电气设备有限公司 | A kind of special on-load voltage regulating switch of distribution transformer |
CN107221463B (en) * | 2017-06-22 | 2019-08-09 | 西安森宝电气工程有限公司 | A kind of vacuum on-load operation switch |
DE102018105097A1 (en) * | 2018-03-06 | 2019-09-12 | Maschinenfabrik Reinhausen Gmbh | LASTSTUFENSCHALTER AND LOCAL TRANSFORMER WITH A LASTSTUFENSCHALTER |
ES1216144Y (en) | 2018-06-04 | 2018-10-24 | Ormazabal Corporate Tech A I E | SYSTEM OF CONTACTS FOR CHANGING DEVICE OF ELECTRICAL IN CHARGES |
EP3758036B1 (en) * | 2019-06-25 | 2024-07-31 | Hitachi Energy Ltd | Selector switch for on-load tap changer |
EP4084032A1 (en) * | 2021-04-28 | 2022-11-02 | Hitachi Energy Switzerland AG | Vacuum interrupter assembly for a power diverter switch, power diverter switch for a transformer load tap changer and transformer load tap changer |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1788013B1 (en) * | 1968-09-14 | 1971-12-02 | Reinhausen Maschf Scheubeck | STEP SELECTOR WITH TURNOVER FOR STEP SWITCH FROM RE GELTRANSFOR MATOREN |
DE2348091C2 (en) * | 1973-09-25 | 1975-08-28 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Kg, 8400 Regensburg | Three-phase cylindrical diverter switch for step switches of step transformers |
JPH0821507B2 (en) * | 1988-08-26 | 1996-03-04 | 愛知電機株式会社 | Accumulation mechanism of tap changer under load |
DE3833126C2 (en) | 1988-09-29 | 1995-11-30 | Reinhausen Maschf Scheubeck | Load selector for step transformers |
DE4011019C1 (en) * | 1990-04-05 | 1991-12-05 | Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De | |
DE4016428C1 (en) * | 1990-05-22 | 1991-11-07 | Maschinenfabrik Reinhausen Gmbh, 8400 Regensburg, De | |
UA27824C2 (en) * | 1992-07-16 | 2000-10-16 | Машіненфабрік Рейнхаузен Гмбх | Tap changing device for transformer winding |
DE19510809C1 (en) * | 1995-03-24 | 1996-07-04 | Reinhausen Maschf Scheubeck | Load switching device for stepping switch |
CN2437028Y (en) * | 2000-07-26 | 2001-06-27 | 邵长青 | Redistributing loaded switch for winding of transformer |
DE10055406C1 (en) * | 2000-11-09 | 2002-04-04 | Reinhausen Maschf Scheubeck | Load switch for transformer stepping switch has parts of terminal contacts lying within oil-filled housing of load switch attached to periphery of upper mounting plate supporting load switching insert |
ITVI20040307A1 (en) * | 2004-12-27 | 2005-03-27 | Comem Spa | SWITCH WITHOUT VOLTAGE WITH MANEUVER FOR ELECTRIC TRANSFORMERS |
-
2011
- 2011-09-17 DE DE102011113718A patent/DE102011113718A1/en not_active Withdrawn
-
2012
- 2012-08-09 KR KR1020147005958A patent/KR20140060296A/en not_active Application Discontinuation
- 2012-08-09 US US14/234,704 patent/US20140159847A1/en not_active Abandoned
- 2012-08-09 EP EP12751294.5A patent/EP2756510A1/en not_active Withdrawn
- 2012-08-09 WO PCT/EP2012/065596 patent/WO2013037573A1/en active Application Filing
- 2012-08-09 JP JP2014530132A patent/JP2014531754A/en active Pending
- 2012-08-09 BR BR112014002337A patent/BR112014002337A2/en not_active IP Right Cessation
- 2012-08-09 CN CN201280044776.2A patent/CN103797555A/en active Pending
-
2014
- 2014-01-21 IN IN476CHN2014 patent/IN2014CN00476A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2013037573A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20140060296A (en) | 2014-05-19 |
IN2014CN00476A (en) | 2015-04-03 |
DE102011113718A1 (en) | 2013-03-21 |
JP2014531754A (en) | 2014-11-27 |
US20140159847A1 (en) | 2014-06-12 |
WO2013037573A1 (en) | 2013-03-21 |
BR112014002337A2 (en) | 2017-03-01 |
CN103797555A (en) | 2014-05-14 |
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