EP2981979A1 - Verfahren zur durchführung eines umschaltvorgangs in einem laststufenschalter - Google Patents
Verfahren zur durchführung eines umschaltvorgangs in einem laststufenschalterInfo
- Publication number
- EP2981979A1 EP2981979A1 EP14716255.6A EP14716255A EP2981979A1 EP 2981979 A1 EP2981979 A1 EP 2981979A1 EP 14716255 A EP14716255 A EP 14716255A EP 2981979 A1 EP2981979 A1 EP 2981979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switching
- voltage
- phase
- electric drive
- during
- 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 abstract description 37
- 238000004804 winding Methods 0.000 claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 238000012806 monitoring device Methods 0.000 claims description 7
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F5/00—Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
-
- 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
Definitions
- the invention relates to a method for performing a switching operation in an on-load tap changer between winding taps of a tapped transformer.
- On-load tap-changers have been in worldwide use for many years for uninterrupted switching between different winding taps of tapped transformers in large numbers. So-called reactor switches, which are particularly common in North America, have a switching reactance, which allows a slow, continuous switching.
- On-load tap changers according to the resistance fast-switching principle usually consist of a selector for powerless selection of the respective winding tap of the tapped transformer to be switched to, and a diverter switch for the actual switching from the previous to the new, preselected winding tapping.
- the diverter switch usually has switching contacts and resistance contacts.
- the switch contacts are used for direct connection of the respective winding tap with the load dissipation, the resistor contacts for short-term wiring, d. H. Bridging by means of one or more switching resistors.
- a diverter switch carries a drivable by a power storage drive shaft with at least one cam.
- the cam has a plurality of control cams, wherein two arranged on the cam front control cams have a deviating from a circular contour in the manner of cams on the contact a respective connected via a rocker arm with a vacuum interrupter roller is performed, the profiled contour of the respective control cam taps.
- the object of the invention is therefore to provide a method for performing a switching operation in an on-load tap-changer, in order to increase the safety of on-load tap-changers.
- the general inventive idea consists in a method for carrying out a changeover operation of an on-load tap changer, which subdivide the switching sequence underlying the switching operation in several phases, the critical and uncritical switching states of each switch contacts used to monitor each of these phases during a switching operation and in dependence on a parameterized in a controller decision logic that processes the detected at the beginning of an intended switching operation by a voltage monitoring device value of the supply voltage as basis for decision and only then starts the switching or enters the next defined phase of the switching, when a supply voltage is detectable and
- a voltage drop of the mains or supply voltage and thus in case of failure of the power supply of the electric drive, during a switching operation using the existing in the capacitors of the control energy overcomes each identified for a switching sequence critical switching states of the respective switching contacts over by the next, as uncritically identified phase of the switching states is switched.
- a voltage monitoring device checks whether a voltage is applied to a selected phase line. If the voltage is not applied, the changeover is aborted and continued when the voltage is applied.
- an electric drive is actuated via a controller which opens the second switching contact.
- the power supply to the electric drive is monitored by a controller.
- a voltage dip in the power supply of the electric drive energy from the capacitors of the controller is used to fully open the second switching contact.
- an adjacent winding tap is approached by a second selector contact.
- the electric drive is actuated via a controller and thereby the second switching contact is closed.
- the power supply of the electric drive is monitored by the controller and the energy from capacitors of the controller is used to fully close the second switching contact at a voltage dip of the power supply of the electric drive.
- the first selector contact is applied to one winding tap and the second selector contact is applied to the adjacent winding tap.
- the first and the second switching contact are closed. During this time, a circulating current Ik is created.
- the continuation of the switchover is checked by the voltage monitoring device as to whether a voltage is applied to a selected phase line. If the voltage is not present, the changeover is aborted, and the voltage continues.
- an adjacent winding tap is approached by the first selector contact.
- the electric drive is actuated via a controller and the first switching contact is closed. During closing, the power supply of the electric drive is monitored by a controller and used in a voltage dip in the power supply of the electric drive, the energy from capacitors of the controller to fully close the first switching contact.
- the switching is completed.
- Figure 1 shows a schematic view of an on-load tap changer with necessary means for carrying out a switching operation, in which critical positions are avoided.
- FIGS. 2a-2i depict an exemplary changeover operation of an on-load tap changer operating on the reactor switching principle.
- FIG. 3 shows a schematic flow chart with different phases during a switching process.
- FIG. 1 shows an on-load tap-changer 1, according to the reactor switching principle, which is located in a tapped transformer 2.
- the step-up transformer 2 has a high-voltage side 3, to which the on-load tap-changer 2 is arranged, and an undervoltage side 4. Both the high-voltage side 3 and the low-voltage side 4 each have three phase lines L1, L2, L3, 11, 12, 13.
- the on-load tap-changer 1 is actuated by an electric drive 5.
- a controller 6 initiates the individual switching operations of the electric drive 5.
- the controller 6 is connected via a controller 7 to the electric drive 5 and to a voltage monitoring device 8, referred to below as SUV 8.
- the SUV 8 monitors the voltage of the individual phase lines 11, 12 and 13 on the low voltage side 4.
- the power supply of the electric drive 5 via one of these phase lines 11 of the low voltage side 4 via a line 9. However, this is for each of the located on the low voltage sides 4 phase line 11, 12, or 13 suitable.
- FIGS. 2a-2i show an exemplary switching operation of an on-load tap-changer 1, which operates on the reactor switching principle.
- the on-load tap-changer 1 consists of a first and a second switching contact V1 and V2, a first and a second movable selector contact W1 and W2 and a first and a second over-reacting X1 and X2.
- a load dissipation Y is disposed between the first and second reactances X1 and X2.
- the switching operation takes place from a first tap n a step winding to an adjacent second winding tap n + 1 a step winding of a tapped transformer 2, wherein an intermediate position n + 1/2 is allowed as a stationary operating position.
- phase (I) Figure 2a
- the switching is initiated.
- the second switching contact V2 is opened.
- the third phase (III) Figure 2c
- the adjacent second winding tap n + 1 is approached by the second selector contact W2.
- phase four (IV) the second switching contact V2 is closed.
- phase five (V) Figure 2d
- both switching contacts V1 and V2 are closed.
- phase six (VI) will the first switching contact V1 opened.
- phase seven (VII) FIG. 2g
- the first selector contact W1 approaches the adjacent second winding tap n + 1.
- phase eight (VIII) of the first switching contact V1 is closed.
- phase nine (IX) the switching process is completed.
- the inventive method is shown by a schematic flow chart.
- the SUV 8 upon initiation of the switching operation in the first phase (I), the SUV 8 first of all checks whether a voltage is applied to the phase line 11, 12, 13 selected for the energy supply. If this is not the case, the switching operation is not performed and the on-load tap-changer 1 remains in this position or the entire tapped transformer 2 is switched off. If a voltage is applied, the electric drive 5 is actuated via the controller 6.
- the second switching contact V2 is opened.
- This phase is to be regarded as a critical switching state, since it can come to a not completely open second switching contact V2 for non-extinction of the arc.
- the controller 7 monitors during this time the power supply of the electric drive 5. If it comes during this phase (II) to a voltage dip, ie a failure of the power supply, this is detected by the grain roller 7 and with the help of existing in the controller 6 energy, from the previously charged capacitors, compensated, ie the second switching contact V2 is fully opened.
- phase (III) When the opening is completed, in the third phase (III), the adjacent tap n + 1 is approached by the second selector contact W2.
- phase four (IV) the power supply is monitored by the controller 7.
- This phase (IV) is also to be regarded as a critical switching state, since it can lead to pre-ignition and subsequent non-extinction of the arc at a not completely closed second switching contact V2.
- this is detected by the grain roller 7 and compensated by means of the energy present in the control 6, from the previously charged capacitors, i. the second switching contact V2 is completely closed.
- the fifth phase (V) ie after the second switching contact V2 has been closed, the so-called circular current Ik arises. This switching state is not critical.
- phase six Before opening the first switching contact V1, ie phase six (VI), it is checked again whether a voltage is applied to the phase line 11, 12, 13 selected for the power supply is applied. If this is not the case, the switching process is not performed and the on-load tap-changer remains in this position or the entire tapped transformer is switched off. In phase seven (VII), the adjacent tap n + 1 is approached. In the eighth phase (VIII), the first switching contact V1 is closed. The controller 7 monitors during this time the power supply of the electric drive 5. If it comes during this phase to a voltage dip, ie a failure of the power supply, this is detected by the grain roller 7 and with the help of existing in the controller 6, already pre-charged capacitors compensated. In the last phase, the switching process is completed.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Electrical Variables (AREA)
- Protection Of Transformers (AREA)
- Housings And Mounting Of Transformers (AREA)
- Keying Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310103360 DE102013103360A1 (de) | 2013-04-04 | 2013-04-04 | Verfahren zur Durchführung eines Umschaltvorgangs in einem Laststufenschalter |
PCT/EP2014/055733 WO2014161729A1 (de) | 2013-04-04 | 2014-03-21 | Verfahren zur durchführung eines umschaltvorgangs in einem laststufenschalter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2981979A1 true EP2981979A1 (de) | 2016-02-10 |
EP2981979B1 EP2981979B1 (de) | 2017-08-16 |
Family
ID=50473266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14716255.6A Active EP2981979B1 (de) | 2013-04-04 | 2014-03-21 | Verfahren zur durchführung eines umschaltvorgangs in einem laststufenschalter |
Country Status (12)
Country | Link |
---|---|
US (1) | US9513654B2 (de) |
EP (1) | EP2981979B1 (de) |
JP (1) | JP6275244B2 (de) |
KR (1) | KR102167439B1 (de) |
CN (1) | CN105164770B (de) |
BR (1) | BR112015024604B1 (de) |
DE (1) | DE102013103360A1 (de) |
ES (1) | ES2647825T3 (de) |
HK (1) | HK1214677A1 (de) |
RU (1) | RU2658290C2 (de) |
UA (1) | UA118102C2 (de) |
WO (1) | WO2014161729A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013100263A1 (de) * | 2013-01-11 | 2014-07-31 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter mit einer Verbindung zum Ölvolumen eines Transformators |
MX354634B (es) * | 2013-08-27 | 2018-03-14 | Reinhausen Maschf Scheubeck | Cambiador de tomas bajo carga, transformador con tomas para regulación de voltaje y método para ejecución de un cambio de toma en el transformador. |
DE102015102727A1 (de) * | 2015-02-25 | 2016-08-25 | Maschinenfabrik Reinhausen Gmbh | Verfahren zum Ändern der aktiven Windungszahl einer Regelwicklung in einer elektrischen Anlage und elektrische Anlage mit einer Regelwicklung |
JP2019067989A (ja) * | 2017-10-04 | 2019-04-25 | 株式会社日立製作所 | 負荷時タップ切換装置の診断装置、負荷時タップ切換装置の診断方法、変圧器の診断装置 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1638536A1 (de) * | 1967-01-11 | 1970-08-06 | Siemens Ag | Anordnung und Verfahren zur unterbrechungslosen Lastumschaltung bei Stufentransformatoren |
DE1802253A1 (de) * | 1968-10-10 | 1970-05-14 | Siemens Ag | Anordnung zur kurzschlussfesten Lastumschaltung bei einem Stufentransformator |
DE2327610C3 (de) * | 1973-05-30 | 1979-01-11 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg | Lastumschalter für Stufenschalter von Regeltransformatoren |
DE2457807C3 (de) * | 1974-12-06 | 1978-10-26 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Einrichtung zur Umschaltung eines Stufentransformators mittels Halbleiter-Wechselstromsteller |
DE2806282C2 (de) | 1978-02-15 | 1980-04-10 | Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg | Lastumschalter für Stufenschalter von Stufentransformatoren |
DE3833126C2 (de) * | 1988-09-29 | 1995-11-30 | Reinhausen Maschf Scheubeck | Lastwähler für Stufentransformatoren |
DE4009038A1 (de) * | 1990-03-21 | 1991-09-26 | Reinhausen Maschf Scheubeck | Verfahren und anordnung fuer ein ueberwachungssystem fuer stufenschalter von stufentransformatoren |
GB9319470D0 (en) * | 1993-09-21 | 1993-11-03 | Nat Grid Comp Plc | Electrical changeover switching |
US5545974A (en) * | 1994-09-29 | 1996-08-13 | Siemens Energy & Automation, Inc. | Variamp oil temperature control |
US5602462A (en) * | 1995-02-21 | 1997-02-11 | Best Power Technology, Incorporated | Uninterruptible power system |
DE19743864C1 (de) * | 1997-10-04 | 1999-04-15 | Reinhausen Maschf Scheubeck | Stufenschalter |
DE19743865C1 (de) * | 1997-10-04 | 1999-04-15 | Reinhausen Maschf Scheubeck | Stufenschalter |
JPH11233354A (ja) * | 1998-02-10 | 1999-08-27 | Toshiba Corp | 変電設備 |
DE19855860C1 (de) | 1998-12-03 | 2000-02-17 | Reinhausen Maschf Scheubeck | Kraftspeicher für einen Stufenschalter |
US7750257B2 (en) * | 2004-06-03 | 2010-07-06 | Cooper Technologies Company | Molded polymer load tap changer |
SE527252C2 (sv) * | 2004-06-30 | 2006-01-31 | Abb Research Ltd | Lastkopplare, förfarande för manövrering av sådan och användning av sådan |
US7417411B2 (en) * | 2005-09-14 | 2008-08-26 | Advanced Power Technologies, Llc | Apparatus and method for monitoring tap positions of load tap changer |
DE102005058793B3 (de) * | 2005-12-09 | 2006-12-07 | Maschinenfabrik Reinhausen Gmbh | Umsteller für Schaltüberwachungseinrichtung |
DE102009043171B4 (de) | 2009-09-26 | 2014-11-20 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter mit Vakuumschaltröhren |
CN102592808B (zh) * | 2012-02-14 | 2014-09-03 | 山东大学 | 一种有载分接开关及其工作方法 |
-
2013
- 2013-04-04 DE DE201310103360 patent/DE102013103360A1/de not_active Withdrawn
-
2014
- 2014-03-21 US US14/772,021 patent/US9513654B2/en active Active
- 2014-03-21 JP JP2016505753A patent/JP6275244B2/ja active Active
- 2014-03-21 WO PCT/EP2014/055733 patent/WO2014161729A1/de active Application Filing
- 2014-03-21 KR KR1020157030709A patent/KR102167439B1/ko active IP Right Grant
- 2014-03-21 RU RU2015146988A patent/RU2658290C2/ru active
- 2014-03-21 EP EP14716255.6A patent/EP2981979B1/de active Active
- 2014-03-21 CN CN201480024360.3A patent/CN105164770B/zh active Active
- 2014-03-21 ES ES14716255.6T patent/ES2647825T3/es active Active
- 2014-03-21 BR BR112015024604-4A patent/BR112015024604B1/pt active IP Right Grant
- 2014-03-21 UA UAA201509520A patent/UA118102C2/uk unknown
-
2016
- 2016-03-07 HK HK16102586.8A patent/HK1214677A1/zh unknown
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014161729A1 * |
Also Published As
Publication number | Publication date |
---|---|
HK1214677A1 (zh) | 2016-07-29 |
RU2015146988A3 (de) | 2018-03-22 |
RU2658290C2 (ru) | 2018-06-20 |
CN105164770B (zh) | 2017-05-10 |
RU2015146988A (ru) | 2017-05-12 |
DE102013103360A1 (de) | 2014-10-09 |
UA118102C2 (uk) | 2018-11-26 |
CN105164770A (zh) | 2015-12-16 |
JP6275244B2 (ja) | 2018-02-07 |
BR112015024604B1 (pt) | 2021-01-19 |
WO2014161729A1 (de) | 2014-10-09 |
JP2016519922A (ja) | 2016-07-07 |
ES2647825T3 (es) | 2017-12-26 |
KR102167439B1 (ko) | 2020-10-20 |
BR112015024604A2 (pt) | 2017-07-18 |
KR20150140308A (ko) | 2015-12-15 |
US20160018840A1 (en) | 2016-01-21 |
EP2981979B1 (de) | 2017-08-16 |
US9513654B2 (en) | 2016-12-06 |
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