EP3039698B1 - Laststufenschalter, stufentransformator zur spannungsregelung und verfahren zur durchführung einer umschaltung im stufentransformator - Google Patents

Laststufenschalter, stufentransformator zur spannungsregelung und verfahren zur durchführung einer umschaltung im stufentransformator Download PDF

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Publication number
EP3039698B1
EP3039698B1 EP14747370.6A EP14747370A EP3039698B1 EP 3039698 B1 EP3039698 B1 EP 3039698B1 EP 14747370 A EP14747370 A EP 14747370A EP 3039698 B1 EP3039698 B1 EP 3039698B1
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EP
European Patent Office
Prior art keywords
selector
winding
numbered
load
odd
Prior art date
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Active
Application number
EP14747370.6A
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German (de)
English (en)
French (fr)
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EP3039698A1 (de
Inventor
Christian Hammer
Andreas Sachsenhauser
Konrad RÄDLINGER
Max Weidinger
Thomas Schuster
Jürgen KOLLMANNSBERGER
Christian Pircher
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Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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Priority claimed from DE102013109289.6A external-priority patent/DE102013109289B8/de
Priority claimed from DE102014103526.7A external-priority patent/DE102014103526A1/de
Application filed by Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP3039698A1 publication Critical patent/EP3039698A1/de
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    • 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
    • H01H9/0011—Voltage selector switches
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
    • G05F1/147—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices with motor driven tap switch
    • 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
    • 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
    • H01H9/0016—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
    • H01H9/0038—Tap change devices making use of vacuum switches

Definitions

  • the invention relates to an on-load tap changer for voltage regulation of a tapped transformer, in particular for a tapped transformer having at least one phase to be controlled, having a first winding and a second winding, a tapped transformer for voltage regulation, and a method for performing a change in a tapped transformer for voltage regulation ,
  • WO 2012/175141 A1 describes a three-phase on-load tap changer for controlling a three-phase tapped transformer comprising a selector with a total of three contact arrangements for preselecting the taps of a tapped transformer and a diverter switch with a total of three switch arrangements for the actual load switching.
  • EP 1 864 305 B1 discloses in Fig. 12B an arrangement for controlling a distribution transformer by means of an on-load tap changer, wherein the distribution transformer has a phase to be controlled with a first and a second winding.
  • the first and the second winding each have a control winding with winding taps, which are connected by an on-load tap-changer.
  • US 2 484 576 A describes a voltage regulation device for a three-phase stepping transformer, wherein the transformer has two windings per phase and each winding comprises an area to be controlled with taps af. Furthermore, a tap changer is provided per phase, which has a rotating contact arm with a movable contact which connects the tap contacts a'-f 'associated with the taps af. In this case, the movable contact in the stationary position always contacts the two stage contacts simultaneously, which belong to the respective tap of both the first winding and the second winding of a phase.
  • US 2 434 503 A describes a tap changer for controlling a three-phase transformer comprising a total of four windings, of which two main windings and two control windings with taps.
  • a tap changer is provided which connects the taps of the control winding.
  • Each tap changer has for this purpose a first and a second contact fingers.
  • the actual load switching is performed via two Abbrandcarde, which are each arranged between the two first and second contact fingers.
  • a drive mechanism provided comprising a Maltese driver for actuating the contact fingers of the tap changer.
  • the two contact fingers of a tap changer are always moved together, so they are not independently movable.
  • the contact fingers of different tap changer are not coupled.
  • the object of the invention is therefore an on-load tap changer for voltage regulation, which avoids the disadvantages of the prior art and can be used at higher voltages, a step transformer for voltage regulation, which is safe and reliable, and a method for performing a switching in a tapped transformer for voltage regulation to provide a safe operation of the tapped transformer is guaranteed.
  • the proposed according to the first aspect of the invention on-load tap-changer is used for voltage regulation of a tapped transformer.
  • the tapped transformer has at least one phase to be controlled, which has a first winding and a second winding.
  • the first winding each has a control winding with even-numbered winding taps
  • the second winding has a control winding with odd-numbered winding taps.
  • each a parent winding is provided, wherein the first winding and the second winding with the control windings of the even and the odd-numbered winding taps are inductively coupled.
  • the on-load tap-changer has a, in particular first, selector, which is designed in such a way that power-free preselection of the even-numbered or even-numbered winding taps to be connected is alternately possible.
  • the selector has a first selector part for the control winding with the even-numbered winding taps and a second selector part for the control winding with the odd-numbered winding taps for powerless preselection of the winding taps to be connected.
  • the first selector part has two selector arms each, and the second selector part has two selector arms each for the winding taps of a control winding.
  • the first selector part is electrically conductively connected to the even-numbered winding taps of the control winding of the first winding via tap contacts.
  • the second selector part is electrically conductively connected to the odd-numbered winding taps of the control winding of the second winding via tap contacts.
  • Each selector arm of the first or second selector part is electrically conductively connected to a respective arrester rail and to a respective step contact of the corresponding control winding.
  • Each discharge bar is electrically connected to the diverter switch.
  • Each selector arm is associated with a spindle, belt or chain for linear movement.
  • the diverter switch has a first switching side and a second switching side, wherein the first switching side separates the first diverter rail of the first selector part and the second diverter rail of the second selector part. Likewise, the second switching side separates or connects the second discharge rail of the first selector part and the first discharge rail of the second selector part.
  • each switching side has at least one mechanical switch, two vacuum interrupters and one resistor.
  • a first switching branch is connected in parallel to a second switching branch, wherein the first switching branch connected in series, a mechanical switch and a vacuum interrupter and the second switching branch connected in series comprises a mechanical switch, a vacuum interrupter and a resistor.
  • each switching side has at least one mechanical switch, two vacuum interrupters and one resistor.
  • the mechanical switch is connected in series with a vacuum interrupter and is connected in series with a first switching branch with a resistor and a second branch with a vacuum interrupter, wherein the first and the second branch are connected in parallel.
  • Each switching side has a permanent main contact, which is connected in parallel with the first and second switching branches. Furthermore, each switching side has a permanent main contact, which connects directly to the first and the second diverter rail with each other.
  • Each switching side may be formed as desired in any manner and include, for example, at least one additional or further mechanical switch and / or at least one additional or further vacuum interrupter and / or at least one additional or further resistor and / or at least one additional or further permanent main contact.
  • the coupling of the first motor drive to the first selector and / or the first diverter switch can take place in any desired manner, for example directly or indirectly, in particular via the output shaft and / or the transmission and / or the drive shaft.
  • the first motor drive is arranged as close as possible to the first selector and / or the first diverter switch and / or attached to the first selector and / or the first diverter switch.
  • Each shaft may preferably be electrically insulating.
  • the stand which is also referred to as a supporter, ensures the insulation required in each case of use between the live contacts, wires and other parts of the on-load tap-changer and the ground potential. With a sufficient height of the stator, an isolation distance of at least 72 kV or at least 123 kV or at least 145 kV can thus be achieved.
  • the base may for example be part of the tapped transformer or the on-load tap-changer.
  • the on-load tap-changer proposed according to the first aspect can be configured as desired in any manner and for example at least one additional or further selector and / or at least one additional or further diverter switch and / or at least one additional or further motor drive and / or at least one additional or further output shaft and / or at least one additional or further gear and / or at least one additional or further drive shaft and / or at least one additional or further stator.
  • the resistors are charged with each switching operation with a very high electrical power and heat up accordingly. They can cool down until the next changeover, which, however, can be so small depending on the switching distance that they continue to heat up. Should their temperature be too high, the switching distance would have to be increased to allow more time for cooling. As a result, the operation of the on-load tap-changer is impaired. Since such cast iron resistors have higher masses compared to wirewound resistors and therefore heat up more slowly with the same energy input, the switching distance must be increased less frequently. This is particularly important for dry-type transformers because they cool the resistors with air, which is far less effective than the transformer oil cooling possible with oil transformers.
  • the hot exhaust air resulting from air cooling of a dry transformer can be used as the cooling air for the resistors since these hot exhaust air are still colder than the resistors in operation.
  • Such a three-phase on-load tap-changer is in particular for a so-called Temple transformer suitable in which three phases in the corners of an equilateral triangle are arranged symmetrically to each other and the example of DE 40 29 097 A1 . US 5 202 664 A . EP 1 277 217 B1 . EP 2 367 181 A1 and US 2013 328,652 A1 is known.
  • For the three voters can be assigned to the phases simply such that for each phase-voter pair analog or similar or equal connection conditions given and in particular short connection lines are possible.
  • three single-phase on-load tap-changers which are designed and / or constructed in particular according to the first aspect, may be arranged symmetrically to one another in the corners of an equilateral triangle.
  • the triangle is equilateral and the voters are arranged in the corners symmetrical to each other.
  • the voltage-regulating stage transformer proposed according to the second aspect of the invention comprises a, in particular first, on-load tap-changer, which is designed in particular according to the first aspect, and at least one phase to be regulated, which has a first winding and a second winding.
  • the first winding has a regular winding with even winding taps and a main winding on.
  • the second winding has a control winding with odd-numbered winding taps and a main winding.
  • the first winding and the second winding are inductively coupled to the control windings of the even and odd winding taps.
  • the on-load tap-changer has a first selector part and a second selector part for alternately powerless preselection of the even-numbered or even-numbered winding taps to be connected.
  • the first selector part and the second selector part each have two selector arms for the winding taps of each control winding.
  • Each selector arm of the first or second selector part is electrically conductively connected, each with a discharge bar, to a respective step contact of the corresponding control winding.
  • Each discharge bar is electrically connected to the on-load tap-changer.
  • A, in particular first, transmission is provided with a, in particular first, motor drive to effect an actuation of the first selector part and the second selector part.
  • a, in particular first, motor drive to effect an actuation of the first selector part and the second selector part.
  • Each on-load tap-changer of each phase is connected to a common motor drive.
  • the tapped transformer is designed as a dry-type transformer.
  • the second triangle is equilateral and the on-load tap-changer are arranged in the corners symmetrical to each other.
  • the symmetry axis of the second equilateral triangle is in particular coaxial with the axis of symmetry of the first triangle.
  • these tapped transformers are thus temple transformers and are similar to the example DE 40 29 097 A1 . US 5 202 664 A . EP 1 277 217 B1 . EP 2 367 181 A1 and US 2013 328,652 A1 known temple transformers.
  • the three on-load tap changers or the three selectors can be simply assigned to the phases such that for each phase-load tap-changer pair or phase-selector pair, analog or similar or equal connection ratios given and in particular short connection lines are possible.
  • the third triangle is equilateral and the motor drive are arranged in the corners symmetrical to each other.
  • the axis of symmetry of the third equilateral triangle is in particular coaxial with the axis of symmetry of the first equilateral triangle and / or with the axis of symmetry of the second equilateral triangle.
  • the even or odd winding taps of a control winding of the first or second winding are alternately preselected and connected.
  • FIG. 1 shows a schematic representation of a first embodiment of a tapped transformer 15 with an on-load tap-changer 10 in a first embodiment.
  • the step transformer 15 usually has three phases 16, 17, 18, wherein here only a first phase 16 is shown.
  • Each phase 16, 17, 18 consists of a first winding 20 and a second winding 30, which are inductively coupled together.
  • the first winding 20 consists of a control winding 21 and a main winding 22.
  • the control winding 21 has even-numbered winding taps 23.
  • the second winding 30 also has a control winding 31 and a main winding 32.
  • the control winding 31 of the second winding 30 has odd-numbered winding taps 33.
  • the on-load tap-changer 10 has a selector 40 and a diverter switch 60.
  • the selector 40 consists of a first selector portion 41 and a second selector portion 46, both of which are of linear construction.
  • the two selector parts 41, 46 do not necessarily have to be linear, but may for example also be arranged in a circle, distributed over several levels.
  • the first selector part 41 has step contacts 44 which are electrically connected to the even-numbered winding taps 23 of the control winding 21 of the first winding 20.
  • the second selector part 46 has tap contacts 49 which are electrically connected to the odd-numbered winding taps 33 of the control winding 31 of the second winding 30.
  • first selector part 41 has a first discharge rail 51 and a second discharge rail 52.
  • the second selector part 46 also has a first discharge rail 53 and a second discharge rail 54.
  • a selector arm 42, 43, 47, 48 is arranged, which has an electrically conductive connection between an even-numbered winding tap 23, 33 and an associated discharge rail 51, 52, 53, 54 produces.
  • the discharge rails 51, 52, 53, 54 are also electrically connected to the diverter switch 60.
  • the diverter switch 60 consists of a first and a second switching side 60A, 60B, which may be either open or closed, that is, a current I lead or interrupt. These states are represented in this view by simple, individual switch symbols, but may be composed of a plurality of switching devices connected in parallel and in series.
  • the diverter switch 60 may be formed as desired in any manner, for example, according to one of the below with reference to FIG. 3 and 5 to 7 described embodiments.
  • FIG. 2a - 2g is the sequence of switching to voltage regulation in the tapped transformer 15 of FIG. 1 shown.
  • first the first selector arm 42 of the first selector part 41 is driven to the next stage contact 44 to be connected with the number 4 of the first selector part 41 without power and the second selector arm 48 of the second selector part 46 the already contacted by the first selector arm 47 of the second selector part 46 stage contact 49 with the number 5.
  • a suitable switching sequence or actuation sequence FIG. 4
  • the switching side 60A is now closed and the switching side 60B is opened.
  • a conductive connection is made from the even-numbered winding tap 23 with the number 4 via the step contact 44 with the number 4 of the first selector part 41, the first selector arm 42, the first discharge rail 51, the first switching branch 60A, the second discharge rail 54 of the second selection part 46 , the second selector arm 48 and the stage contact 49 with the number 5 made, which with the odd number Winding tap 33 is connected to the number 5, as in FIG. 2c is shown.
  • FIG. 2d An odd-numbered winding tap 33 of the control winding 31 is used for this purpose.
  • the second selector arm 43 of the first selector part 41 drives to the already selected by the first selector arm 42 stage contact 44 with the number 4, which is connected to the even winding taps 33.
  • the first selector arm 47 of the second selector part 46 approaches the next stage contact 49 with the number 3 to be connected.
  • the second switching side 60B is closed and the first switching side 60A is opened. This will, as in FIG. 2e can be seen, an odd-numbered winding tap 33 is switched on and the first winding 20 and the second winding 30 via the second switching side 60B connected to each other.
  • an even-numbered winding tap 23 is used again, as in FIG. 2f is shown.
  • the first selector arm 42 of the first selector part 41 selects the next stage contact 44, which is connected to the even-numbered winding tap 23 of the control winding 21 of the first winding 20.
  • the second selector arm 48 selects the stepped contact 49 already approached by the first selector arm 47.
  • FIG. 3 1 is a first embodiment of a diverter switch 60 for an on-load tap-changer 10, which is designed, for example, according to the first embodiment.
  • This has a first switching side 60A and a second switching side 60B.
  • the first switching side 60A when closed, connects the first diverter rail 51 of the first selector part 41 and the second diverter rail 54 of the second selector part 46.
  • the second switch side 60B in the closed state, connects the first diverter rail 53 of the second selector part 46 and the second diverter rail 52 of the first selector part 41.
  • Both switching sides 60A, 60B have a first and a second switching branch 61, 62, 63, 64, which are arranged parallel to one another.
  • each first switching branch 61, 63 a vacuum interrupter MSVa or MSVb acting as a main contact is arranged.
  • a mechanical switch MDCa or MDCb is designed as a disconnector. The circuit breakers are not used for commutation, but for activation, ie the galvanic separation of the non-load current leading load branch.
  • the resistors Ra, Rb are formed as a cast iron resistor.
  • FIG. 5 shows a second embodiment of a diverter switch 60 for an on-load tap-changer 10. This embodiment is similar to the first embodiment, so that below the differences are explained in more detail below.
  • additional permanent main contacts MCa or MCb are provided in both switching sides 60A, 60B, which in a known manner in steady state operation take over the continuous current and relieve the respective main contact acting vacuum interrupter MSVa or MSVb.
  • Such an additional arrangement of permanent main contacts MCa or MCb is in the context of the invention of course also possible in the further explained embodiments of the invention.
  • the order in which the individual vacuum interrupters and mechanical switches are actuated can be determined freely.
  • FIG. 6 shows a third embodiment of a diverter switch 60 for an on-load tap-changer 10. This embodiment is similar to the first embodiment, so that in the following all the differences are explained in more detail.
  • the mechanical switch MDCa or MDCb is different from the first embodiment in FIG. 3 in series with the vacuum interrupter MSVa or MSVb in the first switching branches 61, 63 and additionally a second mechanical switch TDCa or TDCb in series with the vacuum interrupter TTVa or TTVb in the second switching branches 62, 64 arranged.
  • the order in which the individual vacuum interrupters and mechanical switches are actuated can be determined freely.
  • FIG. 7 shows a fourth embodiment of a diverter switch 60 for an on-load tap-changer 10. This embodiment is similar to the first embodiment, so that in the following all the differences are explained in more detail.
  • n is a resistor Ra, Rb arranged in each first switching branch 61, 63, and vacuum interrupters MSVa, MSVb in each second switching branch 62, 64.
  • a mechanical switch MDCa, MDCb as a disconnector and acting as a resistance contacts vacuum interrupters TTVa, TTVb are connected in series. The order in which the individual vacuum interrupters and mechanical switches are actuated can be determined freely.
  • FIG. 8th shows three on-load tap changers, namely a first on-load tap-changer 10, a second on-load tap-changer 55 and a third on-load tap-changer 56 in a second embodiment, which are used for a three-phase tapped transformer 15.
  • This embodiment is similar to the first embodiment, so that below all the differences are explained in detail.
  • the first and second selector parts 41, 46 of the respective selector are driven via a transmission directly below, namely, a first transmission 70, a second transmission 36, and a third transmission 37.
  • a transmission directly below namely, a first transmission 70, a second transmission 36, and a third transmission 37.
  • resistors 67 of the two switching sides 60A, 60B are arranged under each gear 70, 36, 37.
  • a diverter switch namely a first diverter switch 60, a second diverter switch 38 and a third diverter switch 39 is mounted, which is likewise actuated via the respective gear 70, 36, 37.
  • All on-load tap-changers 10, 55, 56 are or are connected via a common linkage 71 to a common motor drive 72.
  • the resistors 67 are each formed as a cast iron resistor and each comprise the resistors Ra, Rb of the respective diverter switch 60, 38, 39.
  • Each diverter switch 60, 38, 39 is here by way of example according to the in FIG. 3 formed in the first embodiment shown, but can also according to the in the FIG. 5 shown second embodiment or in the FIG. 6 shown third embodiment or in the FIG. 7 shown fourth embodiment or as needed also be formed in other ways.
  • each on-load tap-changer 10, 55, 56 comprises two electrically insulating uprights 11 each having an upper stator end 12 and a lower stator end 13 which is fixed to a base 14 which is at ground potential.
  • the base 14 is here an example of part of the tapped transformer 15, but may also be part of at least one of the on-load tap-changer 10, 55, 56.
  • the selectors 40, 45, 50 are respectively attached to the respective upper stator ends 12 and disposed above the respective upper stator ends 12.
  • the diverter switches 60, 38, 39 are respectively fixed to the upper respective stator ends 12 and disposed above the respective upper stator ends 12 and below the respective selector 40, 45, 50.
  • the gears 70, 36, 37 are respectively secured to the respective upper stator ends 12 and disposed above the respective upper stator ends 12 and below the respective selector 40, 45, 50 and above the resistors 67.
  • the linkage 71 comprises electrically isolating distribution shafts extending substantially horizontally from the motor drive 72 to the pedestal 14 and further in the pedestal 14 to below the pedestals 11 of the respective on-load tap changers 10, 55, 56, as well as for each on-load tap-changer 10 , 55, 56 an electrically insulating drive shaft, namely a first, a second and a third drive shaft 19, 34, 35, each extending substantially vertically from the base 14 to the respective transmission 70, 36, 37.
  • Each drive shaft 19, 34, 35 is coupled on the one hand in the base 14 to one of the distribution shafts and on the other hand to the respective transmission 70, 36, 37.
  • the drive shafts 19, 34, 35 extend here between the two respective uprights 11, but they can also extend through one of the respective uprights 11 from its lower stator end 13 to its upper stator end 12.
  • gear 70, 36, 37 are respectively attached to the respective lower stator ends 13 and below the respective lower stator ends 13, in particular in the base 14, are arranged and that the linkage 71 instead of the drive shafts 19, 34, 35 for each on-load tap-changer 10, 55, 56 comprises an electrically isolated output shaft, not shown, each substantially vertical from the respective transmission 70, 36, 37 to the respective selector 40, 45, 50 and the respective diverter switch 60, 38, 39 run.
  • Each transmission 70, 36, 37 is coupled in the base 14 to one of the distribution shafts, and each output shaft is on the one hand to the respective transmission 70, 36, 37 and on the other hand to the respective selector 40, 45, 50 and respective diverter switch 60, 38, 39 is coupled.
  • the output shafts extend here between the two respective uprights 11, but they can also extend through one of the respective uprights 11 from its lower stator end 13 to its upper stator end 12.
  • each on-load tap-changer 10, 55, 56 comprises a motor drive, not shown, attached to the respective lower stator ends 13 and below the respective lower Stand ends 13, in particular in the base 14, is arranged.
  • Each output shaft is coupled on the one hand to the respective motor drive and on the other hand to the respective selector 40, 45, 50 and the respective diverter switch 60, 38, 39.
  • the motor drives are preferably synchronized by mechanical and / or electronic coupling.
  • FIG. 10 is a schematic representation of a second embodiment of the tapped transformer 15 with an on-load tap-changer 10 in a third embodiment.
  • This second embodiment of the step-up transformer 15 is similar to the first embodiment, and this third embodiment of the on-load tap-changer 10 is similar to the second embodiment, so that in the following the differences are explained in detail.
  • the phases 16, 17, 18 of the tapped transformer 15 are arranged symmetrically to one another in the corners of a first equilateral triangle 24 with an axis of symmetry 25 passing through its center of gravity, as in a temple transformer.
  • the step transformer 15 comprises the one on-load tap-changer 10 in common for the three phases 16, 17, 18, which is designed as a three-phase on-load tap-changer 10.
  • the on-load tap changer 10 for the second phase 17 comprises a second selector 45 and a second diverter switch 38 and for the third phase 18 a third selector 50 and a third diverter switch 39.
  • These two selectors 45, 50 are formed like the first selector 40 , and these two diverter switches 38, 39 are as the device first diverter switch 60 is formed.
  • the selectors 40, 45, 50 and the diverter switches 60, 38, 39 are arranged symmetrically to each other in the corners of a second equilateral triangle 26 with an axis of symmetry 27 passing through its center of gravity.
  • the symmetry axes 25, 27, 29 are coaxial with each other.
  • the step-up transformer 15 comprises, for each phase 16, 17, 18, connecting lines 65 which electrically connect the step contacts 44 of the first selector part 41 of the respective selector 40, 45, 50 with the even-numbered winding taps 23 of the control winding 21 of the respective first winding 20, and connection lines 66, the step contacts 49 of the second selector part 46 of the respective selector 40, 45, 50 with the odd-numbered winding taps 33 of the control winding 31 of the respective second winding 30 electrically conductively connect.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Control Of Electrical Variables (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP14747370.6A 2013-08-27 2014-08-01 Laststufenschalter, stufentransformator zur spannungsregelung und verfahren zur durchführung einer umschaltung im stufentransformator Active EP3039698B1 (de)

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DE102013109289.6A DE102013109289B8 (de) 2013-08-27 2013-08-27 Laststufenschalter, Stufentransformator zur Spannungsregelung und Verfahren zur Durchführung einer Umschaltung im Stufentransformator
DE102014103526.7A DE102014103526A1 (de) 2014-03-14 2014-03-14 Laststufenschalter, Stufentransformator zur Spannungsregelung und Verfahren zur Durchführung einer Umschaltung im Stufentransformator
PCT/EP2014/066634 WO2015028253A1 (de) 2013-08-27 2014-08-01 Laststufenschalter, stufentransformator zur spannungsregelung und verfahren zur durchführung einer umschaltung im stufentransformator

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WO2015028253A1 (de) 2015-03-05
KR20160047543A (ko) 2016-05-02
US9941064B2 (en) 2018-04-10
BR112016004050B1 (pt) 2022-05-31
CN105580100B (zh) 2017-12-12
ES2705325T3 (es) 2019-03-22
MX354634B (es) 2018-03-14
KR101914218B1 (ko) 2019-01-14
CN105580100A (zh) 2016-05-11
US20160181024A1 (en) 2016-06-23
EP3039698A1 (de) 2016-07-06
JP6438028B2 (ja) 2018-12-12
JP2016529726A (ja) 2016-09-23
BR112016004050A2 (zh) 2017-08-01
RU2016111114A (ru) 2017-10-04
MX2016002452A (es) 2016-06-24

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