WO2024017645A1 - Elektrisches betriebsmittel mit stufenschalter - Google Patents
Elektrisches betriebsmittel mit stufenschalter Download PDFInfo
- Publication number
- WO2024017645A1 WO2024017645A1 PCT/EP2023/068579 EP2023068579W WO2024017645A1 WO 2024017645 A1 WO2024017645 A1 WO 2024017645A1 EP 2023068579 W EP2023068579 W EP 2023068579W WO 2024017645 A1 WO2024017645 A1 WO 2024017645A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- module
- electrical equipment
- winding
- control unit
- designed
- 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.)
- Ceased
Links
Classifications
-
- 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
- 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
-
- 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
- H01H29/00—Switches having at least one liquid contact
- H01H29/02—Details
- H01H29/04—Contacts; Containers for liquid contacts
-
- 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
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/541—Contacts shunted by semiconductor devices
Definitions
- the invention relates to an electrical equipment comprising at least one control winding with winding taps, at least one partial winding and a tap changer for changing a transmission ratio, an impedance or a voltage used for excitation of the electrical equipment.
- reactive power control represents an essential component of safe, efficient and loss-minimized network management.
- Suitable operating resources are already known from the prior art both for network regulation in the steady-state range and for dynamic voltage regulation.
- controllable transformers, phase shifters or controllable shunt reactors are used to control stationary network operation.
- static synchronous compensators (STATCOM) or static reactive power compensators (SVC) are used to control dynamic network behavior.
- the resources for control in the dynamic range will become increasingly relevant in the foreseeable future for a secure supply of network operations due to the energy transition and the integration of decentralized energy generation into network operations, since the feed-in from renewable energies is less easy to plan.
- Another area of application in which the aforementioned time ranges play a role are electrolysis systems for hydrogen production, in which rectifier transformers controlled by tap changers are used.
- Particularly relevant for participation in the balancing energy market is the possibility of control in the dynamic time range in order to be able to provide the network with positive or negative balancing energy as quickly as possible.
- the improved concept is based on the idea of combining a classic tap changer, as is well known from the prior art, with a power electronic tap changer in series. Since the power electronic tap changer can change its switching position quickly, namely within milliseconds, and can assume any position, it enables the voltage to be quickly adjusted to rapidly changing load and feed conditions. The steady state range is operated with the classic tap changer, covering the largest possible control range. In this way, a great deal of flexibility can be achieved for network management as well as system and process management.
- an electrical equipment which has at least one main winding, at least one control winding with winding taps, at least one partial winding and a tap changer for changing a gear ratio, an impedance or a voltage used for excitation of the electrical equipment.
- the electrical equipment can be designed as a controllable transformer, as a phase shifter transformer, as a controllable choke or as a controllable transformer with a capacitor.
- the electrical equipment is designed as a controllable transformer and the tap changer is designed to change the transmission ratio of the controllable transformer.
- the electrical equipment is designed as a controllable throttle and the tap changer is designed to change the impedance of the controllable throttle.
- the electrical equipment comprises a first inductive arrangement and a second inductive arrangement.
- the actual voltage in the first inductive arrangement excites the second inductive arrangement and thereby increases the performance of the first inductive arrangement.
- an exciter transformer, a first inductive arrangement is supplemented by a booster transformer, a second inductive arrangement.
- the voltage used to excite the booster transformer is changed using the tap changer. The arrangement makes it possible to set the operating parameters of the tap changer, current and voltage, more flexibly, especially for units with high output.
- the electrical equipment is designed as a phase shifter transformer.
- Phase-shifting transformers are special power transformers that can specifically influence the phase angle of the voltage or the electrical load flow via an overhead line by introducing a transverse voltage or an oblique voltage.
- the phase shifter transformer includes a series transformer and an excitation transformer.
- the tap changer is designed to set a specific phase shift by changing the transmission ratio of the excitation transformer.
- the tap changer comprises a first module for connecting the winding taps of the control winding and a second module with semiconductor switching elements for quickly connecting, counter-switching or bridging the at least one partial winding.
- the Second module includes at least one submodule with semiconductor switching elements and a bypass switch.
- the at least one partial winding is at least as large as a portion of the control winding located between two adjacent winding taps of the control winding.
- the at least one partial winding has a certain number of turns, which is at least as large as the smallest number of turns present between two adjacent winding taps of the control winding.
- the number of turns of the several partial windings can be integer multiples of one another.
- the first module is designed as an on-load tap changer, in particular as a rapid resistance switch for uninterrupted switching between different winding taps of the control winding of the electrical equipment and has a selector for the power-free preselection of the winding tap of the electrical equipment to which the switch is to be made, as well as a diverter switch for the actual, uninterrupted switching from the previously connected winding tap to the new, preselected winding tap.
- the selector usually has two movable selector contacts, which cover the winding taps.
- the diverter switch usually has switching contacts and resistors for the actual load transfer.
- the switching contacts are designed, for example, as vacuum interrupters.
- the resistors serve to limit the circulating current flowing briefly in the diverter switch during the switching process and are also referred to as switching resistors.
- the first module is designed as a reactor switch.
- the reactor switching principle the circulating current is limited by chokes, also known as reactors.
- the electrical equipment has several partial windings and the second module has several sub-modules with semiconductor switching elements. At least one partial winding is assigned to each sub-module and each sub-module is designed for rapid connection, counter-connection or bridging of the at least one assigned partial winding. Bridging specifically means that no current flows through the respective partial winding.
- a submodule comprises, for example, four commutation cells that are designed as a bridge circuit.
- a commutation cell comprises two thyristor paths connected in anti-parallel, whereby a path can also consist of several thyristors connected in series.
- bypass switch is designed to bridge the second module with the at least one submodule with semiconductor switching elements.
- the bypass switch is designed as a circuit breaker or load disconnector.
- the tap changer can be actuated in a predefined operating mode in which the bypass switch is closed and the at least one submodule is bridged with semiconductor switching elements.
- the tap changer when the tap changer is in the predefined operating mode, only the first module is used to change the transmission ratio, the impedance or the voltage used for excitation of the electrical equipment.
- the second module when the tap changer is in the predefined operating mode, the second module assumes a neutral position in which the at least one partial winding is bridged. Bridged, i.e. H. at potential, but not carrying current.
- the semiconductor switching elements of the second module are connected to one another in such a way that a bypass is formed for the at least one partial winding.
- the advantage of this embodiment is that the electrical equipment can be operated with the first module without interruption, while the bypass switch carries the continuous current and thus bridges the semiconductor switching elements. This may be necessary, for example, if the second module is being serviced or there is a malfunction due to a failure of the power supply for controlling the semiconductor switching elements.
- the tap changer in the predefined operating mode, losses caused by the semiconductor switching elements of the second module can be avoided.
- the tap changer is operated in a predefined, second operating mode in which the change in the transmission ratio, the impedance or the voltage used for excitation is carried out by means of the second module he follows.
- the advantage of this embodiment is that when the tap changer is operated in the second operating mode, the mechanics and the electrically switching contacts of the first module are protected and its service life is extended due to less wear on the corresponding components.
- the first module comprises a first control unit
- the second module comprises a second control unit
- the electrical equipment comprises a system controller which is designed to actuate the first and second control units.
- the second module and the first control unit and the second control unit and the system controller are each arranged in a separate housing.
- the second module and the first control unit and the second control unit and the system controller are arranged in a common housing.
- the second module and the second control unit are arranged in a common housing.
- the second module and the first control unit are arranged in a common housing.
- the second module and the second control unit and the system controller are arranged in a common housing.
- the second module and the first control unit and the system controller are arranged in a common housing.
- the second module and the first control unit and the second control unit are arranged in a common housing.
- the first control unit and the second control unit are arranged in a common housing.
- the first control unit and the second control unit and the system controller are arranged in a common housing.
- the second module is arranged in a housing of the electrical equipment.
- bypass switch is arranged in a separate housing or in a common housing with the second module.
- the first control unit comprises a motor drive.
- the motor drive is preferably designed to operate the selector contacts and the switching contacts of the on-load tap changer to connect the winding taps of the control winding.
- the motor drive can be designed as a direct drive without an intermediate gear.
- the second control unit is designed, for example, as a microcontroller.
- the second control unit is designed to actuate the at least one or more sub-modules or their associated commutation cells in a suitable manner, such that the at least one or more partial windings are quickly switched on or off the control winding or are bridged.
- Figure 1 shows a first embodiment of an electrical equipment according to the improved concept in a schematic representation
- Figure 2 shows a second embodiment of the electrical equipment according to the improved concept in a schematic representation
- Figure 3 shows a third embodiment of the electrical equipment according to the improved concept in a schematic representation
- Figure 4 shows a preferred embodiment of a method according to the improved concept.
- a first embodiment of an electrical equipment 1 according to the improved concept is shown in a schematic representation.
- the electrical equipment 1 is designed here, for example, as a single-phase controllable transformer.
- the controllable transformer 1 has a main winding 2, a control winding 3 with n winding taps and two partial windings 4 and 5 on the primary or secondary side.
- the partial winding 5 has a larger number of turns than the partial winding 4, for example three times as many turns.
- the number of turns of the partial winding 4, and consequently also that of the partial winding 5 is greater than the smallest number of turns present between two adjacent winding taps, for example between n and n + 1, of the control winding 3.
- the number of partial windings is not limited to two. In principle, several partial windings can also be provided, the number of windings of which can each have an integer multiple of the partial winding 4.
- the transformer 1 has a tap changer 6 for changing the transmission ratio of the transformer 1.
- the tap changer 6 comprises a first module 7 for connecting the winding taps n, n+1 of the control winding 3 and a second module 8 connected in series with the first module 7 for connecting, counter-connecting or bridging the partial windings 4, 5.
- the first module 7 is for Control is provided in the steady state range and the second module 8 is provided for control in the dynamic time range.
- the first module 7 is preferred as an on-load tap changer consisting of a selector for power-free preselection of the winding taps n, n+1 and a load changeover switch for uninterrupted switching from the previously connected winding tap n to the new, preselected winding tap n+1.
- the on-load tap changer can have a preselector, which can be designed as a coarse step or turner.
- the first module 7 is shown in a very simplified manner in FIG.
- the second module 8 preferably has two submodules 9, each with four commutation cells in an H-bridge circuit.
- a commutation cell here has a pair of thyristors connected in anti-parallel.
- a sub-winding 4 or 5 is assigned to each sub-module 9 and each sub-module 9 is designed to switch the respective sub-winding 4 or 5 on or off the control winding 3 quickly, ie within 10 to 1000 milliseconds, by means of the commutation cells or semiconductor switching elements, or to bridge the respective partial winding 4 or 5, such that the partial winding 4, 5 has a certain potential, but no current flows through it.
- the second module 8 has a bypass switch 10, which is arranged in a connecting line 14 parallel to the second module 8 and is designed to bridge the second module 8 or the two sub-modules 9.
- the connecting line 14 opens into a load derivation 15.
- the first module 7 includes a first control unit 1 1, which is preferably designed as a motor drive, particularly preferably as a direct drive without an intermediate gear, which operates the selector and the diverter switch.
- the second module 8 is controlled by a second control unit 12.
- the second control unit 12 is designed to actuate the two sub-modules 9 or their associated commutation cells in a suitable manner, such that the two partial windings 4 and 5 are quickly switched on or off to the control winding 3, or are bridged.
- the second control unit 12 is designed to actuate the bypass switch 10.
- the first control unit 11 and the second control unit 12 are actuated by a system controller 13 depending on one another.
- FIG. 2 a second embodiment of the electrical equipment according to the improved concept is shown in a schematic representation.
- the electrical equipment 1 from FIG. 2 reference is made to the previous explanations regarding the electrical equipment from FIG.
- FIG. 2 shows an electrical equipment 1, which is designed as a controllable throttle. Such arrangements are used to control reactive power in the energy supply network.
- the controllable throttle 1 also has a coarse step winding 16 and a coarse step controller 17.
- the coarse stage controller 17 can assume a first position in which it contacts a first end A of the coarse stage winding 16 and a second position in which it contacts a second end B of the coarse stage winding 16. If the coarse step controller 17 is in the first position, no current flows through the coarse step winding 16. However, if the coarse step controller 17 is in the second position, current flows through the coarse step winding 16 and is therefore added to the main winding 2 and the control winding 3. In this way the Control range of throttle 1 increased.
- the throttle 1 is housed in a boiler 18 and has a core 19 on which the windings 2, 3, 16, 4, 5 are arranged.
- the on-load tap changer 7 is also arranged in this boiler 18.
- the electrical lines of the on-load tap changer 7 and the windings 2, 3, 16, 4, 5 are led out of the boiler 18 via bushings 20. Outside the boiler 18, for example, flexible lines can be connected to the bushings 20, which in turn lead to the second module 8 and/or the control units 11, 12.
- the second module 8, which is shown here in simplified form, and the bypass switch 10 are arranged together in a first housing 21 and the first control unit 11, the second control unit 12 and the system controller 13 are arranged together in a second housing 22 .
- the housings 21 and 22 can be designed as commercially available control cabinets or containers and can be arranged directly on the boiler 18 of the throttle 1 or the electrical equipment or in spatial proximity, for example within the substation in which the equipment 1 is located. It is also possible to arrange the second module 8, the bypass switch 10, the control units 11 and 12 as well as the system controller 13 in a common housing or to provide separate housings for the individual units.
- Figure 3 shows a third embodiment of the electrical equipment according to the improved concept in a schematic representation.
- the electrical equipment 1 from FIG. 3 reference is made in an analogous manner to the previous explanations regarding the electrical equipment from FIGS .
- an electrical equipment 1 is shown, which is designed as a phase shifter transformer.
- the phase shifter transformer 1 is designed here as a single-phase example.
- the phase shifter transformer 1 shown in Figure 3 is designed as a cross-controller for active power control and has a two-core design consisting of a series transformer 23 and an excitation transformer 24, each of which is arranged on a core.
- the excitation transformer 24 has a primary side with a main winding 2 and a secondary side comprising a control winding 3 with n winding taps and two partial windings 4 and 5 and one On-load tap changer 6.
- a voltage is coupled out on its primary side via the excitation transformer 24 and this is regulated in size on the secondary side via the control winding 3 and the two partial windings 4 and 5 by means of the on-load tap changer 6 as an additional voltage.
- this additional voltage generated in the excitation transformer 24 is connected in a delta. This results in a phase shift of the additional voltage by 90 degrees compared to the input voltage at the phase shifter transformer.
- phase shifter transformer in the form of a phase shifter transformer is not limited to the embodiment shown.
- the phase shifter transformer can be designed in a symmetrical or asymmetrical two-core design, in a single-core design with a control winding in the star point, as a cross-regulator or skew regulator, or as an autotransformer with two iron circuits and a grounded booster circuit.
- Figure 4 shows a flowchart of an advantageous embodiment of a method according to the improved concept, in particular a method for commissioning an electrical equipment 1 according to one of the embodiments, as explained in connection with Figures 1 to 3.
- a circuit breaker assigned to the electrical equipment 1 is open, that is, the circuit between the electrical equipment and a corresponding energy network to which the electrical equipment is assigned is interrupted. In other words, the electrical equipment is separated from the associated energy network.
- the bypass switch 10 is in an open state.
- the bypass switch 10 is now closed in step a.
- a next step b the circuit breaker is closed and the electrical equipment 1 is thus connected to the energy network.
- increased inrush currents can occur.
- the second module is already ready for operation and can be used to change the gear ratio, the impedance or the voltage used for excitation of the electrical equipment 1.
- the second module 8 is in the neutral position commutated, in which the partial windings 4 and 5 are bridged, i.e. no current flows through them.
- the bypass switch 10 is opened again. Now the second module 8 is also ready for operation and can be used alongside the first module 7 to change the gear ratio, the impedance or the voltage used for excitation of the electrical equipment.
- the combination of a classic on-load tap changer, a first module, with a power electronic tap changer, a second module enables the realization of a large control range with a cost-effective and space-saving arrangement at high potential.
- the second module for fast control in the dynamic control range which is more expensive than the first module, can be designed to be optimized for the respective application. Consequently, the second module can only be designed accordingly for that part of the control for which the power electronics-based second module offers an advantage due to its speed of sound.
- the combined solution is significantly more space-saving than a purely power electronics-based solution.
- a large degree of flexibility can be achieved with a comparatively small space requirement for network management and furnace operation.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380055191.9A CN119585830A (zh) | 2022-07-21 | 2023-07-05 | 具有分接开关的电运行器件 |
| JP2025502840A JP2025524693A (ja) | 2022-07-21 | 2023-07-05 | 負荷時タップ切換器を有する電気機器 |
| KR1020257004415A KR20250037505A (ko) | 2022-07-21 | 2023-07-05 | 탭 절환기를 포함하는 전기적 작동 수단 |
| US18/997,102 US20260038736A1 (en) | 2022-07-21 | 2023-07-05 | Electrical operating means comprising a tap changer |
| EP23744678.6A EP4544579A1 (de) | 2022-07-21 | 2023-07-05 | Elektrisches betriebsmittel mit stufenschalter |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022118217.7 | 2022-07-21 | ||
| DE102022118217.7A DE102022118217A1 (de) | 2022-07-21 | 2022-07-21 | Elektrisches Betriebsmittel mit Stufenschalter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024017645A1 true WO2024017645A1 (de) | 2024-01-25 |
Family
ID=87429375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/068579 Ceased WO2024017645A1 (de) | 2022-07-21 | 2023-07-05 | Elektrisches betriebsmittel mit stufenschalter |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20260038736A1 (de) |
| EP (1) | EP4544579A1 (de) |
| JP (1) | JP2025524693A (de) |
| KR (1) | KR20250037505A (de) |
| CN (1) | CN119585830A (de) |
| DE (1) | DE102022118217A1 (de) |
| WO (1) | WO2024017645A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118507229A (zh) * | 2024-07-15 | 2024-08-16 | 南方电网科学研究院有限责任公司 | 一种移相变压器及其相位角调节装置 |
| EP4686031A1 (de) * | 2024-07-22 | 2026-01-28 | Siemens Energy Global GmbH & Co. KG | Fehlerüberbrückungsfähigkeit von elektrolyseanlagen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4881315U (de) * | 1971-12-30 | 1973-10-04 | ||
| WO2012079666A2 (de) * | 2010-12-17 | 2012-06-21 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837684B2 (ja) * | 1977-12-06 | 1983-08-18 | 富士電機株式会社 | 負荷時タップ切換器付変圧器 |
-
2022
- 2022-07-21 DE DE102022118217.7A patent/DE102022118217A1/de active Pending
-
2023
- 2023-07-05 US US18/997,102 patent/US20260038736A1/en active Pending
- 2023-07-05 WO PCT/EP2023/068579 patent/WO2024017645A1/de not_active Ceased
- 2023-07-05 EP EP23744678.6A patent/EP4544579A1/de active Pending
- 2023-07-05 KR KR1020257004415A patent/KR20250037505A/ko active Pending
- 2023-07-05 CN CN202380055191.9A patent/CN119585830A/zh active Pending
- 2023-07-05 JP JP2025502840A patent/JP2025524693A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4881315U (de) * | 1971-12-30 | 1973-10-04 | ||
| WO2012079666A2 (de) * | 2010-12-17 | 2012-06-21 | Maschinenfabrik Reinhausen Gmbh | Stufenschalter |
Non-Patent Citations (1)
| Title |
|---|
| STRZELECKI RYSZARD ET AL: "Distribution Transformer with Multi-Zone Voltage Regulation for Smart Grid System Application", 2019 IEEE 6TH INTERNATIONAL CONFERENCE ON ENERGY SMART SYSTEMS (ESS), IEEE, 17 April 2019 (2019-04-17), pages 132 - 137, XP033577035, DOI: 10.1109/ESS.2019.8764193 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118507229A (zh) * | 2024-07-15 | 2024-08-16 | 南方电网科学研究院有限责任公司 | 一种移相变压器及其相位角调节装置 |
| EP4686031A1 (de) * | 2024-07-22 | 2026-01-28 | Siemens Energy Global GmbH & Co. KG | Fehlerüberbrückungsfähigkeit von elektrolyseanlagen |
| WO2026022029A1 (en) | 2024-07-22 | 2026-01-29 | Siemens Energy Global GmbH & Co. KG | Fault ride through capability of electrolysis plants |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119585830A (zh) | 2025-03-07 |
| JP2025524693A (ja) | 2025-07-30 |
| EP4544579A1 (de) | 2025-04-30 |
| DE102022118217A1 (de) | 2024-02-01 |
| US20260038736A1 (en) | 2026-02-05 |
| KR20250037505A (ko) | 2025-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69405339T2 (de) | Elektrische Umschaltung | |
| DE69611176T2 (de) | Verfahren und vorrichtung für die stufenlose einstellung und regulierung des windungsverhältnises eines transformatores und transformator mit einer solchen vorrichtung | |
| EP0152002B1 (de) | Phasenschieber | |
| DE102009014243A1 (de) | Ortsnetztrafo, bzw. Schaltung für einen elektrischen Verteiltransformator | |
| DE102012103048B4 (de) | Regeltransformatoren zur Spannungsregelung mit Halbleiter-Schaltelementen | |
| EP2346150A1 (de) | Modulare Spannungsversorgungsanordnung, insbesondere für Reaktoren zur Herstellung von Polysilicium | |
| WO2024017645A1 (de) | Elektrisches betriebsmittel mit stufenschalter | |
| WO2012079666A2 (de) | Stufenschalter | |
| DE102004046926B3 (de) | Einrichtung zur Regelung der elektrischen Spannung | |
| DE102015101153A1 (de) | System und Verfahren zum Betrieb eines Last-Stufenschalters | |
| CA2352070C (en) | Hybrid tap-changing transformer with full range of control and high resolution | |
| US5990667A (en) | Regulator with asymmetrical voltage increase/decrease capability for utility system | |
| EP0913916B1 (de) | Drehstromtransformator | |
| WO2014056694A1 (de) | Laststufenschalter mit ticklerwindung und verfahren zum betrieb eines laststufenschalters | |
| DE19933811A1 (de) | Drehstromtransformator für Mittel- und Hochspannungen mit einer Anordnung zur Spannungsregelung | |
| AT501582B1 (de) | Verfahren zur regelung der elektrischen spannung in elektrischen versorgungsnetzen sowie einrichtung zur durchführung des verfahrens | |
| AT411938B (de) | Verfahren und vorrichtung zur regelung der elektrischen spannung in elektrischen versorgungsnetzen und/oder verbraucheranlagen | |
| EP2084940B1 (de) | Reaktanzvorschalteinrichtung | |
| DE102014117810A1 (de) | Laststufenschalter | |
| DE19747712C2 (de) | Anordnung eines Stufenschalters an einem Stufentransformator | |
| EP3365906A1 (de) | Regelbarer ortsnetztransformator | |
| EP4070349B1 (de) | Vorrichtung zum anschluss an ein hochspannungsnetz | |
| WO2023217517A1 (de) | Verfahren und vorrichtung zum ändern eines übersetzungsverhältnisses, einer impedanz oder einer zur erregung verwendeten spannung | |
| DE102023118387B3 (de) | Vorrichtung zum erzeugen einer geregelten gleichspannung, vorrichtung zum erzeugen einer geregelten wechselspannung sowie verfahren zur betätigung der beiden vorrichtungen | |
| EP0823715B1 (de) | Drehstromtransformator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23744678 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025502840 Country of ref document: JP Ref document number: 18997102 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380055191.9 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023744678 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2023744678 Country of ref document: EP Effective date: 20250122 |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112025000955 Country of ref document: BR |
|
| ENP | Entry into the national phase |
Ref document number: 20257004415 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020257004415 Country of ref document: KR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202547013325 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202547013325 Country of ref document: IN |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380055191.9 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020257004415 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023744678 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 112025000955 Country of ref document: BR Kind code of ref document: A2 Effective date: 20250117 |
|
| WWP | Wipo information: published in national office |
Ref document number: 18997102 Country of ref document: US |