EP1446708A2 - Method and device for regulation of electrical voltage - Google Patents
Method and device for regulation of electrical voltageInfo
- Publication number
- EP1446708A2 EP1446708A2 EP02792562A EP02792562A EP1446708A2 EP 1446708 A2 EP1446708 A2 EP 1446708A2 EP 02792562 A EP02792562 A EP 02792562A EP 02792562 A EP02792562 A EP 02792562A EP 1446708 A2 EP1446708 A2 EP 1446708A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- winding
- regulating
- switch
- changeover switch
- 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- Withdrawn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
-
- 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
- G05F1/16—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 combined with discharge tubes or semiconductor devices
- G05F1/20—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 combined with discharge tubes or semiconductor devices semiconductor devices only
Definitions
- the invention relates to a method for regulating the electrical voltage in electrical supply networks and / or consumer systems with a regulating transformer and a device for carrying out the method.
- Control transformers are provided for voltage regulation of the networks in the central network nodes. Control transformers are used for step-by-step voltage regulation of electrical networks by changing the gear ratio. For this purpose, regulating transformers contain regulating windings with taps, which are switched under load using the transformer tap changer. The load current flow must not be interrupted or the winding stage between the taps concerned short-circuited during the switching processes. The second requirement results from the fact that during each switchover between two adjacent taps, they are necessarily briefly connected to each other due to the first requirement, and therefore a circuit current flows through the switch and the affected partial winding in the amount of the transformer short-circuit current, the effects of which Transformer, especially in periodic operation, cannot withstand. This transformer short-circuit current is relatively high since the internal resistance of the transformer is normally low. In addition, the tap changers of the transformers would have to be matched to the periodic switching of these high short-circuit currents.
- Control transformer in the course of the energy flow between at least one producer and at least one end user with one of the partial windings the changeover switch to be switched over is looped in, the control transformer having a high leakage impedance which limits the circulating current to the order of magnitude of the nominal current in the event of a short circuit in adjacent taps of the partial windings.
- the device for performing the method is characterized in that the
- Control transformer (3) is designed as a single-winding transformer, for example as an autotransformer, or a multi-winding transformer, for example as a full transformer.
- the regulating transformer is designed with a primary and / or secondary-side regulating winding, which is connected to the Winding ends and / or taps is connected to the winding ends and / or taps of the main winding.
- the regulating transformer is designed with a regulating winding on the intermediate circuit side.
- control transformer is designed as a two-winding transformer with a primary and / or secondary-side control winding.
- the regulating transformer is designed as a series regulator with a differential power proportional to the voltage difference to be regulated.
- regulating transformers or series regulators are therefore provided for voltage maintenance, in which the regulating winding for adapting the load-side voltage has the high intrinsic impedance or stray impedance according to the invention, which acts as a switching impedance integrated in the regulating transformer, so that the switching impedances known from the prior art and customary today of the tap changer and thus the resistance contacts are eliminated.
- the necessity of the switching impedances results from the fact that the internal resistance and short-circuit impedance of regulating transformers are much smaller than the load impedance for reasons of voltage maintenance, so that the circuit currents occurring during the switching processes without switching resistance are equal to short-circuit currents and thus significantly higher than the operating currents. If the short-circuit impedance of the control winding is increased, e.g. by widening the spreading gap, to such an extent that the circuit current occurring during the switching operations in the event of a short-circuit of adjacent taps is of the order of magnitude of the nominal current, the additional switching impedances are not required and the tap changer is simplified an ordinary switch.
- the control winding can be designed as desired, for example as a concentric or as a disk coil winding, with the corresponding taps. This principle can be used for fully transformers with regulating windings as well as autotransformers for series regulation.
- the control winding can be connected to the winding ends and / or taps of the primary and / or secondary and / or intermediate circuit-side main winding both via the winding ends and via taps.
- the device Since the device is primarily suitable for voltage regulation of network outlets, its performance based on the throughput is in the range of a few 10 kVA to a few 10 MVA.
- the changeover switch is a load changeover switch without resistance contact and having only main contacts.
- a diverter switch designed in this way is an economical solution.
- the changeover switch is a load selector without resistance contact.
- This design of the switch is also extremely simple in construction and economical to manufacture.
- the changeover switch can also be based on a multi-stage cam switch or a chain of relays or contactors or their components or a chain of electronic switches, in particular semiconductor switches, can be formed.
- These versions of the switch are also simple in construction and extremely reliable in robust operation.
- these switches can be based on all switching principles, such as air-open switching systems, switching systems under oil or SF6, and vacuum switching systems.
- Fig. 1 is a schematic diagram when arranging an autotransformer with a secondary-side control winding
- Fig. 2 is a schematic diagram when arranging a full transformer with secondary-side control winding, the one with its winding end
- FIG. 3 is a schematic diagram with the arrangement of an autotransformer with a primary-side control winding
- Fig. 4 is a schematic diagram with the arrangement of a full transformer with primary-side control winding, which has a tap with a winding
- Fig. 6 is a switch based on semiconductors.
- FIG. 1 shows a device for regulating the electrical voltage between a generator 1 (shown by the arrow) and a final consumer 2 (likewise indicated only by an arrow), a regulating transformer 3 in the form of an autotransformer being provided for the regulation.
- This autotransformer has a control winding with partial windings 4 on the secondary side.
- the control winding is connected to the primary winding 6 of the autotransformer via a tap 5, for example via a center tap. This allows both an increase and a decrease in the end-user voltage.
- the taps 5 of the control winding are optionally connected to the output to the end user 2 via a changeover switch 7.
- the switch 7 is controlled with the control device 8 unregulated or regulated via a voltage regulator 10.
- the switching takes place step by step by closing a switching path adjacent to the closed switching path and then opening the original switching path. As a result, the end-user voltage can be increased or decreased.
- an integrated overvoltage protection 11 can be provided on the end consumer 2 side.
- the regulating transformer 3 in the embodiment as an autotransformer has a widened spread gap 9. This increase in the leakage impedance limits the circulating current to the order of magnitude of the nominal current in the event of a short circuit.
- a regulating transformer 3 in the form of a full transformer with a regulating winding on the secondary side being provided for the regulation.
- the control winding is connected to the partial windings 4 via their winding end to a winding end of the secondary-side main winding of the control transformer 3.
- a switch 7 with its control device 8 is again provided on the partial windings 4.
- the control transformer 3 also has one widened spreading gap 9. The leakage impedance of the secondary main winding 14 is not increased.
- the changeover switch 7 is designed as a multi-stage cam switch and corresponds to the taps 5 of the partial windings 4.
- FIG. 3 shows a device for regulating the electrical voltage between a generator 1 and an end user 2, a regulating transformer 3 in the form of an autotransformer being provided for the regulation.
- This autotransformer has a regulating winding with partial windings 4 on the primary side.
- the control winding is connected to the primary winding 6 of the autotransformer via a tap 5, for example via a center tap. This allows both an increase and a decrease in the end-user voltage.
- the taps 5 of the control winding are optionally connected to the output to the end user 2 via a changeover switch 7.
- the switch 7 is controlled with the control device 8 unregulated or regulated via a voltage regulator 10.
- the switching takes place step by step by closing a switching path adjacent to the closed switching path and then opening the original switching path. As a result, the end-user voltage can be increased or decreased.
- an integrated overvoltage protection 11 can be provided on the end consumer 2 side.
- the regulating transformer 3 in the embodiment as an autotransformer has a widened spread gap 9. This increase in the leakage impedance limits the circulating current to the order of magnitude of the nominal current in the event of a short circuit.
- a control transformer 3 is provided for the control in the execution of a full transformer with primary-side control winding.
- the control winding is connected to the partial windings 4 via its winding tap to a winding tap of the main winding of the regulating transformer 3.
- a switch 7 with its control device 8 is again provided on the partial windings 4.
- the regulating transformer 3 also has a widened leakage gap 9 again. The leakage impedance of the secondary main winding 14 is not increased.
- the changeover switch 7 is designed as a multi-stage cam switch and corresponds to the taps 5 of the partial windings 4.
- the partial windings 4 are connected with their taps 5 to a series of contactors 10, which carry out the voltage regulation in accordance with the changeover switch 7 in FIGS. 1 and 2.
- the control of the individual contactors 12 or relays takes place via control devices 8, which are connected to a voltage regulator.
- the partial windings 4 are connected with their taps 5 to a series of electronic switches 13, in particular semiconductor switches, which carry out the voltage regulation in accordance with the changeover switch 7 in FIGS. 1 and 2.
- the individual semiconductor switches are controlled by electronic devices which are connected to the voltage regulator.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0182301A AT501582B1 (en) | 2001-11-20 | 2001-11-20 | METHOD FOR CONTROLLING ELECTRICAL VOLTAGE IN ELECTRICAL SUPPLY NETWORKS AND DEVICE FOR CARRYING OUT SAID METHOD |
AT18232001 | 2001-11-20 | ||
PCT/AT2002/000321 WO2003044611A2 (en) | 2001-11-20 | 2002-11-19 | Method and device for regulation of electrical voltage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1446708A2 true EP1446708A2 (en) | 2004-08-18 |
Family
ID=3689054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02792562A Withdrawn EP1446708A2 (en) | 2001-11-20 | 2002-11-19 | Method and device for regulation of electrical voltage |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050017696A1 (en) |
EP (1) | EP1446708A2 (en) |
AT (1) | AT501582B1 (en) |
AU (1) | AU2002358396A1 (en) |
CA (1) | CA2467886A1 (en) |
WO (1) | WO2003044611A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105659463A (en) * | 2013-09-03 | 2016-06-08 | 赖茵豪森机械制造公司 | Device and method for controlling the stability of a local network using an adjustable local network transformer |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4179539B2 (en) * | 2003-01-15 | 2008-11-12 | 富士通株式会社 | Compound semiconductor device and manufacturing method thereof |
DE102004046926B3 (en) * | 2004-09-28 | 2006-01-19 | Maschinenfabrik Reinhausen Gmbh | Device for regulating the electrical voltage |
DE102005017747A1 (en) * | 2005-04-12 | 2006-10-26 | Siemens Ag | Drive for a moving along a roadway vehicle, in particular a maglev train |
DE102009014243A1 (en) * | 2009-03-20 | 2010-09-23 | A. Eberle Gmbh & Co. Kg | Local power transformer or circuit for electrical distribution transformer for control or regulation of voltage range of every phase for low voltage level, is provided with distribution transformer with primary and secondary coiling |
IT1397121B1 (en) * | 2009-04-29 | 2012-12-28 | Pta Group S R L | SITTING DEVICE FOR A TROLLEY |
DE102012010115A1 (en) | 2012-05-23 | 2013-11-28 | A. Eberle Gmbh & Co. Kg | Circuitry for regulating and/or controlling alternating current (AC) voltage in AC power supply networks, has switching elements that are provided to connect secondary side of control transformer to primary side of control transformer |
DE102013211653A1 (en) * | 2013-06-20 | 2014-12-24 | Siemens Aktiengesellschaft | Adjustable local power transformer |
CN104777379A (en) * | 2015-03-31 | 2015-07-15 | 华北电力大学 | Dynamic characteristic test system for single-phase controllable shunt reactor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2109719A1 (en) * | 1971-03-02 | 1972-09-07 | Rohde & Schwarz | Power supply |
DE2446985A1 (en) * | 1974-10-02 | 1976-04-15 | Giesenhagen Kg | Stabilisation of AC voltages by in-phase corerection - cut-in of AC voltage to AC input dependent on actual value of output |
AT365393B (en) * | 1978-06-01 | 1982-01-11 | Elin Union Ag | CONTROL DEVICE FOR A SINGLE-PHASE CONTROL TRANSFORMER FOR THE POWER SUPPLY OF AN X-RAY TUBE |
GB2077964A (en) * | 1980-03-20 | 1981-12-23 | Bowler Peter Ltd | Voltage regulation |
EP0236300A1 (en) * | 1985-09-06 | 1987-09-16 | Quietlite International, Inc. | Solid state inverter including a multiple core transformer |
DE4410902A1 (en) * | 1994-03-29 | 1994-10-13 | Wolf Gmbh Richard | Power supply unit |
JPH08124768A (en) * | 1994-10-27 | 1996-05-17 | Shiiku Densetsu:Kk | On-load tap changing type ac constant voltage device |
AT411938B (en) * | 1999-11-02 | 2004-07-26 | Hansjoerg Dipl Ing Dr Hauer | METHOD AND DEVICE FOR REGULATING THE ELECTRICAL VOLTAGE IN ELECTRICAL SUPPLY NETWORKS AND / OR CONSUMER SYSTEMS |
-
2001
- 2001-11-20 AT AT0182301A patent/AT501582B1/en not_active IP Right Cessation
-
2002
- 2002-11-19 EP EP02792562A patent/EP1446708A2/en not_active Withdrawn
- 2002-11-19 WO PCT/AT2002/000321 patent/WO2003044611A2/en not_active Application Discontinuation
- 2002-11-19 AU AU2002358396A patent/AU2002358396A1/en not_active Abandoned
- 2002-11-19 CA CA002467886A patent/CA2467886A1/en not_active Abandoned
-
2004
- 2004-05-19 US US10/848,352 patent/US20050017696A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO03044611A3 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105659463A (en) * | 2013-09-03 | 2016-06-08 | 赖茵豪森机械制造公司 | Device and method for controlling the stability of a local network using an adjustable local network transformer |
CN105659463B (en) * | 2013-09-03 | 2018-09-18 | 赖茵豪森机械制造公司 | Device and method for the stability for controlling local power grid using adjustable local power grid transformer |
Also Published As
Publication number | Publication date |
---|---|
US20050017696A1 (en) | 2005-01-27 |
AU2002358396A8 (en) | 2003-06-10 |
AU2002358396A1 (en) | 2003-06-10 |
AT501582B1 (en) | 2007-05-15 |
CA2467886A1 (en) | 2003-05-30 |
WO2003044611A2 (en) | 2003-05-30 |
WO2003044611A3 (en) | 2003-12-18 |
AT501582A1 (en) | 2006-09-15 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20040519 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
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AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VA TECH ELIN TRANSFORMATOREN GMBH & CO |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: VA TECH ELIN TRANSFORMATOREN GMBH & CO |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS TRANSFORMERS AUSTRIA GMBH & CO. KG |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SIEMENS TRANSFORMERS AUSTRIA GMBH & CO. KG |
|
17Q | First examination report despatched |
Effective date: 20081218 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20100601 |