EP1794661A1 - Device for regulating electrical voltage - Google Patents
Device for regulating electrical voltageInfo
- Publication number
- EP1794661A1 EP1794661A1 EP05775005A EP05775005A EP1794661A1 EP 1794661 A1 EP1794661 A1 EP 1794661A1 EP 05775005 A EP05775005 A EP 05775005A EP 05775005 A EP05775005 A EP 05775005A EP 1794661 A1 EP1794661 A1 EP 1794661A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- taps
- control
- tap
- switching element
- 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
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 device for controlling the electrical voltage in supply networks.
- suitable tap changer can in principle be divided into two types: those of the type of resistance high-speed switch, which are only briefly loaded ohmic Kochaitwiderperhaps to limit the current flowing in the switching circuit current and therefore a fast switching between the winding taps, as well as those of the type of reactor switch , in which inductive Studentsschaltimpedanzen are provided, whereby a slow and continuous switching is possible.
- Voltage Regulators are those forward type of automobile booster ®. These devices are substantially simpler and allow a ⁇ -uf journeyregelung in 4 increments of 2 VT.%, Or 1 1 / a%, that is, a total of + 10 or + 6%.
- the switch should be designed as a multi-stage cam switch, optionally also be formed from a chain of relays or shooters or eventually from a chain of electronic switches, in particular thyristor switch exist. The number of possible positions corresponds to the number of required switching elements of the switch.
- a disadvantage of this known prior art is that at least in the case of the full transformer a separate trunk and control winding must be present. In order to drive the leakage inductance of each stage so high that the step short-circuit current only reaches the level of the rated current, a short stray channel is required. This results in a separate, short control winding that increases the width and depth of the transformer. In many cases, this additional expenditure on transformer costs exceeds the benefit of the elimination of the overvoltage resistors. Furthermore, the control behavior is difficult; the known arrangement is particularly unsuitable for parallel circuits.
- the object of the invention is to provide a simple and cost-effective device for controlling the electrical voltage for distribution transformers and voltage regulators ("voltage regulators”) with as few switching elements.
- the device according to the invention is preferably provided for the regulation of distribution transformers with a small control range of, for example, +/- 5% in 2.5% steps, for a total of, for example, 5 steps.
- the device according to the invention is suitable both for oil and dry transformers. Their particular advantage is that only a minimal increase in the dimensions of the respective distribution transformer is required and high availability and reliability is given. This is due to the fact that the device according to the invention is designed as a switching device which dispenses with mechanically moved selectors or load selectors of an on-load tap-changer.
- the device according to the invention also has a low complexity, in particular only a few components as well as switching elements. For an embodiment explained below with five selectable voltage levels, for example, only four Switching elements required. These switching elements can be carried out particularly advantageous as each antiparallel thyristor pair or vacuum switch cell.
- Fig. 1 The schematic circuit arrangement of a first device according to the invention
- Fig. 2 is a table of the achievable voltage levels in this device as a function of the position of the individual switching elements
- Fig. 3 shows the respective positions of the individual switching elements at these voltage levels
- FIG 4 shows a further device according to the invention for voltage regulation on the load side of a voltage regulator ("voltage regulator")
- FIG. 6 shows a further device according to the invention with alternatively formed
- Switching elements Fig. 7 shows a further device according to the invention with an extended
- FIG. 1 schematically shows a first device according to the invention. It is shown a main winding 1 of a control transformer whose winding end 2 is guided to the center of a separate control winding 3 of the control transformer.
- the Regelwicklu ⁇ g 3 here has three separate taps AL..A3.
- the taps A1 and A3 are located respectively at the opposite ends of the control winding 3, the tap A2 exactly in the middle, at the point where the connection with the winding end 2 of the main winding 1 is made.
- the control winding 3 is dimensioned such that the effective winding length between the taps A1 and A2 as well as between the taps A2 and A3 here corresponds to 5% of the winding length of the main winding 1 here.
- other winding lengths are possible.
- Each of the taps A1 ... A3 is connected to the input of a switching element, here a vacuum switch V1 ... V3.
- the output of the third vacuum switch V3, which is connected to the tap A3 at the other end of the control winding 3, is electrically connected to the output of the first vacuum switch V1 connected.
- the center of the reactor winding 4 leads to the discharge.
- a tap 5 is provided on the reactor winding 4.
- the voltage in this example can thus be regulated in the range +/- 5% in 2.5% increments.
- FIG. 2 shows a table of the five different possible voltage levels as a function of the position of the respective vacuum switches VL..V4 for the example shown in FIG.
- c means the closed position ("closed")
- o stands for the open position of the respective switch.
- the control of the vacuum switch V1 ... V4 is simple way z. B. with cam switches possible because a very simple operating sequence, regardless of the switching direction "higher voltage” or “lower voltage” results by simply switching on or off.
- FIG. 3 shows the different positions of the vacuum switches V1... V4 of the circuit shown in FIG. 1 and explained above at the individual voltage stages, as shown in the table in FIG.
- FIG. 4 shows an arrangement according to the invention as part of a voltage regulator for regulation on the load side. It can be seen that the input voltage Us is applied to the main winding 1 whose end leads to the center tap of the control winding 3, which is the tap A2 shown. Again at the winding spacing of 5% of the main winding, the taps A1 and A3 are provided at the two ends of the control winding 3. The position and function of the vacuum switch V1 ... V4 have already been explained, as well as the reactor winding 4 shown. Still shown here are a current transformer 6 and a voltage converter 7 on the load side. This can be used to determine the actual values of current and voltage at the load in a known manner.
- FIG. 6 shows a further arrangement according to the invention, here with thyristor pairs Th1... Th4 connected in antiparallel as switching elements.
- the switching elements described are both, as explained above, realized by vacuum switch, but also by mechanical switches or just by thyristor.
- the embodiment shown here with thyristor switches has the advantage that the arrangement according to the invention as a whole results in a complete switch, without any mechanically moved actuating elements.
- ThL..Th4 the table shown in FIG. 2 can be implemented by a person skilled in the art, for example, without further ado in an electrical control logic.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Control Of Electrical Variables (AREA)
- Ac-Ac Conversion (AREA)
- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Power Conversion In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004046926A DE102004046926B3 (en) | 2004-09-28 | 2004-09-28 | Device for regulating the electrical voltage |
PCT/EP2005/007999 WO2006034744A1 (en) | 2004-09-28 | 2005-07-22 | Device for regulating electrical voltage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1794661A1 true EP1794661A1 (en) | 2007-06-13 |
EP1794661B1 EP1794661B1 (en) | 2009-10-07 |
Family
ID=35079368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05775005A Not-in-force EP1794661B1 (en) | 2004-09-28 | 2005-07-22 | Device for regulating electrical voltage |
Country Status (13)
Country | Link |
---|---|
US (1) | US7656138B2 (en) |
EP (1) | EP1794661B1 (en) |
JP (1) | JP4756046B2 (en) |
KR (1) | KR101134998B1 (en) |
CN (1) | CN100498633C (en) |
AT (1) | ATE445179T1 (en) |
BR (1) | BRPI0513137A (en) |
CA (1) | CA2581875C (en) |
DE (2) | DE102004046926B3 (en) |
ES (1) | ES2334689T3 (en) |
HK (1) | HK1103252A1 (en) |
RU (1) | RU2361263C2 (en) |
WO (1) | WO2006034744A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100857236B1 (en) | 2006-11-22 | 2008-09-05 | 한일월드(주) | Voltage regulator for 3-phase votage and control method thereof |
KR100908783B1 (en) * | 2007-07-25 | 2009-07-22 | 한국전력공사 | Switching device for transformer having an uninterruptible power function and method of voltage control using the same |
KR100938253B1 (en) * | 2007-11-05 | 2010-01-21 | 박해용 | Reactor Voltage Regulator |
DE102008064485A1 (en) * | 2008-12-22 | 2010-06-24 | Siemens Aktiengesellschaft | Tap changer for medium-low voltage transformers |
DE102009017196A1 (en) * | 2009-04-09 | 2010-10-14 | Maschinenfabrik Reinhausen Gmbh | Tap-changer with semiconductor switching elements |
DE102009017197A1 (en) * | 2009-04-09 | 2010-10-14 | Maschinenfabrik Reinhausen Gmbh | Tap-changer with semiconductor switching elements |
DE102010050882A1 (en) * | 2010-11-09 | 2012-05-10 | Maschinenfabrik Reinhausen Gmbh | step switch |
CN102075006A (en) * | 2011-01-19 | 2011-05-25 | 西安盟创电器有限公司 | Village supercharger |
US9898019B2 (en) * | 2012-12-27 | 2018-02-20 | Xiaoming Li | Thyristor assisted on-load tap changer and method thereof |
RU2549377C1 (en) * | 2014-01-14 | 2015-04-27 | Закрытое акционерное общество "ЧЕБОКСАРСКИЙ ЭЛЕКТРОМЕХАНИЧЕСКИЙ ЗАВОД" | Mains voltage control unit |
DE102014100949B4 (en) * | 2014-01-28 | 2016-12-29 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer according to the reactor switching principle |
DE102015102727A1 (en) * | 2015-02-25 | 2016-08-25 | Maschinenfabrik Reinhausen Gmbh | Method for changing the active number of turns of a control winding in an electrical system and electrical system with a control winding |
CN105448548B (en) * | 2015-12-21 | 2018-01-09 | 浙江宝威电气有限公司 | On-load tap-changer of transformer |
US10890932B2 (en) | 2018-08-20 | 2021-01-12 | Eaton Intelligent Power Limited | Electrical network configured to magnetically couple to a winding and to control magnetic saturation in a magnetic core |
US11735923B2 (en) | 2020-07-28 | 2023-08-22 | Eaton Intelligent Power Limited | Voltage regulation device that includes a converter for harmonic current compensation and reactive power management |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL278413A (en) * | 1961-05-15 | |||
US3621374A (en) * | 1970-04-16 | 1971-11-16 | Gen Electric | Voltage regulator with zero current static switching between taps for a regulator transformer |
US3732486A (en) * | 1971-12-29 | 1973-05-08 | Gen Electric | Electrical apparatus with thyristor circuit |
DE2847391A1 (en) * | 1978-11-02 | 1980-05-14 | Giesenhagen Kg | Contactless tap changer for distribution transformer - has unity ratio current transformer and having antiparallel thyristor pair connected across primary winding |
JPS6391719A (en) * | 1986-10-06 | 1988-04-22 | Hitachi Constr Mach Co Ltd | Three-phase tap switching type dc power unit |
JP2561729B2 (en) * | 1989-04-21 | 1996-12-11 | 日本電子株式会社 | Tap switching AC power stabilization device |
CN1178597A (en) * | 1995-02-02 | 1998-04-08 | 西格弗里德·普洛布斯特 | Device for voltage control |
US6137277A (en) * | 1999-10-29 | 2000-10-24 | Inverpower Controls Ltd. | Static voltage regulator |
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 |
DE29921958U1 (en) * | 1999-12-16 | 2001-04-26 | Aso Gmbh Antriebs Und Steuerun | Safety contact strip |
US6384588B1 (en) * | 2000-04-13 | 2002-05-07 | Daniel F. Mulhauser | Method and apparatus for asymmetrically inducing voltages in transformer secondary windings while avoiding saturation of the transformer core |
US6472851B2 (en) * | 2000-07-05 | 2002-10-29 | Robicon Corporation | Hybrid tap-changing transformer with full range of control and high resolution |
AT501582B1 (en) * | 2001-11-20 | 2007-05-15 | Va Tech Elin Transformatoren G | METHOD FOR CONTROLLING ELECTRICAL VOLTAGE IN ELECTRICAL SUPPLY NETWORKS AND DEVICE FOR CARRYING OUT SAID METHOD |
CN2556688Y (en) * | 2002-07-04 | 2003-06-18 | 武汉能发伟业节能科技有限公司 | Intelligent low voltage distribution power saver |
WO2004114726A1 (en) * | 2003-06-20 | 2004-12-29 | 748038 Ontario Inc. O/A Ecopower | Voltage control system |
-
2004
- 2004-09-28 DE DE102004046926A patent/DE102004046926B3/en not_active Expired - Fee Related
-
2005
- 2005-07-22 BR BRPI0513137-5A patent/BRPI0513137A/en not_active Application Discontinuation
- 2005-07-22 US US11/664,364 patent/US7656138B2/en not_active Expired - Fee Related
- 2005-07-22 JP JP2007532788A patent/JP4756046B2/en not_active Expired - Fee Related
- 2005-07-22 CA CA2581875A patent/CA2581875C/en not_active Expired - Fee Related
- 2005-07-22 ES ES05775005T patent/ES2334689T3/en active Active
- 2005-07-22 EP EP05775005A patent/EP1794661B1/en not_active Not-in-force
- 2005-07-22 DE DE502005008291T patent/DE502005008291D1/de active Active
- 2005-07-22 AT AT05775005T patent/ATE445179T1/en not_active IP Right Cessation
- 2005-07-22 WO PCT/EP2005/007999 patent/WO2006034744A1/en active Application Filing
- 2005-07-22 RU RU2007116122/09A patent/RU2361263C2/en active
- 2005-07-22 KR KR1020077001996A patent/KR101134998B1/en active IP Right Grant
- 2005-07-22 CN CNB2005800181970A patent/CN100498633C/en not_active Expired - Fee Related
-
2007
- 2007-07-17 HK HK07107661.6A patent/HK1103252A1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2006034744A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN100498633C (en) | 2009-06-10 |
KR20070057775A (en) | 2007-06-07 |
EP1794661B1 (en) | 2009-10-07 |
RU2007116122A (en) | 2008-11-20 |
JP2008515362A (en) | 2008-05-08 |
US7656138B2 (en) | 2010-02-02 |
JP4756046B2 (en) | 2011-08-24 |
CN1965276A (en) | 2007-05-16 |
RU2361263C2 (en) | 2009-07-10 |
BRPI0513137A (en) | 2008-04-29 |
HK1103252A1 (en) | 2007-12-14 |
WO2006034744A1 (en) | 2006-04-06 |
DE102004046926B3 (en) | 2006-01-19 |
ATE445179T1 (en) | 2009-10-15 |
US20090140705A1 (en) | 2009-06-04 |
CA2581875A1 (en) | 2006-04-06 |
DE502005008291D1 (en) | 2009-11-19 |
ES2334689T3 (en) | 2010-03-15 |
KR101134998B1 (en) | 2012-04-09 |
CA2581875C (en) | 2013-07-02 |
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