WO2017186429A1 - Elektrisches hochspannungsgerät mit einer regelwicklungsgruppe - Google Patents
Elektrisches hochspannungsgerät mit einer regelwicklungsgruppe Download PDFInfo
- Publication number
- WO2017186429A1 WO2017186429A1 PCT/EP2017/057155 EP2017057155W WO2017186429A1 WO 2017186429 A1 WO2017186429 A1 WO 2017186429A1 EP 2017057155 W EP2017057155 W EP 2017057155W WO 2017186429 A1 WO2017186429 A1 WO 2017186429A1
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- WIPO (PCT)
- Prior art keywords
- winding
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- core
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- Prior art date
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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
Definitions
- the invention relates to an electrical device for connection to a high-voltage network with a housing which can be filled with a cooling liquid, a core in the housing angeord ⁇ Neten of a magnetizable material, a parent winding, which encloses a portion of the core, a Re ⁇ gelwicklungsen or prevented ⁇ light with control windings, each enclosing a section of the core, and a switch enabling a current flow through each control windings optional.
- Such an electrical device is known in practice.
- a reactor is used in electrical distribution networks, in order prepared, for example, capacitive reactive power to kompensie ⁇ ren.
- the choke off with a load tap changer can be connected with the turns of a regulating winding group of a main winding. So far, the maximum achievable reactive power setting for such a throttle, for example, was about 60% in a 420kV grid, based on their maximum operating performance. Due to the increasing fluctuation of the reactive power in the supply network, however, it is desirable to be able to control the reactive power in the network over a larger range.
- the object of the invention is therefore to provide an electrical device of the type mentioned, which increase a reactive power setting.
- the reactive power adjustment range based on the maximum power of the electric device at a voltage of 420 kV should be greater than 60% S ⁇ .
- the invention solves this problem in that the rule winding group has a first rule winding subgroup and a second rule winding subgroup, wherein the first Regelwicklungsunteren and the second Cannabiswicklungsunter ⁇ group are identical to each other.
- two control subgroups are provided for providing a larger adjustment range of the reactive power, which have a structure which is identical to one another. Doubling the control winding groups provides the additional turns necessary to increase the tuning range.
- the first control sub-group and the second control sub-group are arranged in the housing of the electrical device such that the predetermined boundary conditions are maintained in the space bounded by the housing.
- These predetermined boundary conditions include, for example, the maximum permissible leakage reactance limited by the switch between each coarse and fine stage pair of the switch, which may not be exceeded in order to enable safe operation of the electrical device.
- the leakage reactance can be determined by conventional means known to those skilled in the art. For example, two windings arranged side by side, the stray reactance ⁇ from measurements of the short-circuit impedance of both windings can be determined.
- the rule winding subgroups preferably each have at least one coarse and at least one fine stage.
- the switch is, for example, a commercially available on-load tap-changer.
- a coarse stage is a winding with more turns than a fine stage.
- the fine stage can be subdivided into several fine-stage subunits. Switching on a coarse level changes the reactive power in the grid more than switching on a fine stage.
- coarse, fine and coarse winding or fine winding are used synonymously here.
- the control winding subgroups are arranged in an inventive manner in the main winding in the housing of the electrical device common to all windings.
- the parent winding encloses a core section extending in the axial direction.
- the said core section is, for example, a leg of a core.
- the main winding comprises a first winding, which is set up for direct connection to the high-voltage network.
- the first winding is connected via a winding-free conductor section to a high-voltage connection of the electrical device.
- This high-voltage connection is, for example, an expedient feedthrough whose high-voltage conductor is connected at its winding end to the first turn.
- an outdoor connection is formed at the side facing away from the winding end of the high-voltage ⁇ implementation example.
- the respective trunk ⁇ winding is connected to a phase of a high voltage network.
- the first control winding sub-group and the second control winding sub-group in this embodiment of the invention He ⁇ in said axial direction one above the other arranged beab- standet and enclose a portion of the Kernab ⁇ section, the winding surrounds the stem.
- the control winding subgroups are each shorter in the axial direction and preferably each formed slightly less than half as long as the main winding. Therefore, the axially stacked übereinan- the control winding sub-groups include in total the same core section, so crizspielswei ⁇ se the same leg region as the main winding.
- the parent winding encloses a extending in the axial direction core portion, wherein the first turn is set up for direct connection to the high-voltage network.
- the first turn is connected to the high-voltage connection of the electrical device via an unwound winding-free conductor section.
- the first control winding sub-group and the second control winding sub-group in each case surround the same core section as the main winding, where ⁇ are also arranged for the main winding at the first control winding sub-group and the second control winding sub-group concentric with each other and so ⁇ with naturally.
- the control winding subgroups each have a coarse and a fine step
- the said sequence can also be coarse, fine, coarse, fine.
- the leakage reactances can be limited to a permissible level, so that it can lead to a fault-free operation of the electrical device and in particular of the switch.
- the main winding encloses a extending in the axial direction of the core portion, wherein a mean turn is set up for direct An ⁇ conclusion to the high-voltage network.
- a sol ⁇ che design is also referred to as the center port.
- the first control winding sub-group and the second control winding sub-group in each case enclose the same core section and are arranged in the radial direction demoei ⁇ Nander, being, however, each divided into two identi cal ⁇ winding sub-groups.
- the first rule subset and the second subset are subdivided concentrically to each other and to the parent lead.
- winding sub-groups which are also formed identical to one another and have a spacing in axia ⁇ ler direction to each other. Due to this arrangement, the winding beabstan- Deten subgroups define a connection gap, extends through which a ungewundener, so windungsokoer, conductor section, the average winding to the high voltage connection of the electrical appliance ver ⁇ binds. Also according to this embodiment, a trouble-free ⁇ it switching the control sub-groups by commercial switches, such as tap changer, allows. The center connection is advantageous for certain requirements. With regard to the arrangement of the coarse and fine stages, the statements made above apply here accordingly.
- each control winding subgroup has a coarse and a fine winding.
- the fine winding is subdivided into two fine sub-windings. According to this vorteilhaf ⁇ th development of the adjustment ranges can be selected more accurately and thus the reactive power advertising regulated in more detail in the connected to the electrical supply network equipment to.
- FIG. 1 shows a first exemplary embodiment of the electrical device according to the invention in a schematic side view
- 2 shows a further embodiment of the device according OF INVENTION ⁇ dung, in a schematic side view
- FIG. 3 shows another embodiment of the inventions ⁇ to the invention in a schematic
- Figures 4 and 5 respectively illustrate the position of a switch of an electrical device according to the figures 1 to 3 schematically.
- the reactor 1 shows a first embodiment of the Invention ⁇ proper electrical device 1 which is or in this case as a throttle is performed in other words, compensation choke.
- the reactor 1 has a housing 2, which consists of an electrically conductive metal and is at a ground potential.
- a throttle core 3 is angeord ⁇ net, of which in Figure 2, only a leg 4 is indicated as a core section schematically.
- the choke core 3 consists of flat, flat sheets, which consist of a magnetizable material. By using magnetizable sheets to construct the core eddy currents are known to be un ⁇ suppresses.
- the core 3 may have further corresponding set ⁇ built leg. 4
- the core may have return legs which are not surrounded by any winding.
- the throttle 1 may be single-phase or multi-phase.
- the leg 4 is surrounded in Figure 1 by a main winding 5, which is illustrated schematically in the cross-sectional view shown only on one side of the leg 4.
- a main winding 5 which is illustrated schematically in the cross-sectional view shown only on one side of the leg 4.
- the throttle 1 has a rule winding group 6, which consists of a first rule winding subgroup 7 and ei ⁇ ner second rule winding subgroup 8.
- the first Control subset 7 and the second are identical to each other.
- the housing 2 of the throttle 1 is filled with an insulating liquid, for example ⁇ an oil or ester, which in addition to the electrical insulation see also for cooling the active part 4, 5, 6 of the throttle 1 is used.
- Each rule winding subgroup 7 or 8 has a coarse winding and a fine winding as coarse or fine stage.
- the coarse and fine windings of the first control winding subgroup 7 are referenced with Gl or Fl.
- G ver ⁇ in this case has the coarse winding and F on the fine Wick ⁇ development.
- G2 refers to the large winding of the two ⁇ rule winding group and F2 on the fine winding. Coarse windings have significantly more windings than fine windings.
- the main winding 5 forms a first turn, which is connected to a high voltage terminal 11 via a winding-free line section 12. At its side remote from the high voltage terminal 1 side, the main winding 5 forms a star point terminal 13. The neutral point connection is connected to the ground potential in the example shown. Deviating from this, the terminal 13 with the other phases of the reactor 1 form a triangular circuit.
- the reactor 1 also has a stepped scarf ⁇ ter as a switch which is not shown in Figure 1 and which will be described later in connection with the explanation of Figures 4 and 5.
- FIG. With the help of the switch, it is possible to connect the main winding 5 with the windings of the first control winding subgroups 7 and / or 8 so that the reactive power can be controlled in stages in a connected to the high voltage terminal 11 ⁇ supply network.
- each control winding sub-group 7 or 8 is less than half as long as the strain is dimensioned ⁇ winding 5.
- the radial direction 15 5 faces the main winding the leg 4, wherein the coarse coils relate Gl G2 and the fine windings Fl and F2 follow.
- the coarse windings Gl and G2 surround the main winding 5.
- the fine windings Fl and F2 in turn enclose the coarse windings Gl and G2.
- FIG 2 shows another embodiment of the inventions ⁇ to the invention electrical device 1, which is again designed as a throttle 1 here.
- the throttle 1 shown in Figure 2 differs from the throttle according to Figure 1 only by the arrangement of the control winding subgroups 7 and 8.
- the control winding subgroups 7 and 8 are arranged concentrically or radially spaced from each other, in contrast to axial arrangement according to Figure 1.
- the control winding subgroup 7 surrounds the main winding 5 concentrically, which in turn is within the control winding subgroup 8, which surrounds the control winding subgroup 7 and the stem ⁇ winding 5 and the leg 4 of the core concentric.
- the first winding is connected to the main winding 5 connected to the high voltage terminal 11 directly, via a win ⁇ dung-free power section 12 is connected.
- the axial extension or length from ⁇ each control winding sub-group corresponds approximately to that of the main winding 5.
- the coarse coil Gl faces in the example shown as a coarse stage of the winding stem. 5
- the fine stage of the first rule winding subgroup 7 comprises two concentric fine windings F1, which in turn are facing a fine stage of the second rule winding subgroup having two fine windings F2.
- the coarse winding G2 is in the radial direction 15 outside.
- the tire hen anonym in the radial direction 15 from the inside to the outside can therefore be as coarse, fine, fine, fine, fine, coarse stage ⁇ be distinguished.
- FIG 3 shows another embodiment of the inventions ⁇ to the invention electrical device 1, which is again designed as a throttle.
- the throttle 1 shown here differs from the embodiment shown in FIG. borrowed by the configuration of the first rule winding subgroup 7 and the second control winding subgroup 8.
- the two control winding subgroups 7 and 8 are arranged concentrically to each other and the parent winding 5, which surrounds the leg 4 of the core 3 concentrically.
- each ⁇ but not the first winding of the main winding 5 is connected to the high voltage terminal.
- the conductor portion 12 extends through two mutually identical constructed winding sub-groups 16 and 17, which are arranged in the axial direction 14 at a distance from each other so that a connecting gap 18 is formed ⁇ .
- the conductor section 12 extends through the connection gap 18.
- the coarse windings G1 and G2 are arranged in the radial direction 15 on the inside or outside.
- the windings of the coil groups 16 and 17 of the first and second control winding sub-group 7 sheddingswei ⁇ se 8 are electrically connected to each other, but not with the conductor portion 12th
- FIG 4 shows a switching position of a tap changer 19 at a reactor 1 according to figure 1.
- the tap changer 19 has two preselector 20a and 20b for connecting or bridging a coarse winding Gl or G2 and a fine selector 21 for connecting or bridging each of a fine winding Fl and F2.
- Figure 5 shows a further variant for switching the Kompen ⁇ sationsdrosselspule according to Figure 1 which differs from that shown in Figure 4 embodiment in that two separate stages switches 19a and 19b for each phase of the throttle let 1 be used.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780025822.7A CN109074950B (zh) | 2016-04-25 | 2017-03-27 | 具有调节绕组群的高压电气设备 |
BR112018071777-0A BR112018071777B1 (pt) | 2016-04-25 | 2017-03-27 | Dispositivo elétrico para conexão a uma rede de alta tensão |
EP17715067.9A EP3420570B1 (de) | 2016-04-25 | 2017-03-27 | Elektrisches hochspannungsgerät mit einer regelwicklungsgruppe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016206947.0A DE102016206947A1 (de) | 2016-04-25 | 2016-04-25 | Elektrisches Hochspannungsgerät mit einer Regelwicklungsgruppe |
DE102016206947.0 | 2016-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017186429A1 true WO2017186429A1 (de) | 2017-11-02 |
Family
ID=58464513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/057155 WO2017186429A1 (de) | 2016-04-25 | 2017-03-27 | Elektrisches hochspannungsgerät mit einer regelwicklungsgruppe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3420570B1 (de) |
CN (1) | CN109074950B (de) |
BR (1) | BR112018071777B1 (de) |
DE (1) | DE102016206947A1 (de) |
WO (1) | WO2017186429A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2219734A1 (de) * | 1972-04-21 | 1973-10-31 | Inst Cercetare Si Proiectare T | Transformatoren fuer elektrisches lichtbogenschweissen |
DE2904470A1 (de) * | 1979-02-06 | 1980-08-07 | Transformatoren Union Ag | Einrichtung zur transformatorischen einstellung der spannung unter last |
DE202013007892U1 (de) * | 2012-09-07 | 2013-10-16 | "Federal Grid Company Of Unified Energy System" Joint Stock Company | Dreiphasen-Regeldrossel |
DE102014100949A1 (de) * | 2014-01-28 | 2015-07-30 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter nach dem Reaktorschaltprinzip |
WO2015193011A1 (de) * | 2014-08-22 | 2015-12-23 | Maschinenfabrik Reinhausen Gmbh | Schaltanordnung mit zwei laststufenschaltern, elektrische anlage mit einer derartigen schaltanordnung sowie deren verwendung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962092C (de) * | 1954-06-06 | 1957-04-18 | Siemens Ag | Wicklungsanordnung fuer Hochspannungsleistungs-Regeltransformatoren in Stern-Dreieck-Schaltung |
CN101552102A (zh) * | 2008-12-09 | 2009-10-07 | 中国西电电气股份有限公司 | 一种有载调压降压变压器的线圈结构 |
CN201392719Y (zh) * | 2009-04-20 | 2010-01-27 | 天威保变(合肥)变压器有限公司 | 一种新型三绕组电力变压器 |
CN202352498U (zh) * | 2011-11-25 | 2012-07-25 | 保定天威集团有限公司 | 一种高、中、低压均带分接的三绕组有载调压降压变压器 |
CN102446622A (zh) * | 2011-12-12 | 2012-05-09 | 保定天威集团有限公司 | 一种有载调压电力变压器 |
CN103515071B (zh) * | 2013-09-23 | 2015-09-02 | 保定保菱变压器有限公司 | 一种高压粗细调有载调压电力变压器 |
CN103680883A (zh) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | 一种500kV级***有载调压电力变压器 |
CN104752042A (zh) * | 2013-12-26 | 2015-07-01 | 特变电工沈阳变压器集团有限公司 | 带有载开关或无载开关的间隙式铁芯电抗器及其调节方法 |
CN103956256B (zh) * | 2014-04-30 | 2016-09-28 | 山东达驰电气有限公司 | 一种变压器绕组布置结构 |
-
2016
- 2016-04-25 DE DE102016206947.0A patent/DE102016206947A1/de not_active Ceased
-
2017
- 2017-03-27 EP EP17715067.9A patent/EP3420570B1/de active Active
- 2017-03-27 CN CN201780025822.7A patent/CN109074950B/zh active Active
- 2017-03-27 BR BR112018071777-0A patent/BR112018071777B1/pt active IP Right Grant
- 2017-03-27 WO PCT/EP2017/057155 patent/WO2017186429A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2219734A1 (de) * | 1972-04-21 | 1973-10-31 | Inst Cercetare Si Proiectare T | Transformatoren fuer elektrisches lichtbogenschweissen |
DE2904470A1 (de) * | 1979-02-06 | 1980-08-07 | Transformatoren Union Ag | Einrichtung zur transformatorischen einstellung der spannung unter last |
DE202013007892U1 (de) * | 2012-09-07 | 2013-10-16 | "Federal Grid Company Of Unified Energy System" Joint Stock Company | Dreiphasen-Regeldrossel |
DE102014100949A1 (de) * | 2014-01-28 | 2015-07-30 | Maschinenfabrik Reinhausen Gmbh | Laststufenschalter nach dem Reaktorschaltprinzip |
WO2015193011A1 (de) * | 2014-08-22 | 2015-12-23 | Maschinenfabrik Reinhausen Gmbh | Schaltanordnung mit zwei laststufenschaltern, elektrische anlage mit einer derartigen schaltanordnung sowie deren verwendung |
Also Published As
Publication number | Publication date |
---|---|
BR112018071777A2 (pt) | 2019-02-19 |
BR112018071777B1 (pt) | 2023-04-11 |
CN109074950B (zh) | 2021-10-15 |
DE102016206947A1 (de) | 2017-10-26 |
EP3420570B1 (de) | 2020-04-29 |
CN109074950A (zh) | 2018-12-21 |
EP3420570A1 (de) | 2019-01-02 |
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