CN101697310A - Winding connection structure for double-active-part on-load-tap-changing auto-transformer - Google Patents
Winding connection structure for double-active-part on-load-tap-changing auto-transformer Download PDFInfo
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- CN101697310A CN101697310A CN200910309224A CN200910309224A CN101697310A CN 101697310 A CN101697310 A CN 101697310A CN 200910309224 A CN200910309224 A CN 200910309224A CN 200910309224 A CN200910309224 A CN 200910309224A CN 101697310 A CN101697310 A CN 101697310A
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Abstract
The invention relates to a winding connection structure for a double-active-part on-load-tap-changing auto-transformer, and belongs to the technical field of transformer manufacture. The technical scheme is that: the winding connection structure comprises a series winding (HV), a public winding (LV2) and a switching winding (LV1), and can be connected with two voltage classes of grids in order to realize low voltage; the switching winding (LV1) is arranged between the series winding (HV) and the public winding (LV2); and a no-load switch controls the switching winding (LV1) to be connected in series with the series winding (HV) or the public winding (LV2), namely the number of turns of the public winding can be controlled to greatly change, so that the low voltage is greatly changed in the two voltage classes of grids. The invention provides the winding connection structure for the auto-transformer, the high voltage adopts off-circuit tap-changing, and the low voltage can be switched on the two voltage classes of grids and also can respectively perform on-load tap-changing under different voltages. The transformer adopting the structure can be used among three voltage classes of grids, but is only responsible for a high voltage grid therein to respectively perform power-flow contact between two low voltage grids. A brand-new double-active-part structural design is adopted so as to effectively solve the problem of overlarge voltage deviation caused by a set of shared regulating winding when the low voltage is connected to different voltage classes of grids.
Description
Affiliated technical field:
The present invention relates to a kind of winding connection structure of double-active-part on-load-tap-changing auto-transformer, belong to technical field of transformer manufacturing.
Background technology:
The autotransformer high pressure is a non-excitation pressure adjustment, low pressure can be switched on the electrical network of two kinds of electric pressures, and low pressure can also be carried out on-load voltage regulation respectively under different voltage, and at present the problem that exists is: low pressure under different voltage during a shared cover pressure regulation winding voltage deviation excessive.
Summary of the invention:
The object of the invention provides a kind of winding connection structure of double-active-part on-load-tap-changing auto-transformer, adopts two machine body structure designs, solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of winding connection structure of double-active-part on-load-tap-changing auto-transformer comprises series connection winding, common winding, switching winding, for realizing that low pressure can connect the electrical network of two kinds of electric pressures, between series connection winding and common winding, be provided with one and switch winding, controlling it with no load switch seals in the series connection winding or seals in common winding, promptly the number of turn by this control common winding can change significantly, changes significantly under the electrical network of two kinds of electric pressures to realize low pressure.
For make low pressure winding under two kinds of electric pressures can be shared a cover pressure regulation winding and a loaded switch, and guarantee that each tapping voltage error is as best one can little, adopt brand-new two device bodies, become the flux compensation pressure adjusting structure: be provided with two three-phase three-limb transformer bodies in the oil tank of transformer, one of them device is as permanent magnetic flux device body, and another is for becoming magnetic flux device body; Permanent magnetic flux device body puts in order to balance winding, common winding, pressure regulation winding, switches winding, series connection winding from core limb winding from inside to outside; It is compensation winding, field winding that change magnetic flux device body puts in order from core limb winding from inside to outside; Between these two device bodies be electrically connected for: the series connection winding connect with common winding and be the self coupling structure, selects the switching winding to seal in by no load switch and connects winding or seal in common winding, switch between the electrical network of different electric pressures with realization low pressure.
When low voltage voltage is low voltage, will compensate windings in series in pressure regulation winding end with no load switch control, field winding is connected in parallel on pressure regulation winding and the compensation winding.Like this, field winding is just given the compensation winding excitation be connected on pressure regulation winding end, make low pressure under low voltage during on-load voltage regulation voltage deviation as much as possible little.When low voltage voltage is high voltage, will compensate winding and field winding excises from circuit with no load switch control, make the pressure regulation winding directly string at the common winding end, with the on-load voltage regulation of realization low pressure.In addition, also be provided with the balance winding that a ground connects on one's body, so that circulation triple-frequency harmonics and zero sequence magnetic flux at permanent magnetic flux device.
Beneficial effect of the present invention: the invention provides a kind of high pressure is non-excitation pressure adjustment, and low pressure can be switched on the electrical network of two kinds of electric pressures, and low pressure can also be carried out the winding connection structure of load tapchanging autotransformer respectively under different voltage.Adopt the transformer of this structure to can be used between the electrical network of three kinds of different electric pressures, but the high-voltage fence of only being responsible for wherein come and go respectively to the trend between two kinds of low voltage electric networks.The present invention has adopted a kind of brand-new two machine body structures designs, and shared one overlaps the excessive problem of voltage deviation that the pressure regulation winding causes when having solved the electrical network of the different electric pressures of low crimping effectively.
Description of drawings:
Accompanying drawing 1 is a winding connection schematic diagram of the present invention.
Accompanying drawing 2 is balance winding connection figure.
Among the figure: series connection winding HV, common winding LV2, switching winding L V1, pressure regulation winding TV, field winding EV, compensation winding L V3, balance winding PV.
Embodiment:
Below in conjunction with accompanying drawing, the invention will be further described by embodiment.
In an embodiment, a kind of winding connection structure of double-active-part on-load-tap-changing auto-transformer comprises series connection winding HV, common winding LV2, switches winding L V1, for realizing that low pressure can connect the electrical network of two kinds of electric pressures, between series connection winding HV and common winding LV2, be provided with one and switch winding L V1, controlling it with no load switch seals in the series connection winding or seals in common winding, promptly the number of turn by this control common winding can change significantly, changes significantly under the electrical network of two kinds of electric pressures to realize low pressure.
For make low pressure winding under two kinds of electric pressures can be shared a cover pressure regulation winding and a loaded switch, and guarantee that each tapping voltage error is as best one can little, adopt brand-new two device bodies, become the flux compensation pressure adjusting structure: be provided with two three-phase three-limb transformer bodies in the oil tank of transformer, one of them device is as permanent magnetic flux device body, and another is for becoming magnetic flux device body; Permanent magnetic flux device body puts in order to balance winding PV, common winding LV2, pressure regulation winding TV, switches winding L V1, series connection winding HV from core limb winding from inside to outside; It is compensation winding L V3, field winding EV that change magnetic flux device body puts in order from core limb winding from inside to outside; Between these two device bodies be electrically connected for: series connection winding HV connects with common winding LV2 and is the self coupling structure, select to switch winding L V1 by no load switch and seal in the series connection winding or seal in common winding, between the electrical network of different electric pressures, switch to realize low pressure.
When low voltage voltage is low voltage, will compensate winding L V3 with no load switch control and be series at pressure regulation winding TV end, field winding EV is connected in parallel on pressure regulation winding TV and the compensation winding L V3.Like this, field winding is just given the compensation winding excitation be connected on pressure regulation winding end, make low pressure under low voltage during on-load voltage regulation voltage deviation as much as possible little.When low voltage voltage is high voltage, will compensate winding L V3 and field winding EV excises from circuit with no load switch control, make the pressure regulation winding directly string at the common winding end, with the on-load voltage regulation of realization low pressure.In addition, also be provided with the balance winding PV that a ground connects on one's body, so that circulation triple-frequency harmonics and zero sequence magnetic flux at permanent magnetic flux device.
Claims (3)
1. the winding connection structure of a double-active-part on-load-tap-changing auto-transformer, it is characterized in that comprising series connection winding (HV), common winding (LV2), switch winding (LV1), for realizing that low pressure can connect the electrical network of two kinds of electric pressures, between series connection winding (HV) and common winding (LV2), be provided with one and switch winding (LV1), controlling it with no load switch seals in the series connection winding or seals in common winding, promptly the number of turn by this control common winding can change significantly, changes significantly under the electrical network of two kinds of electric pressures to realize low pressure.
2. according to the winding connection structure of the described double-active-part on-load-tap-changing auto-transformer of claim 1, it is characterized in that adopting two device bodies, become the flux compensation pressure adjusting structure: be provided with two three-phase three-limb transformer bodies in the oil tank of transformer, one of them device is as permanent magnetic flux device body, and another is for becoming magnetic flux device body; Permanent magnetic flux device body puts in order to balance winding (PV), common winding (LV2), pressure regulation winding (TV), switches winding (LV1), series connection winding (HV) from core limb winding from inside to outside; It is compensation winding (LV3), field winding (EV) that change magnetic flux device body puts in order from core limb winding from inside to outside; Between these two device bodies be electrically connected for: series connection winding (HV) is connected with common winding (LV2) and is the self coupling structure, select to switch winding (LV1) by no load switch and seal in the series connection winding or seal in common winding, between the electrical network of different electric pressures, switch to realize low pressure.
3. according to the winding connection structure of the described double-active-part on-load-tap-changing auto-transformer of claim 1, it is characterized in that also being provided with the balance winding (PV) that a ground connects on one's body, so that circulation triple-frequency harmonics and zero sequence magnetic flux at permanent magnetic flux device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910309224XA CN101697310B (en) | 2009-11-03 | 2009-11-03 | Winding connection structure for double-active-part on-load-tap-changing auto-transformer |
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| CN200910309224XA CN101697310B (en) | 2009-11-03 | 2009-11-03 | Winding connection structure for double-active-part on-load-tap-changing auto-transformer |
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| CN101697310A true CN101697310A (en) | 2010-04-21 |
| CN101697310B CN101697310B (en) | 2011-06-15 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958186A (en) * | 2010-08-26 | 2011-01-26 | 江苏上能变压器有限公司 | 220,000-volt power transformer for switching and regulating voltages of different voltage classes |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
| CN103680882A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Self-coupling power transformer in 330kV three-phase and three-winding neutral point on-load voltage regulation mode |
| CN103730240A (en) * | 2013-12-25 | 2014-04-16 | 保定天威保变电气股份有限公司 | Variable-flux voltage regulating auto transformer for maintaining constant low voltage |
| WO2018032893A1 (en) * | 2016-08-18 | 2018-02-22 | 中国电力科学研究院 | Arcless on-load automatic voltage-regulating distribution transformer device and voltage regulation method thereof |
| CN108806947A (en) * | 2018-05-29 | 2018-11-13 | 保定天威保变电气股份有限公司 | A kind of low pressure times step voltage transformer |
| CN110706909A (en) * | 2018-07-10 | 2020-01-17 | 特变电工沈阳变压器集团有限公司 | Autotransformer with novel voltage regulation mode and voltage regulation method thereof |
Families Citing this family (1)
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| CN103794344B (en) * | 2014-03-04 | 2016-08-17 | 国家电网公司 | A kind of extra-high voltage auto-transformer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201004369Y (en) * | 2006-12-31 | 2008-01-09 | 西安西电变压器有限责任公司 | Voltage adjusting transformer |
| CN101256891B (en) * | 2007-12-28 | 2010-06-02 | 保定天威集团有限公司 | Extra-high voltage single-phase autotransformer |
| CN101354957B (en) * | 2008-05-28 | 2011-03-09 | 保定天威集团有限公司 | Large-capacity double-body pressure-regulating phase-shifting transformer |
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2009
- 2009-11-03 CN CN200910309224XA patent/CN101697310B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958186A (en) * | 2010-08-26 | 2011-01-26 | 江苏上能变压器有限公司 | 220,000-volt power transformer for switching and regulating voltages of different voltage classes |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
| CN103680882A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Self-coupling power transformer in 330kV three-phase and three-winding neutral point on-load voltage regulation mode |
| CN103730240A (en) * | 2013-12-25 | 2014-04-16 | 保定天威保变电气股份有限公司 | Variable-flux voltage regulating auto transformer for maintaining constant low voltage |
| WO2018032893A1 (en) * | 2016-08-18 | 2018-02-22 | 中国电力科学研究院 | Arcless on-load automatic voltage-regulating distribution transformer device and voltage regulation method thereof |
| CN108806947A (en) * | 2018-05-29 | 2018-11-13 | 保定天威保变电气股份有限公司 | A kind of low pressure times step voltage transformer |
| CN110706909A (en) * | 2018-07-10 | 2020-01-17 | 特变电工沈阳变压器集团有限公司 | Autotransformer with novel voltage regulation mode and voltage regulation method thereof |
| CN110706909B (en) * | 2018-07-10 | 2022-07-22 | 特变电工沈阳变压器集团有限公司 | Autotransformer with novel voltage regulation mode and voltage regulation method thereof |
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| CN101697310B (en) | 2011-06-15 |
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Owner name: BAODING TIANWEI BAOBIAN ELECTRIC CO., LTD. Free format text: FORMER OWNER: BAODING TIANWEI GROUP CO., LTD. Effective date: 20131115 |
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Effective date of registration: 20131115 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: Baoding Tianwei Baobian Electric Co., Ltd. Address before: 071051, Hebei City, Baoding province ginkgo Road, No. 198 Jin Di garden complex Patentee before: Baoding Tianwei Group Co., Ltd. |