CN102446622A - Loaded voltage-regulating electric transformer - Google Patents
Loaded voltage-regulating electric transformer Download PDFInfo
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- CN102446622A CN102446622A CN2011104118225A CN201110411822A CN102446622A CN 102446622 A CN102446622 A CN 102446622A CN 2011104118225 A CN2011104118225 A CN 2011104118225A CN 201110411822 A CN201110411822 A CN 201110411822A CN 102446622 A CN102446622 A CN 102446622A
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Abstract
The invention discloses a loaded voltage-regulating electric transformer, wherein each phase winding of the loaded voltage-regulating electric transformer is sequentially composed of a low-voltage winding, a high-voltage winding, a coarse regulating voltage-regulating winding and a multi-level fine regulating voltage-regulating winding from inside to outside; the low-voltage winding is led out axially; the high-voltage winding and the coarse regulating voltage-regulating winding are led out from two ends radially; a leading-out wire at one end of the high-voltage winding is respectively connected to outgoing lines A, B and C of a three-phase transformer; one end of the coarse regulating voltage-regulating winding is connected to the positive electrode end of a loaded tap switch; after the high-voltage winding is connected with the other end of the coarse regulating voltage-regulating winding, the high-voltage winding is connected to the negative electrode end of the loaded tap switch; and two ends of the multi-level fine regulating voltage-regulating winding and a contact of each coil are respectively connected to each tap contact of the loaded tap switch through a lead. According to the invention, at each position of the maximal tap, the rated tap and the minimum tap of the transformer, the load losses are basically equivalent, and the amount of external heat radiators of the transformer is reduced, thus not only is the cost of the transformer lowered, but also the power transformation efficiency of the transformer is improved.
Description
Technical field
The invention belongs to the transformer technology field, relate to a kind of on-load voltage regulation power transformer.
Background technology
Development along with State Grid's technology; The on-load voltage regulation power transformer can the bringing onto load pressure regulation with it; The advantage of operating that need not have a power failure when being pressure regulation progressively replaces the non-excitation pressure adjustment power transformer, and traditional on-load voltage regulation power transformer generally all adopts the load tapchanging mode of positive and negative accent, and the drawback of this voltage regulating mode is when transformer is in the minimum voltage tap position; Its electric current is the transformer maximum operating currenbt; This moment, the resistance loss of transformer comprised resistance loss two parts of transformer main coil and voltage regulation coil, thereby caused the more specified tap position of its load loss of transformer minimum voltage tap position to increase considerably, and had not only reduced the power transformation efficient of transformer; And must come transformer is dispelled the heat through the mode that increases gilled radiator, increase the power transformation cost of transformer.
Summary of the invention
The object of the invention is exactly to solve the problems referred to above that exist in the prior art; A kind of on-load voltage regulation power transformer is provided; Its load loss is suitable basically in each position of maximum tap, specified tap and minimum tap for this transformer, has reduced the load loss of transformer, has reduced the quantity of transformer external heat sink; Reduce the cost of transformer itself, improved the power transformation efficient of transformer.
For addressing the above problem, technical solution of the present invention is: a kind of on-load voltage regulation power transformer, its
Every phase winding is made up of low pressure winding, high pressure winding, coarse adjustment pressure regulation winding, multistage fine tuning pressure regulation winding from inside to outside successively; The low pressure winding adopts and axially draws; High pressure winding, coarse adjustment pressure regulation winding adopt that two ends are radial draws; It is last that one end lead-out wire of high pressure winding is connected to outlet A, B, the C of three-phase transformer; One end of coarse adjustment pressure regulation winding is connected on the positive terminal of on load tap changer; Be connected on the negative pole end of on load tap changer after the other end of high pressure winding and coarse adjustment pressure regulation winding is connected, the two ends of multistage fine tuning pressure regulation winding are connected on each tapping point of on load tap changer through lead-in wire respectively with the contact of each coil.
Press winding during above-mentioned described the present invention also comprises, it adopts and axially draws between low pressure winding and high pressure winding.
The present invention connects realization thickness key with high pressure winding, coarse adjustment pressure regulation winding, multistage fine tuning pressure regulation winding through on load tap changer and presses; Its load loss of each position in the maximum tap of transformer, specified tap and minimum tap is suitable basically; Reduced the load loss of transformer; Reduce the quantity of transformer external heat sink, thereby not only reduced the cost of transformer itself, and improved the power transformation efficient of transformer.
Description of drawings
Fig. 1 is the structural representation of the embodiment that is connected of mesolow winding of the present invention, high pressure winding, coarse adjustment pressure regulation winding and multistage fine tuning pressure regulation winding;
Fig. 2 is the structural representation of the embodiment that is connected of mesolow winding of the present invention, middle pressure winding, high pressure winding, coarse adjustment pressure regulation winding and multistage fine tuning pressure regulation winding;
Fig. 3 is the syndeton sketch map of mesohigh winding of the present invention, coarse adjustment pressure regulation winding and multistage fine tuning pressure regulation winding and on load tap changer;
Fig. 4 is the difference to the moving contact M present position of on load tap changer among Fig. 3, the detailed description of institute's output voltage.
Embodiment
Further specify of the present invention below in conjunction with accompanying drawing and specific embodiment.
As shown in figures 1 and 3, every phase winding of present embodiment is made up of low pressure winding 19, high pressure winding 21, coarse adjustment pressure regulation winding 22, multistage fine tuning pressure regulation winding 23 from inside to outside successively.Low pressure winding 19 adopts axially draws; The employing two ends are radial draws for high pressure winding 21, coarse adjustment pressure regulation winding 22; It is last that one end lead-out wire 25 of high pressure winding 21 is connected to outlet A, B, the C of three-phase transformer; One end of coarse adjustment pressure regulation winding 22 is connected on the positive terminal of on load tap changer 24; Be connected on the negative pole end of on load tap changer 24 after the other end of high pressure winding 21 and coarse adjustment pressure regulation winding 22 is connected, the two ends of multistage fine tuning pressure regulation winding 23 are connected on each tapping point of on load tap changer 24 through lead-in wire respectively with the contact of each coil 1,2,3,4,5,6,7,8,9, and M is the moving contact of on load tap changer 24.
As shown in Figures 2 and 3, every phase winding of present embodiment is made up of low pressure winding 19, middle pressure winding 20, high pressure winding 21, coarse adjustment pressure regulation winding 22, multistage fine tuning pressure regulation winding 23 from inside to outside successively.Low pressure winding 19, middle pressure winding 20 all adopt and axially draw; The employing two ends are radial draws for high pressure winding 21, coarse adjustment pressure regulation winding 22; It is last that one end lead-out wire 25 of high pressure winding 21 is connected to outlet A, B, the C of three-phase transformer; One end of coarse adjustment pressure regulation winding 22 is connected on the positive terminal of on load tap changer 24; Be connected on the negative pole end of on load tap changer 24 after the other end of high pressure winding 21 and coarse adjustment pressure regulation winding 22 is connected, the two ends of multistage fine tuning pressure regulation winding 23 are connected on each tapping point of on load tap changer 24 through lead-in wire respectively with the contact of each coil 1,2,3,4,5,6,7,8,9, and M is the moving contact of on load tap changer 24.
With high tension voltage is 110 ± 8 * 1.25% to be that example describes; The high pressure umber of turn is set to the corresponding number of turn of 90% voltage of transformer rated voltage; Coarse adjustment pressure regulation umber of turn is set to the corresponding number of turn of 10% voltage of transformer rated voltage; The total number of turns of fine tuning pressure regulation winding is set to the corresponding number of turn of 10% voltage of transformer rated voltage; Can find out the operating state of this transformer from Fig. 1, Fig. 2, Fig. 3 and Fig. 4; When tap position is positioned at "-" and M from 9 → 1 conversion, can realize eight grades of conversion of minimum tapping voltage 99kV → rated voltage 110kV, be equivalent to account for the transformer high-voltage winding of 90% rated voltage and the transformer fine tuning pressure regulation winding work that accounts for 10% rated voltage this moment; When tap position is positioned at "+" and M from 9 → 1 conversion, can realize eight grades of conversion of specified tapping voltage 110kV → maximum tapping voltage 121kV, be equivalent to account for the transformer high-voltage winding of 90% rated voltage and the transformer coarse adjustment pressure regulation winding and the work of fine tuning pressure regulation winding that account for 10% rated voltage respectively this moment; From Fig. 4, can find out simultaneously; The specified branch of transformer is connected to three positions; " 9a ", " 9b " position serve as reasons the transformer high-voltage winding that accounts for 90% rated voltage and the transformer coarse adjustment pressure regulation winding work that accounts for 10% rated voltage, " 9c " position serve as reasons transformer high-voltage winding that accounts for 90% rated voltage and the transformer fine tuning pressure regulation winding work that accounts for 10% rated voltage.
Can find out from the transformer working method of above enforcement; Press the mode difference to be with positive and negative key; Under transformer minus tapping state, transformer is by transformer high-voltage winding that accounts for 90% rated voltage and the transformer fine tuning pressure regulation winding work that accounts for 10% rated voltage, rather than the work of playing a reversed role of the transformer high-voltage winding of 100% rated voltage of positive and negative accent mode and the transformer fine tuning pressure regulation winding that accounts for 10% rated voltage; Promptly under minimum tap state; Adopting thickness to transfer mode Transformer Winding working method is the transformer high-voltage winding that accounts for 90% rated voltage, and the transformer high-voltage winding that positive and negative accent mode is 100% rated voltage is worked with the transformer fine tuning pressure regulation winding that accounts for 10% rated voltage simultaneously, promptly is equivalent to the corresponding number of turn of 110% rated voltage in operation; From this respect relatively; Thickness is transferred and is lacked 110%-90%=20% than positive and negative accent mode winding working turns, reduces 20% so its minimum tapping loss thickness is transferred simultaneously than positive and negative accent mode, thereby the thickness that makes transfers the transformer of mode to reduce the quantity of external heat sink; Not only reduce the cost of transformer itself, and improved the power transformation efficient of transformer.
Claims (2)
1. on-load voltage regulation power transformer, it is characterized in that: its every phase winding is made up of low pressure winding, high pressure winding, coarse adjustment pressure regulation winding, multistage fine tuning pressure regulation winding from inside to outside successively; The low pressure winding adopts and axially draws; High pressure winding, coarse adjustment pressure regulation winding adopt that two ends are radial draws; It is last that one end lead-out wire of high pressure winding is connected to outlet A, B, the C of three-phase transformer; One end of coarse adjustment pressure regulation winding is connected on the positive terminal of on load tap changer; Be connected on the negative pole end of on load tap changer after the other end of high pressure winding and coarse adjustment pressure regulation winding is connected, the two ends of multistage fine tuning pressure regulation winding are connected on each tapping point of on load tap changer through lead-in wire respectively with the contact of each coil.
2. on-load voltage regulation power transformer according to claim 1 is characterized in that: press winding during it also comprises, it adopts and axially draws between low pressure winding and high pressure winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104118225A CN102446622A (en) | 2011-12-12 | 2011-12-12 | Loaded voltage-regulating electric transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104118225A CN102446622A (en) | 2011-12-12 | 2011-12-12 | Loaded voltage-regulating electric transformer |
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| CN102446622A true CN102446622A (en) | 2012-05-09 |
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| CN2011104118225A Pending CN102446622A (en) | 2011-12-12 | 2011-12-12 | Loaded voltage-regulating electric transformer |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280299A (en) * | 2013-05-28 | 2013-09-04 | 特变电工沈阳变压器集团有限公司 | Transformer regulating winding arrangement structure and winding method |
| CN103500634A (en) * | 2013-10-28 | 2014-01-08 | 三变科技股份有限公司 | 220KV on-load voltage regulation single-phase testing transformer |
| CN103680876A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Dual-frequency universal power transformer |
| CN103730242A (en) * | 2013-12-25 | 2014-04-16 | 保定天威保变电气股份有限公司 | On-load voltage-regulating transformer voltage regulation structure provided with bias field winding |
| CN104752042A (en) * | 2013-12-26 | 2015-07-01 | 特变电工沈阳变压器集团有限公司 | Clearance iron core reactor with load switch or no-load switch and adjusting method thereof |
| CN107978439A (en) * | 2018-01-02 | 2018-05-01 | 北华大学 | A kind of winding and pin configuration that can increase ore heat furnace transformer and smelt scope |
| CN109074950A (en) * | 2016-04-25 | 2018-12-21 | 西门子股份公司 | With the high voltage electric equipment adjusted around group |
| CN109599257A (en) * | 2018-12-24 | 2019-04-09 | 上海良治电器技术有限公司 | Input adjustable transformer |
| CN111668003A (en) * | 2019-03-06 | 2020-09-15 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse and fine adjustment transformer |
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| JPH07297052A (en) * | 1994-04-21 | 1995-11-10 | Hitachi Ltd | Dual rated voltage transformer |
| CN201444439U (en) * | 2009-05-22 | 2010-04-28 | 山东达驰电气有限公司 | Transformer body structure |
| CN201601006U (en) * | 2010-02-09 | 2010-10-06 | 四川蜀能电器有限责任公司 | Voltage regulating coil structure of transformer fitted with on-load-tap-changer |
| CN201698881U (en) * | 2010-02-04 | 2011-01-05 | 中电电气(江苏)股份有限公司 | On-load voltage regulating structure of 110kV power transformer |
| CN201976061U (en) * | 2011-02-23 | 2011-09-14 | 中国西电电气股份有限公司 | Voltage regulating structure of converter transformer |
| CN202434321U (en) * | 2011-12-12 | 2012-09-12 | 保定天威集团有限公司 | On-load voltage regulating power transformer |
-
2011
- 2011-12-12 CN CN2011104118225A patent/CN102446622A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07297052A (en) * | 1994-04-21 | 1995-11-10 | Hitachi Ltd | Dual rated voltage transformer |
| CN201444439U (en) * | 2009-05-22 | 2010-04-28 | 山东达驰电气有限公司 | Transformer body structure |
| CN201698881U (en) * | 2010-02-04 | 2011-01-05 | 中电电气(江苏)股份有限公司 | On-load voltage regulating structure of 110kV power transformer |
| CN201601006U (en) * | 2010-02-09 | 2010-10-06 | 四川蜀能电器有限责任公司 | Voltage regulating coil structure of transformer fitted with on-load-tap-changer |
| CN201976061U (en) * | 2011-02-23 | 2011-09-14 | 中国西电电气股份有限公司 | Voltage regulating structure of converter transformer |
| CN202434321U (en) * | 2011-12-12 | 2012-09-12 | 保定天威集团有限公司 | On-load voltage regulating power transformer |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280299A (en) * | 2013-05-28 | 2013-09-04 | 特变电工沈阳变压器集团有限公司 | Transformer regulating winding arrangement structure and winding method |
| CN103500634A (en) * | 2013-10-28 | 2014-01-08 | 三变科技股份有限公司 | 220KV on-load voltage regulation single-phase testing transformer |
| CN103680876A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Dual-frequency universal power transformer |
| CN103680876B (en) * | 2013-12-13 | 2016-04-06 | 中国西电电气股份有限公司 | The power transformer that a kind of double frequency is general |
| CN103730242A (en) * | 2013-12-25 | 2014-04-16 | 保定天威保变电气股份有限公司 | On-load voltage-regulating transformer voltage regulation structure provided with bias field winding |
| CN104752042A (en) * | 2013-12-26 | 2015-07-01 | 特变电工沈阳变压器集团有限公司 | Clearance iron core reactor with load switch or no-load switch and adjusting method thereof |
| CN109074950A (en) * | 2016-04-25 | 2018-12-21 | 西门子股份公司 | With the high voltage electric equipment adjusted around group |
| CN109074950B (en) * | 2016-04-25 | 2021-10-15 | 西门子股份公司 | High-voltage electrical device with regulating winding group |
| CN107978439A (en) * | 2018-01-02 | 2018-05-01 | 北华大学 | A kind of winding and pin configuration that can increase ore heat furnace transformer and smelt scope |
| CN109599257A (en) * | 2018-12-24 | 2019-04-09 | 上海良治电器技术有限公司 | Input adjustable transformer |
| CN111668003A (en) * | 2019-03-06 | 2020-09-15 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse and fine adjustment transformer |
| CN111668003B (en) * | 2019-03-06 | 2023-08-25 | 特变电工沈阳变压器集团有限公司 | High-impedance coarse-fine regulating transformer |
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Application publication date: 20120509 |