CN103680883A - 500kV-level split on-load voltage regulation power transformer - Google Patents
500kV-level split on-load voltage regulation power transformer Download PDFInfo
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- CN103680883A CN103680883A CN201310725162.7A CN201310725162A CN103680883A CN 103680883 A CN103680883 A CN 103680883A CN 201310725162 A CN201310725162 A CN 201310725162A CN 103680883 A CN103680883 A CN 103680883A
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Abstract
The invention relates to a 500kV-level split on-load voltage regulation power transformer, and belongs to the technical field of manufacturing of transformers. According to the technical scheme, the 500kV-level split on-load voltage regulation power transformer comprises a three-phase and five-column iron core which is sleeved with a stabilizing winding (12), a low-voltage winding, a high-voltage winding (15) and a voltage adjusting winding sequentially in a concentric mode, an on-load tap-switch is arranged, the low-voltage winding is in an axial split mode and composed of a first low-voltage winding body (13) and a second low-voltage winding body (14), the voltage adjusting winding is composed of a first voltage adjusting winding body (16) and a second voltage adjusting winding body (17), and a coil of the voltage adjusting winding winds a hard paper tube. The 500kV-level split on-load voltage regulation power transformer is simple in structure and easy to implement, voltage of 500kV is directly transformed to needed voltage of 6.3kV in a first-level voltage reduction mode, and compared with the second-level voltage reduction mode, the first-level voltage reduction mode has the advantages that as one kind of transformer is omitted, the floor space is effectively reduced, relevant supporting facilities and protection facilities are saved, the total loss is reduced, installation and maintenance expenses are lowered correspondingly, and economical benefits are remarkable.
Description
Technical field
The present invention relates to a kind of 500kV level division loaded voltage-regulating electric transformer, belong to technical field of transformer manufacturing.
Background technology
After the low pressure winding division of transformer with split winding, high pressure winding can be improved effectively and low pressure winding respectively divides between part, and the short-circuit impedance value between the low pressure winding each several part after division, a transformer can be exported two-way power supply simultaneously, is two equipment power supplies simultaneously.For its plant standby power supply of big power station that is provided with 500kVJi transformer station in factory is normal, adopt the secondary step-down scheme that 500/110 kV level off circuit tap changing transfor mers and 110/6.3kV level on-load voltage regulation transformer with split winding are in series to solve, transformer is large in floor space, the relevant auxiliary facility of installation simultaneously, maintenance cost, transformer etc. also increases thereupon, and transformer holistic cost is increased.
Summary of the invention
The object of the invention is to provide a kind of 500kV level division loaded voltage-regulating electric transformer; simple in structure, easily realization; effectively reduced floor space; relevant auxiliary facility and protection equipment have been saved; when reducing total losses; installation, maintenance cost also reduce thereupon, solve the problem existing in background technology.
Technical scheme of the present invention is:
A 500kV level division loaded voltage-regulating electric transformer, comprises three-phase and five-pole iron core, and outer concentric locking collar successively unshakable in one's determination is equipped with stable winding, low pressure winding, high pressure winding and pressure regulation winding, and is provided with on-load shunting switch; Described low pressure winding adopts the mode of axial split, and low pressure winding is comprised of low pressure winding one and low pressure winding two, low pressure winding one is identical with electric parameter with physical dimension with low pressure winding two, be arranged in the upper and lower in same iron core column outside, the coiling on cardboard cylinder of low pressure winding coil, has improved the anti-short circuit capability of transformer effectively; The outlet of described stable winding is connected into open-delta in transformer, and adopts two sleeve pipes to draw, when transformer normally moves, and reliable ground after two casing short joints; Described high voltage winding component becomes upper and lower two parts, after upper and lower two-part lead-out wires of coil parallel connection, by the middle part of high pressure winding, is drawn; Described pressure regulation winding is comprised of pressure regulation winding one and pressure regulation winding two, the coiling on cardboard cylinder of pressure regulation winding coil.
The voltage ratio of described transformer is (525 ± 8X1.25)/6.3-6.3/6.3kV, and joint group is YNyn0-yn0+d; The on-load voltage regulation of transformer is completed by a three-phase integrated on load tap changer.
The described three-phase and five-pole structure that adopts unshakable in one's determination, core lamination adopts step-lap laminated structure.
The invention has the beneficial effects as follows: the present invention is simple in structure, easily realization; adopt one-level step-down mode that 500kV voltage is directly become to needed 6.3kV; compare with secondary step-down owing to having reduced a kind of transformer; not only effectively reduced floor space; and relevant auxiliary facility and protection equipment have been saved; when reducing total losses, installation, maintenance cost also reduce thereupon, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is winding connection principle schematic of the present invention;
In figure: unshakable in one's determination 11, stablize winding 12, low pressure winding 1, low pressure winding 2 14, high pressure winding 15, pressure regulation winding 1, pressure regulation winding 2 17.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
A 500kV level division loaded voltage-regulating electric transformer, comprises three-phase and five-pole iron core, and unshakable in one's determination 11 outer concentric locking collars are successively equipped with stablizes winding 12, low pressure winding, high pressure winding 15 and pressure regulation winding, and is provided with on-load shunting switch; Described low pressure winding adopts the mode of axial split, and low pressure winding is comprised of low pressure winding 1 and low pressure winding 2 14, low pressure winding one is identical with electric parameter with physical dimension with low pressure winding two, be arranged in the upper and lower in same iron core column outside, the coiling on cardboard cylinder of low pressure winding coil, has improved the anti-short circuit capability of transformer effectively; The outlet of described stable winding is connected into open-delta in transformer, and adopts two sleeve pipes to draw, when transformer normally moves, and reliable ground after two casing short joints; Described high voltage winding component becomes upper and lower two parts, after upper and lower two-part lead-out wires of coil parallel connection, by the middle part of high pressure winding, is drawn; Described pressure regulation winding is comprised of pressure regulation winding 1 and pressure regulation winding 2 17, the coiling on cardboard cylinder of pressure regulation winding coil.
The voltage ratio of described transformer is (525 ± 8X1.25)/6.3-6.3/6.3kV, and joint group is YNyn0-yn0+d; The on-load voltage regulation of transformer is completed by a three-phase integrated on load tap changer.
The described three-phase and five-pole structure that adopts unshakable in one's determination, core lamination adopts step-lap laminated structure.
Claims (3)
1. a 500kV level divides loaded voltage-regulating electric transformer, it is characterized in that: comprise three-phase and five-pole iron core, (11) unshakable in one's determination outer concentric locking collar is successively equipped with stable winding (12), low pressure winding, high pressure winding (15) and pressure regulation winding, and is provided with on-load shunting switch; Described low pressure winding adopts the mode of axial split, and low pressure winding is comprised of low pressure winding one (13) and low pressure winding two (14), low pressure winding one is identical with electric parameter with physical dimension with low pressure winding two, be arranged in the upper and lower in same iron core column outside, the coiling on cardboard cylinder of low pressure winding coil, effectively raises the anti-short circuit capability of transformer; The outlet of described stable winding is connected into open-delta in transformer, and adopts two sleeve pipes to draw, when transformer normally moves, and reliable ground after two casing short joints; Described high voltage winding component becomes upper and lower two parts, after upper and lower two-part lead-out wires of coil parallel connection, by the middle part of high pressure winding, is drawn; Described pressure regulation winding is comprised of pressure regulation winding one (16) and pressure regulation winding two (17), the coiling on cardboard cylinder of pressure regulation winding coil.
2. a kind of 500kV level division loaded voltage-regulating electric transformer according to claim 1, is characterized in that the voltage ratio of described transformer is (525 ± 8X1.25)/6.3-6.3/6.3kV, and joint group is YNyn0-yn0+d; The on-load voltage regulation of transformer is completed by a three-phase integrated on load tap changer.
3. a kind of 500kV level division loaded voltage-regulating electric transformer according to claim 1 and 2, is characterized in that the described three-phase and five-pole structure that adopts unshakable in one's determination, and core lamination adopts step-lap laminated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725162.7A CN103680883A (en) | 2013-12-25 | 2013-12-25 | 500kV-level split on-load voltage regulation power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725162.7A CN103680883A (en) | 2013-12-25 | 2013-12-25 | 500kV-level split on-load voltage regulation power transformer |
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| CN103680883A true CN103680883A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310725162.7A Pending CN103680883A (en) | 2013-12-25 | 2013-12-25 | 500kV-level split on-load voltage regulation power transformer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332289A (en) * | 2014-11-06 | 2015-02-04 | 大连信达变压器有限公司 | Winding arrangement structure for multiple operating ways of splitting of transformer and operating way |
| CN106816294A (en) * | 2015-11-30 | 2017-06-09 | 特变电工沈阳变压器集团有限公司 | A kind of pair of high pressure shares a Multifunction transformer for voltage regulation coil |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
| CN109074950A (en) * | 2016-04-25 | 2018-12-21 | 西门子股份公司 | With the high voltage electric equipment adjusted around group |
| CN111508688A (en) * | 2020-05-27 | 2020-08-07 | 卧龙电气银川变压器有限公司 | On-load low-voltage regulating transformer |
| CN112259327A (en) * | 2020-10-30 | 2021-01-22 | 常州东芝变压器有限公司 | 1000kV high-voltage winding split double-coil oil-immersed power transformer |
| CN113948282A (en) * | 2021-10-26 | 2022-01-18 | 保定保菱变压器有限公司 | 66kV voltage level three-winding high-capacity power transformer and assembly method |
| CN113948286A (en) * | 2021-10-26 | 2022-01-18 | 保定保菱变压器有限公司 | On-load voltage regulation power transformer for 66kV transformer substation and assembly method |
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| JPS56131916A (en) * | 1980-03-19 | 1981-10-15 | Toshiba Corp | Single-phase on-load tap-changing transformer |
| JPS59175111A (en) * | 1983-03-25 | 1984-10-03 | Hitachi Ltd | Three-phase on-load tap changing transformer |
| CN202332520U (en) * | 2011-11-25 | 2012-07-11 | 保定天威集团有限公司 | Shunt wire outgoing structure of transformer with radially split winding |
| CN202363228U (en) * | 2011-12-16 | 2012-08-01 | 天威保变(合肥)变压器有限公司 | 500kV-grade three-phase three-winding excitation-free pressure regulating high-impedance power transformer |
| CN202758722U (en) * | 2012-08-27 | 2013-02-27 | 合肥鑫伟电力设备有限公司 | Three-phase on load tap changing transformer |
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2013
- 2013-12-25 CN CN201310725162.7A patent/CN103680883A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131916A (en) * | 1980-03-19 | 1981-10-15 | Toshiba Corp | Single-phase on-load tap-changing transformer |
| JPS59175111A (en) * | 1983-03-25 | 1984-10-03 | Hitachi Ltd | Three-phase on-load tap changing transformer |
| CN202332520U (en) * | 2011-11-25 | 2012-07-11 | 保定天威集团有限公司 | Shunt wire outgoing structure of transformer with radially split winding |
| CN202363228U (en) * | 2011-12-16 | 2012-08-01 | 天威保变(合肥)变压器有限公司 | 500kV-grade three-phase three-winding excitation-free pressure regulating high-impedance power transformer |
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| 张中: "采用分裂式变压器作为风电场主变压器的可行性分析", 《变压器》 * |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332289A (en) * | 2014-11-06 | 2015-02-04 | 大连信达变压器有限公司 | Winding arrangement structure for multiple operating ways of splitting of transformer and operating way |
| CN106816294A (en) * | 2015-11-30 | 2017-06-09 | 特变电工沈阳变压器集团有限公司 | A kind of pair of high pressure shares a Multifunction transformer for voltage regulation coil |
| CN106816294B (en) * | 2015-11-30 | 2019-03-01 | 特变电工沈阳变压器集团有限公司 | A kind of double high pressures share the Multifunction transformer of a voltage regulation coil |
| 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 |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
| CN111508688A (en) * | 2020-05-27 | 2020-08-07 | 卧龙电气银川变压器有限公司 | On-load low-voltage regulating transformer |
| CN112259327A (en) * | 2020-10-30 | 2021-01-22 | 常州东芝变压器有限公司 | 1000kV high-voltage winding split double-coil oil-immersed power transformer |
| CN113948282A (en) * | 2021-10-26 | 2022-01-18 | 保定保菱变压器有限公司 | 66kV voltage level three-winding high-capacity power transformer and assembly method |
| CN113948286A (en) * | 2021-10-26 | 2022-01-18 | 保定保菱变压器有限公司 | On-load voltage regulation power transformer for 66kV transformer substation and assembly method |
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Application publication date: 20140326 |