CN101651030A - Autotransformer with low-voltage compensation - Google Patents
Autotransformer with low-voltage compensation Download PDFInfo
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- CN101651030A CN101651030A CN200910023541A CN200910023541A CN101651030A CN 101651030 A CN101651030 A CN 101651030A CN 200910023541 A CN200910023541 A CN 200910023541A CN 200910023541 A CN200910023541 A CN 200910023541A CN 101651030 A CN101651030 A CN 101651030A
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Abstract
The invention discloses an autotransformer with low-voltage compensation, comprising a main transformer, a voltage regulator and a compensating device, wherein the main transformer comprises a low voltage winding, a common winding and a series winding; the voltage regulator comprises a voltage regulating switch, a voltage regulating winding and a first exciting winding which carries out excitationfor the voltage regulating winding; the compensating device comprises a compensation winding and a second excitation winding which carries out excitation for the compensation winding; the beginning end of the low voltage winding is connected with the beginning end of the first exciting winding; and the tail end of the low voltage winding is connected with the compensation winding in series. The autotransformer is characterized in that the tail end of the first exciting winding is connected with the tail end of the compensation winding. By adopting the voltage regulating compensation connection method of the invention, the low-voltage compensation is complete compensation for the autotransformer of variable flux voltage regulation of a neutral point, so that low voltage fluctuation can bethoroughly solved when a transformer regulates the voltage.
Description
Technical field
The present invention relates to a kind of autotransformer of band low-voltage compensation of neutral point variable flux voltage regulation, non-excitation pressure adjustment and on-load voltage regulation all can be adopted.
Background technology
Autotransformer is the visual plant in the transmission system, and it adjusts the ability of voltage and the operation that quality directly has influence on the transmission system safety and steady, and the basic demand of transformer voltage adjustment is, impedance fluctuations is little, operate steadily, reliably, little to system interference.But for the autotransformer of the employing neutral point variable flux voltage regulation of pressing Fig. 1 wiring, when wherein being pressed in different tap, except middle piezoelectricity is pressed, electric current changing, the voltage of low pressure is also along with change; In addition, the impedance voltage of different taps also has bigger fluctuation.Like this, not only to transformer oneself requirement height, also be unfavorable for the safety and steady operation of system simultaneously.Therefore, need take measures to improve the fluctuation of transformer impedance and low voltage voltage, guarantee operation stability.Especially for the high-capacity, superhigh pressure, the extra-high voltage auto-transformer that adopt the neutral point variable flux voltage regulation, the low pressure winding voltage is pressed with middle piezoelectricity and is changed, and this problem of impedance fluctuations was more very important to the influence of transformer when middle piezoelectricity was pressed variation.A kind of existing solution is to adopt voltage regulator is set separately carries out pressure regulation, and the compensation winding is set low voltage voltage is given and compensation.
But this way can not thoroughly be dealt with problems, because of its compensation to low pressure is not full remuneration.The compensation way that adopts is seen Fig. 2 at present, wiring is the terminal and compensation windings in series of low pressure winding, the top of excitation winding I links to each other with low pressure winding top, end links to each other with the low pressure winding is terminal, this compensation way is a undercompensation, still can there be certain variation in low voltage voltage, and its compensator transformer iron core is to become magnetic flux.
Summary of the invention
The present invention thoroughly solves the autotransformer of employing neutral point variable flux voltage regulation in the medium voltage side pressure regulation, the fluctuation of low-pressure side voltage and the problem of impedance fluctuations, guarantee that transformer is reliable, stable operation, the variable flux voltage regulation autotransformer that a kind of low-voltage compensation mode is provided is full remuneration.
For reaching above purpose, the present invention takes following technical scheme to be achieved:
A kind of autotransformer with low-voltage compensation comprises main transformer, voltage regulator and compensation arrangement, and main transformer comprises low pressure winding, common winding and series connection winding; Voltage regulator comprises tap changer, pressure regulation winding and is first excitation winding of pressure regulation winding excitation; Compensation arrangement comprises the compensation winding and is second excitation winding of compensation winding excitation; Described low pressure winding top links to each other with the top of first excitation winding, and the terminal and compensation windings in series of low pressure winding is characterized in that the end of described first excitation winding links to each other with the end of compensation winding.
In the such scheme, described main transformer, voltage regulator and compensation arrangement all are provided with the device body separately, are respectively main transformer body, voltage regulator device body and compensation arrangement device body.In main transformer body, be provided with power transformer core, this iron core principal post is arranged in order low pressure winding, common winding, series connection winding from the inside to the outside.In voltage regulator device body, be provided with the voltage regulator iron core, this iron core principal post is arranged in order first excitation winding, pressure regulation winding from the inside to the outside.In compensation arrangement device body, be provided with the compensation arrangement iron core, this iron core principal post is arranged in order second excitation winding, compensation winding from the inside to the outside.Described compensation arrangement iron core is permanent magnetic flux iron core.
Adopt the regulating compensation mode of connection of the present invention,,, can thoroughly solve the voltage fluctuation of low voltage voltage when the transformer pressure regulation so be full remuneration to low-voltage compensation because first excitation winding is the gamut excitation.
For the superhigh pressure of high-capacity, the autotransformer of ultra high voltage neutral point variable flux voltage regulation, also voltage regulator device body, compensation arrangement device body and tap changer can be provided with a fuel tank separately, make the structure of main transformer simple relatively, more safe and reliable like this.
Description of drawings:
Fig. 1 is existing not with the neutral point variable flux voltage regulation autotransformer connection schematic diagram of low-voltage compensation.
Fig. 2 is the neutral point variable flux voltage regulation autotransformer connection figure of existing a kind of undercompensation.
Fig. 3 is the neutral point variable flux voltage regulation autotransformer connection figure of full remuneration of the present invention.
Among Fig. 1-Fig. 3: lift one's head in a-low pressure top; Pressure head among the Am-; The high pressure head of A-; X-low pressure end is lifted one's head; The X-neutral point is lifted one's head; 101, main transformer body; 102, compensation arrangement device body; 103, voltage regulator device body.
Fig. 4 is a main transformer body winding Pareto diagram among Fig. 3.
Fig. 5 is a voltage regulator device body winding Pareto diagram among Fig. 3.
Fig. 6 is a compensation arrangement device body winding Pareto diagram among Fig. 3.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
A kind of autotransformer with low-voltage compensation, the mode of connection comprise main transformer, voltage regulator and compensation arrangement as shown in Figure 3, and main transformer comprises low pressure winding, common winding and series connection winding; Voltage regulator comprises tap changer k, pressure regulation winding and is the excitation winding I of pressure regulation winding excitation; Compensation arrangement comprises the compensation winding and is the excitation winding II of compensation winding excitation; Low pressure winding top links to each other with the top of excitation winding I, lead to low pressure top and lift one's head a, the low pressure winding terminal with the compensation windings in series, the end of excitation winding I links to each other with the end of compensation winding, leads to the low pressure end and lifts one's head x; The common winding top of main transformer is connected pressure head Am in leading to the series connection winding is terminal; Among Fig. 3: main transformer series connection winding is half-phase parallel connection up and down, and two ends are end up and down, and head end is the middle part outlet, and the tap of the winding of promptly connecting leads to head end, meets high pressure head A.The terminal pressure regulation windings in series of main transformer common winding by tap changer k and voltage regulator, the top of compensation arrangement excitation winding II links to each other with the main transformer common winding is terminal, the end of excitation winding II and high pressure neutral point lead-in wire is connected, and leads to neutral point and lifts one's head X.
Embodiment 2
As shown in Figure 3, the main transformer among the embodiment 1, voltage regulator and compensation arrangement all are provided with the device body separately, are respectively main transformer body 101, voltage regulator device body 103 and compensation arrangement device body 102.In the main transformer body 101, low pressure winding, common winding and series connection winding are arranged and are seen Fig. 4; In the voltage regulator device body 103, excitation winding I and pressure regulation winding are arranged and are seen Fig. 5; In the compensation arrangement device body 102, excitation winding II and compensation winding are arranged and are seen Fig. 6.Wherein, the compensation winding is used to compensate low-pressure side voltage; Excitation winding II is used to compensation winding excitation; Excitation winding I is used to pressure regulation winding excitation.
Adopt the present invention can solve high-capacity, superhigh pressure, the extra-high voltage auto-transformer that adopts the neutral point variable flux voltage regulation fully, the low voltage voltage that produces when pressure regulation fluctuation and impedance fluctuations problem make transformer stable, safe and reliable.The compensation arrangement iron core can adopt permanent magnetic flux iron core simultaneously, can reduce the manufacturing cost of transformer.
Claims (6)
1, a kind of autotransformer with low-voltage compensation comprises main transformer, voltage regulator and compensation arrangement, and main transformer comprises low pressure winding, common winding and series connection winding; Voltage regulator comprises tap changer, pressure regulation winding and is first excitation winding of pressure regulation winding excitation; Compensation arrangement comprises the compensation winding and is second excitation winding of compensation winding excitation; Described low pressure winding top links to each other with the top of first excitation winding, and the terminal and compensation windings in series of low pressure winding is characterized in that the end of described first excitation winding links to each other with the end of compensation winding.
2, the autotransformer of band low-voltage compensation as claimed in claim 1 is characterized in that, described main transformer, voltage regulator and compensation arrangement all are provided with the device body separately, is respectively main transformer body, voltage regulator device body and compensation arrangement device body.
3, the autotransformer of band low-voltage compensation as claimed in claim 2 is characterized in that, in the described main transformer body, is provided with power transformer core, and this iron core principal post is arranged in order low pressure winding, common winding, series connection winding from the inside to the outside.
4, the autotransformer of band low-voltage compensation as claimed in claim 2 is characterized in that, in the described voltage regulator device body, is provided with the voltage regulator iron core, and this iron core principal post is arranged in order first excitation winding, pressure regulation winding from the inside to the outside.
5, the autotransformer of band low-voltage compensation as claimed in claim 2 is characterized in that, in the described compensation arrangement device body, is provided with the compensation arrangement iron core, and this iron core principal post is arranged in order second excitation winding, compensation winding from the inside to the outside.
6, the autotransformer of band low-voltage compensation as claimed in claim 5 is characterized in that, described compensation arrangement iron core is permanent magnetic flux iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910023541A CN101651030A (en) | 2009-08-07 | 2009-08-07 | Autotransformer with low-voltage compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910023541A CN101651030A (en) | 2009-08-07 | 2009-08-07 | Autotransformer with low-voltage compensation |
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| CN101651030A true CN101651030A (en) | 2010-02-17 |
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| CN200910023541A Pending CN101651030A (en) | 2009-08-07 | 2009-08-07 | Autotransformer with low-voltage compensation |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420043A (en) * | 2011-12-05 | 2012-04-18 | 保定天威集团有限公司 | Single-phase high-impedance auto-transformer |
| CN103050261A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High voltage regulating autotransformer |
| CN103065775A (en) * | 2012-12-24 | 2013-04-24 | 保定天威保变电气股份有限公司 | Self-balancing transformer of regulating coil on side column |
| 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 |
| CN103794344A (en) * | 2014-03-04 | 2014-05-14 | 国家电网公司 | Extra-high voltage autotransformer |
| CN104361984A (en) * | 2014-12-02 | 2015-02-18 | 山东电力设备有限公司 | Constant-magnetic-flux voltage regulating structure for ultrahigh-voltage self coupling electric transformer |
| CN104752043A (en) * | 2015-04-03 | 2015-07-01 | 正泰电气股份有限公司 | Voltage regulating method for three-phase loaded voltage-regulating self-coupling transformer |
| CN104953909A (en) * | 2014-03-28 | 2015-09-30 | 特变电工股份有限公司 | Medium voltage regulation method of power autotransformer and power autotransformer |
| CN105655110A (en) * | 2014-11-20 | 2016-06-08 | 特变电工沈阳变压器集团有限公司 | Autotransformer with single fuel tank and dual-body |
| CN105762815A (en) * | 2016-04-14 | 2016-07-13 | 国网辽宁省电力有限公司鞍山供电公司 | Serial-type stationary dynamic reactive booster |
| CN106409482A (en) * | 2015-07-31 | 2017-02-15 | 特变电工沈阳变压器集团有限公司 | Autotransformer and test connecting method thereof |
| CN106504864A (en) * | 2016-12-01 | 2017-03-15 | 保定天威保变电气股份有限公司 | A kind of single-phase high voltage variable flux voltage variation (VFVV) auto-transformer |
| CN106504865A (en) * | 2016-12-08 | 2017-03-15 | 常州太平洋电力设备(集团)有限公司 | Rolled iron core dry-type autotransformer |
| CN109727753A (en) * | 2017-10-27 | 2019-05-07 | 特变电工沈阳变压器集团有限公司 | A kind of extra-high voltage auto-transformer of pressure regulation excitation |
| CN110085405A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer built-in voltage compensator and voltage compensating method |
| CN111816426A (en) * | 2020-06-09 | 2020-10-23 | 山东电力设备有限公司 | Voltage compensation structure of variable magnetic flux voltage regulating autotransformer third winding and transformer |
-
2009
- 2009-08-07 CN CN200910023541A patent/CN101651030A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420043B (en) * | 2011-12-05 | 2013-05-22 | 保定天威集团有限公司 | Single-phase high-impedance auto-transformer |
| CN102420043A (en) * | 2011-12-05 | 2012-04-18 | 保定天威集团有限公司 | Single-phase high-impedance auto-transformer |
| CN103065775B (en) * | 2012-12-24 | 2015-09-16 | 保定天威保变电气股份有限公司 | Other post voltage regulation coil self-balancing type transformer |
| CN103065775A (en) * | 2012-12-24 | 2013-04-24 | 保定天威保变电气股份有限公司 | Self-balancing transformer of regulating coil on side column |
| CN103050261A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | High voltage regulating 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 |
| CN103794344A (en) * | 2014-03-04 | 2014-05-14 | 国家电网公司 | Extra-high voltage autotransformer |
| CN103794344B (en) * | 2014-03-04 | 2016-08-17 | 国家电网公司 | A kind of extra-high voltage auto-transformer |
| CN104953909A (en) * | 2014-03-28 | 2015-09-30 | 特变电工股份有限公司 | Medium voltage regulation method of power autotransformer and power autotransformer |
| CN104953909B (en) * | 2014-03-28 | 2018-10-12 | 特变电工股份有限公司 | The middle pressure pressure regulation method and power auto-transformer of power auto-transformer |
| CN105655110B (en) * | 2014-11-20 | 2017-12-19 | 特变电工沈阳变压器集团有限公司 | A kind of single oil box double body auto-transformer |
| CN105655110A (en) * | 2014-11-20 | 2016-06-08 | 特变电工沈阳变压器集团有限公司 | Autotransformer with single fuel tank and dual-body |
| CN104361984A (en) * | 2014-12-02 | 2015-02-18 | 山东电力设备有限公司 | Constant-magnetic-flux voltage regulating structure for ultrahigh-voltage self coupling electric transformer |
| CN104752043A (en) * | 2015-04-03 | 2015-07-01 | 正泰电气股份有限公司 | Voltage regulating method for three-phase loaded voltage-regulating self-coupling transformer |
| CN106409482B (en) * | 2015-07-31 | 2018-01-16 | 特变电工沈阳变压器集团有限公司 | A kind of auto-transformer and its experiment connection method |
| CN106409482A (en) * | 2015-07-31 | 2017-02-15 | 特变电工沈阳变压器集团有限公司 | Autotransformer and test connecting method thereof |
| CN105762815A (en) * | 2016-04-14 | 2016-07-13 | 国网辽宁省电力有限公司鞍山供电公司 | Serial-type stationary dynamic reactive booster |
| CN106504864A (en) * | 2016-12-01 | 2017-03-15 | 保定天威保变电气股份有限公司 | A kind of single-phase high voltage variable flux voltage variation (VFVV) auto-transformer |
| CN106504864B (en) * | 2016-12-01 | 2019-02-12 | 保定天威保变电气股份有限公司 | A kind of single-phase high voltage variable flux voltage variation (VFVV) auto-transformer |
| CN106504865A (en) * | 2016-12-08 | 2017-03-15 | 常州太平洋电力设备(集团)有限公司 | Rolled iron core dry-type autotransformer |
| CN106504865B (en) * | 2016-12-08 | 2018-03-27 | 常州太平洋电力设备(集团)有限公司 | Rolled iron core dry-type auto-transformer |
| CN109727753A (en) * | 2017-10-27 | 2019-05-07 | 特变电工沈阳变压器集团有限公司 | A kind of extra-high voltage auto-transformer of pressure regulation excitation |
| CN110085405A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer built-in voltage compensator and voltage compensating method |
| CN111816426A (en) * | 2020-06-09 | 2020-10-23 | 山东电力设备有限公司 | Voltage compensation structure of variable magnetic flux voltage regulating autotransformer third winding and transformer |
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Open date: 20100217 |