CN102360848A - Method for realizing high-insulation and large-current on-load voltage regulation, and regulating transformer - Google Patents
Method for realizing high-insulation and large-current on-load voltage regulation, and regulating transformer Download PDFInfo
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- CN102360848A CN102360848A CN2011101424040A CN201110142404A CN102360848A CN 102360848 A CN102360848 A CN 102360848A CN 2011101424040 A CN2011101424040 A CN 2011101424040A CN 201110142404 A CN201110142404 A CN 201110142404A CN 102360848 A CN102360848 A CN 102360848A
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Abstract
The invention discloses a regulating transformer. The regulating transformer comprises a main transformation transformer, a regulating transformer, and a low voltage coil which is arranged on the main transformation transformer, and a voltage regulating coil which is arranged between iron cores; a primary side coil and a voltage regulation coil of the regulating transformer are connected with each other in parallel; and a secondary side coil of the voltage regulating coil is connected with a low voltage coil in series. The invention also discloses a method for realizing high-insulation and large-current on-load voltage regulation and the method comprises the following steps of: placing an auxiliary regulating transformer in the main transformation transformer; and connecting the primary side coil of the regulating transformer and the voltage regulating coil in parallel, and connecting the secondary side coil of the voltage regulating coil and the low voltage coil in series. In the method for realizing high-insulation and large-current on-load voltage regulation, the main transformation transformer and the regulating transformer work together, the insulation levels of the voltage coil of a low voltage on-load voltage regulation power transformer are reduced, current passing through a switch is reduced, and tapping turns of voltage accuracy can be met easily.
Description
Technical field
The present invention relates to insulation of a kind of realization height and the big load tapchanging method of electric current, and a kind of height of can realizing insulate and the big load tapchanging voltage regulating transformer of electric current.
Background technology
In electric power system, we use boosts and step-down transformer is accomplished the transmission of electric energy between from the power plant to user.Because the input or the excision of user power utilization equipment usually can make line voltage fluctuate, this just exerts an influence to the power consumption equipment that is moving.The method that solves adopts voltage regulating transformer exactly, when fluctuation takes place in voltage with the gear of transformer do corresponding change with the voltage that guarantees secondary side stable, thereby eliminate the influence of voltage ripple of power network to the power consumption equipment that moving.The most effectively pressure regulation method is that pressure regulation is arranged on low-pressure side, realizes real constant flux voltage regulation, can not have a negative impact to transformer loss and noise.But when pressure regulation was arranged on low-pressure side, because the low-pressure side electric current is big, the electric current that passes through of the switch that makes also improved thereupon; In addition because the number of turn of low-pressure side is less relatively, the precision of voltage when satisfying pressure regulation, the design of voltage regulation coil is difficulty relatively; Have again and be exactly when the self coupling power transformer is placed on medium voltage side with pressure regulation; Because the characteristics of autotransformer; The head end of pressing during voltage regulation coil can only be placed on when adopting constant flux voltage regulation; Thereby cause the insulation level in pressure regulation district too high, when selector switch, run into the problem that the switch insulation level is had relatively high expectations.Sometimes the factor of comprehensive above several respects can't be designed satisfactory transformer for the operation of power networks needs at all.To sum up: complex process when adopting the transformer of conventional art to realize the direct pressure regulation of low pressure, cost increases and design limitations is big.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that is directed against above-mentioned prior art, and insulation of a kind of realization height and the big load tapchanging method of electric current are provided, and a kind of height of can realizing insulate and the big load tapchanging voltage regulating transformer of electric current.
For solving the problems of the technologies described above; The technical scheme that the present invention takes is: a kind of voltage regulating transformer; Comprise main transformer transformer and voltage regulating transformer; It is characterized in that: also comprise the low-voltage coil that is arranged on the main transformer transformer and the voltage regulation coil between the iron core, the first siding ring and the voltage regulation coil of voltage regulating transformer are in parallel, and the second siding ring of voltage regulation coil is connected with low-voltage coil.
Voltage regulating transformer of the present invention adopts main transformer and voltage regulating transformer co-operation, reduce low-voltage loaded pressure regulation power transformer voltage regulation coil insulation level, reduce electric current through switch and reach the tap number of turn that satisfies voltage accuracy is set with comparalive ease.
As the further improved technical scheme of the present invention, the first siding ring and the voltage regulation coil of voltage regulating transformer are in parallel through on-load tap changer.
High insulation of a kind of realization and the big load tapchanging method of electric current:
At first, an auxiliary voltage regulating transformer is set in the main transformer transformer;
Secondly, the first siding ring and the voltage regulation coil of voltage regulating transformer is in parallel, the second siding ring of voltage regulation coil is connected with low-voltage coil.The high insulation of the present invention is adopted main transformer and voltage regulating transformer co-operation with the load tapchanging method of big electric current, reduce low-voltage loaded pressure regulation power transformer voltage regulation coil insulation level, reduce electric current through switch and reach the tap number of turn that satisfies voltage accuracy is set with comparalive ease.
As the further improved technical scheme of the present invention, the first siding ring and the voltage regulation coil of voltage regulating transformer are in parallel through on-load tap changer.
Operation principle of the present invention is: through between the low-voltage coil of main transformer and iron core, a voltage regulation coil being set, connect main transformer voltage regulation coil and voltage regulating transformer through on-load tap changer.The first siding ring of voltage regulating transformer is parallelly connected with the voltage regulation coil of main transformer transformer, the second siding ring of voltage regulating transformer and low pressure windings in series.Be enclosed within because of voltage regulation coil on the iron core of main transformer; Main flux can be on voltage regulation coil induced potential; This induced potential carries out excitation through parallel connection to voltage regulating transformer, and the second siding ring of voltage regulating transformer obtains voltage through electromagnetic induction, and this Voltage Series is on the low-voltage coil of main transformer; The voltage of the second siding ring of voltage regulating transformer changes through the change of exciting voltage, thereby plays the purpose that changes low voltage voltage.
Because the second siding ring of voltage regulating transformer is connected with the low-voltage coil of main transformer, be the electric current of the main transformer low-pressure side that is so it passes through; And the voltage regulation coil that is connected with shunting switch constitutes the loop owing to the first siding ring with voltage regulating transformer; What it passed through is the voltage regulating transformer primary side current, so select the no-load voltage ratio of voltage regulating transformer one or two sides can be arranged on the electric current through switch on the very little value suitably.
When autotransformer adopts low voltage regulation; Such as the high-pressure side is 220kV; Low-pressure side is 132 ± 16X0.625%kV, because what be connected with the higher 132kV of voltage insulation level is the second siding ring of voltage regulating transformer, so that the insulation level of second siding ring and the low pressure of main transformer are the insulation level of 132kV is identical; And its first siding ring directly is not connected with main transformer; So its insulation level and main transformer do not have causality, this moment, voltage regulating transformer played the effect of similar isolating transformer, and the insulation level of second siding ring can be arranged to very low level.Exactly be connected with the first siding ring of voltage regulating transformer for the voltage regulation coil that is connected with shunting switch, both bear identical insulation level, so the insulation level of shunting switch just can be arranged to lower value.The lead-in wire manufacture craft of transformer is simple thus, and insulating reliability is improved.
The present invention adopts main transformer and voltage regulating transformer co-operation, reduced low-voltage loaded pressure regulation power transformer voltage regulation coil insulation level, reduced electric current through switch, also more changing places is provided with the tap number of turn that satisfies voltage accuracy.
Description of drawings
Fig. 1 is an elementary diagram of the present invention.
Below in conjunction with accompanying drawing and embodiment patent of the present invention is described further.
Embodiment
Embodiment 1
Referring to Fig. 1; Voltage regulating transformer of the present invention; Comprise main transformer transformer 4 and voltage regulating transformer 1; Also comprise the low-voltage coil 6 that is arranged on main transformer transformer 4 and the voltage regulation coil 5 between the iron core, the first siding ring 2 and the voltage regulation coil 5 of voltage regulating transformer 1 are in parallel, and the second siding ring 3 of voltage regulation coil 5 is connected with low-voltage coil 6.The first siding ring 2 and the voltage regulation coil 5 of voltage regulating transformer 1 are in parallel through on-load tap changer 8.
Concrete annexation is: with the head end a3 of first siding ring 2 through switch movable contact and voltage regulation coil 5 connect, the terminal a4 and the switch polarity switch of first siding ring 2 connect the first siding ring 2 of realization voltage regulating transformer 11 and voltage regulation coil 5 coils from parallel connection of coils of main transformer transformer 4; Simultaneously the a2 end of the second siding ring 3 of voltage regulating transformer 1 connect with low-voltage coil 6 coils of main transformer transformer 4, it is free end that the a1 of second siding ring 3 holds.During transformer work, voltage regulating transformer 1 provides excitation by voltage regulation coil 5, changes the voltage of first siding ring 2 through the number of turn that changes voltage regulation coil 5, thereby makes preface second siding ring 3 voltages that corresponding the variation taken place, and has realized the variation of voltage between a-x.Second siding ring 3 is main transformer transformer 4 low-pressure side electric currents through electric current, and its insulation level is also identical with it.And first siding ring 2 coil currents that are connected with voltage regulation coil 5 and shunting switch can reduce through the no-load voltage ratio that voltage regulating transformer 1 suitably is set greatly, and its insulation level also reaches a lower level owing to the isolation of voltage regulating transformer 1 simultaneously; And, on the number of turn that voltage regulation coil 5 is set, strengthened flexibility through the no-load voltage ratio of voltage regulating transformer 1 suitably is set, solved well because the low problem of bringing that tap number of turn difficulty is set of low-voltage coil 6 voltages.In the present embodiment, adopt self coupling to become, i.e. terminal X of the high pressure of self coupling change and low pressure head end x link together.
Voltage regulating transformer of the present invention adopts main transformer and voltage regulating transformer co-operation, reduced low-voltage loaded pressure regulation power transformer voltage regulation coil insulation level, reduced electric current through switch and reach the tap number of turn that satisfies voltage accuracy is set with comparalive ease.
Embodiment 2
Referring to Fig. 1, the present invention realizes high insulation and the big load tapchanging method of electric current, may further comprise the steps: at first, an auxiliary voltage regulating transformer 1 is set in main transformer transformer 4; Secondly, the first siding ring 2 and the voltage regulation coil 5 of voltage regulating transformer 1 is in parallel, the second siding ring 3 of voltage regulation coil 5 is connected with low-voltage coil 6.In second step, the first siding ring 2 and the voltage regulation coil 5 of voltage regulating transformer 1 are in parallel through on-load tap changer 8.
Be specially: with the head end a3 of first siding ring 2 through switch movable contact and voltage regulation coil 5 connect, the terminal a4 and the switch polarity switch of first siding ring 2 connect the first siding ring 2 of realization voltage regulating transformer 11 and the pressure regulation of main transformer transformer 4
Coil 5 coils from parallel connection of coils; Simultaneously the a2 end of the second siding ring 3 of voltage regulating transformer 1 connect with low-voltage coil 6 coils of main transformer transformer 4, it is free end that the a1 of second siding ring 3 holds.During transformer work, voltage regulating transformer 1 provides excitation by voltage regulation coil 5, changes the voltage of first siding ring 2 through the number of turn that changes voltage regulation coil 5, thereby makes preface second siding ring 3 voltages that corresponding the variation taken place, and has realized the variation of voltage between a-x.Second siding ring 3 is main transformer transformer 4 low-pressure side electric currents through electric current, and its insulation level is also identical with it.And first siding ring 2 coil currents that are connected with voltage regulation coil 5 and shunting switch can reduce through the no-load voltage ratio that voltage regulating transformer 1 suitably is set greatly, and its insulation level also reaches a lower level owing to the isolation of voltage regulating transformer 1 simultaneously; And, on the number of turn that voltage regulation coil 5 is set, strengthened flexibility through the no-load voltage ratio of voltage regulating transformer 1 suitably is set, solved well because the low problem of bringing that tap number of turn difficulty is set of low-voltage coil 6 voltages.In the present embodiment, adopt self coupling to become, i.e. terminal X of the high pressure of self coupling change and low pressure head end x link together.
Claims (4)
1. voltage regulating transformer; Comprise main transformer transformer (4) and voltage regulating transformer (1); It is characterized in that: also comprise the low-voltage coil (6) that is arranged on main transformer transformer (4) and the voltage regulation coil (5) between the iron core; The first siding ring (2) of voltage regulating transformer (1) is in parallel with voltage regulation coil (5), and the second siding ring (3) of voltage regulation coil (5) is connected with low-voltage coil (6).
2. voltage regulating transformer according to claim 1 is characterized in that: the first siding ring (2) of voltage regulating transformer (1) is in parallel through on-load tap changer (8) with voltage regulation coil (5).
3. realize high insulation and the big load tapchanging method of electric current for one kind:
At first, an auxiliary voltage regulating transformer (1) is set in main transformer transformer (4);
Secondly, the first siding ring (2) and the voltage regulation coil (5) of voltage regulating transformer (1) is in parallel, the second siding ring of voltage regulation coil (5) is connected with low-voltage coil (6).
4. method according to claim 3 is characterized in that: the first siding ring (2) of voltage regulating transformer (1) is in parallel through on-load tap changer (8) with voltage regulation coil (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101424040A CN102360848A (en) | 2011-05-30 | 2011-05-30 | Method for realizing high-insulation and large-current on-load voltage regulation, and regulating transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101424040A CN102360848A (en) | 2011-05-30 | 2011-05-30 | Method for realizing high-insulation and large-current on-load voltage regulation, and regulating transformer |
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| CN102360848A true CN102360848A (en) | 2012-02-22 |
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| CN2011101424040A Pending CN102360848A (en) | 2011-05-30 | 2011-05-30 | Method for realizing high-insulation and large-current on-load voltage regulation, and regulating transformer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606445A (en) * | 2013-12-04 | 2014-02-26 | 正泰电气股份有限公司 | Method for effectively reducing current passing through on-load tap-changer of transformers |
| DE102014100949A1 (en) * | 2014-01-28 | 2015-07-30 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer according to the reactor switching principle |
| CN110164670A (en) * | 2019-06-21 | 2019-08-23 | 重庆望变电气（集团）股份有限公司 | A kind of change magnetic flux on-load voltage regulation auto-transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1988073A (en) * | 2006-11-21 | 2007-06-27 | 特变电工沈阳变压器集团有限公司技术中心 | Transformer with split box structure |
| CN200953280Y (en) * | 2006-08-29 | 2007-09-26 | 山东达驰电气股份有限公司 | Distributing loaded voltage regulating electric transformer |
| CN101404202A (en) * | 2008-06-24 | 2009-04-08 | 江苏华鹏变压器有限公司 | Low-pressure side on-load tap changer |
| CN201489964U (en) * | 2009-07-27 | 2010-05-26 | 宁波天安（集团）股份有限公司 | Large-capacity arc furnace transformer |
-
2011
- 2011-05-30 CN CN2011101424040A patent/CN102360848A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953280Y (en) * | 2006-08-29 | 2007-09-26 | 山东达驰电气股份有限公司 | Distributing loaded voltage regulating electric transformer |
| CN1988073A (en) * | 2006-11-21 | 2007-06-27 | 特变电工沈阳变压器集团有限公司技术中心 | Transformer with split box structure |
| CN101404202A (en) * | 2008-06-24 | 2009-04-08 | 江苏华鹏变压器有限公司 | Low-pressure side on-load tap changer |
| CN201489964U (en) * | 2009-07-27 | 2010-05-26 | 宁波天安（集团）股份有限公司 | Large-capacity arc furnace transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606445A (en) * | 2013-12-04 | 2014-02-26 | 正泰电气股份有限公司 | Method for effectively reducing current passing through on-load tap-changer of transformers |
| DE102014100949A1 (en) * | 2014-01-28 | 2015-07-30 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer according to the reactor switching principle |
| DE102014100949B4 (en) * | 2014-01-28 | 2016-12-29 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer according to the reactor switching principle |
| CN110164670A (en) * | 2019-06-21 | 2019-08-23 | 重庆望变电气（集团）股份有限公司 | A kind of change magnetic flux on-load voltage regulation auto-transformer |
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Application publication date: 20120222 |