CN102185553A - Continuously controllable transformer - Google Patents
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- CN102185553A CN102185553A CN 201110089395 CN201110089395A CN102185553A CN 102185553 A CN102185553 A CN 102185553A CN 201110089395 CN201110089395 CN 201110089395 CN 201110089395 A CN201110089395 A CN 201110089395A CN 102185553 A CN102185553 A CN 102185553A
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Abstract
The invention discloses a continuously controllable transformer. A continuously controllable transformer core comprises five pillars arranged in a cross shape, wherein the five pillars comprise a central pillar and four side pillars, are parallel to one another and form a magnetic flux loop by crossed beams; the central pillar is provided with AC coils L1 and L2; the side pillar I is provided with the AC coil L3 and a DC coil L5; the side pillar II is provided with the AC coil L4 and the DC coil L6; the side pillar III is provided with the DC coil L7; the side pillar IV is provided with the DC coil L8; the like end of the coil L5 is connected with that of the coil L6; the like end of the DC coil L7 is connected with that of the DC coil L8; an AC control power supply I is connected to the input end of a first full-bridge rectifier circuit by a pair of thyristors which are inversely connected in parallel; the AC control power supply II is connected to the input end of a second full-bridge rectifier circuit by another pair of thyristors which are inversely connected in parallel; and the output of the second full-bridge rectifier circuit is connected with terminals III and IV.
Description
Technical field
The present invention relates to electric power system and send power transformation technical field and industrial electrical equipment field, particularly a kind of continuous controllable transformer.
Background technology
The no-load voltage ratio major part of power transformer is fixed, and power transformer is in case manufacturing is finished, and the power transformer primary winding number of turn and the secondary coil number of turn have just determined that the no-load voltage ratio of power transformer has just been determined.Electric power system wishes that the means of adjusting voltage are arranged.Can adjust voltage by adjusting reactive power, still, the control appliance complexity is used inconvenience, and adjustable range is less.Electroplating enterprise, steel mill and industrial electrical equipment field need in a big way and more powerful voltage and Current Regulation equipment.
It is the most direct to adjust power system voltage by transformer.But transformer is in operation and will changes the number of turn of coil, needs very high the having of technology content to carry a by-pass cock.Patent of invention number is: 2008100551634 " adopting the high-tension coil corner connection of reactance on load tap changer to get on-load tap-changing transformer " and patent of invention number are: 2008101381541 " multi-stage dry voltage regulating transformer " proposed two kinds of on-load tap-changing transformers.The various on-load tap-changing transformers that propose differ from one another, and still, these on-load tap-changing transformers all are to utilize the mechanical switch principle, the tap of switching transformer coil, and the number of turn that changes coil is come regulation voltage.This voltage regulating mode can not be regulated continuously to voltage, and reaction speed is slow.
Summary of the invention
Purpose of the present invention provides a kind of thyristor to control exactly for addressing the above problem, and adjustable range is bigger, and reaction speed is fast, and voltage is adjustable continuously, and internal reactance is less, and the variation of output voltage is subjected to the less continuous controllable transformer of the variable effect of load current.
For achieving the above object, the present invention adopts following technical scheme:
A kind of continuous controllable transformer, it comprises:
A continuous controllable transformer core, iron core comprise the pillar that 5 crosss are arranged, one of them newel, and four side columns are parallel to each other between 5 pillars; 5 pillars constitute flux circuit by cruciform member; Side column I, side column II, side column III, side column IV sectional area equate that side column I, side column II area sum equal the newel sectional area, and side column III, side column IV sectional area sum equal the newel sectional area; The center pillar is provided with AC coil L1, AC coil L2; Side column I is provided with AC coil L3, dc coil L5; Side column II is provided with coil and exchanges L4, dc coil L6; Side column III is provided with dc coil L7; Side column IV is provided with dc coil L8; Two terminals of AC coil L2 are continuous controllable transformer alternating lead-out terminal;
The end of the same name of dc coil L5 is connected with the end of the same name of dc coil L6, and the different name end of dc coil L5 and the different name end of dc coil L6 are respectively direct current input terminal I and direct current input terminal II; The end of the same name of dc coil L7 is connected with the end of the same name of dc coil L8, and the different name end of dc coil L7 and the different name end of dc coil L8 are respectively direct current input terminal III and direct current input terminal IV;
Ac control power supply I is connected to the first full bridge rectifier input through a pair of thyristor D5, the thyristor D6 of reverse parallel connection, this full bridge rectifier output connects direct current input terminal I and direct current input terminal II, and the formation closed-loop path, thyristor D5, thyristor D6 are connected with correspondent control circuits I; Ac control power supply II is connected to the second full bridge rectifier input through another of reverse parallel connection to thyristor D11, thyristor D12, this full bridge rectifier output connects direct current input terminal III and direct current input terminal IV, and the formation closed-loop path, thyristor D11, thyristor D12 are connected with correspondent control circuits II.
The end of the same name of described AC coil L1 is continuous controllable transformer input terminal I; The different name end of AC coil L1 is connected with the end of the same name of AC coil L3, and the different name end of AC coil L3 is connected with the end of the same name of AC coil L4, and the different name end of AC coil L4 is the continuous controllable transformer input terminal II of AC power.
The equal turn numbers of described AC coil L3 and AC coil L4, the equal turn numbers of dc coil L5 and dc coil L6; The equal turn numbers of dc coil L7 and dc coil L8; The number of turn of AC coil L1 should satisfy: when adding rated voltage at AC coil L two ends, the newel iron core is unsaturated.
The direct current flux that described dc coil L5 and dc coil L6 produce is the closed flux circuit circulation between side column I and side column II only, can not flow to the iron core of newel and other side columns; The direct current flux that dc coil L7 and dc coil L8 produce is the closed flux circuit circulation between side column III and side column IV only, can not flow to the iron core of newel and other side columns.
Two outputs of described control circuit I connect the thyristor D5 of reverse parallel connection and the trigger end of thyristor D6 respectively, the conducting amount of control circuit I continuous control thyristor D5 and thyristor D6, thereby the size of continuous control dc coil L5 and dc coil L6 direct current;
Two outputs of described control circuit II connect the thyristor D11 of reverse parallel connection and the trigger end of thyristor D12 respectively, the conducting amount of control circuit II continuous control thyristor D11 and thyristor D12, thereby the size of continuous control dc coil L7 and dc coil L8 direct current.
The output shunt capacitance C1 of described first full bridge rectifier and overvoltage crowbar I; Described second full bridge rectifier output shunt capacitance C2 and the overvoltage crowbar II.
The invention has the beneficial effects as follows: continuous controllable transformer output voltage adjustable range is bigger, and reaction speed is fast, and voltage is adjustable continuously.Continuous controllable transformer internal reactance is less, and the variation of output voltage is subjected to the variable effect of load current less.
Description of drawings
Fig. 1 represents a kind of topological structure and the connected mode of continuous controllable transformer;
Fig. 2 a is a kind of front view of main body iron core of continuous controllable transformer;
Fig. 2 b is a kind of end view of main body iron core of continuous controllable transformer;
Fig. 2 c is a kind of vertical view of main body iron core of continuous controllable transformer;
Fig. 3 a is the front view of the main body iron core of another kind of continuous controllable transformer;
Fig. 3 b is the end view of the main body iron core of another kind of continuous controllable transformer;
Fig. 3 c is the vertical view of the main body iron core of another kind of continuous controllable transformer;
Wherein, 1. continuous controllable transformer input terminal I; 2. continuous controllable transformer input terminal II; 3. continuous controllable transformer output terminal I; 4. continuous controllable transformer output terminal II; 5. direct current input terminal I 6. direct current input terminal II; 7. direct current input terminal III, 8. direct current input terminal IV, 9. continuous controllable transformer core; 10. overvoltage crowbar I; 11. ac control power supply I, 12. control circuit I, 13. overvoltage crowbar II; 14. ac control power supply II, 15. control circuit II.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing and embodiment.
Embodiment 1:
A kind of topological structure of continuous controllable transformer and connected mode are as shown in Figure 1.Fig. 2 a is the front view of the main body iron core of continuous controllable transformer; Fig. 2 b is the end view of the main body iron core of continuous controllable transformer; Fig. 2 c is the vertical view of the main body iron core of continuous controllable transformer.The continuous controllable transformer core has 5 pillars, a newel, and four side columns are parallel to each other between 5 pillars, are cross arrangement; 5 pillar two have cruciform member to constitute flux circuit, and the crossbeam of side column I, newel, side column II is on a bar straight line, and the crossbeam of side column III, newel, side column IV is on another straight line, and two straight lines are vertical mutually in the newel axle center; Side column I, side column II be respectively in the newel both sides, and with the newel bilateral symmetry; Side column III, side column IV be respectively in newel both sides in addition, and with the newel bilateral symmetry; Side column I, side column II, side column III, side column IV sectional area equate that side column I, side column II sectional area sum equal the newel sectional area, and side column III, side column IV sectional area sum equal newel sectional area (being that each side column area is the newel half of the area); The center pillar has AC coil L1, and AC coil L2, side column I have AC coil L3, dc coil L5, and side column II has coil to exchange L4, dc coil L6, and side column III has dc coil L7, and side column IV has dc coil L8; Two terminals of AC coil L2 are continuous controllable transformer output terminal I3 and continuous controllable transformer output terminal II4.
The end of the same name of described AC coil L1 is a continuous controllable transformer input terminal I1 of AC power; The different name end of AC coil L1 is connected with the end of the same name of AC coil L3, and the different name end of AC coil L3 is connected with the end of the same name of AC coil L4, and the different name end of AC coil L4 is another continuous controllable transformer input terminal II2 of AC power.The number of turn of AC coil L1 should satisfy: when adding rated voltage at AC coil L1 two ends, the newel iron core is unsaturated.
The end of the same name of dc coil L5 is connected with the end of the same name of dc coil L6, and the different name end of dc coil L5 and the different name end of dc coil L6 are respectively direct current input terminal I5 and direct current input terminal II6; The end of the same name of dc coil L7 is connected with the end of the same name of dc coil L8, and the different name end of dc coil L7 and the different name end of dc coil L8 are respectively direct current input terminal III7 and direct current input terminal IV8;
Ac control power supply I11 is connected to the first full bridge rectifier input through a pair of thyristor D5, the thyristor D6 of reverse parallel connection, this full bridge rectifier output connects direct current input terminal I5 and direct current input terminal II6, and the formation closed-loop path, thyristor D5, thyristor D6 also are connected with correspondent control circuits I12; Ac control power supply II14 is connected to the second full bridge rectifier input through another of reverse parallel connection to thyristor D11, D thyristor 12, this full bridge rectifier output connects direct current input terminal III7 and direct current input terminal IV, and the formation closed-loop path, thyristor D11, thyristor D12 also are connected with correspondent control circuits II15
Side column I and side column II are for the newel symmetry, so side column I equates the equal turn numbers of described AC coil L3 and AC coil L4, the equal turn numbers of dc coil L5 and dc coil L6 with the exchange flux of side column II; The exchange flux of two side columns is at the alternating voltage equal and opposite in direction of dc coil L5 and dc coil L6 generation, and direction is opposite.Alternating current impression electromotive force on the continuous controllable transformer dc coil can not exert an influence to dc coil L5 and dc coil L6 DC loop.When dc coil L5 and dc coil L6 inflow direct current, the direct current flux that described dc coil L5 and dc coil L6 produce is the closed flux circuit circulation between side column I and side column II only, can not flow in newel and other side columns.
Side column III and side column IV are for the newel symmetry, so side column III equates the equal turn numbers of dc coil L7 and dc coil L8 with the exchange flux of side column IV; The exchange flux of two side columns is at the alternating voltage equal and opposite in direction of dc coil L7 and dc coil L8 generation, and direction is opposite.Alternating current impression electromotive force on the continuous controllable transformer dc coil can not exert an influence to dc coil L7 and dc coil L8 DC loop.When dc coil L7 and dc coil L8 inflow direct current, the direct current flux that described dc coil L7 and dc coil L8 produce is the closed flux circuit circulation between side column III and side column IV only, can not flow to the iron core of newel and other side columns.
When continuous controllable transformer dc coil L5 and dc coil L6 electric current are zero, and dc coil L7 and dc coil L8 electric current maximum, when the side column III and the side column IV degree of depth are saturated, the alternating voltage U that the continuous controllable transformer is imported
NBe added on AC coil L1, AC coil L3, the AC coil L4.Exciting current i
μFlow through AC coil L1, AC coil L3 and AC coil L5.AC coil L1 flows back to from side column I and side column II respectively at the magnetic flux that newel produces, and can not flow into side column III and side column IV.The sectional area of each side column is half of newel, and is logical grade for coil turn, alternating voltage reduces half.The wired circle L2 of described continuous controllable transformer core center pillar, two terminals of AC coil L2 are continuous controllable transformer alternating lead-out terminal.Output voltage U=U of AC coil L2
N* N2/ (N1+N3)=nU
NThe minimum no-load voltage ratio n=N2/ (N1+N3) of continuous controllable transformer wherein.
If dc coil L5 and dc coil L6 direct current are enough big, the side column I and the side column II degree of depth are saturated; Dc coil L7 and dc coil L8 electric current are zero.The alternating voltage U of continuous controllable transformer input
NBe added on AC coil L1, AC coil L3, the AC coil L4 exciting current i
μFlow through AC coil L1, AC coil L3 and AC coil L4.Because the continuous controllable transformer side column I and the side column II degree of depth are saturated, AC coil L1 does not flow back to from side column I and side column II at the magnetic flux that newel produces, but flows into side column III and side column IV, returns from side column III and side column IV.Because the continuous controllable transformer side column I and the side column II degree of depth are saturated, the exchange flux of AC coil L3 and AC coil L4 is very little, and the alternating voltage of AC coil L3 and AC coil L4 is very little, the alternating voltage U of continuous controllable transformer input
NAlmost all be added on the AC coil L1.The wired circle L2 of described continuous controllable transformer core center pillar, two terminals of AC coil L2 are continuous controllable transformer alternating lead-out terminal.Output voltage U=U of AC coil L2
N* N2/N1=mU
N, the maximum no-load voltage ratio m=N2/N1 of continuous controllable transformer wherein.
When ac control power supply I11 is voltage source, ac control power supply I11 connects and is connected the input of the full bridge rectifier that is made of diode D1, diode D2, diode D3, diode D4 behind thyristor D5 and the thyristor D6 of a pair of reverse parallel connection, the output of full bridge rectifier connects direct current input terminal I5 and direct current input terminal II6, forms the closed-loop path; As shown in Figure 1.
When ac control power supply I11 is current source, the input that is connected the full bridge rectifier that constitutes by diode D1, diode D2, diode D3, diode D4 behind the thyristor D5 of ac control power supply I11 a pair of reverse parallel connection in parallel and the thyristor D6, the output of full bridge rectifier connects direct current input terminal I5 and direct current input terminal II6, forms the closed-loop path.
The output shunt capacitance C1 of described first full bridge rectifier and overvoltage crowbar I; Described second full bridge rectifier output shunt capacitance C2 and the overvoltage crowbar II.Can make direct current more steady, and absorb impulse disturbances voltage, the protection rectification circuit.
Control circuit I12, its two outputs connect the thyristor D5 of two reverse parallel connections, the trigger end of thyristor D6 respectively.Thyristor D5 and thyristor D6 two ends are power-frequency voltage; Control circuit I12 can be from 0 ° to 180 ° the conducting amount of scope continuous control two thyristors; The trigger angle of thyristor D5 and thyristor D6 hour, the conducting amount of thyristor D5 and thyristor D6 is big; When the trigger angle of thyristor D5 and thyristor D6 was big, the conducting amount of thyristor D5 and thyristor D6 was little.The conducting amount of control circuit I12 continuous control thyristor D5 and thyristor D6 can continuous control dc coil L5 and the size of dc coil L6 direct current.
In like manner, control circuit II14 can according to the identical mode of aforesaid way, by the conducting amount of control thyristor D11, thyristor D12, thus the size of continuous control dc coil L7 and dc coil L8 direct current.
Disconnected when triggering thyristor D5 and the thyristor D6 complete shut-down of control circuit I12, the direct current of dc coil L3 and dc coil L4 is zero; Dc coil L3 and dc coil L4 place iron core are unsaturated; When triggering thyristor D11 and the full conducting of thyristor D12 of control circuit II15, the direct current of dc coil L7 and dc coil L8 is maximum; The dc coil L7 and the dc coil L8 place iron core degree of depth are saturated; The output voltage of AC coil L2 is a continuous controllable transformer minimum value.
When control circuit I12 and control circuit II15 progressively changed the trigger angle of each thyristor, thyristor D5 and thyristor D6 progressively strengthened the conducting amount, and direct current strengthens gradually among dc coil L3 and the dc coil L4; Thyristor D11 and thyristor D12 progressively reduce the conducting amount, and direct current reduces gradually among dc coil L7 and the dc coil L8; The output voltage of AC coil L2 strengthens gradually.
When control circuit I12 triggering thyristor D5 and the full conducting of thyristor D6, dc coil L3 and dc coil L4 flow through the maximum direct current of design; The dc coil L3 and the dc coil L4 place iron core degree of depth are saturated; When triggering thyristor D11 and the thyristor D12 contract fully of control circuit II15, the direct current of dc coil L7 and dc coil L8 is zero; Dc coil L7 and dc coil L8 place iron core are unsaturated; The exchange flux that AC coil L1 produces flows to side column I and side column II seldom, all flows into side column III and side column IV.The output voltage of AC coil L2 is a continuous controllable transformer maximum.
The input port and the output port of continuous controllable transformer are exchanged, and also are operable.
AC coil L2 is divided into two equal coils is installed in respectively on side column I and the side column II, two coils can be connected, also can be in parallel; The continuous controllable transformer also is operable.
AC coil L2 is divided into two equal coils is installed in respectively on side column III and the side column IV, two coils can be connected, also can be in parallel; The continuous controllable transformer also is operable.
The manufacturing of continuous controllable transformer core for convenience, the continuous controllable transformer core also can adopt structure shown in Figure 3.
Embodiment 2:
In the present embodiment, there is the number of turn of AC coil L1 to equal the number of turn of AC coil L3.
When continuous controllable transformer dc coil L5 and dc coil L6 electric current are zero, and dc coil L7 is when also being zero with dc coil L8 electric current.The output voltage of AC coil L2 is zero.
When continuous controllable transformer dc coil L5 and dc coil L6 electric current are zero, and the increase of starting from scratch of dc coil L7 and dc coil L8 electric current.The output voltage of AC coil L2 increases to half of maximum output voltage from zero.
When continuous controllable transformer dc coil L5 and dc coil L6 electric current reduce to zero gradually from maximum, and simultaneously, the electric current of dc coil L5 and dc coil L6 is when zero increases to maximum gradually, and the output voltage of AC coil L2 increases to maximum output voltage gradually from half of maximum output voltage.
The continuous controllable transformer can be realized flexible clutch function, can realize the short circuit current limiter function.
The present invention can manufacture and design with prior art, can realize fully.Broad prospect of application is arranged.
Claims (6)
1. continuous controllable transformer is characterized in that it comprises:
A continuous controllable transformer core, iron core comprise the pillar that 5 crosss are arranged, one of them newel, and four side columns are parallel to each other between 5 pillars; 5 pillars constitute flux circuit by cruciform member; Side column I, side column II, side column III, side column IV sectional area equate that side column I, side column II area sum equal the newel sectional area, and side column III, side column IV sectional area sum equal the newel sectional area; The center pillar is provided with AC coil L1, AC coil L2; Side column I is provided with AC coil L3, dc coil L5; Side column II is provided with coil and exchanges L4, dc coil L6; Side column III is provided with dc coil L7; Side column IV is provided with dc coil L8; Two terminals of AC coil L2 are continuous controllable transformer alternating lead-out terminal;
The end of the same name of dc coil L5 is connected with the end of the same name of dc coil L6, and the different name end of dc coil L5 and the different name end of dc coil L6 are respectively direct current input terminal I and direct current input terminal II; The end of the same name of dc coil L7 is connected with the end of the same name of dc coil L8, and the different name end of dc coil L7 and the different name end of dc coil L8 are respectively direct current input terminal III and direct current input terminal IV;
Ac control power supply I is connected to the first full bridge rectifier input through a pair of thyristor D5, the thyristor D6 of reverse parallel connection, this full bridge rectifier output connects direct current input terminal I and direct current input terminal II, and the formation closed-loop path, thyristor D5, thyristor D6 are connected with correspondent control circuits I; Ac control power supply II is connected to the second full bridge rectifier input through another of reverse parallel connection to thyristor D11, thyristor D12, this full bridge rectifier output connects direct current input terminal III and direct current input terminal IV, and the formation closed-loop path, thyristor D11, thyristor D12 are connected with correspondent control circuits II.
2. continuous controllable transformer as claimed in claim 1 is characterized in that, the end of the same name of described AC coil L1 is continuous controllable transformer input terminal I; The different name end of AC coil L1 is connected with the end of the same name of AC coil L3, and the different name end of AC coil L3 is connected with the end of the same name of AC coil L4, and the different name end of AC coil L4 is the continuous controllable transformer input terminal II of AC power.
3. continuous controllable transformer as claimed in claim 1 is characterized in that, the equal turn numbers of described AC coil L3 and AC coil L4, the equal turn numbers of dc coil L5 and dc coil L6; The equal turn numbers of dc coil L7 and dc coil L8; The number of turn of AC coil L1 should satisfy: when adding rated voltage at AC coil L1 two ends, the newel iron core is unsaturated.
4. continuous controllable transformer as claimed in claim 1 is characterized in that, the direct current flux that described dc coil L5 and dc coil L6 produce is the closed flux circuit circulation between side column I and side column II only, can not flow to the iron core of newel and other side columns; The direct current flux that dc coil L7 and dc coil L8 produce is the closed flux circuit circulation between side column III and side column IV only, can not flow to the iron core of newel and other side columns.
5. continuous controllable transformer as claimed in claim 1, it is characterized in that, two outputs of described control circuit I connect the thyristor D5 of reverse parallel connection and the trigger end of thyristor D6 respectively, the conducting amount of control circuit I continuous control thyristor D5 and thyristor D6, thereby the size of continuous control dc coil L5 and dc coil L6 direct current;
Two outputs of described control circuit II connect the thyristor D11 of reverse parallel connection and the trigger end of thyristor D12 respectively, the conducting amount of control circuit II continuous control thyristor D11 and thyristor D12, thereby the size of continuous control dc coil L7 and dc coil L8 direct current.
6. continuous controllable transformer as claimed in claim 1 is characterized in that, the output shunt capacitance C1 of described first full bridge rectifier and overvoltage crowbar I; Described second full bridge rectifier output shunt capacitance C2 and the overvoltage crowbar II.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100893953A CN102185553B (en) | 2011-04-11 | 2011-04-11 | Continuously controllable transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100893953A CN102185553B (en) | 2011-04-11 | 2011-04-11 | Continuously controllable transformer |
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| CN102185553A true CN102185553A (en) | 2011-09-14 |
| CN102185553B CN102185553B (en) | 2012-11-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755945A (en) * | 2019-04-02 | 2019-05-14 | 郑州大学 | A kind of magnet controlled reactor based on pulse current control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030117251A1 (en) * | 2001-11-21 | 2003-06-26 | Magtech As. | Controllable transformer |
| CN1581676A (en) * | 2004-05-14 | 2005-02-16 | 郑州大学 | Controlled reactor |
| CN101354954A (en) * | 2008-05-28 | 2009-01-28 | 保定天威集团有限公司 | Load-ratio voltage transformer with angle-connecting high-voltage coil using reactance type on-load tap-changer |
| CN201444443U (en) * | 2009-01-16 | 2010-04-28 | 魏明 | Transformer capable of controlling part of voltage |
| EP2302648A1 (en) * | 2008-06-18 | 2011-03-30 | TBEA Shenyang Transformer Group Co., Ltd | Self power-acquiring quickly responsive controllable electric reactor |
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2011
- 2011-04-11 CN CN2011100893953A patent/CN102185553B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030117251A1 (en) * | 2001-11-21 | 2003-06-26 | Magtech As. | Controllable transformer |
| CN1581676A (en) * | 2004-05-14 | 2005-02-16 | 郑州大学 | Controlled reactor |
| CN101354954A (en) * | 2008-05-28 | 2009-01-28 | 保定天威集团有限公司 | Load-ratio voltage transformer with angle-connecting high-voltage coil using reactance type on-load tap-changer |
| EP2302648A1 (en) * | 2008-06-18 | 2011-03-30 | TBEA Shenyang Transformer Group Co., Ltd | Self power-acquiring quickly responsive controllable electric reactor |
| CN201444443U (en) * | 2009-01-16 | 2010-04-28 | 魏明 | Transformer capable of controlling part of voltage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755945A (en) * | 2019-04-02 | 2019-05-14 | 郑州大学 | A kind of magnet controlled reactor based on pulse current control |
| CN109755945B (en) * | 2019-04-02 | 2022-07-29 | 郑州大学 | Magnetically controlled reactor based on pulse current control |
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| CN102185553B (en) | 2012-11-21 |
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