CN2279028Y - Adjustable arc-extinction winding - Google Patents
Adjustable arc-extinction winding Download PDFInfo
- Publication number
- CN2279028Y CN2279028Y CN 96237927 CN96237927U CN2279028Y CN 2279028 Y CN2279028 Y CN 2279028Y CN 96237927 CN96237927 CN 96237927 CN 96237927 U CN96237927 U CN 96237927U CN 2279028 Y CN2279028 Y CN 2279028Y
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- winding
- arc
- extinction
- phase
- reactor
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Abstract
The utility model relates to an adjustable arc-extinction winding, which is composed of five-column iron cores and a corresponding winding. A three-column iron core in the middle and the winding are connected to be a three-phase Z-shaped grounding transformer, and two side columns, controlled silicon, and a diode can form an arc-extinction reactor which is controlled by a bias magnet. Electric current controlled by DC is provided by electric voltage on both ends of the arc-extinction reactor which is conducted with self-coupling voltage transformation and is rectified by the controlled silicon; a separate DC field power supply with large capacity is not needed; the voltage-ampere characteristics of the arc-extinction reactor can be ensured, and the adjustable arc-extinction winding has the advantages of favorable linearity and increased compensating accuracy and efficiency. The utility model has the advantages of compact structure, low cost, etc.
Description
The utility model belongs to technical field of electrical equipment, the adjustable arc suppression coil that particularly a kind of power network wiring is used.
Existing arc suppression coil mainly is divided three classes by the difference that changes the inductance value method: 1. (inductance can not be adjustable continuously) tap or the adjustable number of turn arc suppression coil is arranged; 2. the arc suppression coil of adjustable air gap (inductance is adjustable continuously); 3. D.C. magnetic biasing is transferred sense arc suppression coil (inductance is adjustable continuously).Above-mentioned first kind arc suppression coil owing to its inductance can not be regulated continuously, thereby is difficult to realize automatic accurate tracking building-out capacitor electric current.Second class is to change gas length by the moving iron core that move to insert coil inside to come the regulating winding inductance, and it is response speed slow (can to tens of seconds) not only, can be malfunctioning because of the dirty mechanical action that causes, and also noise is very big during work.The 3rd type games does not have mechanical parts, by Electronic Control, so the reliability height, response speed is fast, but existing product need add long-time magnet excitation power supply, thereby energy consumption is higher, and the output current wave distortion is bigger, humorous wave height, cause the residual flow after the compensation to increase, in addition, because it has very strong non-linear voltage-current characteristic, influenced the precision of compensation greatly.
The purpose of this utility model is exactly on the basis of above-mentioned D.C. magnetic biasing accent sense arc suppression coil and the adjustable arc suppression coil of a kind of D.C. magnetic biasing magnetic valve type of development, it need not the independent excitation power supply, just can be fast, accurate compensation of ground capacitance current, the reliability and the fail safe that improve power system operation.
The utility model is made up of five column iron cores and corresponding winding.Middle three-limb core and winding connect into three-phase Z type grounding transformer, are characterized in that positive sequence impedance is very high, and zero sequence impedance is very low.One small bore is respectively arranged on the column iron core of both sides, on the upper/lower terminal of small bore section, be with the symmetric winding of band tap respectively, in parallel after upper and lower two winding interconnections of different stem stems, two controllable silicons are connected on respectively between upper and lower two taps on the same stem stem, diode across about intersect the centre of winding, constitute the arc-suppression reactor of magnetic bias control.Three-phase Z type grounding transformer neutral point is through the arc-suppression reactor winding earth, and its three-phase lead-out wire is used for corresponding A, B, the C three-phase that connects electrical network.
When there is (zero sequence) voltage at arc-suppression reactor winding two ends, between the positive and negative half period of this voltage, respectively two controllable silicons are applied trigger impulse, make its conducting, then can in the arc-suppression reactor loop, produce the DC control electric current, this direct current makes two side column small bore iron leg cores saturated, thereby reaches the purpose that changes arc-suppression reactor electric current (capacity) size.The size of DC control electric current depends on two thyristor operating angle degree, and the conducting angle is bigger, and the DC control electric current is strong more, and core of reactor small bore section degree of saturation is high more, and then the electric current (capacity) of arc-suppression reactor output is big more.
The adjustable arc suppression coil of making according to the utility model is one with the arc-suppression reactor of grounding transformer and magnetic bias control is molten; The DC control electric current through providing, need not independent high-capacity direct current field power supply by the arc-suppression reactor both end voltage behind lotus root transformation, silicon controlled rectifier, can guarantee that the arc-suppression reactor voltage-current characteristic has good linearty; Because the both sides column iron core has a saturable small bore section, middle three-limb core is all unsaturated, can make the harmonic wave of arc-suppression reactor reach minimum, has improved the accuracy and the validity of compensation, and has characteristics such as compact overall structure, cost are low.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model, and accompanying drawing 2 is a structure principle chart of the present utility model, below in conjunction with accompanying drawing the utility model is further described.
Three posts in the middle of five column iron cores are formed three-phase Z type grounding transformer, and its three-phase lead-out wire is connected to A, B, the C three-phase of electrical network respectively; Two side columns of five column iron cores respectively have a saturable small bore section, at the upper and lower band tap K that puts respectively of small bore section
1, K
2, K
3, K
4Coil, and be parallel to P and O point after upper and lower two the winding interconnections on the different stem stem; Three-phase Z type grounding transformer neutral point x end is by P point back ground connection (O end); Controllable silicon T
1Be connected to tap K
1And K
2Between, T
2Be connected to tap K
3And K
4Between, diode is connected across the m and n 2 points of side column winding cross-connection point.
Claims (1)
1. adjustable arc suppression coil of being made up of five column iron cores and corresponding windings and controllable silicon, diode is characterized in that:
The middle three-limb core of described five column iron cores and winding connect into three-phase Z type grounding transformer, and its three-phase lead-out wire is used for corresponding A, B, the C three-phase that connects electrical network, and its neutral point is then through adjustable arc-suppression reactor winding cross-connection point [P] ground connection;
One small bore section is respectively arranged on the twosideness iron core of described five column iron cores, and on the upper/lower terminal of small bore section, be with band tap [K respectively
1], [K
2], [K
3], [K
4] symmetric winding, in parallel after upper and lower two the winding interconnections on the different stem stems; Two controllable silicon [T
1], [T
2] be connected on respectively between upper and lower two taps on the same stem stem; Diode [D] is across the centre at left and right intersection winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237927 CN2279028Y (en) | 1996-12-31 | 1996-12-31 | Adjustable arc-extinction winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237927 CN2279028Y (en) | 1996-12-31 | 1996-12-31 | Adjustable arc-extinction winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279028Y true CN2279028Y (en) | 1998-04-15 |
Family
ID=33913378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96237927 Expired - Fee Related CN2279028Y (en) | 1996-12-31 | 1996-12-31 | Adjustable arc-extinction winding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279028Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414804C (en) * | 2003-06-26 | 2008-08-27 | 上海交通大学 | Biax arc suppression coil |
| CN100424957C (en) * | 2006-06-01 | 2008-10-08 | 上海交通大学 | Bias bridge type short circuit current limiter |
| WO2009056018A1 (en) * | 2007-10-31 | 2009-05-07 | Hilton Raymond Bacon | An apparatus and method for starting and stopping an ac induction motor |
| CN110086161A (en) * | 2019-06-21 | 2019-08-02 | 吕婧 | A kind of magnetism-regulating type arc suppression coil earthing system |
-
1996
- 1996-12-31 CN CN 96237927 patent/CN2279028Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100414804C (en) * | 2003-06-26 | 2008-08-27 | 上海交通大学 | Biax arc suppression coil |
| CN100424957C (en) * | 2006-06-01 | 2008-10-08 | 上海交通大学 | Bias bridge type short circuit current limiter |
| WO2009056018A1 (en) * | 2007-10-31 | 2009-05-07 | Hilton Raymond Bacon | An apparatus and method for starting and stopping an ac induction motor |
| US7633260B2 (en) | 2007-10-31 | 2009-12-15 | Hilton Raymond Bacon | Apparatus and method for starting and stopping an AC induction motor |
| CN101919153B (en) * | 2007-10-31 | 2012-10-03 | H·R·培根 | An apparatus and a method for starting and stopping an AC induction motor |
| CN110086161A (en) * | 2019-06-21 | 2019-08-02 | 吕婧 | A kind of magnetism-regulating type arc suppression coil earthing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |