CN1302493C - Method of lowering impact induction potential of large volume autotransformer - Google Patents
Method of lowering impact induction potential of large volume autotransformer Download PDFInfo
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- CN1302493C CN1302493C CNB200410050672XA CN200410050672A CN1302493C CN 1302493 C CN1302493 C CN 1302493C CN B200410050672X A CNB200410050672X A CN B200410050672XA CN 200410050672 A CN200410050672 A CN 200410050672A CN 1302493 C CN1302493 C CN 1302493C
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- magnetic flux
- flux device
- autotransformer
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Abstract
The present invention relates to a method of lowering impact induction potential of a large capacity autotransformer. The present invention provides a lightning preventing and impact potential preventing method suitable for a super-large capacity loading voltage regulation autotransformer in view of defects existing in a defence method for the breakdown harm, the short circuit harm, the firing harm, etc. created on electric products by lightning impulse waves. The method installs a capacitor for absorbing impulse wave potential on an excitation II winding controlling the change of magnetic flux, and the capacitor is connected with the winding in parallel. The capacitance of the capacitor is from 9000 to 12000PF, and the impulse withstand voltage value is from 475KV to 525KV. The method has high capability for absorbing the impulse wave potential, high safety and reliability and is favorable to improving the production quality and reducing the cost.
Description
Technical field
The present invention relates to a kind of method that big capacity autotransformer impacts induced potential that reduces, especially about reducing the method that the vast capacity autotransformer impacts induced potential.
Background technology
Present commercially available autotransformer, in order to reduce or weaken the destruction of lightning surge to autotransformer, in transformer, adopt shielding actuating coil method usually, improve dielectric strength or the lightning arrester method is set in transformer, first kind of way can make volume of transformer increase, second kind of way can make cost increase, and the third way does not allow to use sometimes.
Summary of the invention
In order to overcome the existing in prior technology weak point, the invention provides a kind of vast capacity self-coupling on-load voltage-regulating transformer that is used for and reduce the also appearance method of impacting induced potential, this method is simple in structure, reliable, reaction speed is fast, it is strong to absorb the shock wave ability, and the duty volume is little, and cost is low.
The technical solution adopted for the present invention to solve the technical problems is: it comprises the common winding that persevering magnetic flux device is provided with on one's body, excitatory I winding, pressure regulation winding; Become series connection winding, excitatory II winding that the magnetic flux device is provided with on one's body; The wherein common winding and the windings in series of connecting; Excitatory I winding, excitatory II winding and pressure regulation windings in series; Excitatory II winding is provided with the electric capacity that is used to absorb the shock wave current potential, and in parallel with it, and its capacitance is 9000～12000PF, and the impulse withstand voltage value is 475KV～525KV.
The invention has the beneficial effects as follows: it is strong to absorb the shock wave ability, and anti-thunder and lightning is effective, safe and reliable, and the duty volume is little, and cost is low, is particularly suitable for using on the vast capacity autotransformer.
Description of drawings
Figure is a circuit structure principle schematic of the present invention;
Among the figure: 1 permanent magnetic flux device body, 2 becomes magnetic flux device body, MV
1-3Common winding, GV
1-3Excitatory I winding, TV
1-3Pressure regulation winding, HV
1-3Series connection winding, JV
1-3Excitatory II winding, C
1-3Electric capacity, K on load tap changer.
Embodiment
The present invention as shown in the figure, it includes by permanent magnetic flux device body 1 and becomes the magnetic circuit part that magnetic flux device body 2 is formed; By common winding MV
1-3, excitatory I winding GV
1-3, pressure regulation winding TV
1-3, series connection winding HV
1-3, excitatory II winding JV
1-3The circuit part of forming; Wherein be located at the common winding MV on the permanent magnetic flux device body 1
1-3Be located at the winding HV that connects that becomes on the magnetic flux device body 2
1-3Series connection respectively after the grouping; Be located at the excitatory I winding GV on the permanent magnetic flux device body 1
1-3With the excitatory II winding JV that is located on the change magnetic flux device body 2
1-3Series connection respectively after the grouping; Excitatory I winding GV
1-3One end links to each other with on load tap changer K, pressure regulation winding TV
1-3The head and the tail two ends respectively with+,-terminal links to each other its pressure regulation winding TV
1-3Tapping point and excitatory II winding JV
1-3End divide into groups to link to each other pressure regulation winding TV respectively
1-3Set a plurality of tapping points are used for pressure regulation to be selected, and for reducing or reduce or cutting down the destruction of lightning impulse vibration potential to excitatory I winding, excitatory II winding, pressure regulation winding, in parallel being provided with absorbs the capacitor C that shock wave is used on excitatory II winding
1-3, its capacitance is 9000～12000PF, and the impulse withstand voltage value is 475KV～525KV, and the work coupling selects for use capacitance as showing:
| Autotransformer capacity (MVA) | Excitatory II winding (number of turn) | Capacitance (PF) | Impulse withstand voltage value (KV) |
| 300 | 120 | 9000±10％ | 500±5％ |
| 500 | 150 | 10000±10％ | 500±5％ |
| 900 | 200 | 12000±10％ | 500±5％ |
Claims (1)
1. one kind is reduced the method that big capacity autotransformer impacts induced potential, and it includes by permanent magnetic flux device body and becomes the magnetic circuit part that magnetic flux device body is formed; By common winding MV
1-3, excitatory I winding GV
1-3, pressure regulation winding TV
1-3, series connection winding HV
1-3, excitatory II winding JV
1-3The circuit part of forming; Wherein be located at permanent magnetic flux device common winding MV on one's body
1-3Become the magnetic flux device winding HV that connects on one's body with being located at
1-3Series connection respectively after the grouping; Be located at permanent magnetic flux device excitatory I winding GV on one's body
1-3Become magnetic flux device excitatory II winding JV on one's body with being located at
1-3Series connection respectively after the grouping; Excitatory I winding GV
1-3One end links to each other with on load tap changer K, pressure regulation winding TV
1-3The head and the tail two ends respectively with+,-terminal links to each other its pressure regulation winding TV
1-3Tapping point and excitatory II winding JV
1-3End divide into groups respectively to link to each other, it is characterized in that excitatory II winding is provided with the electric capacity that is used to absorb the shock wave current potential, and in parallel with it, capacitance is 9000～12000PF, the impulse withstand voltage value is 475KV～525KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410050672XA CN1302493C (en) | 2004-10-26 | 2004-10-26 | Method of lowering impact induction potential of large volume autotransformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410050672XA CN1302493C (en) | 2004-10-26 | 2004-10-26 | Method of lowering impact induction potential of large volume autotransformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601667A CN1601667A (en) | 2005-03-30 |
| CN1302493C true CN1302493C (en) | 2007-02-28 |
Family
ID=34665926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410050672XA Active CN1302493C (en) | 2004-10-26 | 2004-10-26 | Method of lowering impact induction potential of large volume autotransformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1302493C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7860084B2 (en) | 2001-10-11 | 2010-12-28 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
| US7873058B2 (en) | 2004-11-08 | 2011-01-18 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
Families Citing this family (2)
| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948359A (en) * | 1975-04-14 | 1976-04-06 | General Motors Corporation | Vehicle hydraulic shock absorber and indicating system |
| CN85204856U (en) * | 1985-10-25 | 1986-09-03 | 常州市兰陵电器控制设备厂 | Autotransformer starter without secondary surge current |
-
2004
- 2004-10-26 CN CNB200410050672XA patent/CN1302493C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948359A (en) * | 1975-04-14 | 1976-04-06 | General Motors Corporation | Vehicle hydraulic shock absorber and indicating system |
| CN85204856U (en) * | 1985-10-25 | 1986-09-03 | 常州市兰陵电器控制设备厂 | Autotransformer starter without secondary surge current |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7860084B2 (en) | 2001-10-11 | 2010-12-28 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
| US7889720B2 (en) | 2001-10-11 | 2011-02-15 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
| US7953071B2 (en) | 2001-10-11 | 2011-05-31 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
| US7873058B2 (en) | 2004-11-08 | 2011-01-18 | Mosaid Technologies Incorporated | Outlet with analog signal adapter, a method for use thereof and a network using said outlet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1601667A (en) | 2005-03-30 |
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| C14 | Grant of patent or utility model | ||
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