CN205211577U - Two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer - Google Patents
Two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer Download PDFInfo
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- CN205211577U CN205211577U CN201521096767.5U CN201521096767U CN205211577U CN 205211577 U CN205211577 U CN 205211577U CN 201521096767 U CN201521096767 U CN 201521096767U CN 205211577 U CN205211577 U CN 205211577U
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Abstract
The utility model relates to a two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer belongs to transformer equipment technical field. Technical scheme is: arrange in proper order unshakable in one's determination (1), low voltage coil (2), interior voltage regulation coil (3), outer voltage regulation coil (4), middling pressure coil (5), high -pressure coil (6), interior voltage regulation coil, outer voltage regulation coil pass through the shunting lead wire transformer ware body outside with the tapping switch intercommunication, the quantity of shunting lead wire and the tapping switch quantity phase -match of pressure regulating, non -linear resistor znO valve block (7) set up between every adjacent two shuntings lead wire, the quantity phase -match of quantity and shunting lead wire. The beneficial effects of the utility model are that: adopt the outer voltage regulating mode of nei, for the non -linear resistor znO valve block is installed additional at the voltage regulation coil interstage to the simple easy operation of shunting lead wire wiring, the easy realization, has restricted the interstage overvoltage, has improved the lightning impulse endurance of transformer, has improved the fail safe nature of transformer.
Description
Technical field
The utility model relates to a kind of two voltage regulation coil structures of Large Copacity self-coupling on-load voltage-regulating transformer, belongs to technical field of transformer equipment.
Background technology
Large Copacity, high-tension on-load tap-changing transformer, range of regulation is large, and progression is many, tap lead is many, and when selecting shunting switch, to cut-offfing, the requirement of the technical parameter such as capacity, insulation level is higher, so the structure of appropriate design voltage regulation coil, particularly important to selection shunting switch; In addition, jumbo on-load tap-changing transformer Heavy Weight, size is large, is proposed higher requirement to technique, manufacture, transport etc., and the single voltage regulation coil voltage regulating mode used at present brings tap lead wiring complicated, and manufacture, technique realize the technical problems such as difficulty.
Utility model content
The utility model object is to provide a kind of two voltage regulation coil structures of Large Copacity self-coupling on-load voltage-regulating transformer, adopt the voltage regulating mode of inside and outside layer, make tap lead wiring simple to operation, easily realize, nonlinear resistance ZnO(zinc oxide is installed additional at voltage regulation coil inter-stage) valve block, limit inter-stage overvoltage, improve the lightning impulse withstand ability of transformer, improve the security reliability of transformer, solve the problems referred to above existed in background technology.
The technical solution of the utility model is: a kind of two voltage regulation coil structures of Large Copacity self-coupling on-load voltage-regulating transformer, comprise iron core, low-voltage coil, internal pressure-regulating coil, outer voltage regulation coil, intermediate voltage winding, high-tension coil and nonlinear resistance ZnO valve plate, described iron core, low-voltage coil, internal pressure-regulating coil, outer voltage regulation coil, intermediate voltage winding, high-tension coil is arranged in order, internal pressure-regulating coil, outer voltage regulation coil is communicated with shunting switch in transformer body outside by tap lead, the quantity of tap lead and the shunting switch quantity of pressure regulation match, nonlinear resistance ZnO valve plate is arranged on often between adjacent two tap leads, the quantity of quantity and tap lead matches.
The quantity of described tap lead is 10 a pair.
The beneficial effects of the utility model are: the voltage regulating mode adopting inside and outside layer, make tap lead wiring simple to operation, easily realize, nonlinear resistance ZnO valve plate is installed additional at voltage regulation coil inter-stage, limit inter-stage overvoltage, improve the lightning impulse withstand ability of transformer, improve the security reliability of transformer.
Accompanying drawing explanation
Fig. 1 is coil arrangement structure figure of the present utility model;
Fig. 2 is the elementary diagram of the utility model voltage regulation coil;
Fig. 3 is the winding diagram of the utility model nonlinear resistance ZnO valve plate;
In figure: iron core 1, low-voltage coil 2, internal pressure-regulating coil 3, outer voltage regulation coil 4, intermediate voltage winding 5, high-tension coil 6, nonlinear resistance ZnO valve plate 7.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described in further detail.
A kind of two voltage regulation coil structures of Large Copacity self-coupling on-load voltage-regulating transformer, comprise unshakable in one's determination 1, low-voltage coil 2, internal pressure-regulating coil 3, outer voltage regulation coil 4, intermediate voltage winding 5, high-tension coil 6 and nonlinear resistance ZnO valve plate 7, described iron core, low-voltage coil, internal pressure-regulating coil, outer voltage regulation coil, intermediate voltage winding, high-tension coil is arranged in order, internal pressure-regulating coil, outer voltage regulation coil is communicated with shunting switch in transformer body outside by tap lead, the quantity of tap lead and the shunting switch quantity of pressure regulation match, nonlinear resistance ZnO valve plate is arranged on often between adjacent two tap leads, the quantity of quantity and tap lead matches.
The quantity of described tap lead is 10 a pair.
In actual applications, the structure of internal pressure-regulating coil and outer voltage regulation coil is adopted.Internal pressure-regulating coil and outer voltage regulation coil are drawn respectively, connect outward at device body, realize each tap position of pressure regulation, and at the indirect nonlinear resistance ZnO valve plate of adjacent tap lead, each tap lead is connected with shunting switch the most at last.
Claims (2)
1. two voltage regulation coil structures of a Large Copacity self-coupling on-load voltage-regulating transformer, it is characterized in that: comprise iron core (1), low-voltage coil (2), internal pressure-regulating coil (3), outer voltage regulation coil (4), intermediate voltage winding (5), high-tension coil (6) and nonlinear resistance ZnO valve plate (7), described iron core (1), low-voltage coil (2), internal pressure-regulating coil (3), outer voltage regulation coil (4), intermediate voltage winding (5), high-tension coil (6) is arranged in order, internal pressure-regulating coil (3), outer voltage regulation coil (4) is communicated with shunting switch in transformer body outside by tap lead, the quantity of tap lead and the shunting switch quantity of pressure regulation match, nonlinear resistance ZnO valve plate (7) is arranged on often between adjacent two tap leads, the quantity of quantity and tap lead matches.
2. two voltage regulation coil structures of a kind of Large Copacity self-coupling on-load voltage-regulating transformer according to claim 1, is characterized in that: the quantity of described tap lead is 10 a pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096767.5U CN205211577U (en) | 2015-12-28 | 2015-12-28 | Two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521096767.5U CN205211577U (en) | 2015-12-28 | 2015-12-28 | Two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer |
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| Publication Number | Publication Date |
|---|---|
| CN205211577U true CN205211577U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521096767.5U Active CN205211577U (en) | 2015-12-28 | 2015-12-28 | Two voltage regulation coil structures of large capacity self coupling on -load voltage -regulating transformer |
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| CN (1) | CN205211577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137909A (en) * | 2019-05-31 | 2019-08-16 | 深圳供电局有限公司 | Protect the method and over-pressure safety device of adjustable transformer |
-
2015
- 2015-12-28 CN CN201521096767.5U patent/CN205211577U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137909A (en) * | 2019-05-31 | 2019-08-16 | 深圳供电局有限公司 | Protect the method and over-pressure safety device of adjustable transformer |
| CN110137909B (en) * | 2019-05-31 | 2021-07-16 | 深圳供电局有限公司 | Method for protecting a step-up transformer and overvoltage protection device |
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