CN201465772U - Structure of T-shaped wiring traction transformer - Google Patents
Structure of T-shaped wiring traction transformer Download PDFInfo
- Publication number
- CN201465772U CN201465772U CN2009200325559U CN200920032555U CN201465772U CN 201465772 U CN201465772 U CN 201465772U CN 2009200325559 U CN2009200325559 U CN 2009200325559U CN 200920032555 U CN200920032555 U CN 200920032555U CN 201465772 U CN201465772 U CN 201465772U
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- winding
- seat
- traction transformer
- low
- side winding
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Abstract
The utility model discloses a structure of a T-shaped wiring traction transformer, which comprises a group of M seat double-column iron cores and a group of T seat double-column iron cores, and the M seat double-column iron cores and the T seat double-column iron cores respectively comprise a high-voltage side winding and a low-voltage side winding. The T-shaped wiring traction transformer is characterized in that the M seat low-voltage side winding and the T seat low-voltage side winding are both connected in series with a voltage regulating winding for connecting each on-load voltage regulating switch, and the M seat low-voltage side winding and the T seat low-voltage side winding are matched with an automatic voltage regulator to realize the automatic voltage regulation of an M seat and a T seat according to load changes. The utility model adopts the structure that two groups of low-voltage windings are separated and connected in series and then two columns are connected in parallel, and a double cake interleaved voltage regulating winding is independently arranged, so that the T-shaped wiring traction transformer has stronger electrically short circuit resisting capability, uniform wave distribution and stable change of each tapping impedance, thereby improving the impact and short circuit resisting capability and the safe reliability of the traction transformer.
Description
Technical field
The utility model relates to a kind of new construction of T type Connection Traction Transformer.Be used for electric railway power transmission and transformation network.
Background technology
The former limit of traction transformer 3 phases, secondary are independent 2 phase loads.The electric railway traction types of locomotive is many, and it is changeable to load, and impact load is big, and short circuit is frequent, easily causes voltage in electrical network and the electric substation, current imbalance and fluctuation big.Conventional no excitation T type Connection Traction Transformer can not change realization voltage with output load and adjust automatically, and range of regulation is little, each grade of transformer tap impedance variation is big, the shock resistance short-circuit capacity is relatively poor, can not satisfy the diversification traction load demand of electric railway fast development, and tap is switched and must be cut off the power supply, and influences efficient and power supply quality.
Summary of the invention
The purpose of this utility model is to provide the structure of the low-voltage loaded regulating traction transformer of a kind of T type wiring, with the power supply quality of the T type Connection Traction Transformer of improving original high pressure non-excitation pressure adjustment, and improves the power supplying efficiency of original traction transformer.This new structure can increase the range of regulation of traction transformer, has improved the shock resistance short-circuit capacity and the security reliability of traction transformer, and has reduced voltage in electrical network negative-sequence current component and the electric substation, current imbalance degree.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of structure of T type Connection Traction Transformer, form by the two groups of twin columns iron cores in Building M and Building T, comprise high-pressure side winding and low-pressure side winding respectively, it is characterized in that: all be in series with the pressure regulation winding in the Building M with Building T low-pressure side winding and be connected separately on-load voltage regulating switch, be used the automatic adjustment that realizes Building M and Building T voltage according to load variations with automatic voltage regulator.
In the such scheme, described high-pressure side winding adopts and is entangled with-continous way two post cascaded structures.Described low-pressure side winding adopts two components to split series connection back two post parallel-connection structures.Described pressure regulation winding is entangled with the formula structure for two cakes, and each cake is lifted one's head by perpendicular copper rod connection, is connected by horizontal copper cash between on-load voltage regulating switch and each tap of pressure regulation winding.The on-load voltage regulating switch of described Building M and Building T and pressure regulation winding are arranged symmetrically.
The on-load voltage regulation structure of the utility model T type wiring has been located at low-pressure side according to the special operation condition of traction load with pressure regulation, has realized the automatic adjustment of Building M and Building T voltage according to load variations by voltage adjuster.Not having excitation T type Connection Traction Transformer with routine compares: realized on-load voltage regulation, and range of regulation is increased to 48% by original 10%; Because impedance low 8.4% and deviation strictness 2 * (Z
T-Z
M)/(Z
T+ Z
M)＜3%, so the low pressure winding adopts two components to split series connection back two post parallel-connection structures, and has established two cakes separately and be entangled with formula pressure regulation winding, electric upward anti-short circuit capability is stronger, and wavelength-division cloth is even, and each tap impedance variation is steady.Improved the shock resistance short-circuit capacity and the security reliability of traction transformer,
Description of drawings
Fig. 1 is an elementary diagram of the present utility model.
Fig. 2 is the lead-in wire layout of pressure regulation winding and on-load voltage regulating switch.
Among Fig. 1 Fig. 2: 10, perpendicular copper rod; 20, pressure regulation winding; 30, horizontal copper cash; 40, the pressure regulation winding is lifted one's head; 50, fuel tank; A, B, C are the high voltage side lead-in terminal that links to each other with electrical network; B, B ' and Y, Y ' are Building T high pressure winding terminal, and A, X and C, Z are Building M high pressure winding terminal; T
Go out, t
Go out, m
Go out, M
Go outBe low-voltage output that links to each other with load; T, t ' and T, T ' are Building T low pressure winding terminal; M, m ' and M, M ' are Building M low pressure winding terminal; Kt, Km are the pressure regulation moving contact; O.L.T.C is an on-load voltage regulating switch.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, a kind of low-voltage loaded pressure regulation T type Connection Traction Transformer structure, range of regulation 48%, 8 grades of progression.The terminal Y of Building T (B phase) high pressure winding is bound up on mid point X, the Z of Building M (A, C phase) high pressure winding, realizes high pressure 3 phases " T type " wiring, and A, C phase phase place and B be 90 ° of phase differences mutually, 180 ° of A, C phase phase differences; The low pressure winding adopts two components to split series connection back two post parallel-connection structures, and the low pressure winding t-t ' of Building T is two groups of windings in parallel after dividing with T-T ', and winding inside is cascaded structure on twin columns; The low pressure winding m-m ' of Building M is two groups of windings in parallel after dividing with M-M ', and winding inside is cascaded structure on twin columns; Established two cakes separately and be entangled with formula pressure regulation winding, with the low pressure windings in series.On-load voltage regulating switch O.L.T.C places fuel tank 50 both sides.Low pressure winding terminal T, t ' go out to link to each other with lead-out terminal T, and low pressure winding terminal t, T ' link to each other with Building T pressure regulation tap, and Building T pressure regulation moving contact Kt goes out to link to each other with lead-out terminal t; Low pressure winding terminal M, m ' and lead-out terminal M
Go outLink to each other, low pressure winding terminal m, M ' link to each other with Building M pressure regulation tap, Building M pressure regulation moving contact Km and lead-out terminal m
Go outLink to each other.
As shown in Figure 2, the pressure regulation winding adopts two cakes to be entangled with the formula structure, and perpendicular copper rod 10 is used for connecting each cake that two cakes are entangled with formula pressure regulation winding lifts one's head, and horizontal copper cash 30 is used for connecting each tap and the on-load voltage regulating switch O.L.T.C of pressure regulation winding, symmetric arrangement has been noted the layout and the adjustment of each step voltage.Because arrangement is orderly, neat, compact, it is little to take up room, and saves cost.
The beneficial effects of the utility model are:
1. the low pressure winding adopts two components to split two post parallel-connection structures after the series connection, rationally control with distributed stray field, satisfied the impedance requirement;
2. set up separately two cakes to be entangled with formula pressure regulation winding, range of regulation 48%. Carried out voltage gradient and wavelength-division cloth and calculated, made transformer anti-short circuit capability on electrical design stronger, the ampere-turn more balance that distributes, each tap impedance variations is more steady. Realized that T-shaped Connection Traction Transformer from no-load to the change of carrying is arranged, meets the trend of tractive transformer development.
3. respectively establish a vacuum on-load voltage regulating switch that is arranged symmetrically with in low pressure Building M and Building T, two tap lead symmetric arrays are orderly, neat, compact. It is little to take up room, and saves cost, for setting up conservation-minded society and sustainable development important in inhibiting.
Claims (5)
1. the structure of a T type Connection Traction Transformer, form by the two groups of twin columns iron cores in Building M and Building T, comprise high-pressure side winding and low-pressure side winding respectively, it is characterized in that: all be in series with the pressure regulation winding in the Building M with Building T low-pressure side winding and be connected separately on-load voltage regulating switch.
2. the structure of T type Connection Traction Transformer as claimed in claim 1 is characterized in that: described high-pressure side winding adopts and is entangled with-continous way two post cascaded structures.
3. the structure of T type Connection Traction Transformer as claimed in claim 1 is characterized in that: described low-pressure side winding adopts two components to split series connection back two post parallel-connection structures.
4. the structure of T type Connection Traction Transformer as claimed in claim 1 is characterized in that: described pressure regulation winding is entangled with the formula structure for two cakes, and each cake is lifted one's head by perpendicular copper rod connection, is connected by horizontal copper cash between on-load voltage regulating switch and each tap of pressure regulation winding.
5. the structure of T type Connection Traction Transformer as claimed in claim 4 is characterized in that: the on-load voltage regulating switch of described Building M and Building T and pressure regulation winding are arranged symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200325559U CN201465772U (en) | 2009-04-13 | 2009-04-13 | Structure of T-shaped wiring traction transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200325559U CN201465772U (en) | 2009-04-13 | 2009-04-13 | Structure of T-shaped wiring traction transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201465772U true CN201465772U (en) | 2010-05-12 |
Family
ID=42393120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200325559U Expired - Fee Related CN201465772U (en) | 2009-04-13 | 2009-04-13 | Structure of T-shaped wiring traction transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201465772U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908412A (en) * | 2010-07-01 | 2010-12-08 | 沈阳铸造研究所 | Power supply system for large-size electroslag furnace |
| CN103325546A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | Novel cake-shaped coil with neutral point voltage regulating section in middle |
| CN109950033A (en) * | 2019-04-15 | 2019-06-28 | 特变电工沈阳变压器集团有限公司 | A kind of Vv of variable flux voltage variation (VFVV) connects tractive transformer |
-
2009
- 2009-04-13 CN CN2009200325559U patent/CN201465772U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908412A (en) * | 2010-07-01 | 2010-12-08 | 沈阳铸造研究所 | Power supply system for large-size electroslag furnace |
| CN103325546A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | Novel cake-shaped coil with neutral point voltage regulating section in middle |
| CN103325546B (en) * | 2013-07-17 | 2016-08-10 | 国家电网公司 | The neutral point pressure regulation section disk-type winding at middle part |
| CN109950033A (en) * | 2019-04-15 | 2019-06-28 | 特变电工沈阳变压器集团有限公司 | A kind of Vv of variable flux voltage variation (VFVV) connects tractive transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xi'an west change special electric Co., Ltd. Assignor: China XD Electronic Corporation Contract record no.: 2011610000070 Denomination of utility model: Structure of T-shaped wiring traction transformer Granted publication date: 20100512 License type: Exclusive License Record date: 20110704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20180413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |