CN205723093U - A kind of 220kV SCOTT balance traction transformer winding construction - Google Patents
A kind of 220kV SCOTT balance traction transformer winding construction Download PDFInfo
- Publication number
- CN205723093U CN205723093U CN201620241977.7U CN201620241977U CN205723093U CN 205723093 U CN205723093 U CN 205723093U CN 201620241977 U CN201620241977 U CN 201620241977U CN 205723093 U CN205723093 U CN 205723093U
- Authority
- CN
- China
- Prior art keywords
- building
- winding
- scott
- transformator
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
A kind of 220kV SCOTT balance traction transformer winding construction, belongs to railway tractive transformer and manufactures field.Building T high voltage winding group end is drawn and is connected with Building M high voltage winding group end, form SCOTT transformator；Building T is the transformator that winding is disposed vertically, and Building M is the transformator of winding horizontal positioned；Primary side three-phase 220kV voltage transformation is secondary side biphase 2*27.5kV voltage by this SCOTT transformator, and this two phase voltage differs from 90 ° in phase place；Use the SCOTT wiring patterns that 220/2*27.5kV secondary side midpoint is extracted out；Building T low pressure winding a1, a2；A3, a4 intersect series connection, constitute Building T 27.5kV leading-out terminal T N1 and t N1；Building M b1, b2；B3, b4 intersect series connection respectively, constitute Building M 27.5kV leading-out terminal M N2 and m N2.There is good insulation preformance, simple in construction, anti-short circuit capability and capability of overload strong, the stability that electric railway electrical network is powered can be effectively improved, reduce power network negative-sequence current, reduce line loss.
Description
Technical field
This utility model belongs to railway tractive transformer manufacturing technology field, relates to a kind of Novel balance Transformer Winding
Structure.
Background technology
The power supply mode that electric railway traction transformer station of China uses, high voltage side of transformer electric current is uneven system mostly
System (as used the tractive transformer of VX and VV wiring).Along with the fast development of China's electric railway, in the urgent need to independently opening
Send out a kind of Novel structure transformer, solve the tradition unbalanced problem of tractive transformer high-tension current.
Summary of the invention
Solving the technical problem that: use the transformator of new winding construction, it is ensured that high voltage side current three-phase symmetrical, raising is led
Draw the stability becoming power supply network.
The purpose of this utility model is to provide a kind of 220kV SCOTT balance traction transformer winding construction, solves existing
There is the unbalanced problem of tractive transformer high-voltage fence.
The technical scheme that this utility model is used:
By the extraction of Building T (transformator that in Fig. 1, winding is disposed vertically) high voltage winding group end, (in Fig. 1, winding level is put with Building M
The transformator put) high voltage winding group end be connected, formed SCOTT wiring.Primary side three-phase 220kV voltage transformation is by this transformator
Secondary side biphase 2*27.5kV voltage, this two phase voltage differs from 90 ° in phase place.According to user's requirement, transformator uses 220/2*
The SCOTT wiring patterns that 27.5kV secondary side midpoint is extracted out, key wiring diagram is shown in Fig. 1.According to winding actual arrangement situation, for fall
Low T uprises the reactance that pressure winding current is caused in M uprises pressure winding, M uprise arrange inside pressure winding balance winding (and
Tie, one point earth).
Building T and Building M iron core are respectively adopted port type iron core structure, and winding construction mode is shown in Fig. 2.Building T low pressure winding a1,
a2；A3, a4, Building M b1, b2；B3, b4 intersect series connection respectively, constitute Building T 27.5kV leading-out terminal T-N1；T-N1 and Building M 27.5kV goes out
Line end M-N2 and m-N2.Wherein, TN1, MN2 are 27.5kV locomotive up-downgoing supply side, and t N1, m N2 are that 27.5kV locomotive is upper and lower
Row supply side.
In Transformer Winding designs, high pressure winding conducting wire uses half hard copper wire, adds outer stay, low pressure winding and balance around
Group uses self-adhering transposed conductor, interior loop liner cardboard cylinder, analyzes according to transformator magnetic field calculation, and the M arranging balance winding becomes
Leakage field is relatively big, and the structural member of corresponding leakage path takes measures, and prevents transformator from producing hot-spot.This technical scheme achieves
Primary side current is symmetrical three-phase system and meets the requirement that traction power supply circuit AT (auto-transformer type) is powered.
Novel balance tractive transformer and the difference of conventional balance traction transformer: low-pressure secondary side mid-point tap, convenient
Field connection (N1, N2 in Fig. 1, N1 Yu N2 a little draws from case lid)；Arranging 220kV high pressure winding by Fig. 2, design is simple, side
Just cabling, thus improve the reliability of insulation.
The beneficial effects of the utility model:
Novel SCOTT wiring balancing tractive transformer has good insulation preformance, simple in construction, anti-short circuit capability and overload
Ability is strong, can be effectively improved the stability that electric railway electrical network is powered, and reduces power network negative-sequence current, reduces circuit and damages
Consumption.This utility model the most successfully produces two, and its performance indications fully meet technology requirement.Its model machine is tried by sudden short circuit
Test.Fill up country blank.
Accompanying drawing explanation
Fig. 1 novel SCOTT wiring balancing tractive transformer elementary diagram
Fig. 2 novel SCOTT wiring balancing tractive transformer winding construction figure
In figure: 1T seat low pressure TN1 winding 27.5kV, 2T seat low pressure tN1 winding 27.5kV 3T seat height pressure A winding4M seat low pressure m N2 winding 27.5kV 5M seat low pressure M N2 winding 27.5kV 6 balances winding P1 P1 ' (P2
P2 ') 10kV 7M seat height pressure B winding 110kV8M seat height pressure C winding 110kV.
Fig. 3 novel SCOTT wiring balancing tractive transformer winding case lid lifts one's head layout drawing
Detailed description of the invention
Novel SCOTT wiring balancing tractive transformer uses double body structure, and T becomes and M becomes iron core and uses port type iron core.
Arranging that former limit three-phase 220kV voltage transformation is secondary biphase 2*27.5kV voltage by the tractive transformer of winding by Fig. 1, these are two years old
Phase voltage differs 90 ° in phase place, and wherein TN, MN are 27.5kV supply side, and tN, mN are 27.5kV supply side.
During winding construction, Building T is intersected with Building M two low-voltage coil on two posts of single-phase port type iron core and connects, its
Rated voltage is 27.5kV, and high pressure A phase two post outer high-tension coil in Building T is in parallel, rated voltage 190.526kVBuilding M
The outer high-tension coil of two posts is respectively B, C coil, rated voltage 110kV, and Building T A phase end is connected with Building M B, C-terminal, is formed
SCOTT wiring.Uprise, for reducing T, the reactance that pressure winding current is caused in M uprises pressure winding, uprise inside pressure winding at M
Balance winding (and tie) is set.By Fig. 2 winding construction mode, it is achieved that high pressure primary side current is symmetrical three-phase system,
Thus solve the unbalanced problem of tractive transformer power supply grid.
Claims (2)
1. a 220kV SCOTT balance traction transformer winding construction, it is characterised in that:
Building T high voltage winding group end is drawn and is connected with Building M high voltage winding group end, form SCOTT transformator；Building T is that winding is vertical
The transformator placed, Building M is the transformator of winding horizontal positioned；This SCOTT transformator is by primary side three-phase 220kV voltage transformation
For secondary side biphase 2*27.5kV voltage, this two phase voltage differs from 90 ° in phase place；220/2*27.5kV secondary side midpoint is used to take out
The SCOTT wiring patterns gone out；
Building T low pressure winding a1, a2；A3, a4 intersect series connection, constitute Building T 27.5kV leading-out terminal T-N1 and t-N1；Building M b1, b2；b3、
B4 intersects series connection respectively, constitutes Building M 27.5kV leading-out terminal M-N2 and m-N2.
A kind of 220kV SCOTT balance traction transformer winding construction the most according to claim 1, it is characterised in that: Building T
It is respectively adopted port type iron core structure with Building M iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241977.7U CN205723093U (en) | 2016-03-26 | 2016-03-26 | A kind of 220kV SCOTT balance traction transformer winding construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241977.7U CN205723093U (en) | 2016-03-26 | 2016-03-26 | A kind of 220kV SCOTT balance traction transformer winding construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205723093U true CN205723093U (en) | 2016-11-23 |
Family
ID=57314833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241977.7U Active CN205723093U (en) | 2016-03-26 | 2016-03-26 | A kind of 220kV SCOTT balance traction transformer winding construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205723093U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680784A (en) * | 2017-10-31 | 2018-02-09 | 山东华宁电伴热科技有限公司 | A kind of kelvin effect Scott transformers |
| CN109065338A (en) * | 2018-09-12 | 2018-12-21 | 成都尚华电气有限公司 | A kind of homo-phase traction transformer |
| CN109215977A (en) * | 2018-09-12 | 2019-01-15 | 西南交通大学 | A kind of traction-compensator transformer |
-
2016
- 2016-03-26 CN CN201620241977.7U patent/CN205723093U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680784A (en) * | 2017-10-31 | 2018-02-09 | 山东华宁电伴热科技有限公司 | A kind of kelvin effect Scott transformers |
| CN109065338A (en) * | 2018-09-12 | 2018-12-21 | 成都尚华电气有限公司 | A kind of homo-phase traction transformer |
| CN109215977A (en) * | 2018-09-12 | 2019-01-15 | 西南交通大学 | A kind of traction-compensator transformer |
| CN109215977B (en) * | 2018-09-12 | 2023-09-29 | 西南交通大学 | Traction-compensation transformer |
| CN109065338B (en) * | 2018-09-12 | 2023-10-03 | 成都尚华电气有限公司 | In-phase traction transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201804691U (en) | Single-phase super-capacity transformer for nuclear power station | |
| CN105719799B (en) | A kind of transformer with split winding | |
| CN205723093U (en) | A kind of 220kV SCOTT balance traction transformer winding construction | |
| CN103680883A (en) | 500kV-level split on-load voltage regulation power transformer | |
| CN204117774U (en) | A kind of transformer with split winding | |
| CN202839279U (en) | Three-phase three-winding traction and power hybrid transformer | |
| CN102315007B (en) | Single-phase ultra-high-capacity nuclear power station transformer | |
| CN207743029U (en) | A kind of quadripartion photovoltaic energy storage transformer | |
| CN101192467B (en) | Amorphous alloy ground transformer body structure | |
| CN201741561U (en) | Power transformer with shell type structure | |
| CN203338934U (en) | 66kV grounding transformer with power distribution output for station | |
| CN202384159U (en) | Traction transformer in Scott connexion | |
| CN102436918B (en) | Traction transformer for Scott wiring | |
| CN203406145U (en) | Opened coiled iron core oil-immersed transformer | |
| CN201820605U (en) | Disperse-compensation capacitance-current transformer for medium voltage system | |
| CN103794343B (en) | A kind of line end on-load voltage regulation single-phase 220kV high-impedance transformer | |
| CN112380635A (en) | Design method of special split type transformer | |
| CN202977146U (en) | Single-phase superhigh-voltage large-capacity off-circuit-regulation alternating current step-up transformer | |
| CN2328088Y (en) | Balancing transformer for converting three phase source into double phase one | |
| CN103489594A (en) | Traction-type transformer coil structure | |
| CN101615491A (en) | The mode of connection of traction transformer winding | |
| CN201975222U (en) | Asymmetrical wiring balanced transformer | |
| CN206657711U (en) | A kind of band 380V assists winding photovoltaic generation dry-type transformers | |
| CN201868216U (en) | Serial traction transformer having two low voltage winding layers in same box used in AT power supply | |
| CN207319874U (en) | Single-phase self-coupling railway traction transformer machine body structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |