CN205264475U - Novel 35kV becomes oily formula grounding transformer of magnetic flow - Google Patents
Novel 35kV becomes oily formula grounding transformer of magnetic flow Download PDFInfo
- Publication number
- CN205264475U CN205264475U CN201521032292.3U CN201521032292U CN205264475U CN 205264475 U CN205264475 U CN 205264475U CN 201521032292 U CN201521032292 U CN 201521032292U CN 205264475 U CN205264475 U CN 205264475U
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- winding
- secondary winding
- iron core
- neutral point
- transformer
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Abstract
The utility model discloses a 35kV becomes magnetic flow grounding transformer, transformer ware body contains the iron core, primary winding and secondary winding, the iron core is 45 3 step -by -step piles of three -limb three phase, primary winding and secondary winding suit are on the three stem stem of iron core, the outside at secondary winding is arranged to the primary winding, the primary winding adopts zigzag zn type connection, the neutral point is drawn forth, it takes a percentage to be equipped with the pressure regulating shunting above the secondary winding, the pressure regulating shunting is taken a percentage and is linked with off circuit tap changer through the lead wire, secondary winding adopts star yn connection, the neutral point is drawn forth. The utility model has the characteristics of material cost is low, the equipment input is little, and simple structure is practical, performance safe and reliable, and it is convenient to maintain.
Description
Technical field
The utility model relates to a kind of oil immersed type grounding transformer.
Background technology
In the three-phase electrical power system of neutral point insulation; because cable capacitance electric current is increasing; trolley line is easily subject to the effect such as cloud, rain and induction electrostatic charge, and change line-to-earth voltage, jeopardizes apparatus insulated and safe operation electrical network; for the generation of Accident prevention; for system provides enough zero-sequence current and residual voltages, make ground protection action message, need to artificially set up a neutral point; to at neutral point access earth resistance or arc suppression coil, need to provide a grounding transformer. Because grounding transformer adopts Zn connection, one time winding is divided into two windings, for meeting the fluctuation of system voltage, needs on two windings, off circuit tap changer to be set respectively, realizes the requirement of pressure regulation, and structure is complicated with manufacture.
Summary of the invention
The problems referred to above that exist for solving prior art, the utility model provides a kind of novel 35kV to become magnetic flux oil immersed type grounding transformer, and its technical scheme of taking is:
Comprise fuel tank and be located at the transformer body in fuel tank, transformer body comprises iron core, winding and Secondary Winding, iron core is the folded three-phase three-limb of 45 ° of three stepping, winding and Secondary Winding are sleeved on three stem stems of iron core, a winding is arranged in the outside of Secondary Winding, a winding is drum type brake, be divided into two parts of equal turn numbers, one time winding adopts indentation Zn type connection, neutral point is drawn, Secondary Winding is drum type brake, above it, be provided with pressure regulation shunting tap, pressure regulation shunting tap is connected by lead-in wire and off circuit tap changer, Secondary Winding adopts star yn connection, neutral point is drawn.
The utility model Secondary Winding is provided with shunting tap, and lead-in wire is made simple. Not only for electric power system provides an artificial neutral point, to connect and carry out ground connection with earth resistance or arc suppression coil, and export with the power distribution of 0.4kV, avoid the overlapping investment of transformer station to distribution transformer, reduce the open circuit loss of transformer, reduce energy resource consumption, saved floor space.
The utlity model has that the cost of material is low, simple and practical, performance safety is reliable, feature easy to maintenance.
Brief description of the drawings
Fig. 1 is the structural representation of transformer body of the present utility model;
Fig. 2 is that a winding of the present utility model connects schematic diagram;
Fig. 3 is that Secondary Winding of the present utility model connects schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, this transformer comprises fuel tank and is located at the transformer body in fuel tank, transformer body comprises iron core 3, winding 4 and a Secondary Winding 5, iron core 3 is the folded three-phase three-limb of 45 ° of three stepping, winding 4 and Secondary Winding 5 are sleeved on three stem stems of iron core, and a winding 4 is arranged in the outside of Secondary Winding 5.
As shown in Figures 2 and 3, one time winding 4 is drum type brake, is divided into two parts of equal turn numbers, and one time winding 4 adopts indentation Zn type connection, and neutral point is drawn, so that for connecing arc suppression coil or earth resistance. Secondary Winding 5 is drum type brake, is provided with pressure regulation shunting tap above it, and pressure regulation shunting tap 12 is connected with off circuit tap changer 10 by going between, and Secondary Winding 5 adopts star yn connection, and neutral point is drawn, as distribution power supply in station.
Claims (1)
1. a novel 35kV becomes magnetic flux oil immersed type grounding transformer, comprise fuel tank and be located at the transformer body in fuel tank, it is characterized in that: transformer body comprises iron core (3), a winding (4) and Secondary Winding (5), iron core (3) is the folded three-phase three-limb of 45 ° of three stepping, a winding (4) and Secondary Winding (5) are sleeved on three stem stems of iron core, a winding (4) is arranged in the outside of Secondary Winding (5), a winding (4) is drum type brake, be divided into two parts of equal turn numbers, a winding (4) adopts indentation Zn type connection, neutral point is drawn, Secondary Winding (5) is drum type brake, above it, be provided with pressure regulation shunting tap, pressure regulation shunting tap is connected by lead-in wire (12) and off circuit tap changer (10), Secondary Winding (5) adopts star yn connection, neutral point is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032292.3U CN205264475U (en) | 2015-12-14 | 2015-12-14 | Novel 35kV becomes oily formula grounding transformer of magnetic flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521032292.3U CN205264475U (en) | 2015-12-14 | 2015-12-14 | Novel 35kV becomes oily formula grounding transformer of magnetic flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205264475U true CN205264475U (en) | 2016-05-25 |
Family
ID=56005991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521032292.3U Expired - Fee Related CN205264475U (en) | 2015-12-14 | 2015-12-14 | Novel 35kV becomes oily formula grounding transformer of magnetic flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205264475U (en) |
-
2015
- 2015-12-14 CN CN201521032292.3U patent/CN205264475U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20181214 |