CN203013472U - Lead wire structure capable of meeting requirements of direct current resistance balance of split transformer - Google Patents
Lead wire structure capable of meeting requirements of direct current resistance balance of split transformer Download PDFInfo
- Publication number
- CN203013472U CN203013472U CN 201220689037 CN201220689037U CN203013472U CN 203013472 U CN203013472 U CN 203013472U CN 201220689037 CN201220689037 CN 201220689037 CN 201220689037 U CN201220689037 U CN 201220689037U CN 203013472 U CN203013472 U CN 203013472U
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- Prior art keywords
- direct current
- current resistance
- lead wire
- structure capable
- split transformer
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Abstract
The utility model discloses a lead wire structure capable of meeting requirements of direct current resistance balance of a split transformer. According to the lead wire structure capable of meeting the requirements of the direct current resistance balance of the split transformer, a new copper bus is lead out on a public copper bus of the connecting tail end x, the connecting tail end y and the connecting tail end z to be used as a neutral point, the direct current resistance of each phase lead wire is changed by means of adjustment of the connection point position of the neutral point copper bus, and therefore the requirements of the three-phase direct current resistance balance can be met. The lead wire structure capable of meeting the requirements of the direct current resistance balance of the split transformer has the advantages of being simple in structure, convenient to adjust, capable of controlling the resistance unbalance rate of lead wire phase direct current resistance of the split transformer to be lower than 2.0%, and beneficial to the standardized design of products and improvement of the technical performance of the products.
Description
Technical field
The utility model relates to the transformer technology field, relates in particular to a kind of pin configuration that satisfies transformer with split winding D.C. resistance balance.
Background technology
D.C. resistance is the simple effective way that comprehensively judges the abnormal or fault of Winding in Power Transformer, and it can reflect and has or not a layer turn-to-turn short circuit, multiply winding in parallel and disconnected strand of lead-out wire, lead-in wire and the faults such as sleeved conducting rod or shunting switch loose contact and whole galvanic circle junction loose contacts in winding.Stipulate in GB/T6451-2008, at 630kVA and above power transformer, its D.C. resistance unbalance factor: phase (when having neutral point to draw) is 2%, and line (when drawing without neutral point) is 1% for capacity.The control of D.C. resistance unbalance factor is relevant with design, technique, pin configuration, lead-in wire material and test etc.Wherein design is than the key link, and during design, imbalance can cause that lead-in wire assembling does over again and go between again customizedly, brings very large loss to producer.The designing and calculating balance, the imbalance that is caused by other reasons all relatively easily solves.Along with the development of electric power system, customer requirements is more and more higher in recent years, and wherein many users propose to explicitly call for to the D.C. resistance unbalance factor.Therefore for the transformer with split winding of traditional structure, its phase D.C. resistance unbalance factor is generally 4%, can't satisfy the relevant criterion requirement, seeks a kind of pin configuration that satisfies transformer with split winding D.C. resistance balance significant.
The utility model content
The utility model purpose is exactly in order to make up the defective of prior art, provide a kind of phase D.C. resistance unbalance factor that can make to be down to below 2.0%, can improve again the pin configuration that satisfies transformer with split winding D.C. resistance balance that standardization of products level is simplified product design.
The utility model is achieved through the following technical solutions:
A kind of pin configuration that satisfies transformer with split winding D.C. resistance balance is newly drawn a copper busbar and is drawn as neutral point on the public copper busbar that connects tail end x, y, z.Change each phase terminal D.C. resistance by regulating neutral point copper bus contact joint position, thereby satisfy the requirement of balance of three-phase direct current resistance.For finding suitable additional lead copper busbar access point, utilize Excel establishment D.C. resistance calculation procedure, with Winding in Power Transformer parameter and lead-in wire parameter input calculation procedure, can be easy to draw access point position.
The utility model has the advantages that: the utility model is simple in structure, and is easy to adjust, and the phase D.C. resistance unbalance factor that transformer with split winding can be gone between is controlled at below 2.0%, is conducive to standardization of products design, is conducive to improve the product technology performance.
Description of drawings
Fig. 1 is traditional division step-down voltage lead wires schematic diagram.
Fig. 2 is division step-down voltage lead wires schematic diagram after improving.
Embodiment
As shown in Figure 2, a kind of pin configuration that satisfies transformer with split winding D.C. resistance balance is newly drawn a copper busbar 1 and is drawn as neutral point on the public copper busbar that connects tail end x, y, z.Change each phase terminal D.C. resistance by regulating neutral point copper bus contact joint position 2, thereby satisfy the requirement of balance of three-phase direct current resistance.
Claims (1)
1. a pin configuration that satisfies transformer with split winding D.C. resistance balance, is characterized in that: newly draw a copper busbar and draw as neutral point on the public copper busbar that connects tail end x, y, z.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689037 CN203013472U (en) | 2012-12-13 | 2012-12-13 | Lead wire structure capable of meeting requirements of direct current resistance balance of split transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220689037 CN203013472U (en) | 2012-12-13 | 2012-12-13 | Lead wire structure capable of meeting requirements of direct current resistance balance of split transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013472U true CN203013472U (en) | 2013-06-19 |
Family
ID=48605039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220689037 Expired - Fee Related CN203013472U (en) | 2012-12-13 | 2012-12-13 | Lead wire structure capable of meeting requirements of direct current resistance balance of split transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203013472U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354156A (en) * | 2013-06-28 | 2013-10-16 | 广东海鸿变压器有限公司 | Lead structure of three-dimensional wound iron core transformer with double split windings |
-
2012
- 2012-12-13 CN CN 201220689037 patent/CN203013472U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354156A (en) * | 2013-06-28 | 2013-10-16 | 广东海鸿变压器有限公司 | Lead structure of three-dimensional wound iron core transformer with double split windings |
| CN103354156B (en) * | 2013-06-28 | 2015-12-16 | 海鸿电气有限公司 | The pin configuration of the two transformer with split winding of a kind of three dimensional wound core |
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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 |
Granted publication date: 20130619 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |