CN202758722U - Three-phase on load tap changing transformer - Google Patents
Three-phase on load tap changing transformer Download PDFInfo
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- CN202758722U CN202758722U CN 201220427754 CN201220427754U CN202758722U CN 202758722 U CN202758722 U CN 202758722U CN 201220427754 CN201220427754 CN 201220427754 CN 201220427754 U CN201220427754 U CN 201220427754U CN 202758722 U CN202758722 U CN 202758722U
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- load tap
- high pressure
- pressure winding
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Abstract
The utility model relates to the technical field of the regulating transformer, and particular to a three-phase on load tap changing transformer. The three-phase on load tap changing transformer comprises a high-voltage winding set, a low-voltage winding set, a regulating winding set and a iron core. The three-phase on load tap changing transformer is characterized in that the iron core is of a three-phase and three-column structure. Five winding sets are sleeved on each column. The iron, the regulating winding set, the low-voltage winding set, the high-voltage winding set, the other low-voltage winding set and the other high-voltage winding set are sleeved on each column from inside to outside in sequence. The high-voltage winding set comprises an upper high-voltage winding set and a low high-voltage winding set, wherein the upper high-voltage winding set and the low high-voltage winding set are arranged in the axial direction. Compared with the prior art, the three-phase on load tap changing transformer has the advantages of being reasonable in structure, stable in performance, low in noise and energy-saving and capable of being applied to a 10 kilovolt power distribution system and a 20 kilovolt power distribution system by the switching of a serial-parallel switch. An on-load tap-changer is used to adjust voltage deviation. The voltage quality is guaranteed and equipment accidents are reduced. The reliability of power supply is improved.
Description
Technical field
The utility model relates to the voltage regulating transformer technical field, specifically a kind of three-phase on-load tap-changing transformer.
Background technology
Along with the construction of national urbanization, power load is in rapid increase, and 1OKV distribution voltage can not satisfy the demand of electricity consumption.And can increase conveying capacity by improving the distribution electric pressure, and enlarging supply district, lower loss improves electric network composition, is one of effective way that improves the quality of power supply, so country begins to promote the 20KV distribution network in recent years.But existing distribution line is 1OKV mostly, and newly-built 20KV distribution network systems has just caused very large waste for the 1OKV distribution network systems.Owing to operational mode in the electric power system is ever-changing, each node voltage is different in addition, and the user is also different to the requirement of voltage.
Summary of the invention
The purpose of this utility model is for overcoming the deficiencies in the prior art, provide a kind of and can be used for the 1OKV distribution system, also can be used for the three-phase on-load tap-changing transformer of 20KV distribution system, and the user can be online to its pressure regulation, can guarantee quality of voltage and reduce equipment breakdown, improve power supply reliability.
In order to achieve the above object, the utility model has designed a kind of three-phase on-load tap-changing transformer, comprise high pressure winding, low pressure winding, pressure regulation winding, iron core, it is characterized in that: described iron core is the three-phase three-limb structure, cover has five windings on every post, from inside to outside be followed successively by iron core, pressure regulation winding, low pressure winding, high pressure winding, another low pressure winding, another pressure regulation winding, described high pressure winding comprises upper high pressure winding and the lower high pressure winding of arranging vertically.
Further, the three-phase of described transformer is provided with series parallel switch and on load tap changer.
Further, the turnover of described upper high pressure winding and lower high pressure winding lead-in wire is connected on the series parallel switch, and the shunting tap of upper high pressure winding and lower high pressure winding is connected on the on load tap changer.
Further, described iron core is formed by stacking by grain-oriented cold-reduced silicon sheet.
The utility model is compared with prior art, and rational in infrastructure, stable performance, noise are low, energy-conservation; Conversion by series parallel switch can be used for the 1OKV distribution system, also can be used for the 20KV distribution system; On load tap changer is used for the Chi line and adjusts voltage deviation, can guarantee quality of voltage and reduce equipment breakdown, improves power supply reliability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is winding Pareto diagram of the present utility model.
Fig. 3 is the vertical view of the utility model three-phase three-limb structure.
Referring to Fig. 1, Fig. 2 and Fig. 3,1 is unshakable in one's determination; 2 are the pressure regulation winding; 3 is the low pressure winding; 4 is the high pressure winding; 5 is another low pressure winding; 6 is another pressure regulation winding; 7 is series parallel switch; 8 is on load tap changer; 41 is upper high pressure winding; 42 is lower high pressure winding.
Embodiment
Such as Fig. 1---shown in Figure 3, the utility model comprises high pressure winding 4, low pressure winding, pressure regulation winding, unshakable in one's determination 1, unshakable in one's determination 1 is the three-phase three-limb structure, cover has five windings on every post, from inside to outside is followed successively by iron core 1, pressure regulation winding 2, low pressure winding 3, high pressure winding 4, another low pressure winding 5, another pressure regulation winding 6; High pressure winding 4 comprises upper high pressure winding 41 and the lower high pressure winding 42 of arranging vertically, the three-phase of transformer is provided with series parallel switch 7 and on load tap changer 8, the turnover lead-in wire of upper high pressure winding 41 and lower high pressure winding 42 is connected on the series parallel switch 7, and the shunting tap of upper high pressure winding 41 and lower high pressure winding 42 is connected on the on load tap changer 8; Described iron core is formed by stacking by grain-oriented cold-reduced silicon sheet, is divided into stem stem, return yoke, upper yoke and four parts of lower yoke, and no-load loss is very low, and performance reaches the level of 27ZHI1O silicon steel sheet, and magnetic is close to be controlled at below the 1.65T, and iron loss is low, and noise is low.
The utility model can be operated in 1OKV or 20KV, satisfies present 1OKV power supply fully, plans the regional demand of 20KV power supply in the future, need not to change transformer or transformer is changed, and transformer of the present utility model is adaptable.
Claims (4)
1. three-phase on-load tap-changing transformer, comprise high pressure winding, low pressure winding, pressure regulation winding, iron core, it is characterized in that: described iron core is the three-phase three-limb structure, cover has five windings on every post, from inside to outside be followed successively by iron core, pressure regulation winding, low pressure winding, high pressure winding, another low pressure winding, another pressure regulation winding, described high pressure winding comprises upper high pressure winding and the lower high pressure winding of arranging vertically.
2. a kind of three-phase on-load tap-changing transformer according to claim 1, it is characterized in that: the three-phase of described transformer is provided with series parallel switch and on load tap changer.
3. a kind of three-phase on-load tap-changing transformer according to claim 1 and 2, it is characterized in that: the turnover lead-in wire of described upper high pressure winding and lower high pressure winding is connected on the series parallel switch, and the shunting tap of upper high pressure winding and lower high pressure winding is connected on the on load tap changer.
4. a kind of three-phase on-load tap-changing transformer according to claim 1, it is characterized in that: described iron core is formed by stacking by grain-oriented cold-reduced silicon sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220427754 CN202758722U (en) | 2012-08-27 | 2012-08-27 | Three-phase on load tap changing transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220427754 CN202758722U (en) | 2012-08-27 | 2012-08-27 | Three-phase on load tap changing transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758722U true CN202758722U (en) | 2013-02-27 |
Family
ID=47737890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220427754 Expired - Fee Related CN202758722U (en) | 2012-08-27 | 2012-08-27 | Three-phase on load tap changing transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680883A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | 500kV-level split on-load voltage regulation power transformer |
-
2012
- 2012-08-27 CN CN 201220427754 patent/CN202758722U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680883A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | 500kV-level split on-load voltage regulation power transformer |
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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: 20130227 Termination date: 20150827 |
|
| EXPY | Termination of patent right or utility model |