CN101345124A - Oil-immersed power transformer - Google Patents
Oil-immersed power transformer Download PDFInfo
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- CN101345124A CN101345124A CNA2008100252238A CN200810025223A CN101345124A CN 101345124 A CN101345124 A CN 101345124A CN A2008100252238 A CNA2008100252238 A CN A2008100252238A CN 200810025223 A CN200810025223 A CN 200810025223A CN 101345124 A CN101345124 A CN 101345124A
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- transformer
- shunting switch
- oil
- power transformer
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Abstract
The invention relates to an oil-filled power transformer, belonging to the field of transformer technique. The invention improves the existing oil-filled power transformer structure and is mainly characterized in that each phase of winding of a high-voltage winding consists of an upper independent winding and a lower independent winding; the upper winding and the lower winding are separated into two independent 10KV windings by a cross-over block; by changing the high-voltage winding structure, the mechanical and electric performance of the product is not affected, and wiring can be carried out inside an oil tank; the structure of the invention does not affect the mechanical strength and electric performance of the product; furthermore, during the transitional reconstruction from 10KV power network to 20KV power network, the transformer of the invention has a transition effect; primary side voltages of 10KV transformer and 20KV transformer can be freely switched and the secondary side is not affected; compared with 10KV transformer, the power supply capability is increased, the quality of the voltage is ensured, the power energy dissipation of the power network is reduced, the construction expense of the power network is saved, meanwhile, all functions of 20KV transformer are provided, and the distribution of town power network is complied with more.
Description
Technical field
The present invention relates to a kind of oil-immersed power transformer, especially the 20KV oil-immersed power transformer belongs to the transformer technology field.
Background technology
The high pressure winding of existing 10KV, 20KV oil-immersed power transformer is the globality structure.Transmission of 10KV electrical network and limited coverage area, 20KV is a newly-increased voltage in the electrical network, one-time construction electric substation expense is huge, and is very uneconomical.
Summary of the invention
The objective of the invention is the oil-immersed power transformer above shortcomings that adopted in existing 10KV electrical network, the 20KV electrical network, provide primary side voltage freely to switch, secondary side is not affected, compare with existing 10KV power transformer increased power supply capacity, guaranteed quality of voltage, reduced the electric energy loss of electrical network, the construction cost of saving electrical network, also possess simultaneously a kind of oil-immersed power transformer of all functions of 20KV transformer, help meeting the distribution of urban power grid.
The objective of the invention is to be achieved through the following technical solutions, a kind of oil-immersed power transformer, comprise fuel tank, iron core in the fuel tank, iron core is outward low pressure winding, high pressure winding successively, the every phase winding that it is characterized in that described high pressure winding by up and down two independently winding form, separate with cross-over block between the winding up and down, winding is relatively terminal about every phase, the tap lead of winding connects the second layer of shunting switch and the 3rd layer respectively up and down, and the ground floor of shunting switch is used for the in parallel or series connection of two groups of windings up and down.
The width of cloth of each winding is identical to, axial dimension.
The tap lead of winding is four lines up and down, the corresponding respectively second layer and the 3rd layer of formation three gear that connect shunting switch.
In parallel or the series connection of described two groups of windings up and down, when the transformer high-voltage winding is delta connection, wiring on the shunting switch ground floor, lead riser A, the A ' correspondence of winding meet joint A, the A ' of shunting switch ground floor about one phase, one phase is lead-in wire tail X1, joint X1, the X1 ' that X1 ' correspondence connects the shunting switch ground floor of winding up and down, when shunting switch is adjusted to A, A ' time, winding A, X1, A ', X1 ' parallel running, when shunting switch is adjusted to A ', X1, winding A, X1, A ', X1 ' series operation.
The present invention is the improvement to existing oil-immersed power transformer structure, utilizing 20KV just in time is the twice of 10KV voltage, the relation of utilizing the voltage ratio and the number of turn to be directly proportional, be divided into up and down two independently 10KV windings, the centre is an iron core, iron core is outward the low pressure winding successively, the high pressure winding, adopt non-circular structure, by changing the high pressure winding construction, at the machinery that does not influence product, on the basis of electric property, by in the fuel tank internal wiring, this structure can not influence the mechanical strength and the electric property of product, and, play a part to form a connecting link at the 10KV electrical network in 20KV electrical network transition transformation process, 10KV and 20KV primary side voltage can freely switch, secondary side is not affected, comparing with 10KV has increased power supply capacity, guarantee quality of voltage, reduce the electric energy loss of electrical network, save the construction cost of electrical network, also possessed all functions of 20KV transformer simultaneously, meet the distribution of urban power grid more.
Description of drawings
Fig. 1 is the present invention's one phase cross section structure schematic diagram;
Fig. 2 is a high pressure winding construction schematic diagram of the present invention;
Fig. 3 during for three-phase operation of the present invention in the delta connection high pressure winding of a phase state and with the annexation figure of shunting switch;
Among the figure, 1 iron core, 2 low pressure windings, 3 high pressure windings, 4 cross-over blocks, 5 shunting switchs, A, A ' are the lead riser of winding up and down and the corresponding joints of shunting switch, X1, X1 ' are the corresponding joints of winding leads tail and shunting switch up and down, X2, X3, X4, X5 be about the tap lead of winding, X2, X3, X4, X5, X2 ', X3 ', X4 ', X5 ' shunting switch joint.
Embodiment
Further specify the present invention in conjunction with the accompanying drawings and embodiments, as shown in Figure 1 and Figure 2, the present invention is by fuel tank, iron core 1 in the fuel tank, low pressure winding 2, high pressure winding 3, cross-over block 4 and shunting switch 5 constitute, the high pressure winding 3 of every phase by up and down two independently winding forms, separate with cross-over block 4 between the winding up and down, the end of every phase two windings is relative.
As shown in Figure 3, the tap lead of last winding is four lines, and promptly corresponding respectively X2, X3, X4, the X5 that connects the shunting switch second layer of X2, X3, X4, X5 forms three gears; Corresponding respectively X2 ', X3 ', X4 ', X5 ' formation three gears that connect the 3rd layer of shunting switch of tap lead X2, the X3 of following winding, X4, X5.
Claims (4)
1, a kind of oil-immersed power transformer, comprise fuel tank, iron core in the fuel tank, iron core is outward low pressure winding, high pressure winding successively, the every phase winding that it is characterized in that described high pressure winding by up and down two independently winding forms, separate with cross-over block between the winding up and down, every phase is winding terminal relative up and down, the tap lead of winding connects the second layer of shunting switch and the 3rd layer respectively up and down, and the ground floor of shunting switch is used for two groups of in parallel or series connection of winding up and down.
2, oil-immersed power transformer according to claim 1, the width of cloth that it is characterized in that each winding is identical to, axial dimension.
3, oil-immersed power transformer according to claim 1 is characterized in that the tap lead of winding is four lines up and down, the corresponding respectively second layer and the 3rd layer of formation three gear that connect shunting switch.
4, oil-immersed power transformer according to claim 1, it is characterized in that the in parallel or series connection of described two groups of windings up and down, when the transformer high-voltage winding is delta connection, wiring on the shunting switch ground floor, one phase is the lead riser A of winding up and down, A ' correspondence meets the joint A of shunting switch ground floor, A ', one phase is the lead-in wire tail X1 of winding up and down, X1 ' correspondence meets the joint X1 of shunting switch ground floor, X1 ', when shunting switch is adjusted to A, A ' time, winding A, X1, A ', X1 ' parallel running, shunting switch is adjusted to A ', during X1, winding A, X1, A ', X1 ' series operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100252238A CN101345124A (en) | 2008-04-29 | 2008-04-29 | Oil-immersed power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100252238A CN101345124A (en) | 2008-04-29 | 2008-04-29 | Oil-immersed power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101345124A true CN101345124A (en) | 2009-01-14 |
Family
ID=40247097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100252238A Pending CN101345124A (en) | 2008-04-29 | 2008-04-29 | Oil-immersed power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101345124A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214513A (en) * | 2010-04-09 | 2011-10-12 | 江苏伯乐达变压器有限公司 | Dual-voltage transformer |
| CN104777406A (en) * | 2015-02-15 | 2015-07-15 | 广东电网有限责任公司电力科学研究院 | Model coil of interturn insulation test of oil-immersed power transformer and manufacturing method of model coil |
-
2008
- 2008-04-29 CN CNA2008100252238A patent/CN101345124A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214513A (en) * | 2010-04-09 | 2011-10-12 | 江苏伯乐达变压器有限公司 | Dual-voltage transformer |
| CN104777406A (en) * | 2015-02-15 | 2015-07-15 | 广东电网有限责任公司电力科学研究院 | Model coil of interturn insulation test of oil-immersed power transformer and manufacturing method of model coil |
| CN104777406B (en) * | 2015-02-15 | 2017-06-16 | 广东电网有限责任公司电力科学研究院 | Oil-immersed power transformer turn to turn test model coil and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090114 |