CN2073152U - High voltage winding inner shielding structure of transformer - Google Patents
High voltage winding inner shielding structure of transformer Download PDFInfo
- Publication number
- CN2073152U CN2073152U CN 90210386 CN90210386U CN2073152U CN 2073152 U CN2073152 U CN 2073152U CN 90210386 CN90210386 CN 90210386 CN 90210386 U CN90210386 U CN 90210386U CN 2073152 U CN2073152 U CN 2073152U
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- CN
- China
- Prior art keywords
- line
- section
- screen
- link
- wire turn
- 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.)
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model relates to an inner screen structure of high voltage winding of a transformer, which is composed of working wire turns, and additional screening wire turns. The whole winding can adopt the mode of partition compensation, the distribution of impact electric position is uniform, the gradient voltage of oil clearance and the intersegmental composite field intensity are lowered, and the axial height of the winding is reduced. The whole winding is divided into four regions; the first region has the sections which are from 1 to 12, and is composed of the working wire turns and the screening wire turns. The second region has the sections which are from 1 to 12, and is composed of the working wire turns and the screening wire turns. The third region has the sections which are from 25 to 30, and is made of the working wire turns and the screening wire turns. The fourth section has the sections which are 31 to P, and is made of the working wire turns and the screening wire turns.
Description
The utility model is a kind of transformer high voltage winding construction, is applicable to 110KV, 220KV pie winding transformer.
At present, traditional 110KV, 220KV transformer high-voltage winding adopt the middle part outlet to be entangled with formula structure, particularly on-load tap-changing transformer mostly, and its pressure regulation winding is forced to be divided into two windings that independently roll, as shown in Figure 1.Because the pressure regulation winding in the outside, makes the 220KV leading-out terminal complicated unusually, need many molded parts, insulated support has increased cost of goods manufactured.When capacity hour, (63000KVA and following), winding is changed by the end outlet by the middle part outlet, at this moment, the solid wire coiling can only coiled is general be entangled, as shown in Figure 2, yet, this structure, because vertically the capacitance compensation deficiency under the effect of lightning impulse overvoltage, makes and impacts the electrical oscillation skewness, cause intersegmental oil clearance gradient to increase, the serious consequence that compound field intensity increases.
The purpose of this utility model provides a kind of inner shield winding, the winding construction of high pressure winding overhang outlet.Adopt this structure, can reduce volume of transformer and weight, reduce cost.
The utility model is realized with following technical scheme: the high pressure winding is changed by the end outlet, as shown in Figure 3 by the outlet of former middle part.The high pressure winding changes into inner screen continuous by the original formula of being entangled with and carries out the subregion compensation, and as shown in Figure 4: this structure is made up of work wire turn N and screening turn M.It is to increase the vertical capacitance of winding head end by the coupling potential between screen line M and the work wire turn N, and screening turn M does not participate in the operate as normal of transformer, the operating current of yet not flowing through.But under the overvoltage effect, it has certain induced electricity place value, and how many cross-over connections that utilizes the screen line to determine oil clearance gradient voltage and oil clearance size between winding segments apart from size and every section screen number of wire turns.Whole winding is divided into 4 zones.First zone is that the 1-12 section is for striding screen in 6 sections, 1-8 section, every section shielding 3 circles, every section shielding of 9-12 section 2 circles.The screen wire turn is around between the two work wire turns.Second zone is that the 13-24 section is for striding screen in 4 sections, every section shielding 2 circles.The 3rd zone is that the 25-30 section is for striding screen in 2 sections, every section shielding 1 circle.The 4th zone is that the 31-P section is a continous way work wire turn, do not have the screen wire turn.Whole winding progressively increases two vertical capacitances of cake by end to head end.So that reduce head end vibration potential and oil clearance gradient voltage.
The utlity model has simple in structure, easily manufactured, work wire turn solderless point, processing performance is good, economical with materials reduces cost, the electric property reliable characteristics.
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is traditional transformer winding construction figure.
Fig. 2 is the common formula structure chart of being entangled with.
Fig. 3 is the winding construction figure of the utility model high pressure winding overhang outlet.
Fig. 4 is the utility model high voltage winding inner shield continous way structure chart.
Fig. 3-the 4th, specific embodiment of the utility model.The high pressure winding is changed by the end outlet by the middle part outlet.And adopt inner shield continous way structure, whole winding is divided 4 zones.
First zone is the 1-12 section, is by work wire turn (N
1, N
2Nn) and the screen wire turn form.The 1-8 section, every section screen 3 circles, (M
1, M
2, M
3) the 9-12 section, every section screen 2 circle (M
1, M
2).
Second sector number is the 13-24 section, is by work circle (N
1, N
2, N
3Nn) and screen line (M
1, M
2) form.
The 3rd sector number is the 25-30 section, is by work circle (N
1, N
2... Nn) and screen line (M
1) form.
The 4th sector number is the 31-P section, is by work wire turn (N
1, N
2Nn) form.
Shield line M with the 1st section during coiling
1, M
2, M
3Respectively around the 1st section winding outside work wire turn N
1, N
2, N
3, N
4Between, and by the screen line M ' in screen line line E and the 6th section
1, M '
2, M '
3Be connected.The 2nd section screen line M
1, M
2, M
3An end and the 1st section work circle N
1Link to each other, and the other end is clipped in the 2nd section work wire turn N
3, N
4Between, its termination holds insulation.The 3rd section screen line M
1, M
2, M
3By line E and the 8th section screen line M '
1, M '
2, M '
3Link to each other.The 4th section screen line M
1, M
2, M
3Link to each other with the line Q of the 2nd, 3 section work wire turn by line E.The 5th section screen line M
1, M
2, M
3By line E and the 10th section screen line M '
1, M '
2Link to each other.The 7th section screen line M
1, M
2, M
3By line E and the 12nd section screen line M '
1, M '
2Link to each other.The 9th section screen line M
1, M
2By line E and the 14th section screen line M '
1, M '
2Link to each other.The 11st section screen line M
1, M
2Link to each other with the 12nd, 13 section active line linkage line Q by line E.The 13rd section screen line M
1, M
2By line E and the 16th section screen line M
1, M
2Link to each other.The 15th section screen line M
1, M
2By line E and the 18th section screen line M '
1, M '
2Link to each other.The 17th section screen line M, M link to each other with the 20th section screen line M, M by line E.The 19th section screen line M
1, M
2By line E and the 22nd section screen line M '
1, M '
2Link to each other.The 21st section screen line M
1, M
2With the 24th section screen line M '
1, M '
2Link to each other.The 25th section screen line M
1By line E and the 26th section screen line M '
1Link to each other the 27th section screen line M
1With the 28th section screen line M '
1Link to each other.The 29th section screen line M
1With the 30th section screen line M '
1Link to each other.The 31st section-the P section, unshielded wire turn.Fully by work wire turn N
1, N
2Nn forms.Its active line linkage continues coiling.
The utility model is compared with traditional winding has following advantage:
1, winding is changed by the end outlet by the middle part outlet, makes hop count increase by one times, so turn-to-turn work field intensity diminishes;
2, winding changes into inner screen continuous by the original formula of being entangled with, the cross-over connection distance of shielding line insertion wire turn is the decisive factor of turn-to-turn gradient, and distance is more big, and it is also big with the gradient voltage of the active line turn-to-turn of vicinity, its equivalent capacitance also increases, and has improved the impact Potential distribution.
3, because whole winding has adopted the subregion collocation structure, to oil clearance gradient and intersegmental compound field intensity are significantly descended;
4, whole winding work wire turn solderless point rolls conveniently, and processing performance is good, has improved operating efficiency;
5, because the high pressure winding changes by the end outlet, will not be divided into upper and lower two the middle pad of part insulated rings by the pressure regulation winding, and the pressure regulation winding is rolled into cylinder mode, economical with materials reduces cost.
Claims (1)
1, a kind of transformer high voltage winding inner shield continous way structure, it is characterized in that: the high pressure winding is the inner shield continous way, and the end outlet, whole winding is divided into four zones: the first area is the 1-12 section, is by work wire turn (N
1, N
2, N
3... N
n) and screen wire turn composition, 1-8 section, every section screen 3 circle (M
1, M
2, M
3) the 9-12 section, every section screen 2 circle (M
1, M
2), second sector number is the 13-24 section, is by work wire turn (N
1, N
2, N
3N
n) and screen wire turn (M
1, M
2) form, the 3rd sector number is the 25-30 section, is by work wire turn (N
1, N
2, N
3N
n) and screen wire turn M1 composition, the 4th sector number is the 31-P section, is by work wire turn (N
1, N
2, N
3N
n) form, during coiling, with the 1st section screen line M
1, M
2, M
3Respectively around the 1st section winding outside work wire turn N
1, N
2, N
3, N
4Between, and by the screen line M in line E and the 6th section
1', M
2', M
3' be connected the 2nd section screen line M
1, M
2, M
3An end and the 1st section work wire turn N
1Link to each other, and the other end is clipped in the 2nd section active line N
3, N
4Between, its termination holds insulation, the 3rd section screen line M
1, M
2, M
3By line E and the 8th section screen line M
1', M
2', M
3', link to each other the 4th section screen line M
1, M
2, M
3Link to each other the 5th section screen line M with the line Q of the 2nd, 3 section work wire turn by line E
1, M
2, M
3By line E and the 10th section screen line M
1', M
2' link to each other the 7th section screen line M
1, M
2, M
3By line E and the 12nd section screen line M
1', M
2' link to each other the 9th section screen line M
1, M
2By line E and the 14th section screen line M
1', M
2' link to each other the 11st section screen line M
1, M
2Link to each other the 13rd section screen line M with the 12nd, 13 section active line linkage line Q by line E
1, M
2By line E and the 16th section screen line M
1', M
2' link to each other the 15th section screen line M
1, M
2By line E and the 18th section screen line M
1', M
2' link to each other the 19th section screen line M
1, M
2By line E and the 22nd section screen line M
1', M
2' link to each other the 21st section screen line M
1, M
2By line E and the 24th section screen line M
1', M
2' link to each other the 25th section screen line M
1By line E and 26 sections screen line M
1' link to each other the 27th section screen line M
1By line E and the 28th section screen line M
1' link to each other the 29th section screen line M
1By line E and the 30th section screen line M
1' linking to each other, the 31st section-P section does not have the screen wire turn, is made up of the work wire turn, and its active line linkage continues coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210386 CN2073152U (en) | 1990-04-13 | 1990-04-13 | High voltage winding inner shielding structure of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210386 CN2073152U (en) | 1990-04-13 | 1990-04-13 | High voltage winding inner shielding structure of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2073152U true CN2073152U (en) | 1991-03-13 |
Family
ID=4890299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90210386 Withdrawn CN2073152U (en) | 1990-04-13 | 1990-04-13 | High voltage winding inner shielding structure of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2073152U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443861B (en) * | 2006-05-19 | 2011-09-28 | Abb技术有限公司 | Shield for reactor |
| CN105185534A (en) * | 2014-06-18 | 2015-12-23 | 株式会社东芝 | Static induction electric apparatus |
| CN111128543A (en) * | 2019-12-24 | 2020-05-08 | 保定天威保变电气股份有限公司 | Winding method of continuous winding of span-type inserted shielding wire of flexible-direct transformer |
-
1990
- 1990-04-13 CN CN 90210386 patent/CN2073152U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443861B (en) * | 2006-05-19 | 2011-09-28 | Abb技术有限公司 | Shield for reactor |
| CN105185534A (en) * | 2014-06-18 | 2015-12-23 | 株式会社东芝 | Static induction electric apparatus |
| CN111128543A (en) * | 2019-12-24 | 2020-05-08 | 保定天威保变电气股份有限公司 | Winding method of continuous winding of span-type inserted shielding wire of flexible-direct transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |