CN202473566U - 6kV-10kV dual-voltage conversion input dry type power distribution transformer - Google Patents
6kV-10kV dual-voltage conversion input dry type power distribution transformer Download PDFInfo
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- CN202473566U CN202473566U CN2012201252862U CN201220125286U CN202473566U CN 202473566 U CN202473566 U CN 202473566U CN 2012201252862 U CN2012201252862 U CN 2012201252862U CN 201220125286 U CN201220125286 U CN 201220125286U CN 202473566 U CN202473566 U CN 202473566U
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- 238000006243 chemical reaction Methods 0.000 title abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 239
- 239000004020 conductor Substances 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 5
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Abstract
The utility model relates to a 6kV-10kV dual-voltage conversion input dry type power distribution transformer. The 6kV-10kV dual-voltage conversion input dry type power distribution transformer comprises an iron core, a primary winding and a secondary winding, wherein the primary winding is divided into three phases; the three phases of the primary winding are in angle connection or star connection. The 6kV-10kV dual-voltage conversion input dry type power distribution transformer is characterized in that the primary winding comprises three branch windings which are arranged from top to bottom; and the three branch windings are asymmetrical along the height direction of the winding, i.e., the numbers of turns of the adjacent two branch windings are same, the cross-sectional areas of conductors of the adjacent two branch windings are same, the number of turns of another branch winding is a half of that of the turns of each of the adjacent two branch windings, and the cross-sectional area of a conductor of another branch winding is two times that of the conductors of each of the adjacent two branch windings. The 6kV-10kV dual-voltage conversion input dry type power distribution transformer has the advantages that firstly, the sections of the primary winding are fewer, the process is simple, and the safety and reliability are greatly improved; secondly, the conversion of two voltages is simple and convenient; thirdly, the equipment investment of power-consumption capacity expanding units is reduced and the waste is avoided; and fourthly, with regard to transformer manufacturers, the time is saved, the manufacturing cost is reduced and the universality is improved.
Description
(1) technical field:
The utility model relates to a kind of dry-type distribution transformer, the two voltage transitions input of particularly a kind of 6-10kV level dry-type distribution transformer.
(2) background technology:
At present, the known method for designing of domestic this type of transformer has following several kinds:
1, first kind: it is characterized in that former limit winding is that rated voltage is 6kV when being linked to be " D "; Be that rated voltage is 10.5kV when being linked to be " Y "; Said D connects winding, Y, and to connect winding be to switch through the aerial lug that changes the former limit of three-phase winding.
The shortcoming of this utility model: the former limit of (1) three-phase winding be linked as D when connecing rated voltage be 6kV, be linked as Y when connecing rated voltage be 10.5kV, expect 10kV, demultiplexing requirement changes; When (2) the former limit of three-phase winding is met the Y that changes 10.5kV into and is connect by the D of 6kV; The connection group of distribution transformer has just become " Yyn0 " by " Dyn11 "; And " Dyn11 " method of connecing can suppress high order harmonic component, helps the excision of single-phase grounding fault, can make full use of the capacity of equipment of transformer; Be the connection group that distribution transformer is preferentially selected for use, " Yyn0 " on the contrary then.
2, second kind: it is characterized in that former limit design of Windings is become four sub-windings about winding height center two, two symmetries; Cause the relative connection of the outside line end of coil through change, make that former limit winding can be connected to 6 the non-same period, two kinds of electrical voltage systems of 10kV level receive electricity and keep all identical dry-type distribution transformers of parameter such as its connection set, demultiplexing requirement, output performance.
The shortcoming of this utility model: the former limit high pressure winding of (1) each phase is made up of top-down I, II, III, four sub-windings of IV; Four the whole series connection 10kV of sub-winding level electrical networks receive; Receive with I, two sub-winding series connections of IV 6kV level electrical network after II, two sub-winding parallel connections of III; Cause former limit high pressure winding height to increase, cost increases; (2) former limit high pressure winding hop count is many, and shunting tap is many, and complex process, aerial lug are complicated, and security reliability is poor.
(3) utility model content:
The purpose of the utility model is to provide the two voltage transitions input of a kind of 6-10kV level dry-type distribution transformer, it can be applicable to respectively different 6kV levels or 10kV level electrical network receive electricity or be applicable to 6, two kinds of system voltage conversion of 10kV level but former limit winding construction is asymmetric, technology and outside on line is simple and convenient, cost and security reliability all are superior to prior art.
The technical scheme of the utility model: a kind of dry-type distribution transformer of 6-10kV step voltage conversion input; Form by iron core, former limit winding, secondary winding; Former limit winding has three-phase, connects into corner connection between the winding of the former limit of three-phase or star connects, and it is characterized in that said former limit winding comprises top-down three sub-windings; Said three sub-windings are asymmetric along the winding short transverse; The number of turn of promptly facing two sub-windings mutually is identical, cross-sectional area of conductor is identical, and the number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually, and the cross-sectional area of conductor of another one sub-winding is above-mentioned twice of facing the cross-sectional area of conductor of two sub-windings mutually.
The above-mentioned said number of turn of facing two sub-windings mutually is identical, cross-sectional area of conductor is identical; The number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually; The cross-sectional area of conductor of another one sub-winding be the above-mentioned cross-sectional area of conductor that faces two sub-windings mutually twice for first sub-winding with second the sub-winding number of turn is identical, cross-sectional area of conductor is identical; The number of turn of the 3rd sub-winding is the number of turn half the of first sub-winding or second sub-winding, and the cross-sectional area of conductor of the 3rd sub-winding is the twice of the cross-sectional area of conductor of first sub-winding or second sub-winding.
The above-mentioned said number of turn of facing two sub-windings mutually is identical, cross-sectional area of conductor is identical; The number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually; The cross-sectional area of conductor of another one sub-winding be above-mentioned twice of facing the cross-sectional area of conductor of two sub-windings mutually be second sub-winding with the 3rd the sub-winding number of turn is identical, cross-sectional area of conductor is identical; The number of turn of first sub-winding is the number of turn half the of second sub-winding or the 3rd sub-winding, and the cross-sectional area of conductor of first sub-winding is the twice of the cross-sectional area of conductor of second sub-winding or the 3rd sub-winding.
Three sub-windings of above-mentioned said former limit winding have two kinds of connected modes; Be respectively three sub-windings and all be connected in series according to the sheet that is connected in series or face two sub-windings mutually and be connected in parallel according to the bar that is connected in parallel, two sub-windings of facing mutually after the parallel connection are connected in series according to be connected in series sheet and another one sub-winding.
Above-mentioned said all being connected in series according to the sheet that is connected in series connects the tail head of first sub-winding and the first head of second sub-winding for complying with the sheet that is connected in series respectively; Sheet connects the tail head of second sub-winding and the first head of the 3rd sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, and can provide 10kV level electrical network to receive this moment.
Above-mentionedly saidly face two sub-windings mutually and be connected in parallel according to the bar that is connected in parallel; Two sub-windings of facing mutually after the parallel connection are connected in series to be connected the first head of first sub-winding and the first head of second sub-winding according to the bar that is connected in parallel with the 3rd sub-winding according to the sheet that is connected in series; Bar connects the tail head of first sub-winding and the tail head of second sub-winding according to being connected in parallel; Sheet connects the tail head of second sub-winding and the first head of the 3rd sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, can provide 6kV level electrical network to receive.
Above-mentionedly saidly face two sub-windings mutually and be connected in parallel according to the bar that is connected in parallel; Two sub-windings of facing mutually after the parallel connection are connected in series to be connected the first head of second sub-winding and the first head of the 3rd sub-winding according to the bar that is connected in parallel with the another one sub-winding according to the sheet that is connected in series; Bar connects the tail head of second sub-winding and the tail head of the 3rd sub-winding according to being connected in parallel; Sheet connects the tail head of first sub-winding and the first head of second sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, can provide 6kV level electrical network to receive.
The operation principle of the utility model: the former limit winding of each phase of the utility model is made up of top-down three asymmetrical sub-windings; Cause the relative connection of the outside line end of coil through change, make that former limit winding can be connected to 6 the non-same period, two kinds of electrical voltage systems of 10kV level receive electricity and keep its parameters such as " rated voltage, connection set, demultiplexing requirement, output performances " all identical.
The superiority of the utility model: 1, former limit winding hop count is few, in than second kind of background technology, lacks under the situation of 1/3 shunting tap, two coupled in series sheets and two bars that are connected in parallel, and can satisfy two kinds of electrical voltage systems of 6kV and 10kV and receive; Technology is simple; Increase along the face creepage distance, security reliability improves greatly, and outside on line quantity reduces; Cost reduces, and outside on line is succinctly attractive in appearance; 2, two kinds of voltage transitions are simple and convenient, and a transformer can be applicable to respectively that 6kV level or 10kV level electrical network receive electricity, are specially adapted to 6, the occasion of two kinds of system voltage conversion of 10kV level; 3, solved the problem that 6kV need change after the newly-increased distribution transformer of 10kV electric pressure transition period moves to the transitional period completion; Greatly reduce the equipment investment of electricity consumption increase-volume unit, the waste of the 6kV level distribution transformer that changes after having avoided the transitional period to accomplish; 4, for transformer production producer, need not remake the drawing that the 6kV level is led change, and reduce raw-material kind, practiced thrift the time, reduced manufacturing cost, improved the versatility of separate unit product.
(4) description of drawings:
Fig. 1 is 10kV level input dry-type distribution transformer contour structures sketch map;
Fig. 2 is 6kV level input dry-type distribution transformer contour structures sketch map;
Fig. 3 is the former limit of 10kV level input dry-type distribution transformer winding connection schematic diagram;
Fig. 4 is the former limit of 6kV level input dry-type distribution transformer winding connection schematic diagram;
Wherein, 1 is unshakable in one's determination, and 2 is former limit winding, and 2-I is first sub-winding; 2-II is second sub-winding, and 2-III is the 3rd sub-winding, and 3 are the sheet that is connected in series, and 4 are the bar that is connected in parallel; A is the first head of first sub-winding, and X1 is the tail head of first sub-winding, and A2 is the first head of second sub-winding; X2 is the tail head of second sub-winding, and A3 is the first head of the 3rd sub-winding 3, and X is the tail head of the 3rd sub-winding.
(5) embodiment:
Embodiment: the two voltage transitions input of a kind of 6-10kV level dry-type distribution transformer (seeing Fig. 1-2); Form by iron core 1, former limit winding 2, secondary winding; Former limit winding 2 has three-phase; Connect into corner connection between the winding of the former limit of three-phase; It is characterized in that said former limit winding 2 comprises top-down three sub-windings, said three sub-windings are asymmetric along the winding short transverse, promptly first sub-winding 2-I with second the sub-winding 2-II number of turn is identical, cross-sectional area of conductor is identical; The number of turn of the 3rd sub-winding 2-III is the number of turn half the of first sub-winding 2-I or second sub-winding 2-II, and the cross-sectional area of conductor of the 3rd sub-winding 2-III is the twice of the cross-sectional area of conductor of first sub-winding 2-I or second sub-winding 2-II.
Three sub-windings of above-mentioned said former limit winding 2 have two kinds of connected modes (seeing Fig. 3-4); Be respectively three sub-windings according to being connected in series that sheet 3 all is connected in series or first sub-winding 2-I, second sub-winding 2-II are connected in parallel according to the bar 4 that is connected in parallel, first sub-winding 2-I after the parallel connection and second sub-winding 2-II are connected in series according to be connected in series sheet 3 and the 3rd sub-winding 2-III.
Above-mentioned said three sub-windings all are connected in series (see figure 1) for connecting the tail head X1 of first sub-winding and first A2 of second sub-winding according to the sheet 3 that is connected in series respectively according to the sheet 3 that is connected in series; Sheet 3 connects the tail head X2 of second sub-winding and first A3 of the 3rd sub-winding according to being connected in series; First the A of first sub-winding and the tail head X of the 3rd sub-winding are connected into electrical network respectively, can provide 10kV level electrical network to receive.
Above-mentioned said first sub-winding 2-I, second sub-winding 2-II are connected in parallel according to the bar 4 that is connected in parallel; First sub-winding 2-I after the parallel connection is connected in series (see figure 2) for according to be connected in parallel bar 4 be connected first A of first sub-winding and first A2 of second sub-winding according to the sheet 3 that is connected in series with the 3rd sub-winding 2-III with second sub-winding 2-II; Bar connects the tail head X1 of first sub-winding and the tail head X2 of second sub-winding according to being connected in parallel; Sheet connects the tail head X2 of second sub-winding and first A3 of the 3rd sub-winding according to being connected in series; First the A of first sub-winding and the tail head X of the 3rd sub-winding are connected into electrical network respectively, can provide 6kV level electrical network to receive.
Claims (7)
1. the two voltage transitions of 6-10kV level are imported dry-type distribution transformer; Form by iron core, former limit winding, secondary winding; Former limit winding has three-phase, connects into corner connection between the winding of the former limit of three-phase or star connects, and it is characterized in that said former limit winding comprises top-down three sub-windings; Said three sub-windings are asymmetric along the winding short transverse; The number of turn of promptly facing two sub-windings mutually is identical, cross-sectional area of conductor is identical, and the number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually, and the cross-sectional area of conductor of another one sub-winding is above-mentioned twice of facing the cross-sectional area of conductor of two sub-windings mutually.
2. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 1 dry-type distribution transformer; It is characterized in that the said number of turn of facing two sub-windings mutually is identical, cross-sectional area of conductor is identical; The number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually; The cross-sectional area of conductor of another one sub-winding be the above-mentioned cross-sectional area of conductor that faces two sub-windings mutually twice for first sub-winding with second the sub-winding number of turn is identical, cross-sectional area of conductor is identical; The number of turn of the 3rd sub-winding is the number of turn half the of first sub-winding or second sub-winding, and the cross-sectional area of conductor of the 3rd sub-winding is the twice of the cross-sectional area of conductor of first sub-winding or second sub-winding.
3. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 1 dry-type distribution transformer; It is characterized in that the said number of turn of facing two sub-windings mutually is identical, cross-sectional area of conductor is identical; The number of turn of another one sub-winding is the half the of the above-mentioned number of turn of facing two sub-windings mutually; The cross-sectional area of conductor of another one sub-winding be above-mentioned twice of facing the cross-sectional area of conductor of two sub-windings mutually be second sub-winding with the 3rd the sub-winding number of turn is identical, cross-sectional area of conductor is identical; The number of turn of first sub-winding is the number of turn half the of second sub-winding or the 3rd sub-winding, and the cross-sectional area of conductor of first sub-winding is the twice of the cross-sectional area of conductor of second sub-winding or the 3rd sub-winding.
4. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 1 dry-type distribution transformer; Three sub-windings that it is characterized in that said former limit winding have two kinds of connected modes; Be respectively three sub-windings and all be connected in series according to the sheet that is connected in series or face two sub-windings mutually and be connected in parallel according to the bar that is connected in parallel, two sub-windings of facing mutually after the parallel connection are connected in series according to be connected in series sheet and another one sub-winding.
5. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 4 dry-type distribution transformer; It is characterized in that said all being connected in series according to the sheet that is connected in series connects the tail head of first sub-winding and the first head of second sub-winding for complying with the sheet that is connected in series respectively; Sheet connects the tail head of second sub-winding and the first head of the 3rd sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, and can provide 10kV level electrical network to receive this moment.
6. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 4 dry-type distribution transformer; It is characterized in that saidly facing two sub-windings mutually and being connected in parallel according to the bar that is connected in parallel; Two sub-windings of facing mutually after the parallel connection are connected in series to be connected the first head of first sub-winding and the first head of second sub-winding according to the bar that is connected in parallel with the 3rd sub-winding according to the sheet that is connected in series; Bar connects the tail head of first sub-winding and the tail head of second sub-winding according to being connected in parallel; Sheet connects the tail head of second sub-winding and the first head of the 3rd sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, can provide 6kV level electrical network to receive.
7. according to the two voltage transitions input of the said a kind of 6-10kV level of claim 4 dry-type distribution transformer; It is characterized in that saidly facing two sub-windings mutually and being connected in parallel according to the bar that is connected in parallel; Two sub-windings of facing mutually after the parallel connection are connected in series to be connected the first head of second sub-winding and the first head of the 3rd sub-winding according to the bar that is connected in parallel with the another one sub-winding according to the sheet that is connected in series; Bar connects the tail head of second sub-winding and the tail head of the 3rd sub-winding according to being connected in parallel; Sheet connects the tail head of first sub-winding and the first head of second sub-winding according to being connected in series; The first head of first sub-winding and the tail head of the 3rd sub-winding are connected into electrical network respectively, can provide 6kV level electrical network to receive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201252862U CN202473566U (en) | 2012-03-29 | 2012-03-29 | 6kV-10kV dual-voltage conversion input dry type power distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201252862U CN202473566U (en) | 2012-03-29 | 2012-03-29 | 6kV-10kV dual-voltage conversion input dry type power distribution transformer |
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| Publication Number | Publication Date |
|---|---|
| CN202473566U true CN202473566U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201252862U Expired - Fee Related CN202473566U (en) | 2012-03-29 | 2012-03-29 | 6kV-10kV dual-voltage conversion input dry type power distribution transformer |
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| Country | Link |
|---|---|
| CN (1) | CN202473566U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680878A (en) * | 2013-12-30 | 2014-03-26 | 国能子金电器(苏州)有限公司 | 20kV and 35kV high-voltage dual-voltage transformer |
| CN107123529A (en) * | 2017-06-06 | 2017-09-01 | 徐州海伦哲专用车辆股份有限公司 | A kind of case becomes the transformer and its application method of automobile-used changeable group |
-
2012
- 2012-03-29 CN CN2012201252862U patent/CN202473566U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680878A (en) * | 2013-12-30 | 2014-03-26 | 国能子金电器(苏州)有限公司 | 20kV and 35kV high-voltage dual-voltage transformer |
| CN107123529A (en) * | 2017-06-06 | 2017-09-01 | 徐州海伦哲专用车辆股份有限公司 | A kind of case becomes the transformer and its application method of automobile-used changeable group |
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| 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: 20121003 Termination date: 20190329 |