CN203351361U - Dual-split epoxy resin insulation dry-type boosting transformer used for wind power and photovoltaic power generation - Google Patents
Dual-split epoxy resin insulation dry-type boosting transformer used for wind power and photovoltaic power generation Download PDFInfo
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- CN203351361U CN203351361U CN 201320435523 CN201320435523U CN203351361U CN 203351361 U CN203351361 U CN 203351361U CN 201320435523 CN201320435523 CN 201320435523 CN 201320435523 U CN201320435523 U CN 201320435523U CN 203351361 U CN203351361 U CN 203351361U
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Abstract
The utility model discloses a dual-split epoxy resin insulation dry-type boosting transformer used for wind power and photovoltaic power generation in the field of transformers. Each group of winding of three-phase windings comprises two groups of high-voltage coils and two groups of low-voltage coils, wherein the two groups of high-voltage coils are arranged vertically on the same axis; the winding directions of the high-voltage coils at the lower part and the high-voltage coils at the lower part are opposite; the approaching ends of the two groups of high-voltage coils in the same winding are in equipotential connection; three groups of high-voltage coils at the upper part are connected in a Y shape; three groups of high-voltage coils at the lower part are also connected in a Y shape; the two groups of low-voltage coils in each winding are also arranged vertically on the same axis; the low-voltages coils are coaxially arranged on the inner sides of the high-voltage coils; three groups of low-voltage coils at the upper part are in delta connection; three groups of low-voltage coils at the lower part are also in delta connection. According to the dual-split epoxy resin insulation dry-type boosting transformer, the short circuit current is small, two paths of input power supplies can be independently connected at the same time, the running of a power grid is safe, and the transformer can be applied to a wind power and photovoltaic power generation system.
Description
Technical field
It is a kind of step-up transformer that the utility model relates to, and particularly wind power plant and the generating of photovoltaic electric field are with boosting grid-connected a kind of dry-type transformer.
Background technology
Along with global energy day by day reduce and the mankind to the consciousness enhancing of environmental protection, the generating cause that wind energy, solar energy be the core energy of take had had the development of advancing by leaps and bounds in recent years, and will become whole world energy supply main body.Wind-force, solar photovoltaic generation system can be divided into two kinds of autonomous system and net systems: autonomous system is mainly used at present without electricity or lacks the outlying district of electric power; The net system is to move with the utility network direct grid-connected.Its weak point is: existing transformer, can not limiting short-circuit current when being short-circuited fault, thereby causes larger fault.
The utility model content
The purpose of this utility model is to provide two splitting ring epoxy resins insulating dry type step-up transformers for a kind of wind-powered electricity generation and photovoltaic generation, can limiting short-circuit current, and can realize that a transformer connects the two-way input voltage simultaneously, and can not produce circulation.
The purpose of this utility model is achieved in that a kind of wind-powered electricity generation and two splitting ring epoxy resins insulating dry type step-up transformers for photovoltaic generation, comprise two upper clamping pieces and two lower clamping pieces, two upper clamping pieces are clamped in iron core top, two lower clamping pieces are clamped in the bottom of iron core, three groups of windings have been installed around on iron core, three groups of windings are set up in parallel, each winding bottom is bearing in lower clamping piece top through the insulation cushion block, described every group of winding comprises two groups of high-tension coils and two groups of low-voltage coils, two groups of high-tension coils are setting up and down on same axis, the top high-tension coil around to the bottom high-tension coil around to contrary, two groups of high-tension coil phase near-end equipotential connections in same winding connect, each organizes Y-shaped connection between superposed three groups of high-tension coils in winding, each organizes also Y-shaped connection between three groups of high-tension coils of bottom in winding, two groups of low-voltage coils in every group of winding are also setting up and down on same axis, and low-voltage coil coaxially is arranged on the inboard of high-tension coil, each organizes connection triangular in shape between superposed three groups of low-voltage coils in winding, and each organizes also connection triangular in shape between three groups of low-voltage coils of bottom in winding.
In the utility model, two groups of high-tension coils are setting up and down on same axis, the top high-tension coil around to the bottom high-tension coil around to contrary, phase proximal head equipotential connection connects between the two, the internal magnetic field produced in iron core also can be cancelled out each other, the middle part lead-in wire voltage difference of two groups of high-tension coils is zero, can greatly reduce insulation distance.Compared with prior art, the effect of the utility model limiting short-circuit current is remarkable, when a branch, short-circuit, short circuit current passes through impedance through more than half, partly pass through impedance and equal high pressure winding and branch's short-circuit impedance sum, equal one and add the bundle factor of 1/4th times, then be multiplied by and pass through impedance.That is to say partly pass through impedance ratio pass through impedance large 1/4th bundle factors doubly pass through impedance, namely large than the short-circuit impedance of common transformer, so short circuit current is little.The utility model can be realized transformer separate connection two-way input power simultaneously, and can not produce circulation, has saved installing space, has reduced cost, has guaranteed the safe operation of electrical network.It can be used in wind-powered electricity generation and photovoltaic generating system.
As further improvement of the utility model, the outlet copper bar of superposed three groups of low-voltage coils is drawn from top one side of iron core, and the outlet copper bar that is positioned at three groups of low-voltage coils of bottom is drawn from the same side of the bottom of iron core.This structure can by the outlet copper bar of low-voltage coil from the same side upper and lower diverse location draw, facilitated wiring.
For further reducing size, two groups of immediate terminations of high-tension coil in every group of winding link together with the high-voltage tap shelves, and described high-voltage tap gear, in low-pressure side, is drawn from the opposite side of low-pressure side with the high-voltage connection that high-voltage tap shelves equipotential is connected.
As further improvement of the utility model, two groups of high-tension coils in described same winding reach outward between the gap of high-tension coil and are cast with epoxy resin.When this structure has guaranteed sudden short circuit, transformer is axial or radial very strong tolerance all arranged.
Reliable for guaranteeing insulation, described high-tension coil and low-voltage coil adopt the coiling of oxygen-free copper flat electromagnetic wire to form, turn insulation is adopted argon amine film double glass fiber, and high-tension coil adopts segmentation multilayer architecture winding, and it is insulating material that the layer insulation of high-tension coil adopts solvent-free grid.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation.
The left view that Fig. 2 is Fig. 1.
The right view that Fig. 3 is Fig. 1.
Fig. 4 is high-tension coil johning knot composition.
Fig. 5 is low-voltage coil johning knot composition.
Wherein, 1 lower clamping piece, 2,7 outlet copper bars, 3 cross-over blocks, 4 high-voltage tap shelves, 5 high-tension coils, 6 iron cores, 8 upper clamping pieces, 9 high-voltage connections, 10 high-pressure connection lines, 11 low-voltage coils.
Embodiment
As Figure 1-5, for wind-powered electricity generation and the two splitting ring epoxy resins insulating dry type step-up transformers of photovoltaic generation, comprise two upper clamping pieces 8 and two lower clamping pieces 1, two upper clamping pieces 8 are clamped in iron core 6 tops, two lower clamping pieces 1 are clamped in the bottom of iron core 6, three groups of windings have been installed around on iron core 6, three groups of windings are set up in parallel, each winding bottom is bearing in lower clamping piece 1 top through insulation cushion block 3, every group of winding comprises two groups of high-tension coils 5 and two groups of low-voltage coils 11, two groups of high-tension coils 5 are setting up and down on same axis, the top high-tension coil around to the bottom high-tension coil around to contrary, the phase near-end equipotential connection of two groups of high-tension coils 5 in same winding connects, each organizes Y-shaped connection between superposed three groups of high-tension coils in winding, each organizes also Y-shaped connection between three groups of high-tension coils of bottom in winding, between the upper end of the three groups of high-tension coils in top, between the lower end of the three groups of high-tension coils in bottom, through high-pressure connection line 10, be connected respectively, two groups of low-voltage coils 11 in every group of winding are also setting up and down on same axis, and low-voltage coil 11 coaxially is arranged on the inboard of high-tension coil 5, each organizes connection triangular in shape between superposed three groups of low-voltage coils in winding, and each organizes also connection triangular in shape between three groups of low-voltage coils of bottom in winding.The outlet copper bar 7 of superposed three groups of low-voltage coils 11 is drawn from top one side of iron core 6, and the outlet copper bar 2 that is positioned at three groups of low-voltage coils 11 of bottom is drawn from the same side of the bottom of iron core 6; Two groups of immediate terminations of high-tension coil in every group of winding link together with high-voltage tap shelves 4, and high-voltage tap shelves 4 are positioned at low-pressure side, with the high-voltage connection 9 that high-voltage tap shelves 4 equipotentials are connected, from the opposite side of low-pressure side, draw.
In Fig. 4, termination X1, the Y1 on high-tension coil top, top, Z1 connect through high-pressure connection line 10 equipotentials; Termination X2, the Y2 of high-tension coil bottom, bottom, Z2 connect through another high-pressure connection line 10 equipotentials; Neighbouring high-tension coil termination links together, and forms Y shape and connects.
In Fig. 5, first place, the upper and lower termination of top low-voltage coil joins, and leaves a1, b1, tri-outlet copper bar joints of c1 in the termination, top; The termination up and down of bottom low-voltage coil is also that first place joins, and in the bottom tip position, leaves a2, b2, tri-outlet copper bar joints of c2.
Be cast with epoxy resin outside two groups of high-tension coils 5 in same winding and between the gap of high-tension coil 5.High-tension coil 5 and low-voltage coil 11 adopt the coiling of oxygen-free copper flat electromagnetic wire to form, and turn insulation is adopted argon amine film double glass fiber, and high-tension coil 5 adopts segmentation multilayer architecture winding, and it is insulating material that the layer insulation of high-tension coil 5 adopts solvent-free grid.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.
Claims (4)
1. two splitting ring epoxy resins insulating dry type step-up transformers for a wind-powered electricity generation and photovoltaic generation, comprise two upper clamping pieces and two lower clamping pieces, two upper clamping pieces are clamped in iron core top, two lower clamping pieces are clamped in the bottom of iron core, three groups of windings have been installed around on iron core, three groups of windings are set up in parallel, each winding bottom is bearing in lower clamping piece top through the insulation cushion block, it is characterized in that: described every group of winding comprises two groups of high-tension coils and two groups of low-voltage coils, two groups of high-tension coils are setting up and down on same axis, the top high-tension coil around to the bottom high-tension coil around to contrary, two groups of high-tension coil phase near-end equipotential connections in same winding connect, each organizes Y-shaped connection between superposed three groups of high-tension coils in winding, each organizes also Y-shaped connection between three groups of high-tension coils of bottom in winding, two groups of low-voltage coils in every group of winding are also setting up and down on same axis, and low-voltage coil coaxially is arranged on the inboard of high-tension coil, each organizes connection triangular in shape between superposed three groups of low-voltage coils in winding, and each organizes also connection triangular in shape between three groups of low-voltage coils of bottom in winding.
2. two splitting ring epoxy resins insulating dry type step-up transformers for wind-powered electricity generation according to claim 1 and photovoltaic generation, it is characterized in that: the outlet copper bar of superposed three groups of low-voltage coils is drawn from top one side of iron core, and the outlet copper bar that is positioned at three groups of low-voltage coils of bottom is drawn from the same side of the bottom of iron core.
3. two splitting ring epoxy resins insulating dry type step-up transformers for wind-powered electricity generation according to claim 2 and photovoltaic generation, it is characterized in that: two groups of immediate terminations of high-tension coil in every group of winding link together with the high-voltage tap shelves, described high-voltage tap gear, in low-pressure side, is drawn from the opposite side of low-pressure side with the high-voltage connection that high-voltage tap shelves equipotential is connected.
4. according to two splitting ring epoxy resins insulating dry type step-up transformers for the described wind-powered electricity generation of claim 1-3 any one and photovoltaic generation, it is characterized in that: two groups of high-tension coils in described same winding reach outward between the gap of high-tension coil and are cast with epoxy resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320435523 CN203351361U (en) | 2013-07-22 | 2013-07-22 | Dual-split epoxy resin insulation dry-type boosting transformer used for wind power and photovoltaic power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320435523 CN203351361U (en) | 2013-07-22 | 2013-07-22 | Dual-split epoxy resin insulation dry-type boosting transformer used for wind power and photovoltaic power generation |
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| CN203351361U true CN203351361U (en) | 2013-12-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337344A (en) * | 2013-07-22 | 2013-10-02 | 扬州华鼎电器有限公司 | Double-split epoxy resin insulation dry type boosting transformer for wind power and photovoltaic power generation |
| WO2016095126A1 (en) * | 2014-12-17 | 2016-06-23 | 特变电工股份有限公司 | Transformer for photovoltaic power generation |
| CN108335887A (en) * | 2018-04-17 | 2018-07-27 | 江苏力阳电器制造有限公司 | Phase shift self coupling zigzag transformer |
| CN111599577A (en) * | 2020-04-26 | 2020-08-28 | 青岛鼎信通讯股份有限公司 | Multi-winding medium-voltage high-frequency transformer applied to power electronic transformer |
| CN113808846A (en) * | 2021-11-02 | 2021-12-17 | 山东电工电气集团智能电气有限公司 | Dry-type transformer coil winding method, dry-type transformer coil and dry-type transformer |
-
2013
- 2013-07-22 CN CN 201320435523 patent/CN203351361U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337344A (en) * | 2013-07-22 | 2013-10-02 | 扬州华鼎电器有限公司 | Double-split epoxy resin insulation dry type boosting transformer for wind power and photovoltaic power generation |
| CN103337344B (en) * | 2013-07-22 | 2017-02-08 | 扬州华鼎电器有限公司 | Double-split epoxy resin insulation dry type boosting transformer for wind power and photovoltaic power generation |
| WO2016095126A1 (en) * | 2014-12-17 | 2016-06-23 | 特变电工股份有限公司 | Transformer for photovoltaic power generation |
| CN107251173A (en) * | 2014-12-17 | 2017-10-13 | 特变电工股份有限公司 | A kind of photovoltaic power generation transformer |
| CN107251173B (en) * | 2014-12-17 | 2019-05-03 | 特变电工股份有限公司 | A kind of photovoltaic power generation transformer |
| CN108335887A (en) * | 2018-04-17 | 2018-07-27 | 江苏力阳电器制造有限公司 | Phase shift self coupling zigzag transformer |
| CN111599577A (en) * | 2020-04-26 | 2020-08-28 | 青岛鼎信通讯股份有限公司 | Multi-winding medium-voltage high-frequency transformer applied to power electronic transformer |
| CN113808846A (en) * | 2021-11-02 | 2021-12-17 | 山东电工电气集团智能电气有限公司 | Dry-type transformer coil winding method, dry-type transformer coil and dry-type 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160722 |