CN201392715Y - Three-column type amorphous alloy dry-type grounding transformer - Google Patents
Three-column type amorphous alloy dry-type grounding transformer Download PDFInfo
- Publication number
- CN201392715Y CN201392715Y CN200920069031U CN200920069031U CN201392715Y CN 201392715 Y CN201392715 Y CN 201392715Y CN 200920069031 U CN200920069031 U CN 200920069031U CN 200920069031 U CN200920069031 U CN 200920069031U CN 201392715 Y CN201392715 Y CN 201392715Y
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- Prior art keywords
- grounding transformer
- amorphous alloy
- iron core
- type
- alloy dry
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- 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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- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000004804 winding Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 description 11
- 230000001629 suppression Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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Abstract
A three-column type amorphous alloy dry-type grounding transformer in the technical field of a power system comprises a grounding transformer frame, an iron core, insulation cylinders, high voltage coils, a winding connection lead, a device body cushion block and a pressure nail, wherein three high voltage coils and three insulation cylinders are sheathed on the iron core in sequence from the outside to the inside, the high voltage coils are connected through the winding connection lead, and the upper ends and the lower ends of the high voltage coils are fixedly arranged on the grounding transformer frame through the device body cushion block and the pressure nail. The three-column type amorphous alloy dry-type grounding transformer adopts a rectangular amorphous alloy iron core and a high voltage winding with a sectional type rectangular structure, greatly reduces the no-load loss of the product, improves the work efficiency of the product, and saves the energy consumption.
Description
Technical field
The utility model relates to a kind of device of technical field of power systems, specifically is a kind of three pillar type amorphous alloy dry-type grounding transformer.
Background technology
Grounding transformer, claim the neutral point coupler again, generally be used for the electric power system of the medium voltage network of resonance grounding and low resistance grounding, when the main transformer winding connecting mode of central piezoelectricity net is " D " connection, but system does not have the neutral point of ground connection, need to adopt grounding transformer (neutral point coupler), for system provide can ground connection neutral point, carry out ground connection through arc suppression coil or small resistor.When a certain when occurring the shorted to earth fault mutually in the three phase and symmetric power system, the line voltage that grounding transformer (neutral point coupler) primary side bears is asymmetric, produce equal and opposite in direction by the residual voltage that the asymmetric voltage of three-phase decomposes out at the first siding ring of grounding transformer (neutral point coupler) this moment, the zero-sequence current that phase place is identical, three-phase zero-sequence current converge after arc suppression coil or resistance flow to earth point.But be in the three-phase symmetry status during grounding transformer (neutral point coupler) hanging net operation for a long time, mode with common transformer no-load running is the same, main power consumption is the no-load loss of grounding transformer (neutral point coupler), the material that present most grounding transformer (neutral point coupler) iron core adopts is the ordinary silicon steel disc, because the power consumption that the long-term no-load loss of grounding transformer (neutral point coupler) causes still is appreciable.
Find through retrieval prior art, number of patent application 200520026948.0, Granted publication CN2821819Y, put down in writing a kind of " insulation resin amorphous alloy dry-type grounding transformer ", included framework, be arranged on the low pressure outlet copper bar that links to each other with low-voltage coil, the high pressure leading-out terminal that links to each other with high-tension coil and high-voltage outlet terminal and the high-voltage terminal head and the zero line in the framework outside.Described high-tension coil winding is a segmented square coil winding construction, and each winding of every phase is shaped with resin-cast; Described iron core is the amorphous rectangle iron core; Described low-voltage coil is the matrix loop structure of copper coiling; Described high-tension coil winding is divided into more than 3 sections.But the prior art core structure is four frame pentastyles, and iron core is that four frame pentastyle structural iron yoke fluxs are magnetic fluxs in the iron core column
And iron yoke sectional area is 1/2 of a stem, and the amorphous alloy iron core stock utilization is not high; And adopt the pentastyle iron core, the zero sequence impedance of grounding transformer (neutral point coupler) is bigger than normal, influences exerting oneself of arc suppression coil in the resonant earthed system.
The utility model content
The utility model provides a kind of three pillar type amorphous alloy dry-type grounding transformer at the prior art above shortcomings, adopts the amorphous alloy material iron core of three-frame and three pole structure, energy consumption and zero sequence impedance when effectively reducing long-term no-load running.
The utility model is achieved through the following technical solutions, the utility model comprises: grounding transformer framework, iron core, insulating cylinder, high-tension coil, winding connect lead-in wire, device body cushion block and press nail, wherein: three high-tension coils, three insulating cylinders are socketed on iron core successively from outside to inside, connect lead-in wire by winding between the high-tension coil and link to each other, the top and bottom of high-tension coil are by device body cushion block and press nail to be fixedly set in the grounding transformer framework.
Described iron core is that three-frame and three pole structure amorphous alloy material is made, and the cross section of this iron core is a rectangular configuration.
Described high-tension coil is the coil of segmented rectangular configuration, and each high-tension coil is the poured with epoxy resin moulding.
Described grounding transformer framework is that the steel plate bending forms.
The utility model adopts the amorphous alloy iron core of rectangle and the high pressure winding of segmented rectangular configuration, greatly reduces product no-load loss, has improved the operating efficiency of product, energy efficient.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the iron core schematic diagram;
Fig. 3 is the high-tension coil profile.
Embodiment
Below embodiment of the present utility model is elaborated: present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
As Fig. 1, Fig. 2 and shown in Figure 3, present embodiment comprises: grounding transformer framework 1, iron core 2, insulating cylinder 3, high-tension coil 4, footing 5, high-voltage outlet terminal 6, winding connects lead-in wire 7, device body cushion block 8 and pressure nail 9, wherein: three high-tension coils 4, three insulating cylinders 3 are socketed on iron core 2 successively from outside to inside, connecting lead-in wire 7 by winding between the high-tension coil 4 links to each other, the top and bottom of high-tension coil 4 are by device body cushion block 8 and press nail 9 to be fixedly set on the grounding transformer framework 1, footing 5 is fixedly set in the bottom of grounding transformer framework 1, and high-tension coil 4 terminal 6 occurs by high pressure and is connected lead-in wire 7 with winding and connects with the ZN connection.
As Fig. 2, shown in Figure 3, described iron core 2 is the three-frame and three pole structure, and each post is set with an insulating cylinder 3 and a high-tension coil 4.
Described insulating cylinder 3 is a rectangular configuration, is used to make that the electric field between iron core 2 and the high-tension coil 4 evenly distributes.
As Fig. 1, shown in Figure 3, described high-tension coil 4 is a rectangle inner-outer coil structure, and high-tension coil 4 is whole use the poured with epoxy resin moulding, and high-tension coil 4 upper and lower end parts are followed closely 9 by device body cushion block 8 and pressure and linked to each other with grounding transformer framework 1, compress at axial direction.
Claims (6)
1, a kind of three pillar type amorphous alloy dry-type grounding transformer, it is characterized in that, comprise: grounding transformer framework, iron core, insulating cylinder, high-tension coil, winding connect lead-in wire, device body cushion block and press nail, wherein: three high-tension coils, three insulating cylinders are socketed on iron core successively from outside to inside, connect lead-in wire by winding between the high-tension coil and link to each other, the top and bottom of high-tension coil are by device body cushion block and press nail to be fixedly set in the grounding transformer framework.
2, three pillar type amorphous alloy dry-type grounding transformer according to claim 1 is characterized in that, described iron core is the three-frame and three pole structure, and the cross section of this iron core is a rectangular configuration.
3, three pillar type amorphous alloy dry-type grounding transformer according to claim 1 is characterized in that, described high-tension coil is the coil of segmented rectangular configuration.
4, three pillar type amorphous alloy dry-type grounding transformer according to claim 1 is characterized in that, described grounding transformer framework is that the steel plate bending forms.
5, three pillar type amorphous alloy dry-type grounding transformer according to claim 1 is characterized in that, high-tension coil by high pressure occur terminal be connected with winding the lead-in wire connect with the ZN connection.
6, three pillar type amorphous alloy dry-type grounding transformer according to claim 1 is characterized in that, described insulating cylinder is a rectangular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920069031U CN201392715Y (en) | 2009-03-19 | 2009-03-19 | Three-column type amorphous alloy dry-type grounding transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920069031U CN201392715Y (en) | 2009-03-19 | 2009-03-19 | Three-column type amorphous alloy dry-type grounding transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201392715Y true CN201392715Y (en) | 2010-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920069031U Expired - Lifetime CN201392715Y (en) | 2009-03-19 | 2009-03-19 | Three-column type amorphous alloy dry-type grounding transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201392715Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664091A (en) * | 2012-05-31 | 2012-09-12 | 上海置信电气非晶有限公司 | Framework structure of amorphous alloy transformer |
| CN103779051A (en) * | 2012-10-18 | 2014-05-07 | 特变电工股份有限公司 | Dry type transformer for photovoltaic power generation |
| CN105551776A (en) * | 2016-01-27 | 2016-05-04 | 丹东欣泰电气股份有限公司 | Novel resin cast dry-type grounding transformer |
-
2009
- 2009-03-19 CN CN200920069031U patent/CN201392715Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664091A (en) * | 2012-05-31 | 2012-09-12 | 上海置信电气非晶有限公司 | Framework structure of amorphous alloy transformer |
| CN103779051A (en) * | 2012-10-18 | 2014-05-07 | 特变电工股份有限公司 | Dry type transformer for photovoltaic power generation |
| CN105551776A (en) * | 2016-01-27 | 2016-05-04 | 丹东欣泰电气股份有限公司 | Novel resin cast dry-type grounding transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |