CN114188120B - Filtering reactor for high-power SVG and APF - Google Patents
Filtering reactor for high-power SVG and APF Download PDFInfo
- Publication number
- CN114188120B CN114188120B CN202111398896.XA CN202111398896A CN114188120B CN 114188120 B CN114188120 B CN 114188120B CN 202111398896 A CN202111398896 A CN 202111398896A CN 114188120 B CN114188120 B CN 114188120B
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- copper
- iron core
- copper sheet
- core group
- apf
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Links
- 238000001914 filtration Methods 0.000 title description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 177
- 229910052802 copper Inorganic materials 0.000 claims abstract description 173
- 239000010949 copper Substances 0.000 claims abstract description 173
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000012212 insulator Substances 0.000 claims description 18
- 238000005452 bending Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Abstract
The invention discloses a filter reactor for high-power SVG (static var generator) and APF (active power filter), which comprises a plurality of annular iron cores, a plurality of copper bars and a plurality of copper sheets, wherein the annular iron cores are coaxially arranged, the annular iron cores are arranged along the axial direction of the iron cores to form an iron core group, the copper bars are arranged in holes of the iron core group, the copper sheets are arranged on the outer side of the iron core group, two ends of the copper bars and the copper sheets are alternately connected in sequence, and the unconnected end parts of the first copper bar or copper sheet and the last copper bar or copper sheet are two external wire ends of the reactor. The filter reactor for high-power SVG and APF has the characteristics of easy manufacture, convenient installation, low production cost, small temperature rise and long service life.
Description
Technical Field
The invention relates to a reactor, in particular to a filter reactor for high-power SVG and APF, and belongs to the technical field of SVG and APF.
Background
The low-voltage SVG is used for reactive power control of a low-voltage distribution power grid, so that the electric energy loss of the power grid is reduced, the operation safety and efficiency of the power grid are improved, and the voltage quality of the power grid is improved. The low-voltage APF is used for harmonic treatment of a low-voltage power distribution and consumption power grid, so that harmonic pollution of the power grid is eliminated, and the power quality of the power grid is improved. The low voltage SVG and APF have the same circuit structure, and the written programs are different.
The filter reactor of the important device in SVG, APF belongs to the inductive impedance device, connect in the power supply introduction loop, used for smoothing the high-frequency voltage, electric current.
The existing filter reactor for high-power low-voltage SVG and APF is generally formed by winding copper wires (one or a plurality of) or copper sheets on a small number of circular ring-shaped iron cores, and then connecting a plurality of reactors in parallel or in series to increase power.
Disclosure of Invention
The invention aims to solve the technical problem of providing a filter reactor for high-power SVG and APF, which is convenient to install and good in heat dissipation effect.
In order to solve the technical problems, the invention adopts the following technical scheme:
A filter reactor for high-power SVG, APF, characterized in that: the electric reactor comprises a plurality of annular iron cores, a plurality of copper bars and a plurality of copper sheets, wherein the annular iron cores are coaxially arranged and form an iron core group along the axial direction of the iron core, the copper bars are arranged in holes of the iron core group, the copper sheets are arranged outside the iron core group, the two ends of the copper bars and the copper sheets are sequentially and alternately connected, and the unconnected end parts of the first copper bar or copper sheet and the last copper bar or copper sheet are two external connection ends of the electric reactor.
Further, the number of the annular iron cores is not less than 3, and the number of the copper bars and the copper sheets is not less than 5.
Further, nut holes are formed in the two ends of the copper bar, connecting holes are formed in the two ends of the copper sheet, and connecting screws penetrate through the connecting holes of the end parts of the copper sheet and are locked and fixed in the nut holes of the end parts of the copper bar.
Further, the two end parts of the copper bar are bent towards the outer side of the iron core group, or the two end parts of the copper sheet are bent towards the inner side of the iron core group, or the two end parts of the copper bar and the two end parts of the copper sheet are simultaneously bent towards each other, and the lengths of the bending parts of the copper bar and the copper sheet are matched with the radial thickness of the annular iron core.
Further, the copper bars are arranged along the axial direction of the iron core group and are attached to the inner wall of the iron core group, a plurality of copper bars are distributed at equal intervals along the circumferential direction of the iron core group, the copper sheets are obliquely arranged on the outer side surface of the iron core group, one end of each copper sheet is connected with one end of one copper bar adjacent to the inner side of the iron core group, and the other end of each copper sheet is connected with one end of the other copper bar adjacent to the inner side of the iron core group.
Further, an electrical insulation layer is arranged on the outer surface of the annular iron cores, and a gap of more than 2mm is reserved between two adjacent annular iron cores.
Further, still contain many insulator supports, the quantity and the copper sheet of insulator support are equal, and one side of insulator support is provided with copper sheet support piece, and the opposite side of insulator support is provided with iron core support piece, and open on the copper sheet has the support hole that matches with copper sheet support piece, and copper sheet support piece inlays and establishes in the support downthehole of copper sheet, and iron core support piece card is established between adjacent annular iron core clearance.
Further, the novel copper sheet fixing device further comprises an insulating fixing plate, a fixing hole is formed in the insulating fixing plate, one of the plurality of copper sheets serves as a fixing copper sheet, a riveting nut is fixed on the fixing copper sheet, and a fixing screw penetrates through the fixing hole of the insulating fixing plate and is fastened in the riveting nut of the fixing copper sheet.
Further, the joint of the copper bar and the copper sheet is provided with a bonding condensate, and the bonding condensate is also bonded with the iron core group.
Compared with the prior art, the invention has the following advantages and effects: according to the filter reactor for high-power SVG and AFP, the iron cores are formed by the plurality of annular iron cores at intervals, the gaps are large, and heat dissipation is easy, so that the problem of temperature rise of the reactor can be effectively controlled, and the service life of the filter reactor is prolonged; in addition, the invention adopts the staggered connection copper pipes and copper sheets to replace the traditional copper wire winding mode, the manufacturing is easier, the whole assembly of the reactor is convenient, the production cost is greatly reduced, the production efficiency is improved, and the copper rod and copper sheet combination mode does not need auxiliary structures such as a wire slot of a copper wire winding structure, thereby simplifying the volume of a coil part, further freeing the inner space of an iron core and further improving the heat dissipation effect of the reactor.
Drawings
Fig. 1 is a schematic diagram of a filter reactor for high power SVG, APF of the present invention.
Figure 2 is a schematic view of a copper tube of the present invention.
Fig. 3 is a schematic view of a copper sheet of the present invention.
Fig. 4 is a schematic view of an insulator holder of the present invention.
Fig. 5 is a schematic view of the fixed copper sheet of the present invention.
Detailed Description
In order to explain in detail the technical solutions adopted by the present invention to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that technical means or technical features in the embodiments of the present invention may be replaced without inventive effort, and the present invention will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in fig. 1, the filter reactor for high-power SVG and APF of the present invention includes a plurality of annular cores 1, a plurality of copper bars 2 and a plurality of copper sheets 3, wherein the plurality of annular cores 1 are coaxially arranged and the plurality of annular cores 1 are arranged along the axial direction of the cores to form an iron core group, the plurality of copper bars 2 are arranged in holes of the iron core group, the plurality of copper sheets 3 are arranged at the outer side of the iron core group, two ends of the plurality of copper bars 2 and the plurality of copper sheets 3 are alternately connected in sequence, and the unconnected ends of the first copper bar or copper sheet and the last copper bar or copper sheet are two external wire ends of the reactor. Specifically, two ends of the copper bar 2 are defined as a head end and a tail end, two ends of the copper sheet 3 are defined as the head end and the tail end, then the tail end of the 1 st copper bar is connected with the head end of the 1 st copper sheet, the tail end of the 1 st copper sheet is connected with the head end of the 2 nd copper bar, the tail end of the 2 nd copper sheet is connected with the head end of the 3 rd copper bar, the tail end of the 3 rd copper bar is connected with the head end of the 3 rd copper sheet, other copper bars and copper sheets are sequentially connected, finally, the head end of the 1 st copper bar and the tail end of the 1 st copper sheet are two external connection terminals of the reactor, if no 1 st copper bar exists, the head end of the 1 st copper sheet and the tail end of the 1 st copper sheet are two external connection terminals of the reactor, and if no 1 st copper sheet exists, the head end of the 1 st copper bar and the tail end of the last copper bar are two external connection terminals of the reactor.
Wherein, the number of the annular iron cores 1 is not less than 3, and the number of the copper bars 2 and the copper sheets 3 is not less than 5. As shown in fig. 2 and 3, nut holes 4 are formed at two ends of the copper bar 2, connecting holes 5 are formed at two ends of the copper sheet 3, and connecting screws 6 penetrate through the connecting holes 5 at the end part of the copper sheet 3 and are locked and fixed in the nut holes 4 at the end part of the copper bar 2.
The two end parts of the copper bar 2 are bent towards the outer side of the iron core group, or the two end parts of the copper sheet 3 are bent towards the inner side of the iron core group, or the two end parts of the copper bar 2 and the two end parts of the copper sheet 3 are simultaneously bent towards each other, and the lengths of the bending parts of the copper bar 2 and the copper sheet 3 are matched with the radial thickness of the annular iron core 1.
The copper bars 2 are arranged along the axial direction of the iron core group, the copper bars 2 are attached to the inner wall of the iron core group, a plurality of copper bars 2 are distributed at equal intervals along the circumferential direction of the iron core group, the copper sheets 3 are obliquely arranged on the outer side surface of the iron core group, one end of each copper sheet 3 is connected with one end of one copper bar 2 adjacent to the inner side of the iron core group, and the other end of each copper sheet 3 is connected with one end of the other copper bar 2 adjacent to the inner side of the iron core group.
The outer surface of the annular iron core 1 is provided with an electric insulating layer, and a gap larger than 2mm is reserved between two adjacent annular iron cores 1, so that heat in the annular iron cores 1 combined together can be dissipated to the outside through the gap, and the heat dissipation effect of the reactor is improved.
The filter reactor for high-power SVG and APF of the invention further comprises a plurality of insulator brackets 7, the number of the insulator brackets 7 is equal to that of the copper sheets 3, as shown in fig. 4, one side of the insulator brackets 7 is provided with copper sheet bracket blocks 8, and the plurality of copper sheet bracket blocks 8 are distributed on one side of the insulator brackets 7 at equal intervals along the length direction of the insulator brackets 7. The opposite side of insulator support 7 is provided with iron core support piece 9, and the quantity of iron core support piece 9 is 1 less than the quantity of ring iron core 1, and the clearance quantity with ring iron core 1 equals promptly, and a plurality of iron core support pieces 9 are equidistant to be distributed at the opposite side of insulator support 7 along the length direction of insulator support 7, and the interval between adjacent iron core support piece 9 is ring iron core 1 axial thickness. The copper sheet 3 is provided with a bracket hole 10 matched with the copper sheet bracket block 8, the copper sheet support block 8 is embedded in the support hole 10 of the copper sheet 3, the iron core support block clamp 9 is arranged adjacently the gap between the annular iron cores 1. The insulator bracket 7 fixes the position of the annular iron core 1 on one hand, and forms effective insulation separation between the copper sheet 3 and the annular iron core 1 on the other hand.
The filter reactor for high-power SVG and APF of the invention further comprises an insulating fixing plate 12, wherein the insulating fixing plate 12 is provided with a fixing hole 13, one of the plurality of copper sheets 3 is taken as a fixing copper sheet 14, a riveting nut 15 is fixed on the fixing copper sheet 14, and a fixing screw 16 passes through the fixing hole 13 of the insulating fixing plate 12 and is fastened in the riveting nut 15 of the fixing copper sheet 14, so that the filter reactor is fixed on the insulating fixing plate 12.
The bonding cured product 11 is arranged at the joint of the copper bar 2 and the copper sheet 3, and the bonding cured product 11 is also bonded with the iron core group. The bonding solidified material 11 is coated at the joint of the copper bar 2 and the copper sheet 3, and is bonded with the annular iron core 1, and the reactor is subjected to paint dipping and drying treatment.
According to the filter reactor for high-power SVG and AFP, the iron cores are formed by the plurality of annular iron cores at intervals, the gaps are large, and heat dissipation is easy, so that the problem of temperature rise of the reactor can be effectively controlled, and the service life of the filter reactor is prolonged; in addition, the invention adopts the staggered connection copper pipes and copper sheets to replace the traditional copper wire winding mode, the manufacturing is easier, the whole assembly of the reactor is convenient, the production cost is greatly reduced, the production efficiency is improved, and the copper rod and copper sheet combination mode does not need auxiliary structures such as a wire slot of a copper wire winding structure, thereby simplifying the volume of a coil part, further freeing the inner space of an iron core and further improving the heat dissipation effect of the reactor.
The present invention is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present invention.
Claims (9)
1. A filter reactor for high-power SVG, APF, characterized in that: the electric reactor comprises a plurality of annular iron cores, a plurality of copper bars and a plurality of copper sheets, wherein the annular iron cores are coaxially arranged and form an iron core group along the axial direction of the iron core, the copper bars are arranged in holes of the iron core group, the copper sheets are arranged outside the iron core group, the two ends of the copper bars and the copper sheets are sequentially and alternately connected, and the unconnected end parts of the first copper bar or copper sheet and the last copper bar or copper sheet are two external connection ends of the electric reactor.
2. A filter reactor for high power SVG, APF according to claim 1, characterized in that: the number of the copper bars and the copper sheets is not less than 5.
3. A filter reactor for high power SVG, APF according to claim 1, characterized in that: nut holes are formed in the two ends of the copper bar, connecting holes are formed in the two ends of the copper sheet, and connecting screws penetrate through the connecting holes of the end parts of the copper sheet and are locked and fixed in the nut holes of the end parts of the copper bar.
4. A filter reactor for high power SVG, APF according to claim 3, characterized in that: the two end parts of the copper bar are bent towards the outer side of the iron core group, or the two end parts of the copper sheet are bent towards the inner side of the iron core group, or the two end parts of the copper bar and the two end parts of the copper sheet are bent towards each other at the same time, and the lengths of the bending parts of the copper bar and the copper sheet are matched with the radial thickness of the annular iron core.
5. A filter reactor for high power SVG, APF according to claim 1, characterized in that: the copper bars are arranged along the axial direction of the iron core group and are attached to the inner wall of the iron core group, the copper bars are distributed at equal intervals along the circumferential direction of the iron core group, the copper sheets are obliquely arranged on the outer side surface of the iron core group, one end of each copper sheet is connected with one end of one copper bar adjacent to the inner side of the iron core group, and the other end of each copper sheet is connected with one end of the other copper bar adjacent to the inner side of the iron core group.
6. A filter reactor for high power SVG, APF according to claim 1, characterized in that: the outer surface of the annular iron cores is provided with an electric insulating layer, and a gap larger than 2mm is reserved between two adjacent annular iron cores.
7. A filter reactor for high power SVG, APF according to claim 1, characterized in that: still contain many insulator supports, the quantity and the copper sheet of insulator support are equal, and one side of insulator support is provided with copper sheet support piece, and the opposite side of insulator support is provided with iron core support piece, and it has the support hole that matches with copper sheet support piece to open on the copper sheet, and copper sheet support piece inlays and establishes in the support downthehole of copper sheet, and iron core support piece card is established between adjacent annular iron core clearance.
8. A filter reactor for high power SVG, APF according to claim 1, characterized in that: the copper sheet fixing device further comprises an insulating fixing plate, wherein the insulating fixing plate is provided with a fixing hole, one of the plurality of copper sheets is used as a fixing copper sheet, a riveting nut is fixed on the fixing copper sheet, and the fixing screw penetrates through the fixing hole of the insulating fixing plate and is fastened in the riveting nut of the fixing copper sheet.
9. A filter reactor for high power SVG, APF according to claim 1, characterized in that: and a bonding curing material is arranged at the joint of the copper bar and the copper sheet, and the bonding curing material is bonded with the iron core group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398896.XA CN114188120B (en) | 2021-11-24 | Filtering reactor for high-power SVG and APF |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398896.XA CN114188120B (en) | 2021-11-24 | Filtering reactor for high-power SVG and APF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114188120A CN114188120A (en) | 2022-03-15 |
| CN114188120B true CN114188120B (en) | 2024-06-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315707A (en) * | 2010-07-06 | 2012-01-11 | 李贵祥 | Mixed-excitation high-efficiency motor based on Halbach array |
| CN103295744A (en) * | 2013-07-03 | 2013-09-11 | 江西变压器科技股份有限公司 | Self-saturating reactor for rectifier transformer |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102315707A (en) * | 2010-07-06 | 2012-01-11 | 李贵祥 | Mixed-excitation high-efficiency motor based on Halbach array |
| CN103295744A (en) * | 2013-07-03 | 2013-09-11 | 江西变压器科技股份有限公司 | Self-saturating reactor for rectifier transformer |
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