CN109461570B - Damping device - Google Patents
Damping device Download PDFInfo
- Publication number
- CN109461570B CN109461570B CN201811300043.6A CN201811300043A CN109461570B CN 109461570 B CN109461570 B CN 109461570B CN 201811300043 A CN201811300043 A CN 201811300043A CN 109461570 B CN109461570 B CN 109461570B
- Authority
- CN
- China
- Prior art keywords
- coil
- resistor
- wire
- reactor
- damping device
- 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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Links
- 238000013016 damping Methods 0.000 title claims abstract description 24
- 238000005538 encapsulation Methods 0.000 claims abstract description 10
- 239000003779 heat-resistant material Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 2
- 230000008023 solidification Effects 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a damping device, which comprises a reactor coil and a resistor coil, wherein the resistor coil is wound on the outer side of the reactor coil or the outer side of the resistor coil, both the reactor coil and the resistor coil are provided with an encapsulation layer, the wire outlet end of the reactor coil is connected with the wire outlet end of the resistor coil, the connection part is a parallel wire outlet end, and a serial wire outlet terminal is arranged on the resistor coil and positioned between the wire inlet end and the wire outlet end of the resistor coil. The reactor coil and the resistor coil are wound together, the structure is integrated, the space is small, the production cost is reduced, and the reactor coil and the resistor coil are suitable for being laid out in a cabinet.
Description
Technical Field
The invention relates to the technical field of current limiting of power distribution equipment of a power system, in particular to a damping device.
Background
The construction of the distribution network in China is seriously lagged relative to the power transmission network, the grid frame is weak, the facilities are aged, the wire diameter is small, the wire length is long (especially mountain village wires), the quantity of distribution transformers is large, even more wires are provided with a plurality of large-capacity motors or industrial loads which change rapidly, and the low voltage at the tail end of the wire and the serious voltage drop are caused.
In order to solve the problems, a series compensation device can be additionally arranged on a 10kV line. Referring to fig. 1, at present, a parallel circuit of a series compensation device includes a capacitor bank 3 and a resistor voltage limiter 4, a series circuit including a damping device 5 and a discharge switch is connected in parallel to two ends of the parallel circuit of the capacitor bank 3 and the resistor voltage limiter 4, two ends of the parallel circuit of the capacitor bank 3 and the resistor voltage limiter 4 are both connected with a series isolation switch 2, and two ends of the isolation switch 2 are connected with a bypass isolation switch 1. The damping device 5 limits and damps the discharge current of the capacitor bank 3 when the discharge switch is operated, and prevents the capacitor bank 3, spark gap, switch and other devices from being damaged in the discharge process. The series compensation device has the problem of overlarge power consumption of the damping device 5 in actual engineering application of a distribution line. Since the damping device 5 must be in a hollow structure, in order to avoid excessive power consumption of the damping device 5, the volume of the damping device 5 may be large, resulting in higher production cost.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a damping device which is used for solving the problem of high production cost caused by large volume of the existing damping device.
The invention comprises the following steps:
the damping device comprises a reactor coil and a resistor coil, wherein the resistor coil is wound on the outer side of the reactor coil or the outer side of the resistor coil, the reactor coil and the resistor coil are both provided with an encapsulation layer, the wire outlet end of the reactor coil is connected with the wire outlet end of the resistor coil, the connection part is a parallel wire outlet end, and a serial wire outlet terminal is arranged on the resistor coil and positioned between the wire inlet end and the wire outlet end of the resistor coil.
Preferably, a first busbar frame is arranged above the reactor coil and the resistor coil, a second busbar frame is arranged below the reactor coil and the resistor coil, the busbar frames are connected with the coils through insulating partition plates, the wire inlet ends of the reactor coil and/or the wire inlet ends of the resistor coil are connected with the first busbar frame, and the parallel wire outlet ends are connected with the second busbar frame.
Preferably, the height of the insulating partition is adjustable.
Preferably, a supporting insulator is arranged on one side, far away from the coil, of the second busbar.
Preferably, an insulating stay is provided between the reactor coil and the resistor coil.
Preferably, the resistor coil comprises at least one layer of resistance wire spirally wound in the forward and reverse directions, an insulating layer is arranged between the same layer of resistance wire in the forward and reverse directions, an encapsulation layer or an insulating layer is arranged between two adjacent layers of resistance wires, and the wire outlet end of the upper layer of resistance wire is connected with the wire inlet end of the lower layer of resistance wire.
Preferably, the series outgoing terminals are arranged at the intersections of the positive and negative resistance wires of each layer.
Preferably, the insulating layer is made of an insulating heat-resistant material.
Further, the insulating layer is made of H-level insulating heat-resistant materials.
Preferably, the encapsulation layer is integrally formed by curing epoxy glass yarns.
The beneficial effects of the invention are as follows: the reactor coil and the resistor coil are wound together, the structure is integrated, the space is small, the production cost is reduced, and the reactor coil and the resistor coil are suitable for being laid out in a cabinet.
Drawings
FIG. 1 is a schematic diagram of a prior art distribution network series compensation device;
FIG. 2 is a diagram showing electrical connections according to a preferred embodiment of the present invention;
FIG. 3 is a general structural view showing a preferred embodiment of the present invention;
FIG. 4 is a diagram showing the internal connection of a resistor coil according to a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of the internal windings of a resistor coil according to a preferred embodiment of the present invention;
fig. 6 is a general structural view showing a preferred embodiment of the present invention.
Detailed Description
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention, as well as the preferred embodiments thereof, together with the following detailed description of the invention, given by way of illustration only, together with the accompanying drawings.
Referring to fig. 2 and 3, the damping device disclosed in this embodiment includes a reactor coil 11 and a resistor coil 12, the resistor coil 12 is wound on the outside of the reactor coil 11 or the reactor coil 11 is wound on the outside of the resistor coil 12, the resistor coil 12 of this embodiment is wound on the outside of the reactor coil 11, the reactor coil 11 and the resistor coil 12 are both provided with an encapsulation layer, an insulating stay 16 is provided between the reactor coil 11 and the resistor coil 12, the insulating stay 16 is distributed or uniformly distributed between the reactor coil 11 and the inductor coil, and the insulating stay 16 is used for isolating the reactor coil 11 and improving the heat dissipation efficiency of the reactor coil 11 and the resistor coil 12. The outlet end of the reactor coil 11 is connected with the outlet end of the resistor coil 12, the connection is parallel outlet end, and a series outlet terminal 13-3 is arranged on the resistor coil 12 and between the inlet end and the outlet end of the resistor coil 12. According to practical application, when the reactor coil 11 and the resistor coil 12 are in parallel connection, the inlet end of the reactor coil 11 and the inlet end of the resistor coil 12 can be connected together to form a lead-in end A of the whole device, and the parallel outlet end is a lead parallel outlet end B of the whole device; when the reactor coil 11 and the resistor coil 12 are in serial connection, the wire inlet end of the reactor coil 11 is the wire inlet end A of the whole device, the serial wire outlet terminal 13-3 is the wire serial outlet end C of the whole device, the structure of the embodiment is integrated, the space volume is small, the production cost can be reduced, and the device is suitable for the layout in a cabinet.
Referring to fig. 4 and 5, the resistor coil 12 includes at least one layer of forward and reverse spirally wound resistor wire, the number of layers of the resistor wire can be determined according to the magnitude of the engineering discharge current, and the serial outgoing terminal 13-3 is disposed at the intersection of each layer of forward and reverse resistor wire, so as to realize resistance adjustment. The resistance wire of each layer of the embodiment is spirally wound in the positive and negative directions, the whole magnetic linkage is zero, the leakage inductance is negligible, and the characteristic of 'pure resistance' is integrally embodied. The resistance wire is made of nichrome, the nichrome resistance wire has large resistivity, small winding volume, can bear high temperature of thousands DEG C, ensures the thermal stability performance of the resistance wire under discharge current, and has excellent shock resistance. An insulating layer is arranged between the same layer of positive and negative direction resistance wires, the insulating layer adopts an insulating heat-resistant material, and in order to achieve a better effect, the insulating layer can adopt an H-level insulating heat-resistant material, so that the thermal stability performance of the resistance wires under discharge current can be ensured. An encapsulation layer or a heat-resistant insulating layer is arranged between two adjacent layers of resistance wires, and the wire outlet end of the upper layer of resistance wires is connected with the wire inlet end of the lower layer of resistance wires.
Referring to fig. 2 and 6, in order to better arrange the lead wires of the reactor coil 11 and the resistor coil 12, a first bus bar 13-1 is disposed above the reactor coil 11 and the resistor coil 12, a second bus bar 13-2 is disposed below the reactor coil 11 and the resistor coil 12, the bus bars are connected with the coils through an insulating partition 14, the height of the insulating partition 14 is adjustable, the height of the insulating partition 14 is related to the voltage level of the product, for example, 10kV product, and the height is not less than 70mm. According to practical application, when the reactor coil 11 and the resistor coil 12 are in parallel connection, the wire inlet end of the reactor coil 11 and the wire inlet end of the resistor coil 12 are connected with the first bus bar 13-1, the first bus bar 13-1 forms a wire inlet end A of the whole device, the parallel wire outlet end is connected with the second bus bar 13-2, and the second bus bar 13-2 forms a wire parallel outlet end B of the whole device; when the reactor coil 11 and the resistor coil 12 are in a serial connection relationship, the incoming end of the reactor coil 11 is connected with the first confluence frame 13-1, the first confluence frame 13-1 forms a lead-in end A of the whole device, the serial outgoing terminal 13-3 is a lead serial outgoing end C of the whole device, the embodiment is provided with a plurality of serial outgoing terminals 13-3, the resistance value is adjustable within a certain range, and an adjusting gear can be preset, for example, a gear adjusting resistor is set by adopting a rated resistance value +/-5%, so that the optimal damping effect can be achieved by adjusting the resistance value in the engineering debugging process. In addition, the reactor coil 11 and the resistor coil 12 of the present embodiment may be connected in series, or may be connected in parallel, so that the connection manner is flexible, and the connection relationship between the reactor coil 11 and the resistor coil 12 may be adjusted, thereby achieving a better damping effect.
In order to improve the installation accuracy and reduce the cost, the whole device is provided with a supporting insulator 15 only at one side of the second bus bar 13-2 away from the coil. The encapsulation layer of the embodiment is integrally formed by solidifying epoxy glass yarns, so that the dynamic stability performance of the whole device under discharge current is ensured.
The present invention is not limited to the above embodiments, but is merely preferred embodiments of the present invention, and the present invention should be construed as being limited to the above embodiments as long as the technical effects of the present invention are achieved by the same means. Various modifications and variations are possible in the technical solution and/or in the embodiments within the scope of the invention.
Claims (8)
1. A damping device, characterized by: including reactor coil (11) and resistor coil (12), the outside at reactor coil (11) or the outside at resistor coil (12) is wound to resistor coil (11), and reactor coil (11) and resistor coil (12) all are provided with the encapsulation layer, the encapsulation layer adopts epoxy glass yarn solidification integrated into one piece, and the wire end of reactor coil (11) links to each other with the wire end of resistor coil (12), and this junction is parallel wire end, and be provided with series connection wire terminal (13-3) on resistor coil (12) and between the wire inlet end and the wire outlet of resistor coil (12), reactor coil (11) with the top of resistor coil (12) is provided with first busbar (13-1), the below of reactor coil (11) and resistor coil (12) is provided with second busbar (13-2), is connected through insulating barrier (14) between busbar and the coil, the end of reactor coil (11) and/or wire inlet end and/or resistor coil (12) are connected with second busbar (13-1) through insulating barrier (14).
2. The damping device of claim 1, wherein: the height of the insulating partition (14) is adjustable.
3. The damping device of claim 1, wherein: and a supporting insulator (15) is arranged on one side, far away from the coil, of the second bus frame (13-2).
4. The damping device of claim 1, wherein: an insulating stay (16) is arranged between the reactor coil (11) and the resistor coil (12).
5. The damping device of claim 1, wherein: the resistor coil (12) comprises at least one layer of resistance wire spirally wound in the forward and reverse directions, an insulating layer is arranged between the same layer of resistance wire in the forward and reverse directions, an encapsulation layer or an insulating layer is arranged between two adjacent layers of resistance wires, and the wire outlet end of the upper layer of resistance wire is connected with the wire inlet end of the lower layer of resistance wire.
6. The damping device of claim 5, wherein: the series outgoing terminals (13-3) are arranged at the intersections of the positive and negative resistance wires of each layer.
7. The damping device of claim 5, wherein: the insulating layer is made of insulating heat-resistant materials.
8. The damping device of claim 7, wherein: the insulating layer is made of an H-level insulating heat-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300043.6A CN109461570B (en) | 2018-11-02 | 2018-11-02 | Damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811300043.6A CN109461570B (en) | 2018-11-02 | 2018-11-02 | Damping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109461570A CN109461570A (en) | 2019-03-12 |
| CN109461570B true CN109461570B (en) | 2024-02-09 |
Family
ID=65609285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811300043.6A Active CN109461570B (en) | 2018-11-02 | 2018-11-02 | Damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109461570B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295267Y (en) * | 1997-06-03 | 1998-10-21 | 无锡市泰波电抗器厂 | Dry hollow series reactor |
| CN2586231Y (en) * | 2002-12-10 | 2003-11-12 | 丹东市互感器厂 | High-flux reactor device |
| CN101599344A (en) * | 2009-03-31 | 2009-12-09 | 无锡市泰波电抗器有限公司 | Dry-type hollow parallel capacity regulating reactor |
| CN201946975U (en) * | 2011-02-23 | 2011-08-24 | 华东电力试验研究院有限公司 | Alternating-direct current current-limiting device |
| CN202093925U (en) * | 2011-05-26 | 2011-12-28 | 北京电力设备总厂 | Neutral point grounding dry type hollow reactor with adjustable resistance |
| CN102916414A (en) * | 2012-11-06 | 2013-02-06 | 上海市电力公司 | Direct current and alternating current limiting device |
| CN204946629U (en) * | 2015-07-26 | 2016-01-06 | 珠海蓝瑞盟电气有限公司 | The hollow noninductive resistor of a kind of high pressure dry |
| CN105428003A (en) * | 2015-11-30 | 2016-03-23 | 许继集团有限公司 | Hollow core splitting reactor |
| CN106710833A (en) * | 2017-01-16 | 2017-05-24 | 山东哈大电气有限公司 | Resistor type electric reactor and manufacturing method thereof |
| CN209374242U (en) * | 2018-11-02 | 2019-09-10 | 珠海蓝瑞盟电气有限公司 | A kind of damping unit |
-
2018
- 2018-11-02 CN CN201811300043.6A patent/CN109461570B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295267Y (en) * | 1997-06-03 | 1998-10-21 | 无锡市泰波电抗器厂 | Dry hollow series reactor |
| CN2586231Y (en) * | 2002-12-10 | 2003-11-12 | 丹东市互感器厂 | High-flux reactor device |
| CN101599344A (en) * | 2009-03-31 | 2009-12-09 | 无锡市泰波电抗器有限公司 | Dry-type hollow parallel capacity regulating reactor |
| CN201946975U (en) * | 2011-02-23 | 2011-08-24 | 华东电力试验研究院有限公司 | Alternating-direct current current-limiting device |
| CN202093925U (en) * | 2011-05-26 | 2011-12-28 | 北京电力设备总厂 | Neutral point grounding dry type hollow reactor with adjustable resistance |
| CN102916414A (en) * | 2012-11-06 | 2013-02-06 | 上海市电力公司 | Direct current and alternating current limiting device |
| CN204946629U (en) * | 2015-07-26 | 2016-01-06 | 珠海蓝瑞盟电气有限公司 | The hollow noninductive resistor of a kind of high pressure dry |
| CN105428003A (en) * | 2015-11-30 | 2016-03-23 | 许继集团有限公司 | Hollow core splitting reactor |
| CN106710833A (en) * | 2017-01-16 | 2017-05-24 | 山东哈大电气有限公司 | Resistor type electric reactor and manufacturing method thereof |
| CN209374242U (en) * | 2018-11-02 | 2019-09-10 | 珠海蓝瑞盟电气有限公司 | A kind of damping unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109461570A (en) | 2019-03-12 |
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