CN104753051A - Coupling capacitor device - Google Patents
Coupling capacitor device Download PDFInfo
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- CN104753051A CN104753051A CN201510131464.0A CN201510131464A CN104753051A CN 104753051 A CN104753051 A CN 104753051A CN 201510131464 A CN201510131464 A CN 201510131464A CN 104753051 A CN104753051 A CN 104753051A
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- capacitor
- coupling capacitance
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- grading ring
- capacitance apparatus
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- 239000003990 capacitor Substances 0.000 title claims abstract description 52
- 230000008878 coupling Effects 0.000 title claims abstract description 22
- 238000010168 coupling process Methods 0.000 title claims abstract description 22
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 22
- 239000012212 insulator Substances 0.000 claims abstract description 31
- 230000003373 anti-fouling effect Effects 0.000 claims description 6
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The invention discloses a coupling capacitor device. The coupling capacitor device comprises a bracket, a capacitor set, a supporting column insulator and equalizing rings. The device is characterized in that the capacitor set and the supporting column insulator are integrally overlapped; the equalizing rings are respectively arranged on the top part, the bottom part and the flange connecting part of the capacitor set; a wire incoming end and a wire outgoing end are respectively arranged at an upper wiring plate and a lower wiring plate of the capacitor set; a lower flange of the supporting column insulator is used as a grounding end. The coupling capacitor device is used as a set with the current limiting inductor, and the problem that the short circuit current of a large-power transmission system exceeds the standard can be solved, so that the investment cost of a power enterprise can be greatly decreased; the device has the characteristics of being high in operation safety and reliability, high in cost performance, high in voltage resistance, high in vibration resistance, small in radio interference voltage, high in voltage, large in capacitance, small in size, and accurate in multi-column and multi-layer matching.
Description
Technical field
The present invention relates to power capacitor, being specially a kind of and the complete use of current limiting reactor, for solving the coupling capacitance apparatus that grid short circuit electric current exceeds standard.
Background technology
Along with the development of electric power system, Power System Interconnection, electromagnetic looped network run, nearly load center source continues to increase, unit and generator capacity growing etc., the short circuit current problem of electric power system voltage Grid at different levels is on the rise.This just requires that various transmitting and transforming equipment in electrical network (all in the switchgears such as circuit breaker, transformer, bus, supporting insulator and even ground network and framework etc.) must meet short-circuit current level and improve the more exacting terms brought.Be limited to current technical merit, carft of construction etc., be difficult to the circuit breaker developing larger rupturing capacity further, in other words, the development speed of current circuit breaker has not caught up with the growth rate of system short circuit capacity.Therefore, how to take effective short-circuit current limiting measure and the corresponding fault current limiter of research and development, become industry scientific and technical personnel and paid close attention to and one of the focus tried to explore.
Current limiting reactor of connecting in transmission line is the way suppressing of short circuit current effective and feasible, but installing another problem that current limiting reactor brings additional is exactly that reactor can cause transient recovery voltage of circuit breaker (TRV) steepness to raise, after TRV steepness raises, can breaking capacity of breaker be caused conversely to decline, even may cause when situation is serious normally can not cut-offfing fault current.Therefore employing measure is needed to reduce TRV steepness.
Reduce TRV steepness, by reducing the oscillation circuit natural frequency of vibration way realization of cut-offfing moment bus bar side residual voltage or going here and there anti-participation after reducing blow-out.By analysis, cut-off moment bus bar side residual voltage and be difficult to reduce, measure of need finding reduces to go here and there the oscillation circuit natural frequency of vibration of anti-participation after blow-out.
Summary of the invention
The object of the invention is the problem exceeded standard for solving grid short circuit electric current, and design coupling capacitance apparatus that is a kind of and the complete use of current limiting reactor, this device can reduce circuit breaker and cut-off the oscillation circuit natural frequency of vibration that current limiting reactor participates in after moment blow-out, thus reaches the object reducing transient recovery voltage of circuit breaker (TRV) steepness.
The technical scheme realizing the object of the invention is:
A kind of coupling capacitance apparatus, comprise support, Capacitor banks, post insulator and grading ring, unlike the prior art: Capacitor banks and post insulator splice in aggregates, grading ring is separately positioned on the top of Capacitor banks, bottom and flange connections, be respectively equipped with end of incoming cables and leading-out terminal at the upper wiring board of Capacitor banks, lower terminal block place, the lower flange of post insulator is earth terminal.
Described Capacitor banks is composed in parallel by 2-10 post capacitor, and every post capacitor is in series by 2-5 economize on electricity container unit, to meet creep distance, insulation and requirement of mechanical strength.
Described capacitor unit comprises the fuse, expander and the lid that are formed by connecting by sleeve, element, is filled with insulating oil in capacitor unit.Sleeve is porcelain or composite, adopts anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure.
The top of described Capacitor banks and bottom connect into an entirety by Y type support and post insulator, but avoid the formation of closed circuit on electrical property, prevent circulation from causing heating while ensureing mechanical strength.
Described post insulator post becomes circumferential to arrange with capacitor column framework according to concrete quantity, specifically can be divided into interior, in, outer or internal and external circumference arranges.
Same post insulator post circumferentially or the capacitor column line of centres are formed as equilateral triangle or square or regular pentagon or positive n limit shape.
Described post insulator is composed in parallel by 2 ~ 20 posts, every column insulator is composed in series by 2 ~ 5 joint elements, post insulator is porcelain or composite, adopt anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure, to meet creep distance, insulation and requirement of mechanical strength.
Described grading ring is annular segmentation composition, and grading ring is in the same plane with the framework of this layer respectively, and is interconnected; The inside radius of grading ring is greater than framework external diameter, has at least three intercell connectors to be connected between grading ring with framework.
Described grading ring respectively establishes 1 ~ 2 at the top of Capacitor banks, bottom and flange connections, to reduce the generation of corona.
Coupling capacitance apparatus of the present invention is used for the electric power system of 220kV and above, and rated capacity is 20nF ~ 400nF.
Coupling capacitance apparatus of the present invention has following advantage: the problem 1, exceeded standard for solving large capacity transmission system short-circuit electric current with the complete use of current limiting reactor, greatly reduces the cost of investment of electric power enterprise; 2, property safe and reliable to operation is high, and cost performance is high; 3, voltage endurance capability is strong; 4, anti-seismic performance is good; 5, radio interference voltage is low; 6, high voltage, bulky capacitor, volume are little; 7, multicolumn multilayer coordinates feature accurately.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment of this coupling capacitance apparatus;
Fig. 2 is the vertical view of the embodiment of this coupling capacitance apparatus;
Fig. 3 is capacitor unit structural representation in Fig. 1;
In figure: 1, grading ring; 2, Sign Board; 3, Capacitor banks; 4, support; 5, post insulator; 6, end of incoming cables (or leading-out terminal); 7, leading-out terminal (or end of incoming cables); 8, intercell connector; 9, single-column capacitor.10, capacitor unit, 10-1, lid, 10-2, expander, 10-3, fuse, 10-4, sleeve.
Embodiment
As shown in Fig. 1 ~ 2, coupling capacitance apparatus is by grading ring 1, and Sign Board 2, Capacitor banks 3, support 4, post insulator 5, end of incoming cables (or leading-out terminal) 6, leading-out terminal (or end of incoming cables) 7, intercell connector 8 is formed.Splice into an entirety with the top of post insulator 5 by Y type support 4 bottom Capacitor banks 3, electrical property avoids the formation of closed circuit, while ensureing mechanical strength, prevent circulation from causing heating.Grading ring 1 respectively arranges 1-2 at the top of Capacitor banks 3, bottom and flange connections, to reduce the generation of corona, end of incoming cables (or leading-out terminal) 6 is the terminal block on Capacitor banks top, leading-out terminal (or end of incoming cables) 7 is the terminal block of Capacitor banks bottom, and earth terminal is the lower flange of post insulator 5.
As shown in Figure 3, Capacitor banks 3 is composed in parallel by 2 ~ 10 post capacitors 9, every post capacitor 9 is composed in series by 2 ~ 5 economize on electricity container units 10, capacitor unit 10 comprises fuse 10-3, the expander 10-2 and lid 10-1 that are formed by connecting by sleeve 10-4, element, be filled with insulating oil in capacitor unit 10, make creep distance, insulation and mechanical strength engineering demands.
Post insulator 5 is composed in parallel by 2 ~ 20 post single-column post insulators, and every column insulator is composed in series by 2 ~ 5 joint elements, makes creep distance, insulation and mechanical strength engineering demands.Post insulator 5 and capacitor 9 framework according to concrete quantity by interior, in, outer or internal and external circumference arranges.Same post insulator 5 circumferentially or capacitor 9 line of centres are formed as equilateral triangle or square or regular pentagon or positive n limit shape.
Grading ring 1 is annular segmentation composition, and grading ring 1 is in the same plane and be interconnected with the framework of this layer.The inside radius of grading ring 1 is greater than framework external diameter, and grading ring 1 is connected with there being at least three intercell connectors 8 between framework.
Capacitor unit 10 sleeve material can be porcelain or compound, adopts anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure.Post insulator 5 material can be porcelain or compound, adopts anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure.
Above-described embodiment, be only the specific case further described object of the present invention, technical scheme and beneficial effect, the present invention is not defined in this.All make within scope of disclosure of the present invention any amendment, equivalent replacement, improvement etc., be all included within protection scope of the present invention.
Claims (8)
1. a coupling capacitance apparatus, comprise support, Capacitor banks, post insulator and grading ring, it is characterized in that: Capacitor banks and post insulator splice in aggregates, grading ring is separately positioned on the top of Capacitor banks, bottom and flange connections, be respectively equipped with end of incoming cables and leading-out terminal at the upper wiring board of Capacitor banks, lower terminal block place, the lower flange of post insulator is earth terminal.
2. coupling capacitance apparatus according to claim 1, is characterized in that: described Capacitor banks is composed in parallel by 2-10 post capacitor, and every post capacitor is in series by 2-5 economize on electricity container unit.
3. coupling capacitance apparatus according to claim 2, is characterized in that: described capacitor unit comprises the fuse, expander and the lid that are formed by connecting by sleeve, element, is filled with insulating oil in capacitor unit; Sleeve is porcelain or composite, adopts anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure.
4. coupling capacitance apparatus according to claim 1, it is characterized in that: described post insulator is composed in parallel by 2 ~ 20 posts, every column insulator is composed in series by 2 ~ 5 joint elements, post insulator is porcelain or composite, adopt anti-fouling type or the large umbellule of large distance, or isometrical or waney dark rib type beveled structure.
5. coupling capacitance apparatus according to claim 1, it is characterized in that: described post insulator post and capacitor column framework according to concrete quantity circumferentially shape arrange, same post insulator post circumferentially or the capacitor column line of centres are formed as equilateral triangle or square or regular pentagon or positive n limit shape.
6. coupling capacitance apparatus according to claim 1, is characterized in that: described grading ring is annular segmentation composition, and grading ring is in the same plane with the framework of this layer respectively, and is interconnected; The inside radius of grading ring is greater than framework external diameter, has at least three intercell connectors to be connected between grading ring with framework.
7. coupling capacitance apparatus according to claim 1, is characterized in that: described grading ring respectively establishes 1 ~ 2 at the top of Capacitor banks, bottom and flange connections.
8. coupling capacitance apparatus according to claim 1, is characterized in that: this coupling capacitance apparatus is used for the electric power system of 220kV and above, and rated capacity is 20nF ~ 400nF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131464.0A CN104753051A (en) | 2015-03-25 | 2015-03-25 | Coupling capacitor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510131464.0A CN104753051A (en) | 2015-03-25 | 2015-03-25 | Coupling capacitor device |
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| Publication Number | Publication Date |
|---|---|
| CN104753051A true CN104753051A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510131464.0A Pending CN104753051A (en) | 2015-03-25 | 2015-03-25 | Coupling capacitor device |
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| CN (1) | CN104753051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680430A (en) * | 2016-03-08 | 2016-06-15 | 北京电力设备总厂有限公司 | Dry-type hollow current-limiting reactor device |
| CN106487217A (en) * | 2015-08-27 | 2017-03-08 | 中国电力科学研究院 | A kind of divider |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5317473A (en) * | 1991-09-16 | 1994-05-31 | Asea Brown Boveri Ab | Surge arrester assembly |
| CN201364786Y (en) * | 2009-03-13 | 2009-12-16 | 抚顺电瓷制造有限公司 | 750kV plateau type alternating current zinc oxide lightning arrester |
| CN101694960A (en) * | 2009-10-10 | 2010-04-14 | 桂林电力电容器有限责任公司 | High-voltage direct-current polar PLC capacitor |
| CN203983045U (en) * | 2014-06-30 | 2014-12-03 | 中国西电电气股份有限公司 | A kind of voltage levels coupling capacitor structure |
| CN204578078U (en) * | 2015-03-25 | 2015-08-19 | 桂林电力电容器有限责任公司 | Coupling capacitance apparatus |
-
2015
- 2015-03-25 CN CN201510131464.0A patent/CN104753051A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5317473A (en) * | 1991-09-16 | 1994-05-31 | Asea Brown Boveri Ab | Surge arrester assembly |
| CN201364786Y (en) * | 2009-03-13 | 2009-12-16 | 抚顺电瓷制造有限公司 | 750kV plateau type alternating current zinc oxide lightning arrester |
| CN101694960A (en) * | 2009-10-10 | 2010-04-14 | 桂林电力电容器有限责任公司 | High-voltage direct-current polar PLC capacitor |
| CN203983045U (en) * | 2014-06-30 | 2014-12-03 | 中国西电电气股份有限公司 | A kind of voltage levels coupling capacitor structure |
| CN204578078U (en) * | 2015-03-25 | 2015-08-19 | 桂林电力电容器有限责任公司 | Coupling capacitance apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 党晓强等: "一种用于高压耦合电容器在线监测新技术研究", 《中国测试技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487217A (en) * | 2015-08-27 | 2017-03-08 | 中国电力科学研究院 | A kind of divider |
| CN106487217B (en) * | 2015-08-27 | 2019-11-01 | 中国电力科学研究院 | A kind of divider |
| CN105680430A (en) * | 2016-03-08 | 2016-06-15 | 北京电力设备总厂有限公司 | Dry-type hollow current-limiting reactor device |
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Application publication date: 20150701 |