CN103474239A - High voltage direct current capacitor with equipotential connection function - Google Patents
High voltage direct current capacitor with equipotential connection function Download PDFInfo
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- CN103474239A CN103474239A CN2013104006619A CN201310400661A CN103474239A CN 103474239 A CN103474239 A CN 103474239A CN 2013104006619 A CN2013104006619 A CN 2013104006619A CN 201310400661 A CN201310400661 A CN 201310400661A CN 103474239 A CN103474239 A CN 103474239A
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Abstract
The invention discloses a high voltage direct current capacitor with an equipotential connection function. The high voltage direct current capacitor comprises capacitor units, a connection copper bar, a support and an electric equipotential line, wherein the number of the capacitor units is an even number, and the rated capacities of the capacitor units are the same; the capacitor units are connected in series through the connection copper bar to form a capacitor bank; the capacitor units are fixedly supported by the support, wherein the support is made of metal; one end of the electric equipotential line is connected to the electric potential midpoint of the capacitor bank; the other end of the electric equipotential line is connected with the support. According to the high voltage direct current capacitor with the equipotential connection function, an equipotential bonding conductor is used for restraining potential difference so as to achieve the purpose of eliminating electromagnetic interference; meanwhile, the high voltage direct current capacitor can realize thunder prevention and conduct effective safety protection on accidental line overload and short circuits.
Description
Technical field
The present invention relates to the capacitor technology field, be specifically related to a kind of high voltage direct current capacitor (HVDC Capacitor) connected with equipotential.
Background technology
Along with the needs that high voltage power network is built, the high voltage direct current capacitor used in electrical network, its rated voltage can reach tens thousand of volts.When capacitor design, capacitor unit that can a plurality of rated voltages are lower is connected in series, and is fixed together and forms a capacitor group by support, and the capacitor group has higher rated voltage, and the fail safe of capacitor group is stronger.
But because of capacitor application under high voltage environment; also need to consider to eliminate electromagnetic interference; lightning protection; unexpected circuit overload, short circuit are carried out to effective safeguard protection; existing capacitor group only simply forms the capacitor unit tandem compound, and its structure is difficult to meet the above-mentioned performance requirement under high voltage environment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of high voltage direct current capacitor connected with equipotential, and this capacitor can be eliminated electromagnetic interference, simultaneously can lightning protection, can carry out effective safeguard protection to unexpected circuit overload, short circuit.
For addressing the above problem, the technical solution used in the present invention is as follows:
A kind of high voltage direct current capacitor connected with equipotential, comprise: capacitor unit, connection copper bar, support, electric equipotential line, described capacitor unit is that even number and rated capacity equate, described capacitor unit forms the capacitor group by described connection copper bar series connection, described capacitor unit is by described support fixed support, described support is the metal quality, and described electric equipotential line one end connects the electromotive force mid point of described capacitor group, and the described electric equipotential line other end connects described support.
As improvement of the technical scheme, described capacitor unit is three-phase capacitor, and each described three-phase capacitor is provided with six leading-out terminals side by side, whole described three-phase capacitors side by side and orientation perpendicular to the orientation of the leading-out terminal of each described three-phase capacitor, connect respectively each phase of whole described three-phase capacitors of described connection copper bar, described electric equipotential line one end connects the electromotive force mid point of a wherein phase of whole described three-phase capacitors of connecting, and the described electric equipotential line other end connects described support.
As improvement of the technical scheme, described capacitor unit is provided with leading-out terminal and porcelain tube, and described porcelain tube wraps up the downside of described leading-out terminal, and described leading-out terminal is the brass bolt.
As improvement of the technical scheme, the design creepage distance of described porcelain tube is more than or equal to 140 millimeters, described leading-out terminal each other and the electric clearance between described leading-out terminal and described support all be more than or equal to 50 millimeters.
As improvement of the technical scheme, described support is aluminium matter.
As improvement of the technical scheme, on described support, be provided with suspension ring.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
The high voltage direct current capacitor connected with equipotential of the present invention, suppress potential difference by equipotential bonding conductor and reach the purpose of eliminating electromagnetic interference, simultaneously can lightning protection, can carry out effective safeguard protection to unexpected circuit overload, short circuit.
The accompanying drawing explanation
Fig. 1 is the high voltage direct current capacitor plan structure schematic diagram connected with equipotential;
Fig. 2 is the high voltage direct current container side structural representation connected with equipotential;
Fig. 3 is the high voltage direct current capacitor perspective view connected with equipotential.
Embodiment
Content of the present invention is described below in conjunction with specific embodiments.
As Figure 1-3, be the high voltage direct current capacitor arrangement schematic diagram connected with equipotential of the present invention.The high voltage direct current capacitor connected with equipotential of the present invention, comprise: capacitor unit 1, connection copper bar 2, support 3, electric equipotential line 4, described capacitor unit 1 is that even number and rated capacity equate, described capacitor unit 1 forms the capacitor group by described connection copper bar 2 series connection, described capacitor unit 1 is by described support 3 fixed supports, described support 3 is the metal quality, described electric equipotential line 4 one ends connect the electromotive force mid point of described capacitor group, and described electric equipotential line 4 other ends connect described support 3.Described electric equipotential line 4 forms the equipotential bonding conductor of knowing clearly, i.e. ground network, described support and be only a microampere rank for the Leakage Current installed on fixing alignment pin.By safety operation, can suppress potential difference and reach the purpose of eliminating electromagnetic interference, simultaneously can lightning protection, unexpected circuit overload, short circuit are carried out to effective safeguard protection.
Further with improvement, described capacitor unit 1 is three-phase capacitor, and each described three-phase capacitor is provided with six leading-out terminals 5 side by side, whole described three-phase capacitors side by side and orientation perpendicular to the orientation of the leading-out terminal 5 of each described three-phase capacitor, connect respectively each phase of whole described three-phase capacitors of described connection copper bar 2, described electric equipotential line 4 one ends connect the electromotive force mid point of a wherein phase of whole described three-phase capacitors of connecting, and described electric equipotential line 4 other ends connect described support 3.Described compact conformation, rationally, effectively conserve space and can guarantee the electric insulation gap.
Further, described capacitor unit 1 is provided with leading-out terminal 5 and porcelain tube 6, the downside of the described leading-out terminal 5 of described porcelain tube 6 parcel, and described leading-out terminal 5 is the brass bolt.The design creepage distance of described porcelain tube 6 is more than or equal to 140 millimeters, described leading-out terminal 5 each other and the electric clearance between described leading-out terminal 5 and described support 3 all be more than or equal to 50 millimeters, described structure has been guaranteed electrical safety.Described support 3 is aluminium matter, and the comprehensive sexual valence of aluminium matter support 3 aspect material cost, processing cost, electric property is higher.Be provided with suspension ring 7 on described support 3, so that lifting capacitor group.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the concrete enforcement of the present invention only limits to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of protection of the invention.
Claims (6)
1. the high voltage direct current capacitor connected with equipotential, it is characterized in that: comprise capacitor unit (1), connect copper bar (2), support (3), electricity equipotential line (4), described capacitor unit (1) is that even number and rated capacity equate, described capacitor unit (1) forms the capacitor group by described connection copper bar (2) series connection, described capacitor unit (1) is by described support (3) fixed support, described support (3) is the metal quality, described electric equipotential line (4) one ends connect the electromotive force mid point of described capacitor group, described electric equipotential line (4) other end connects described support (3).
2. the high voltage direct current capacitor connected with equipotential as claimed in claim 1, it is characterized in that: described capacitor unit (1) is three-phase capacitor, and each described three-phase capacitor is provided with six leading-out terminals (5) side by side, whole described three-phase capacitors side by side and orientation perpendicular to the orientation of the leading-out terminal (5) of each described three-phase capacitor, connect respectively each phase of whole described three-phase capacitors of described connection copper bar (2), described electric equipotential line (4) one ends connect the electromotive force mid point of a wherein phase of whole described three-phase capacitors of connecting, described electric equipotential line (4) other end connects described support (3).
3. the high voltage direct current capacitor connected with equipotential as claimed in claim 1, it is characterized in that: described capacitor unit (1) is provided with leading-out terminal (5) and porcelain tube (6), described porcelain tube (6) wraps up the downside of described leading-out terminal (5), and described leading-out terminal (5) is the brass bolt.
4. the high voltage direct current capacitor connected with equipotential as claimed in claim 3, it is characterized in that: the design creepage distance of described porcelain tube (6) is more than or equal to 140 millimeters, described leading-out terminal (5) each other and the electric clearance between described leading-out terminal (5) and described support (3) all be more than or equal to 50 millimeters.
5. the high voltage direct current capacitor connected with equipotential as claimed in claim 1, it is characterized in that: described support (3) is aluminium matter.
6. the high voltage direct current capacitor connected with equipotential as claimed in claim 1, is characterized in that: be provided with suspension ring (7) on described support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104006619A CN103474239A (en) | 2013-09-06 | 2013-09-06 | High voltage direct current capacitor with equipotential connection function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104006619A CN103474239A (en) | 2013-09-06 | 2013-09-06 | High voltage direct current capacitor with equipotential connection function |
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| Publication Number | Publication Date |
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| CN103474239A true CN103474239A (en) | 2013-12-25 |
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| CN2013104006619A Pending CN103474239A (en) | 2013-09-06 | 2013-09-06 | High voltage direct current capacitor with equipotential connection function |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201072708Y (en) * | 2007-08-30 | 2008-06-11 | 中国电力科学研究院 | Parallel-connection pulse capacitor group |
| CN201601032U (en) * | 2009-10-28 | 2010-10-06 | Abb技术有限公司 | Novel capacitor device |
| CN201812681U (en) * | 2010-09-07 | 2011-04-27 | 武汉电联电力电气技术有限公司 | High-reliability integrated capacitor |
| CN102522228A (en) * | 2011-12-27 | 2012-06-27 | 北京金风科创风电设备有限公司 | Voltage Support Capacitor Module |
| CN203165669U (en) * | 2013-01-28 | 2013-08-28 | 博耳无锡特种电力电容器有限公司 | Integrated high-voltage parallel capacitor with cooling device |
| CN203521177U (en) * | 2013-09-06 | 2014-04-02 | 安徽赛福电子有限公司 | Equipotential connection high-voltage DC capacitor |
-
2013
- 2013-09-06 CN CN2013104006619A patent/CN103474239A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201072708Y (en) * | 2007-08-30 | 2008-06-11 | 中国电力科学研究院 | Parallel-connection pulse capacitor group |
| CN201601032U (en) * | 2009-10-28 | 2010-10-06 | Abb技术有限公司 | Novel capacitor device |
| CN201812681U (en) * | 2010-09-07 | 2011-04-27 | 武汉电联电力电气技术有限公司 | High-reliability integrated capacitor |
| CN102522228A (en) * | 2011-12-27 | 2012-06-27 | 北京金风科创风电设备有限公司 | Voltage Support Capacitor Module |
| CN203165669U (en) * | 2013-01-28 | 2013-08-28 | 博耳无锡特种电力电容器有限公司 | Integrated high-voltage parallel capacitor with cooling device |
| CN203521177U (en) * | 2013-09-06 | 2014-04-02 | 安徽赛福电子有限公司 | Equipotential connection high-voltage DC capacitor |
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Application publication date: 20131225 |