WO2011083772A1 - 避雷器 - Google Patents
避雷器 Download PDFInfo
- Publication number
- WO2011083772A1 WO2011083772A1 PCT/JP2011/000053 JP2011000053W WO2011083772A1 WO 2011083772 A1 WO2011083772 A1 WO 2011083772A1 JP 2011000053 W JP2011000053 W JP 2011000053W WO 2011083772 A1 WO2011083772 A1 WO 2011083772A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lightning arrester
- insulating
- internal element
- voltage side
- insulating container
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Definitions
- Embodiment of this invention is related with the lightning arrester provided with the nonlinear resistor which has a zinc oxide as a main component, and is provided in a transmission line, a power station, a substation, etc.
- a lightning arrester using a zinc oxide element has excellent characteristics such as voltage / current non-linearity, discharge tolerance characteristics, and chemical stability.
- high-performance lightning arresters with significantly improved protection characteristics have been developed and applied to protect gas-insulated switchgears and transformers installed in power plants and substations from abnormal voltages.
- Such a lightning arrester includes a tank type lightning arrester filled with sulfur hexafluoride gas excellent in insulation performance, an insulator type lightning arrester filled with nitrogen and air, and a polymer type lightning arrester.
- the tank type arrester can be significantly downsized by applying sulfur hexafluoride gas as the insulation medium, as with other switchgear equipment, thereby reducing the installation area of substation equipment, etc. Etc. (see, for example, Patent Document 1).
- FIG. 3 The configuration of a conventional tank type lightning arrester will be described with reference to FIG.
- a lightning arrester internal element 1 in which zinc oxide elements 2 are stacked in series is coaxially arranged with a ground tank 5 in a ground tank 5 vertically arranged with an insulating gas 3 made of sulfur hexafluoride gas. It is stored and arranged in.
- One end (upper end portion in FIG. 3) of the lightning arrester internal element 1 in the axial direction is connected to a substation bus (not shown) via a high voltage side conductor 6 supported by an insulating spacer 4.
- a shield 7 is arranged on the high voltage side of the lightning arrester internal element 1 for equalizing the voltage sharing related to the zinc oxide element 2, and a ground potential portion is connected to the low voltage side of the lightning arrester internal element 1. ing.
- the present invention has been made in response to such a conventional situation, and an object of the present invention is to reduce the environmental load and to suppress the electric field of the high electric field portion and to withstand various electrical stresses. It is to provide a lightning arrester that can.
- One aspect of the lightning arrester of the present invention includes: a lightning arrester internal element in which a plurality of non-linear resistors are stacked; a cylindrical insulation container that contains the lightning arrester internal element and contains an insulating gas; and A high-voltage side conductor provided at one end portion so as to be exposed in the insulating container and electrically connected to the lightning arrester internal element, and the exposed surface of the high-voltage side conductor And an insulating resin layer covering at least a boundary portion between the insulating container and the inner surface of the insulating container.
- the longitudinal cross-sectional view which shows schematic structure of the lightning arrester which concerns on embodiment The longitudinal cross-sectional view which shows schematic structure of the lightning arrester which concerns on other embodiment.
- FIG. 1 is a longitudinal sectional view schematically showing a schematic configuration of a lightning arrester 100 according to an embodiment.
- a lightning arrester 100 according to this embodiment includes a cylindrical lightning arrester internal element 1 formed by stacking a plurality of cylindrical zinc oxide elements 2 that are non-linear resistors in series. Yes.
- the lightning arrester internal element 1 is accommodated coaxially with the insulating container 8 in the central portion of the insulating container 8 formed in a cylindrical shape.
- the insulating gas 3 having a lower global warming coefficient than the sulfur hexafluoride gas is accommodated inside the insulating container 8.
- this insulating gas 3 for example, nitrogen, carbon dioxide, or dry air can be used.
- the insulating container 8 is made of an insulating resin such as a silicone resin or an epoxy resin.
- a conductive paint 9 is applied to the outside of the insulating container 8 and plays the same role as a grounded container in a conventional tank type lightning arrester.
- a lid 12 provided with a pressure relief device 11 is provided at one end (lower end in FIG. 1) of the insulating container 8.
- the lid 12 keeps the airtightness in the insulating container 8, and even if the lightning arrester internal element 1 is destroyed due to overloading and the internal pressure of the insulating container 8 rises, the pressure relief device 11 causes the insulating container 8 to rise. The gas in 8 is released and the pressure rise is reduced, so that no explosive scattering occurs.
- the high-voltage side conductor 6 is embedded in the other end of the insulating container 8 (upper end in FIG. 1).
- the high voltage side conductor 6 is electrically connected to a GIS (gas insulated switchgear) connection conductor 13 and is electrically connected to a switchgear and a transformer (not shown) via the GIS connection conductor 13. .
- GIS gas insulated switchgear
- One end (upper end in FIG. 1) of the lightning arrester internal element 1 in the axial direction is electrically connected to the high voltage side conductor 6.
- the lightning arrester internal element 1 is electrically connected to a switching device or a transformer (not shown) via the high-voltage side conductor 6 and the GIS connection conductor 13.
- the low pressure side (lower end in FIG. 1) of the lightning arrester internal element 1 penetrates the insulating container 8 in an airtight manner and is electrically connected to the ground potential portion.
- the high-voltage-side conductor 6 embedded in the insulating container 8 is electrically connected to the upper end of the lightning arrester internal element 1, and is placed on the lower side so as to surround the upper end of the lightning arrester internal element 1 with a space therebetween. Extends towards. Therefore, an exposed surface from which the high-voltage side conductor 6 is exposed is formed on the ceiling surface inside the insulating container 8 and the upper inner wall surface continuous with the ceiling surface.
- the high-voltage side conductor 6 configured in this way also plays a role of controlling voltage sharing along the axial direction of the lightning arrester internal element 1.
- the electric field stress is very high at the boundary between the exposed surface of the high voltage side conductor 6 and the inner side surface (inner wall) of the insulating container 8. For this reason, when a high voltage is applied, there is a high possibility that dielectric breakdown will occur in this portion.
- the insulating gas 3 is not sulfur hexafluoride gas but nitrogen, carbon dioxide, dry air, or the like, the risk increases.
- the insulating resin layer 10 is disposed so as to cover at least the boundary portion between the exposed surface of the high voltage side conductor 6 and the inner wall of the insulating container 8.
- the insulating resin layer 10 can be made of, for example, a silicone resin, an epoxy resin, or the like.
- the insulating resin layer 10 is formed by filling the insulating resin between the inner wall of the insulating container 8 and the lightning arrester internal element 1 at the upper end portion of the insulating container 8. Therefore, the outer peripheral surface of the high voltage side portion of the lightning arrester internal element 1 is covered with the insulating resin layer 10.
- the insulating resin layer 10 only needs to be disposed so as to cover at least the boundary portion between the exposed surface of the high-voltage-side conductor 6 and the inner wall of the insulating container 8, for example, a lightning arrester 100a shown in FIG.
- the insulating resin layer 10 a may be annularly disposed along the boundary portion between the exposed surface of the high voltage side conductor 6 and the inner wall of the insulating container 8.
- the insulating resin layer 10 a can be formed by coating the insulating resin along the boundary portion between the exposed surface of the high voltage side conductor 6 and the inner wall of the insulating container 8.
- the lightning arrester 100 and the lightning arrester 100a configured as described above, even if nitrogen, carbon dioxide, or dry air, which has a lower warming coefficient than the sulfur hexafluoride gas, is used as the insulating gas 3,
- the possibility of dielectric breakdown occurring at the boundary between the exposed surface of the high-voltage side conductor 6 and the inner wall of the insulating container 8 where the electric field stress becomes very high when a voltage is applied can be greatly reduced. That is, the dielectric breakdown level in the high electric field part can be increased. This makes it possible to withstand various electrical stresses, and the lightning arrester can be made smaller and lighter.
- a zinc oxide varistor powder having a high electric field relaxation effect may be mixed in the insulating resin.
- the zinc oxide varistor powder is mixed in the insulating resin, the dielectric breakdown level can be further increased by the electric field relaxation effect.
- the lightning arrester 100 and the lightning arrester 100a even if nitrogen, carbon dioxide, or dry air having a lower global warming coefficient than the sulfur hexafluoride gas is used as the insulating gas 3, a high electric field can be obtained.
- the dielectric breakdown level at the site can be ensured, and the environmental load can be reduced by not using sulfur hexafluoride gas.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
Description
Claims (6)
- 非直線抵抗体を複数積層した避雷器内部要素と、
前記避雷器内部要素を収容するとともに、内部に絶縁性ガスを収容した筒状の絶縁容器と、
前記絶縁容器の一方の端部に、前記絶縁容器内に露出する露出面が形成されるように設けられ、前記避雷器内部要素と電気的に接続された高電圧側導体と、
前記高電圧側導体の前記露出面と前記絶縁容器の内側面との境界部を少なくとも覆う絶縁性樹脂層と
を具備したことを特徴とする避雷器。 - 請求項1記載の避雷器であって、
前記絶縁容器内に収容された絶縁ガスが、窒素又は二酸化炭素又は乾燥空気のいずれかであることを特徴とする避雷器。 - 請求項1記載の避雷器であって、
前記絶縁性樹脂層中に酸化亜鉛バリスター粉末が混合されていることを特徴とする避雷器。 - 請求項2記載の避雷器であって、
前記絶縁性樹脂層中に酸化亜鉛バリスター粉末が混合されていることを特徴とする避雷器。 - 請求項1~4いずれか1項記載の避雷器であって、
前記絶縁性樹脂層は、前記絶縁容器と前記避雷器内部要素の高電圧側の部分との間に絶縁性樹脂を充填して形成されていることを特徴とする避雷器。 - 請求項1~4いずれか1項記載の避雷器であって、
前記絶縁性樹脂層は、前記高電圧側導体の前記露出面と前記絶縁容器の内側面との境界部に沿って環状に形成されていることを特徴とする避雷器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012016804A BR112012016804A2 (pt) | 2010-01-08 | 2011-01-07 | descarregador de sobretensão |
CN201180005510.2A CN102714078B (zh) | 2010-01-08 | 2011-01-07 | 避雷器 |
KR1020127017677A KR101368605B1 (ko) | 2010-01-08 | 2011-01-07 | 피뢰기 |
EP11731770A EP2523194A1 (en) | 2010-01-08 | 2011-01-07 | Arrester |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-003278 | 2010-01-08 | ||
JP2010003278A JP2011142274A (ja) | 2010-01-08 | 2010-01-08 | 避雷器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011083772A1 true WO2011083772A1 (ja) | 2011-07-14 |
Family
ID=44305508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/000053 WO2011083772A1 (ja) | 2010-01-08 | 2011-01-07 | 避雷器 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP2523194A1 (ja) |
JP (1) | JP2011142274A (ja) |
KR (1) | KR101368605B1 (ja) |
CN (1) | CN102714078B (ja) |
BR (1) | BR112012016804A2 (ja) |
WO (1) | WO2011083772A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5905779B2 (ja) | 2012-06-13 | 2016-04-20 | 株式会社日立製作所 | 抵抗器及びそれを備えたスイッチギヤ |
JP6595428B2 (ja) * | 2016-09-16 | 2019-10-23 | 株式会社東芝 | 避雷器 |
CN106504836B (zh) * | 2016-10-12 | 2018-11-27 | 河南平高通用电气有限公司 | 罐式避雷器 |
JP6825663B1 (ja) | 2019-08-30 | 2021-02-03 | 株式会社明電舎 | 避雷器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0224505U (ja) * | 1988-08-01 | 1990-02-19 | ||
JP2008306136A (ja) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | タンク形避雷器 |
JP2010004687A (ja) * | 2008-06-20 | 2010-01-07 | Toshiba Corp | 避雷器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4342078B2 (ja) * | 2000-04-07 | 2009-10-14 | 株式会社東芝 | 避雷器 |
JP2003007513A (ja) * | 2001-06-25 | 2003-01-10 | Mitsubishi Electric Corp | ポリマー避雷器 |
JP4058995B2 (ja) | 2002-05-10 | 2008-03-12 | 株式会社明電舎 | 避雷器 |
SE530587C2 (sv) * | 2006-10-31 | 2008-07-15 | Abb Research Ltd | Elektriskt fältstyrande material |
JP2008210879A (ja) | 2007-02-23 | 2008-09-11 | Toshiba Corp | 内蔵形避雷器 |
JP2010000687A (ja) * | 2008-06-20 | 2010-01-07 | Canon Inc | インクジェットヘッドのインク充填方法及び画像表示装置の製造方法 |
-
2010
- 2010-01-08 JP JP2010003278A patent/JP2011142274A/ja not_active Withdrawn
-
2011
- 2011-01-07 WO PCT/JP2011/000053 patent/WO2011083772A1/ja active Application Filing
- 2011-01-07 EP EP11731770A patent/EP2523194A1/en not_active Withdrawn
- 2011-01-07 KR KR1020127017677A patent/KR101368605B1/ko not_active IP Right Cessation
- 2011-01-07 BR BR112012016804A patent/BR112012016804A2/pt not_active IP Right Cessation
- 2011-01-07 CN CN201180005510.2A patent/CN102714078B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0224505U (ja) * | 1988-08-01 | 1990-02-19 | ||
JP2008306136A (ja) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | タンク形避雷器 |
JP2010004687A (ja) * | 2008-06-20 | 2010-01-07 | Toshiba Corp | 避雷器 |
Also Published As
Publication number | Publication date |
---|---|
BR112012016804A2 (pt) | 2016-04-19 |
EP2523194A1 (en) | 2012-11-14 |
KR101368605B1 (ko) | 2014-02-27 |
KR20120092179A (ko) | 2012-08-20 |
JP2011142274A (ja) | 2011-07-21 |
CN102714078A (zh) | 2012-10-03 |
CN102714078B (zh) | 2015-05-20 |
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