• Title, Summary, Keyword: Arrester

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Analysis of Thermal and Electrical Characteristics of ZnO Arrester Blocks (ZnO 피뢰기 소자의 열적.전기적 특성 분석)

  • Lee, Su-Bong;Lee, Bok-Hee
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.21 no.10
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    • pp.82-88
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    • 2007
  • This paper presents the thermal and electrical characteristics of ZnO arrester blocks under the AC voltages. The leakage currents of ZnO arrester blocks were measured as a function of the time. The temperature distributions of ZnO arrester blocks were observed by the thermal image infrared camera. The degradation and thermal runaway of ZnO arrester blocks were closely related to the temperature limit of ZnO arrester blocks which being decided heat generation and dissipation. The temperature and leakage current of ZnO arrester blocks were sensitively changed in a resistance of ZnO arrester blocks. As a result, the degradation and thermal runaway of ZnO arrester blocks depend on the temperature and leakage current of ZnO arrester blocks.

A study on analysis of thermal and electrical parameters of the ZnO arrester block (배전용 ZnO 피뢰기 소자의 열적/전기적 파라미터 분석에 관한 연구)

  • Lee, Bok-Hee;Lee, Su-Bong;Lee, Seung-Ju;Jeon, Byung-Wook;Kim, Dong-Sung
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • pp.353-356
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    • 2007
  • This paper presents the thermal and electrical characteristics of ZnO arrester blocks under the AC voltages. The leakage currents of ZnO arrester blocks were measured as a function of time. The temperature distributions of ZnO arrester blocks were observed by the forward looking infrared camera The degradation and thermal runaway of ZnO arrester blocks were closely related with the temperature limit of ZnO arrester blocks which decided heat generation and dissipation As a result, the degradation and thermal runaway of ZnO arrester blocks depend on the temperature and leakage current of ZnO arrester blocks.

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Arrester Design of High power Converter (대용량 컨버터의 Arrester 설계)

  • Kim Chan-Ki;Lee Won Kyo;Shin Jin Chul;Ryu Hong U
    • Proceedings of the KIPE Conference
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    • pp.461-464
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    • 2004
  • 본 논문은 대용량 컨버터에 이용되는 Arrester에 대한 설계기법을 보여주고 있다. 본 논문에는 Arrester의 설계방법과 일반적인 AC계통에서 사용하는 Arrester와 다른 열방산 특성을 다루었다.

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Temperature Characteristics with Structure of 18kV Lightning Arresters for Distribution System (18kV 배전용 피뢰기의 구조에 따른 온도특성)

  • Cho, Han-Goo;Yoon, Han-Soo;Lee, Un-Yong;Kim, Suk-Sou;Choi, In-Hyuk
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.1125-1128
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    • 2004
  • This paper presents the temperature characteristics with structure of 18 kV lightning arresters for distribution. Three types of polymer arresters were fabricated and ceramic type arrester was also ready to investigate. Below $100^{\circ}C$, three types of polymer arresters exhibited almost the same leakage current value, but above $100^{\circ}C$, polymer arrester that arrester module was injected into polymer housing with grease exhibited the highest leakage current and the arrester with the lowest leakage current was the arrester that silicon rubber was directly injected to arrester module. The rising of leakage current of polymer arrester with grease was because of existing grease between FRP winding and silicon housing, and reducing the insulation characteristics of the grease. All polymer arresters exhibited the same temperature characteristics but ceramic typr arrester was slower than polymer arrester in heat emission despite lowest leakage current. It was thought that the air layer between ZnO varistor blocks and ceramic housing prevented the heat emission. However, in spite of the difference of the structure, the variation of the surface temperature of all arresters exhibited the same result.

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Study on the relief design for the fault current of polymer arrester (폴리머 피뢰기의 고장전류에 대한 방압 설계기술에 관한 연구)

  • Kim, In-Sung;Park, Hoy-Yul;Cho, Han-Goo
    • Proceedings of the KIEE Conference
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    • pp.1717-1719
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    • 1999
  • The chief advantage of polymer arrester. from design of pressure relief, anti-contamination, electrical failure was reduced by outdoor polymer housing. In the first for development of pressure relief design for polymer arrester, fault current and surge were studied through experiments of electrical. Designed the FRP inner tube and unit modules for pressure relief housing. Tested the performance of unit modules for pressure relief of polymer arrester, and the result was successful. The pressure relief of polymer arrester depend on design pattern of diamond shape and ellipse. Study on the pressure relief of FRP inner tube for outdoor polymer arrester. Designed and manufactured FRP inner tube of polymer arrester. Tested the fault current of polymer arrester per 10 kA, 10 cycle.

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A Study on Module Design and Performance of Polymer Arrester (폴리머 피뢰기의 모듈 설계 및 성능에 관한 연구)

  • Cho, Han-Goo;Chun, Jong-Uk;Kang, Yeong-Kil
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.108-111
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    • 2003
  • The main objective of this paper is to module design and pressure relief test a new type of polymer gapless surge arrester for power distribution line. Metal oxide surge arrester for most electric power system applications, power distribution line and electric train are now being used extensively to protect overvoltage due to lightning. Surge arresters with porcelain housing must not have explosive breakage of the housing to minimize damage to other equipment when subjected to internal high short circuit current. When breakdown of gapless elements in a surge arrester occurs due to flashover, fault short current flows through the arrester and internal pressure of the arrester rises. The pressure rise can usually be limited by fitting a pressure relief diaphragm and transferring the arc from the inside to the outside of the housing. However, there is possibility of porcelain fragmentation caused by the thermal shock, pressure rise, etc. Non-fragmenting of the housing is the most desired way to prevent damage to other equipment. The pressure change which is occurred by flashover become discharge energy. This discharge energy raises to damage arrester housing and arrester housing is dispersed as small fragment. Therefore, the pressure relief design is requested to obstruct housing dispersion.

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Suppression of interfacial crack for foam core sandwich panel with crack arrester

  • Hirose, Y.;Hojo, M.;Fujiyoshi, A.;Matsubara, G.
    • Advanced Composite Materials
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    • v.16 no.1
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    • pp.11-30
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    • 2007
  • Since delamination often propagates at the interfacial layer between a surface skin and a foam core, a crack arrester is proposed for the suppression of the delamination. The arrester has a semi-cylindrical shape and is arranged in the foam core and is attached to the surface skin. Here, energy release rates and complex stress intensity factors are calculated using finite element analysis. Effects of the arrester size and its elastic moduli on the crack suppressing capability are investigated. Considerable reductions of the energy release rates at the crack tip are achieved as the crack tip approached the leading edge of the crack arrester. Thus, this new concept of a crack arrester may become a promising device to suppress crack initiation and propagation of the foam core sandwich panels.

The Research for Passive IMD of Gas Tube Arrester (Gas tube형 Arrester의 Passive IMD 연구)

  • Han, Jin-Uk;Kim, Tae-Hong;Yu, Jong-Jun
    • Proceedings of the KIEE Conference
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    • pp.63-66
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    • 2003
  • Resident mobile communication system technology has been developed. But, surged high voltages in antenna generally have damaged mobile communication. To solve this problem, we use arrester in Rx-Tx line system. That is, the arrester is to protect devices in system against considerable over-voltages or lighting strike. Currently, system protection using of arrester has been arrived in content level but these days, the fact of PIMD(Passive Intermodulation Distortion) which is RF passive components' nonlinear characteristic has appeared. This paper describes PIMD' causes occurred in arrester-estimated from Gas tube capsule, plating, temperature, humidity by experiment.

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A Study on the Analysis of the Lightning Surge Characteristics of Arresters in a 154kV Substation (154kV 변전소에서 피뢰장치의 뇌서지특성 해석)

  • Yun, Chang-Sub;Cho, Han-Goo;Lee, Jong-Beom
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.55 no.10
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    • pp.433-439
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    • 2006
  • This paper describes the characteristic evaluation of 154kV lightning arrester developed by domestic technology. To prove the protective ability of lightning arrester developed, various overvoltages were analyzed for A and B arrester were being used now at 154kV air and gas insulation substation, and for arrester developed. The results obtained by the various simulations show that the developed arrester has the effective protective ability and reducing ability of the overvoltage as A and B arrester, nevertheless there are somewhat differences among three kinds of arresters. Accordingly, it is evaluated that the arrester developed by domestic technology secured reliability can be installed actually at 154kV substation. In this paper, EMTP/ATP was used for simulation.

Analysis of thermal characteristics of the ZnO arrester block (산화아연 피뢰기 소자의 열적 특성 분석)

  • Lee, Bok-Hee;Lee, Su-Bong;Lee, Seung-Ju;Jeon, Byung-Wook;Kim, Dong-Sung;Jung, Dong-Cheol
    • Proceedings of the KIEE Conference
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    • pp.1393-1394
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    • 2007
  • This paper presents the thermal characteristics of ZnO arrester blocks under the AC voltage. The leakage currents of ZnO arrester blocks were measured as a function of time. The temperature distribution of ZnO arrester blocks were observed by the forward looking infrared camera. The degradation and thermal runaway of ZnO arrester blocks were related to the temperature of ZnO arrster blocks which depended on heat generation and dissipation. As a result, the degradation and thermal runaway of ZnO arrester blocks are associated with the temperature and leakage current of ZnO arrester blocks.

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