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Characteristics of a Corona between a Wiring Clamp (Dead End Clamp) and a Porcelain Insulator Used in a 154kV Power Receptacle 원문보기

International Journal of Safety, v.7 no.1, 2008년, pp.21 - 25  

Han, Woon-Ki (Korea Electrical Safety Corporation)

Abstract ▼ AI-Helper 아이콘AI-Helper

The occurrence of a corona is that electrical discharge due to the heterogeneity that occurs when an electrical field is concentrated in an electrode due to a cusp formed on said electrode. Wire treatment at the end of a 154kV dead end clamp for end users accelerates the occurrence of corona, which ...

주제어

#FEMLAB corona   #dead end clamp span   #electric field   #UV camera   #porcelain insulator  

AI 본문요약
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제안 방법

  • The corona images following the conditions of separation distance between clamps and insulators installed in power facilities and applied voltage were detected. By means of modeling performed with the finite element method (FEMLAB), the degree of concentration of the electrical field between insulators by dead end clamps and wire connection points, and its impact on insulators was investigated.
  • It obtains numerical as opposed to continuous solutions at each nodal point. By modeling via the finite element method, the degree of concentration of the electric field between a dead end clamp and an insulator by wire connection point, and its effect on the insulators was investigated.
  • In this study, characteristics of corona occurring between porcelain insulators and support clamps (insulator of dead end clamp) of overhead lines used in 154kV end-user power facilities were investigated. The corona images following the conditions of separation distance between clamps and insulators installed in power facilities and applied voltage were detected.

대상 데이터

  • under which the phenomenon occurred. The equipment was constructed of lead-in wire (bare wire, 150mm2), a dead end clamp, and the end wire. The lead-out distance of steel wire (bare wire) was divided into 3 stages of 7.

이론/모형

  • Corona following the separation distance between the clamps and insulators installed in power facilities, states of contamination, and conditions (humidity and contamination of insulators) of the surrounding environment were determined using a UV image camera (OFIL, Israel). The stress affecting the insulators by electric field was analyzed using the finite element method (FEMLAB). By means of modeling by the finite element method, the degree of concentration between insulators by dead end clamps and wire connection points, and its impact on insulators were investigated.
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참고문헌 (9)

  1. C.K.Birdsall, "Partial-in-cell changed-particle simulation, plus Monte Carlo Collision with Neutrial Atoms,Pic-MCC." IEEE Transaction on Plasma Science, vol.19, pp.66-85, 1991 

  2. Hee-Ro Kwack, "An Internal partial discharge measurement method excepted an external corona noise", KIIEE, vol.15, 2001. 

  3. W.J. Carter, "Pratical Aspect Partial Discharge Measurements", IEEE Trans. PAS, vol.101, NO 7, pp.1985-1989, 1982. 

  4. A.J.Davies and C.J.Rvans, "Field distortion in gaseous discharge between parallel-plate electrode," Proceeding of IEE, vol.114, pp.1547, 1967. 

  5. M.Khalifa, High-Voltage Engineering, Malcel Dekker, Inc., 1990 

  6. O.C.Zienkiewiez and R.L.Taylor, "The Finite Element Method Volume2, McGraw-Hill, 1989, pp.484-494. 

  7. Jong-Seo Kim, "A study on partial discharge about mold transformer by live sates", KESCO ESRI REPORT, pp. 181-188, 1999. 

  8. Iae-Yoon Park, "The effect of magnet fields on the corona discharge", KIIEE, vol.15, NO 3, pp51-58, May 2001 

  9. D A. Nattrass, "History of Partial Discharge Research", IEEE Trans. 日, Magazine, Vol. 9, No 4, pp.27-31, 1993. 

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