Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference (한국조명전기설비학회:학술대회논문집)
- 2006.05a
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- Pages.284-287
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- 2006
Analysis of Transformer Fluid Aging from Overload Operation
지중 저압접속함의 침수조건에 따른 전위 분석
- Joung, Jong-Man (Korea Electric Power Research Institute of KEPCO) ;
- Lee, Byung-Sung (Korea Electric Power Research Institute of KEPCO) ;
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Choi, Jong-Gi
(Korea Electric Power Research Institute of KEPCO)
;
- Jeong, Yeon-Ha (Korea Electric Power Research Institute of KEPCO) ;
- Park, Cheol-Bae (Korea Electric Power Research Institute of KEPCO) ;
-
Song, Il-Kun
(Korea Electric Power Research Institute of KEPCO)
- Published : 2006.05.11
Abstract
In this paper variety test results were discussed regarding to the ground potential increase. The tests conducted with a joint box simulating leakage point having an insulator fault. Inside the joint box three-phase cables and one neutral line were connected and the insulator at jointed part was peeled from the one of three-phase cables. The potentials around manhole cover were measured with the variation of manhole material, ground resistance and water resistance when the manhole was flooded. The potentials induced by an electric leakage were drastically decreased with increasing the distance from the leakage location and with less ground resistance.
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