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In this paper, Underground distribution power cable of 20,000 lines was diagnosed using VLF(Very Low Frequency) tanô method. The accumulated big data is analyzed statistically with the Weibull distribution, and the 3D model is implemented through the matrix of statistical factors of TD (average of 8 point tanô), DEV(deviation), STDEV (standard deviation) and SKIRT(deviation slope of 8 point tanô)...
Due to the aging of electric power facilities and the increase in electric power demand, the operation and maintenance of electric power facilities is becoming an important issue. Currently, power Oil-Filled(OF) cables for underground system in South Korea have an average lifetime of 20 years and cables used for more than 25 years are about 20%. In this paper, the lifetime of Oil-Filled(OF) cables...
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