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Volume Resistivity, Specific Heat and Thermal Conductive Properties of the Semiconductive Shield in Power Cables

Lee Kyoung-Yong    (School of Electrical, Electronic and Information Engineering, Wonkwang University   ); Choi Yong-Sung    (School of Electrical, Electronic and Information Engineering, Wonkwang University   ); Park Dae-Hee    (School of Electrical, Electronic and Information Engineering, Wonkwang University  );
  • 초록

    To improve the mean-life and reliability of power cables, we have investigated the volume resistivity and thermal properties demonstrated by changing the content of carbon black, an additive of the semiconductive shield for underground power transmission. Nine specimens were made of sheet form for measurement. Volume resistivity of the specimens was measured by a volume resistivity meter after 10 minutes in a preheated oven at temperatures of both 25 $\pm$ 1[ $^{\circ}C$ ] and 90 $\pm$ 1[ $^{\circ}C$ ]. As well, specific heat (Cp) and thermal conductivity were measured by Nano Flash Diffusivity and DSC (Differential Scanning Calorimetry). The ranges of measurement temperature were from 0[ $^{\circ}C$ ] to 200[ $^{\circ}C$ ], and heating temperature was 4[ $^{\circ}C$ /min]. From these experimental results, volume resistivity was high according to an increase of the content of carbon black. Specific heat was decreased, while thermal conductivity was increased according to a rise in the content of carbon black. Furthermore, both specific heat and thermal conductivity were increased by heating temperature because the volume of materials was expanded according to a rise in temperature.


  • 주제어

    Semiconductive Shield .   Specific Heat .   Thermal Conductivity .   Volume Resistivity.  

  • 참고문헌 (14)

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