A study of validation of condition monitoring method of NPPs cable through volume electrical resistivity

Kim, In-Yong; Goo, Cheol-Soo; Lee, Jung‐Hoon; Jin, Beom-soo; Kang, Myeong-Kyun; Shin, Yong-Deok

doi:10.1109/ichve.2012.6357060

2012 International Conference on High Voltage Engineering and Application 2012

DOI: 10.1109/ichve.2012.6357060

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A study of validation of condition monitoring method of NPPs cable through volume electrical resistivity

In-Yong Kim

Cheol-Soo Goo

Jung‐Hoon Lee

et al.

Abstract: The accelerated thermal aging of CSPE(chloro sulfonate polyethylene) of test cables were carried out for the period equal to 20, 40, 60, 80 and 100 years in air at 100, 110 and 120 , respectively. The CSPE cables (TAIHAN electric wire Co. Ltd) were used as starting materials. Condition monitoring methods of the accelerated thermal aging of CSPE cables were estimated through EAB (elongation at break) of IEC 62582, and those were newly estimated through volume electrical resistivity. A validated estimation of th… Show more

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A Study on the Properties of CSPE According to Accelerated Thermal Aging Years

Lee¹,

Kang²,

Jeon³

et al. 2014

Journal of Electrical Engineering and Technology

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-The accelerated thermal aging of CSPE (chlorosulfonated polyethylene) was carried out for 40.41, 121.22, and 202.04 days at 100°C, which are equivalent to 20, 60, and 100years of aging at 50°C, respectively. The volume electrical resistivities of the accelerated thermally aged CSPE samples for 0, 40.41, 121.22, and 202.04 , respectively, at room temperature. The measured currents of the accelerated thermally aged CSPE and the standard sample were almost constant after 5 min of applying a 300-V/mm electric field to the CSPE. The V-I slope of the accelerated thermally aged CSPE sample was increased if the applied electric field was increased at room temperature, and the V-I slope of the accelerated thermally aged CSPE was higher than that of standard CSPE.

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A Study on the Properties of CSPE According to Accelerated Thermal Aging Years

Lee¹,

Kang²,

Jeon³

et al. 2014

Journal of Electrical Engineering and Technology

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Effects of Dried Days on Properties of Seawater and Freshwater Flooded CSPE in NPPs

Jeon¹,

Lee²,

Jeon³

et al. 2015

Journal of Electrical Engineering and Technology

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-Accelerated thermal aging of chlorosulfonated polyethylene (CSPE) was performed for 0 days, 80.82 days, and 161.63 days at 100°C, which is equivalent to 0 y, 40 y, and 80 y of aging, respectively, at 50°C. After freshwater flooding, the volume electrical resistivity of CSPE was highest after 180 days of drying, and its insulating property recovered when dried for more than 300 days. The dielectric constant of the CSPE was not measured after seawater flooding. The dielectric constant of the accelerated thermally aged CSPE was higher after freshwater flooding than that before seawater flooding. The bright, open pores of CSPE were converted into dark, closed pores after seawater flooding, and the dark, closed pores of the accelerated thermally aged CSPE samples were partly converted into bright, open pores after freshwater flooding. The apparent density of CSPE increased slightly whereas its elongation at break (EAB) decreased until 80 y of accelerated thermal aging before seawater flooding. The peak binding energies of oxygen in the non-accelerated and accelerated thermally aged CSPE for 40 y and 80 y were shifted by more than 1.0 eV after seawater and freshwater flooding. The CH 2 content in the non-accelerated and accelerated thermally aged CSPE for 40 y and 80 y after seawater flooding for 5 days was lower than that before seawater flooding whereas atoms such as Cl, O, Pb, Al, Si, Sb, and S that are related to conducting ions such as Na + , Cl -, Mg 2+ , SO 4 2-, and K + were relatively increased.

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A study of validation of condition monitoring method of NPPs cable through volume electrical resistivity

Cited by 2 publications

References 0 publications

A Study on the Properties of CSPE According to Accelerated Thermal Aging Years

A Study on the Properties of CSPE According to Accelerated Thermal Aging Years

Effects of Dried Days on Properties of Seawater and Freshwater Flooded CSPE in NPPs

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