TY - GEN
T1 - Comparison of broadband impedance spectroscopy and time domain reflectometry for locating cable degradation
AU - Hirai, Naoshi
AU - Yamada, Takayuki
AU - Ohki, Yoshimichi
PY - 2012/12/1
Y1 - 2012/12/1
N2 - A new method called the broadband impedance spectroscopy (BIS), which is a kind of frequency domain reflectometry, is being developed as a reliable method for locating a degraded portion of a low voltage cable. The sensitivity of the BIS method is compared to that of the time domain reflectometry (TDR). In the first case, the sheath and insulation of a 50-m-long polyvinyl chloride insulated cable were partially peeled off. In the second case, cables insulated with silicone rubber, flame-retardant ethylene propylene rubber, or cross-linked polyethylene, each about 25 m long, were aged simultaneously by heat and γ-irradiation in air. In both two cases, a clear peak indicating the damaged or aged portion appears in the BIS measurement, while no such a peak appears in the TDR measurement. Therefore, the BIS method is much superior to the TDR method for locating a degraded portion in a cable.
AB - A new method called the broadband impedance spectroscopy (BIS), which is a kind of frequency domain reflectometry, is being developed as a reliable method for locating a degraded portion of a low voltage cable. The sensitivity of the BIS method is compared to that of the time domain reflectometry (TDR). In the first case, the sheath and insulation of a 50-m-long polyvinyl chloride insulated cable were partially peeled off. In the second case, cables insulated with silicone rubber, flame-retardant ethylene propylene rubber, or cross-linked polyethylene, each about 25 m long, were aged simultaneously by heat and γ-irradiation in air. In both two cases, a clear peak indicating the damaged or aged portion appears in the BIS measurement, while no such a peak appears in the TDR measurement. Therefore, the BIS method is much superior to the TDR method for locating a degraded portion in a cable.
KW - Broadband impedance spectroscopy
KW - diagnosis
KW - frequency domain reflectometry
KW - insulation
KW - nuclear power plant
KW - time domain reflectometry
UR - http://www.scopus.com/inward/record.url?scp=84874240281&partnerID=8YFLogxK
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U2 - 10.1109/CMD.2012.6416417
DO - 10.1109/CMD.2012.6416417
M3 - Conference contribution
AN - SCOPUS:84874240281
SN - 9781467310208
T3 - Proceedings of 2012 IEEE International Conference on Condition Monitoring and Diagnosis, CMD 2012
SP - 229
EP - 232
BT - Proceedings of 2012 IEEE International Conference on Condition Monitoring and Diagnosis, CMD 2012
T2 - 2012 IEEE International Conference on Condition Monitoring and Diagnosis, CMD 2012
Y2 - 23 September 2012 through 27 September 2012
ER -