TY - GEN
T1 - Polarization-depolarization current method for XLPE cable insulation diagnosis
AU - Liu, Haiyong
AU - Wu, Xiaodong
AU - Meng, Hailei
AU - Zhang, Kai
AU - Yan, Zhiwei
AU - Wang, Zhongyou
AU - Gao, Yuebo
AU - Li, Lisheng
AU - Su, Guoqiang
AU - Song, Baipeng
AU - Zhang, Guanjun
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - XLPE cable is now widely used in distribution network, and its insulation diagnosis is related to power grid reliability. Polarization and depolarization current (PDC) method is applied to evaluate degradation status of various aging overhead insulated lines. The experimental samples are originated from actual operation cables and laboratory accelerated aging cables, characterized by different operation time. In this paper, voltage resistance tests of actual cables indicate influences of aging on insulation degeneration. And XLPE samples are accelerated of 80 thermal aging, and then measured by PDC test at constant temperature condition. The obtained results indicate that with increasing of aging time, the impurities show that impurities polarization dominates the depolarization current, and characteristic parameter of aging factor is growing from "good"to "critical". Peak-differenating analysis confirms the evolution of aging trend, and functions as a temporal variation law. The verification results prove that PDC method is an effective and rapid access of degradation status assessment.
AB - XLPE cable is now widely used in distribution network, and its insulation diagnosis is related to power grid reliability. Polarization and depolarization current (PDC) method is applied to evaluate degradation status of various aging overhead insulated lines. The experimental samples are originated from actual operation cables and laboratory accelerated aging cables, characterized by different operation time. In this paper, voltage resistance tests of actual cables indicate influences of aging on insulation degeneration. And XLPE samples are accelerated of 80 thermal aging, and then measured by PDC test at constant temperature condition. The obtained results indicate that with increasing of aging time, the impurities show that impurities polarization dominates the depolarization current, and characteristic parameter of aging factor is growing from "good"to "critical". Peak-differenating analysis confirms the evolution of aging trend, and functions as a temporal variation law. The verification results prove that PDC method is an effective and rapid access of degradation status assessment.
KW - Aging factor
KW - Insulation diagnosis
KW - Polarization-depolarization current
KW - Voltage resistance test
KW - XLPE
UR - https://www.scopus.com/pages/publications/85100774245
U2 - 10.1109/CIYCEE49808.2020.9332565
DO - 10.1109/CIYCEE49808.2020.9332565
M3 - 会议稿件
AN - SCOPUS:85100774245
T3 - 2020 IEEE 1st China International Youth Conference on Electrical Engineering, CIYCEE 2020
BT - 2020 IEEE 1st China International Youth Conference on Electrical Engineering, CIYCEE 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2020
Y2 - 1 November 2020 through 4 November 2020
ER -