TY - GEN
T1 - Temperature and thermal aging effects on the frequency domain spectroscopy measurement of oil-paper insulation
AU - Wang, Shiqiang
AU - Wei, Jianlin
AU - Yang, Shuangsuo
AU - Dong, Ming
AU - Zhang, Guanjun
PY - 2009
Y1 - 2009
N2 - Transformer oil-paper insulation system is continuously subjected to thermal stress which is a key factor inducing its deterioration. Dielectric response of oil-paper insulation in frequency domain is being gradually used by power utilities for assessing the condition of transformer oil-paper insulation system, and the Frequency Domain Spectroscopy (FDS) measurement is a promising method. It is important to understand the effects of temperature and thermal aging on FDS results for accurately assessing the condition of oil-paper insulation system. In this paper, the accelerated thermal aging experiments are performed on an oil impregnated pressboard sample at high temperature. Dielectric responses of sample in frequency domain are investigated during the aging process, and at the same aging condition, FDS measurements are repeated at different temperatures. Experiment results show that measurement temperature and thermal aging process significantly impact the FDS results of the oil impregnated pressboard sample in lower frequencies. The dissipation factors (tan.i), real capacitance and imaginary capacitance all increase with the increment of measurement temperature and thermal aging time, especially in lower frequencies.
AB - Transformer oil-paper insulation system is continuously subjected to thermal stress which is a key factor inducing its deterioration. Dielectric response of oil-paper insulation in frequency domain is being gradually used by power utilities for assessing the condition of transformer oil-paper insulation system, and the Frequency Domain Spectroscopy (FDS) measurement is a promising method. It is important to understand the effects of temperature and thermal aging on FDS results for accurately assessing the condition of oil-paper insulation system. In this paper, the accelerated thermal aging experiments are performed on an oil impregnated pressboard sample at high temperature. Dielectric responses of sample in frequency domain are investigated during the aging process, and at the same aging condition, FDS measurements are repeated at different temperatures. Experiment results show that measurement temperature and thermal aging process significantly impact the FDS results of the oil impregnated pressboard sample in lower frequencies. The dissipation factors (tan.i), real capacitance and imaginary capacitance all increase with the increment of measurement temperature and thermal aging time, especially in lower frequencies.
KW - Accelerated thermal aging
KW - Dielectric response
KW - Frequency domain spectroscopy
KW - Oil impregnated pressboard
KW - Temperature
UR - https://www.scopus.com/pages/publications/71049138573
U2 - 10.1109/ICPADM.2009.5252418
DO - 10.1109/ICPADM.2009.5252418
M3 - 会议稿件
AN - SCOPUS:71049138573
SN - 9781424443680
T3 - Proceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
SP - 329
EP - 332
BT - 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
T2 - 2009 IEEE 9th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2009
Y2 - 19 July 2009 through 23 July 2009
ER -