Health Monitoring of Power Cable via Joint Time-Frequency Domain Reflectometry

Utilities are experiencing premature failures of power cables. In order to prevent electrical outages and to save on repair expenses, a nondestructive and nonintrusive condition assessment technique is highly desirable to evaluate the cable status and to predict the remaining life of a cable. In this paper, the capability of joint time-frequency domain reflectometry (JTFDR) as such a condition assessment technique is studied. The health status of three popular insulations in power system cables - cross-linked polyethylene, ethylene propylene rubber, and silicone rubber - is monitored using the JTFDR in a thermal accelerated aging test. The experimental results show that the JTFDR can successfully monitor the aging process of all three insulations. Then, the results from the JTFDR are compared with the results from the elongation at break (EAB); the results show that the JTFDR technique is comparable with the EAB and has a great potential as a nondestructive and nonintrusive condition assessment technique.

[1]  Ieee Standards Board,et al.  IEEE guide for multifactor stress functional testing of electrical insulation systems , 1991 .

[2]  G. Montanari,et al.  Application of oxidation induction time and compensation effect to the diagnosis of HV polymeric cable insulation , 1996 .

[3]  P. Nigrey.  Prediction of packaging seal life using thermoanalytical techniques , 1997 .

[4]  P. Castaldo,et al.  Condition assessment of cable insulation systems in operating nuclear power plants , 1999 .

[5]  H Lee Willis,et al.  Aging Power Delivery Infrastructures , 2000 .

[6]  C. Furse,et al.  Mixed-signal reflectometer for location of faults on aging wiring , 2005, IEEE Sensors Journal.

[7]  Jin Bae Park,et al.  Application of time-frequency domain reflectometry for detection and localization of a fault on a coaxial cable , 2005, IEEE Transactions on Instrumentation and Measurement.

[8]  S.B. Dalal,et al.  Aging of distribution cables in service and its simulation in the laboratory , 2005, IEEE Transactions on Dielectrics and Electrical Insulation.

[9]  C. Furse,et al.  Analysis of spread spectrum time domain reflectometry for wire fault location , 2005, IEEE Sensors Journal.

[10]  G. Mazzanti,et al.  Analysis of the Combined Effects of Load Cycling, Thermal Transients, and Electrothermal Stress on Life Expectancy of High-Voltage AC Cables , 2007, IEEE Transactions on Power Delivery.

[11]  A. Al-arainy,et al.  The Performance of Strippable and Bonded Screened Medium-Voltage XLPE-Insulated Cables Under Long-Term Accelerated Aging , 2007, IEEE Transactions on Power Delivery.

[12]  M. Gilany,et al.  Traveling-Wave-Based Fault-Location Scheme for Multiend-Aged Underground Cable System , 2007, IEEE Transactions on Power Delivery.

[13]  F. Aras,et al.  Aging of 154 kV underground power cable insulation under combined thermal and electrical stresses , 2007, IEEE Electrical Insulation Magazine.

[14]  Yong-June Shin,et al.  Diagnostics and Prognostics of Electric Cables in Ship Power Systems via Joint Time-Frequency Domain Reflectometry , 2008, 2008 IEEE Instrumentation and Measurement Technology Conference.

[15]  A. Cavallini,et al.  PD detection limits in extruded power cables through wide and ultra-wide bandwidth detectors , 2008, IEEE Transactions on Dielectrics and Electrical Insulation.

[16]  S. Boggs,et al.  Computation of PD calibration reflectograms in shielded power cable , 2008, IEEE Transactions on Dielectrics and Electrical Insulation.