Dielectric Diagnosis of Extruded Cable Insulation by Very Low Frequency and Spectroscopic Techniques - A Few Case Studies

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Burjupati Nageshwar Rao
Dillip Kumar Puhan
Rajath Sharma

Abstract

This paper presents few case studies of condition assessment of extruded cables using very low frequency and spectroscopic techniques. Medium voltage distribution cables were assessed using VLF Techniques in addition to techniques like insulation resistance and spectroscopy. Few case studies of using low frequency partial discharge measurements for localisation of incipient faults are also presented and discussed. Studies indicate very low frequency tan δ and partial discharge techniques are promising tools for condition assessment of long length cables.

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How to Cite
Nageshwar Rao, B., Kumar Puhan, D., & Sharma, R. (2018). Dielectric Diagnosis of Extruded Cable Insulation by Very Low Frequency and Spectroscopic Techniques - A Few Case Studies. Power Research - A Journal of CPRI, 114–120. https://doi.org/10.33686/pwj.v14i2.144708

References

  1. Long-life XLPE-insulated power cables. Orton H, editor, Orton Consulting Engineers, Canada and Rick Hartlein, National Electrical Energy Testing Research and Application Center, USA.
  2. Wester FJ. Condition assessment of power cables by partial discharge diagnosis at damped AC voltages. Optima Grafische Communicatie; 2004 Dec 20.
  3. IEEE Std 400TM-2012, IEEE guide for field testing of shielded power cable systems rated 5kV and above.
  4. Puhan DK, Keri CD, Rao BN. CPRI experience in diagnostic testing and condition assessment of medium voltage power cable system. 14th India Double Power Forum.
  5. IEEE Std 400.2TM-2013, IEEE guide for field testing of shielded power cables using very Low frequency (less than 1Hz).
  6. Mallikarjunappa K, Ramaprasath S, Keri CD, Sudhindra A. Very low frequency tan delta testing and condition assessment of medium voltage polymeric cables.
  7. IEEE Std 400.3TM-2006, IEEE guide for guide for partial discharge testing of shielded power cables in a field environment.
  8. Puhan DK, Keri CD, Rao BN. On-site partial discharge diagnosis of power cables-case studies and field experiences. CABLETECH; 2017.