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Journal of Applied Sciences
  Year: 2014 | Volume: 14 | Issue: 14 | Page No.: 1506-1513
DOI: 10.3923/jas.2014.1506.1513
 
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Experimental Investigation on Insulation Integrity of Cross Linked Poly Ethylene (XLPE) Cables Due to High Voltage High Frequency (HVHF) Transients Using Double Tuned Circuit Technique

S. Venkatesh, S. Mohamed Ghouse and S. Natarajan

Abstract:
In the context of recent advances in modern power systems that utilize power electronic components for power delivery, cables are prone to High Voltage High Frequency (HFHV) oscillations which may be as a consequence of resonance, over-voltages due to fast switching operations etc., leading to undesirable degradation of insulation. Further, a few current studies by researchers have revealed that there is need for alternate strategies other than the classical insulation integrity tests that need to be formulated to study the degradation of insulation systems due to the influence of high frequency high voltages. In this research, studies are carried out to analysis the breakdown characteristics of cross linked polyethylene (XPLE) insulated power cable by subjecting HVHF oscillations generated using double tuned circuit. HVHF oscillations are generated in the form of damped oscillations and applied to XLPE cable insulation. Breakdown performance due to different ranges of high frequencies are generated and applied as repetitive HVHF oscillation on XLPE cable samples. The same sample is also subjected to high voltage with 50 Hz power frequency, switching and lightning over-voltages for carrying out detailed comparison on the breakdown characteristics. Further, analysis is also carried out to compare breakdown voltage characteristics of the XLPE insulation for varying HFHV oscillations that are most prevalent in systems pertaining to distribution voltage levels.
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How to cite this article:

S. Venkatesh, S. Mohamed Ghouse and S. Natarajan, 2014. Experimental Investigation on Insulation Integrity of Cross Linked Poly Ethylene (XLPE) Cables Due to High Voltage High Frequency (HVHF) Transients Using Double Tuned Circuit Technique. Journal of Applied Sciences, 14: 1506-1513.

DOI: 10.3923/jas.2014.1506.1513

URL: https://scialert.net/abstract/?doi=jas.2014.1506.1513

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