Publication: Polarization / depolarization current using simulation and field data to estimate for cable insulation degradiation
Date
2016
Authors
Mitraambigai Sivanandhan
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Abstract
Underground cable is intended for a sure span to be worked and hold its monetary worth. Notwithstanding, certain variables will add to the degradation of the cable. Corrupted cable will convey a high security danger to the distribution structure to breakdown and influence other hardware too. One of the approaches to access the insulation state of the underground cable is by calibrating its polarization and depolarization current (PDC). Polarization depolarization current monitoring system is a technique used to decide the dampness substance and corruption in the insulation of PILC and presence of water tree in XLPE cable. PDC measures the polarization current when the insulation is subjected to voltage and depolarization current, when the insulation is short circuited. Previously, PDC has been utilized for degradation in power transformer insulation system. In this paper, circuit representation has been created to represent the underground XLPE cable. The impact of thickness and conductivity value towards the degradation of underground cable is examined. The deliberate value of the underground cable and the estimated value of underground cable conductivity are contrasted with get the status of the specific underground cable. Along these lines, the utility can choose whether the cable can in any case be operational or should be supplanted.
Description
TK3351.M57 2016
Keywords
Electric cables , Electric insulators and insulation