High frequency AC characteristics of 132kV power cable

Chandan Kumar Chakrabarty, A. R. Avinash, A. G. Ahmad Basri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tangent Delta is an analytical method to determine cables insulation strength. It is a robust method to analyse aging of cables. Ideally the insulation (XLPE) acts as a perfect capacitor, the voltage and current are phase shifted 90°. Current through the insulation are purely capacitive (IC) with current leading voltage (V). Defects like contamination, scotching and void will add impurities in the insulation resulting in decrease of resistance of the insulation. This causes the increase in resistive current (IR) through the insulation making it no longer a perfect capacitor. A phase shift between the leading capacitive current (IC) and the voltage is utilized to determine the tangent delta (tan δ). Defects such as void in the insulation play a role in the electric field distribution in a cable. Simulation using Electromagnetic Computer Simulation Technology Studio (CST EM) displays a change in the electric field distribution and localization of the electric field. The changes in the Tan Delta, due to the presence of voids are then verified using HF Tangent Delta measurement method. Other cables with defects like scotching and contamination in the insulation (XLPE) will also be measured. The High Frequency AC setup utilizes a small testing environment due to the use of small length cables. This change will result in the reduction of total capacitance of the cable but this is overcome using High Frequency which is sufficient to create high electric stress on XLPE layer thus inducing measureable dielectric current. Tangent delta is obtained using the phase shift between leading current and applied voltage.

Original languageEnglish
Title of host publicationISTT 2014 - 2014 IEEE 2nd International Symposium on Telecommunication Technologies
EditorsMahamod Ismail, Nordin Ramli
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages429-435
Number of pages7
ISBN (Electronic)9781479959822
DOIs
Publication statusPublished - 02 Sep 2015
Event2nd IEEE International Symposium on Telecommunication Technologies, ISTT 2014 - Langkawi, Malaysia
Duration: 24 Nov 201426 Nov 2014

Publication series

NameISTT 2014 - 2014 IEEE 2nd International Symposium on Telecommunication Technologies

Other

Other2nd IEEE International Symposium on Telecommunication Technologies, ISTT 2014
CountryMalaysia
CityLangkawi
Period24/11/1426/11/14

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Cite this

Chakrabarty, C. K., Avinash, A. R., & Ahmad Basri, A. G. (2015). High frequency AC characteristics of 132kV power cable. In M. Ismail, & N. Ramli (Eds.), ISTT 2014 - 2014 IEEE 2nd International Symposium on Telecommunication Technologies (pp. 429-435). [7238249] (ISTT 2014 - 2014 IEEE 2nd International Symposium on Telecommunication Technologies). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISTT.2014.7238249