Investigation on Partial Discharge of Power Cable Termination Defects using High Frequency Current Transformer

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Published: Nov 19, 2013
DOI: https://doi.org/10.37936/ecti-eec.2014121.170810
Keywords:
Cable termination PD measurement electric charge high frequency current transformer inception voltage partial discharge

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Cattareeya Suwanasri
Department of Electrical and Computer Engineering, Faculty of Engineering and The Sirindhorn International Thai - German Graduate School of Engineering ,King Mongkut's University of Technology North Bangkok, Bangkok
Thanapong Suwanasri
Department of Electrical and Computer Engineering, Faculty of Engineering and The Sirindhorn International Thai - German Graduate School of Engineering ,King Mongkut's University of Technology North Bangkok, Bangkok
Phanupong Fuangpian
Department of Electrical and Computer Engineering, Faculty of Engineering and The Sirindhorn International Thai - German Graduate School of Engineering ,King Mongkut's University of Technology North Bangkok, Bangkok

Abstract

This paper presents partial discharge (PD) investigation of different cable termination defects. The medium voltage power cables as rated of 3.6/6(7.2) kV are applied. Finite Element Method Magnetic (FEMM) program is used as a simulation tool for electric field stress investigation. The partial discharges patterns are detected by using a commercial High Frequency Current Transformer (HFCT). The simple cases for internal, surface and corona discharge are firstly observed in order to investigate the performance of the HFCT. Then eight different case studies of cable termination defects are further investigated, which includes non-terminator, voids between XLPE and stress control, 20 mm. overlaps between semiconductor and stress control, particles on XLPE, non-smooth XLPE, needle tip on insulation screen, impropriate cable bending, and proper termination. The results are then compared with the results from a conventional PD diagnosis tool according to IEC 60270 standard. The results of PD detection show that the commercial product can detect the PD waveform and measure the electric charge when it is highly enough. The test can also identify trends toward breakdown and there severity due to improper cable termination defects.

Article Details

How to Cite
Suwanasri, C., Suwanasri, T., & Fuangpian, P. (2013). Investigation on Partial Discharge of Power Cable Termination Defects using High Frequency Current Transformer. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 12(1), 16–23. https://doi.org/10.37936/ecti-eec.2014121.170810
Issue
Vol. 12 No. 1 (2014): Special Session from ECTI-CON 2013
Section
Electrical Power Systems

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