Dr. Muzamir Isa
Associate Professor, School of Electrical System Engineering, Universiti Malaysia Perlis (UniMAP), Malaysia.
Topics: On-Site Partial Discharge Measurement and Characterization Using Rogowski Coil for Insulation Condition Monitoring in Medium Voltage Cable.
Abstract of speech: On-site partial discharge (PD) measurement tool, is one of the best methods in providing early detection before the occurrence of power breakdown in the major part of electrical distribution system. The repetition of PD operation at the defect site could cause insulation breakdown as the defect would extends until it crosses the electrodes between the insulation, and ended up with the entire network breakdown. In this work, an on-site PD measurement have been conducted at eight substation that used 11 kV cross link polyethylene (XLPE) underground power cables in order to assess the insulation condition that is based on the International Electro-technical Committee (IEC) 60270 standard. The Rogowski coil (RC) has been developed and used as a PD measuring sensor in this measurement. In order to figure out the capability of the proposed measurement technique, the 11 kV distribution network with real parameter has been modelled by using Electromagnetic Transient Program- Alternative Transient Program (ATP-EMTP). Next, the denoising process is based on Discreate Wavelet Transform (DWT) technique that has been conducted to discriminate between the interference noise and PD signal from the measured data. Meanwhile, the PD characterisation in terms of rise time, zero crossing, peak amplitude and resonant frequency has been statistically performed in MATLAB software environment. From the work conducted, it was found that, the technique and the RC sensor had indicated good significance for the PD measurement in both on-site and in modelling situations. Additionally, the innovative portable PD monitoring system, which is integrated with the RC sensor, provides a reliable system for early detection prior to power breakdown in the electrical distribution system in the future.
Brief biography
Muzamir Isa was born in Padang Besar, Malaysia in 1979. He received the first degree in electrical engineering from UniversitiTechnologi Malaysia (UTM), in 2001, and Master degree in electrical power engineering from Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia in 2004. In December, 2012 he received his doctoral degree in power systems & high voltage engineering from Aalto University, Helsinki, Finland. His research interests are partial discharge measurement, detection and location technique, and power system transient studies including EMTP simulation. Currently, he is working as Associate Professor at Faculty of Electrical Engineering Technology, Universiti Malaysia Perlis (UniMAP), Malaysia and actively involved in postgraduate supervision.