• Universiti Malaya High Voltage Lab (UMHVL)
  • h.illias@um.edu.my
  • +60379674483


A. H. A. Bakar, H. Mokhlis, H. Illias and D.N.A. Talib, Lightning Back Flashover Double Circuit Tripping Pattern of 132kV Lines in MalaysiaInternational Journal of Electrical Power and Energy Systems, Vol. 45, pp. 235-241, 2013. (ISI-Cited Publication)
A.H.A. Bakar, H. Moklis, M.K. Othaman and H.A. Illias, Identification of Failure Root Causes using conditioned based monitoring data on a 33 kV SwitchgearInternational Journal of Electrical Power and Energy Systems, vol. 47, pp. 305-312, 2013. (ISI-Cited Publication)
H. A. Illias, G. Chen, A. H. A. Bakar, H. Mokhlis, and M. A. Tunio, "Partial discharges within two spherical voids in an epoxy resin," Journal of Physics D: Applied Physics, vol. 46, pp. 1-10, 2013. (ISI-Cited Publication)
H.A. Illias, A.H.A. Bakar, H. Mokhlis, M.A. Tunio and G. Chen, "Partial discharge behaviours within a void-dielectric system under square waveform applied voltage stress," IET Science, Measurement and Technology, vol. 6(2), 2013, p. 52 - 62 (ISI-Cited Publication)


S. Z. Dabbak, H. A. Illias and B. C. Ang, "Effect of surface discharges on different polymer dielectric materials under high field stress," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 24, no. 6, pp. 3758-3765, Dec. 2017. (ISI-cited publication)
H.A. Illias, K.J. Mou, A.H.A. Bakar, "Estimation of Transformer Parameters from Nameplate Data by Imperialist Competitive and Gravitational Search Algorithms," Swarm and Evolutionary Computation, Vol. 36, pp. 18-26, 2017. (ISI-cited publication)
J.K. Wong, H.A. Illias and A.H.A. Bakar, "Classification of Partial Discharge Measured Under Different Levels of Noise Contamination," Plos One, vol.12, no.1, pp.1-20, 2017. (ISI-Cited Publication) DOI:10.1371/journal.pone.0170111 
W. J. K. Raymond, H. A. Illias and A. H. Abu Bakar, "High Noise Tolerance Feature Extraction for Partial Discharge Classification in XLPE Cable Joints," IEEE Transactions on Dielectrics and Electrical Insulation, vol.24, no.1, pp.66-74, February 2017. (ISI-Cited Publication)
H.A. Illias, G. Chen and P.L. Lewin, "Comparison between Three-Capacitance, Analytical-based and Finite Element Analysis Partial Discharge Models in Condition Monitoring," IEEE Transactions on Dielectrics and Electrical Insulation, vol.24, no.1, pp.99-109, February 2017. (ISI-Cited Publication)
H.A. Illias, G. Altamimi, N. Mokhtar and H. Arof, "Classification of Multiple Partial Discharge Sources in Dielectric Insulation Material using Cepstrum Analysis-Artificial Neural Network," IEEJ Transactions on Electrical and Electronic Engineering, vol.12, no.3, May 2017. (ISI-Cited Publication)


H. A. Illias, M.M. Lim, A. H. A. Bakar, H. Mokhlis, S. Ishak, M. D. M. Amir, "Classification of abnormal location in medium voltage switchgears using hybrid gravitational search algorithm-artificial intelligence," Plos One, vol. 16, no. 7, e0253967, 2021. (ISI-Indexed)
H.A. Illias, C.S. Su, A.H.A. Bakar, "Investigation on soil resistivity of two-layer soil structures using finite element analysis method," IET Science Measurement and Technology, vol. 15, no. 2, pp. 120 - 129, 2021. (ISI-Indexed)
M. A. C. M. Haniffa, K. Munawar, C. Y. Chee, S. Pramanik, A. Halilu, H. A. Illias, M. Rizwan, R. Senthilnithy, K. R. R. Mahanama, et al, "Cellulose supported magnetic nanohybrids: Synthesis, pysicomagnetic properties and biomedical applications-a review," Carbohydrate polymers, 118136, 2021. (ISI-Indexed)
M. A. C. M. Haniffa, M. Khadija, C. Y. Ching, H. A. Illias, C. H. Chuah, "Bio based poly (hydroxy urethane)s: Synthesis and pre/post functionalization," Chemistry An Asian Journal, vol. 16, no. 11, pp. 1281 - 1297, 2021. (ISI-Indexed)
W. J. K. Raymond, C. W. Xin, L. W. Kin, H. A. Illias, "Noise invariant partial discharge classification based on convolutional neural network," Measurement, vol. 177, no. 9, p.109220, 2021. (ISI-Indexed)


Hossain M.Z., Illias H.A. (2022). Binary power generation system by utilizing solar energy in Malaysia, Ain Shams Engineering Journal. 13(4). doi:10.1016/j.asej.2021.11.019
Ghunem R.A., Cherney E.A., Farzaneh M., Momen G., Illias H.A., Mier G., Peesapati V., Yin F. (2022). Development and Application of Superhydrophobic Outdoor Insulation: A Review, IEEE Transactions on Dielectrics and Electrical Insulation. 29(4), 1392-1399. doi: 10.1109/TDEI.2022.3183671.
D. Fahmi, H. Illias, H. Mokhlis and I. M. Yulistya Negara, "Particle-triggered Corona Discharge Characteristics in Air Insulation under DC Voltage," in IEEE Transactions on Dielectrics and Electrical Insulation, 2022, doi: 10.1109/TDEI.2022.3218519.


Ahmed, Nasiru Yahaya; Illias, Hazlee Azil; Mokhlis, Hazlie (2023). A protocol for selecting viable transmission line arrester for optimal lightning protection, ELECTRIC POWER SYSTEMS RESEARCH. 221, 109489. doi:10.1016/j.epsr.2023.109489
Aramugam, Kalaiselvi; Illias, Hazlee Azil; Ching, Yern Chee; Ali, Mohd Syukri; Makmud, Mohamad Zul Hilmey (2023). Optimal Design of Corona Ring for 132 kV Insulator at High Voltage Transmission Lines Based on Optimisation Techniques, ENERGIES. 16(2), . doi:10.3390/en16020778
Azam, S. M. Kayser; Othman, Mohamadariff; Illias, Hazlee Azil; Latef, Tarik Abdul; Islam, Mohammad Tariqul; Ain, Mohd Fadzil (2023). Ultra-high frequency printable antennas for partial discharge diagnostics in high voltage equipment, ALEXANDRIA ENGINEERING JOURNAL. 64(), 709-729. doi:10.1016/j.aej.2022.11.026
Chan, Jun Qiang; Raymond, Wong Jee Keen; Illias, Hazlee Azil; Othman, Mohamadariff (2023). Partial Discharge Localization Techniques: A Review of Recent Progress, ENERGIES. 16(6), 2863. doi:10.3390/en16062863
Fahmi, Daniar; Illias, Hazlee Azil; Mokhlis, Hazlie; Negara, I. M. Yulistya (2023). Negative DC corona patterns for different wire particle geometries in air insulation, ALEXANDRIA ENGINEERING JOURNAL. 73(), 635-649. doi:10.1016/j.aej.2023.04.068
Hossain, Md. Zahir; Illias, Hazlee Azil (2023). Combined binary and gasifier-based power generation from biomass and biowaste in Malaysia, JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY. 15(1), . doi:10.1063/5.0121423

Last Update: 05/10/2023