Dr Rahmat Ullah

(he/him)

AE, PhD

2025

• Khattak, I. M. et al., 2025. Characteristics investigation of R407C in high voltage applications as an alternative to SF6. Results in Engineering 27 106627. (10.1016/j.rineng.2025.106627)
• Ullah, R. et al. 2025. Feature extraction and classification of partial discharge signals in C4F7N-based gas insulated systems: a time-domain and machine learning approach. IEEE Transactions on Dielectrics and Electrical Insulation (10.1109/tdei.2025.3610575)
• Ullah, R. et al. 2025. Revitalising DC-aged silicone rubber composites: hybrid-silica/alumina triumph over multi-stress ageing. IET Nanodielectrics 8 (1) e70003. (10.1049/nde2.70003)

2024

• Ahmed, R. et al., 2024. Partial discharge characterization of HFO(E) gas using ultra-high frequency (UHF) antenna for medium voltage switchgear application. IEEE Access 12 , pp.81196 - 81205. (10.1109/ACCESS.2024.3411059)
• Ahmed, R. et al., 2024. The insulation performance of novel refrigerant gas as an alternative to SF6 for medium voltage switchgear. IEEE Access 12 , pp.47068-47079. (10.1109/ACCESS.2024.3382716)
• Boukhchana, A. et al., 2024. Optimal planning strategy for charging and discharging an electric vehicle connected to the grid through wireless recharger. Frontiers in Energy Research 12 1453711. (10.3389/fenrg.2024.1453711)
• Chaima, S. et al., 2024. A comparison between the ocean and offshore photovoltaic production system into microgrids: benefits and limits. Frontiers in Energy Research 12 1466133. (10.3389/fenrg.2024.1466133)
• Kumar, K. K. P. et al., 2024. A multi-energy inertia-based coordinated voltage and frequency regulation in isolated hybrid power system using PI-TISMC. Frontiers in Energy Research 12 1466165. (10.3389/fenrg.2024.1466165)
• Mustafa, E. et al., 2024. Degradation assessment of in-service transformer oil based on electrical and chemical properties. Applied Sciences 14 (24) 11767. (10.3390/app142411767)
• Ullah, I. et al., 2024. Analyses of RTV composite coating under DC stress for high voltage outdoor insulation. Presented at: 5th International Conference on Dielectrics (ICD) Toulouse, France 30 June - 04 July 2024. Proceedings 5th International Conference on Dielectrics (ICD). IEEE. (10.1109/ICD59037.2024.10613078)
• Ullah, R. et al. 2024. Enhanced partial discharge evaluation through integrated RF and IEC measurements. Presented at: 5th International Conference on Dielectrics (ICD) Toulouse, France 30 June - 04 July 2024. Proceedings 2024 5th International Conference on Dielectrics (ICD). IEEE. (10.1109/ICD59037.2024.10613117)
• Zhang, K. et al. 2024. Correlation method to explore corona discharge dynamics under DC harmonic voltages. Presented at: 5th International Conference on Dielectrics (ICD) Toulouse, France 30 June - 4 July 2024. Proceedings 2024 IEEE 5th International Conference on Dielectrics (ICD). IEEE. (10.1109/ICD59037.2024.10613204)

2023

• Ahmed, R. et al., 2023. Analysis of the insulation characteristics of hexafluorobutene (C 4 H 2 F 6 ) gas and mixture with CO 2 /N 2 as an alternative to SF 6 for medium-voltage applications. Applied Sciences 13 (15) 8940. (10.3390/app13158940)