- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Dielectric materials and actuators
- Electrical Fault Detection and Protection
- Lightning and Electromagnetic Phenomena
- Advanced Sensor and Energy Harvesting Materials
- Industrial Vision Systems and Defect Detection
- Thermal Analysis in Power Transmission
- Polymer Science and Applications
- Advanced Decision-Making Techniques
- Polymer Nanocomposite Synthesis and Irradiation
- Power Quality and Harmonics
- Semiconductor materials and devices
- Aerosol Filtration and Electrostatic Precipitation
- Image and Signal Denoising Methods
- Plant responses to water stress
- Neural Networks and Applications
- Material Properties and Applications
- Electrostatic Discharge in Electronics
- Nanotechnology research and applications
- Advanced Neural Network Applications
- Computational Physics and Python Applications
- Conducting polymers and applications
University of Technology Malaysia
2024
Universiti Malaysia Sarawak
2024
Hospital Universiti Sains Malaysia
2013-2022
Universiti Sains Malaysia
2012-2022
It is believed, by the addition of nano-filler into SiR/EPDM blends could further improve its electrical properties. In this paper, dielectric strength composite with Alumina for outdoor AC high voltage insulator has been investigated. Thus, specimen different loading concentration (1 Vol%, 2 3 4 Vol% and 5 Vol%) prepared. Decumyl Peroxide (DCP) 98% active as a vulcanize agent was used in composition. The composition nano -filler prepared heated two rolls mixer, MDR machine hot press...
The combination of polymer materials, such as silicone rubber (SiR) and ethylene propylene diene monomer (EPDM), has become one the potential developments new insulator with superior characteristics. SiR/EPDM a ratio 50:50 weight percentages had produced optimal electrical mechanical properties composites. However, study these balanced blends inclusion nanofillers remains limited yet to be completely explored. In current research, were prepared two types nanofillers, namely, Al <sub...
In this paper, the electrical tree characteristic of crosslink polyethylene (XLPE) containing Zinc Oxide (ZnO) nanofiller was reported. The concentrations in XLPE were varies from 1 wt%, 2 wt% and 3 wt%. needle-plane electrodes used investigation gap between mm. structure growth observed by using a digital camera microscope system. Obtained results show that inception voltage (TIV) increased with addition ZnO up to while slightly decrease TIV nanocomposites. propagation length also an...
This research evaluates the performance of edge-based segmentation methods in analysing two-dimensional (2D) electrical tree images obtained during high-voltage (HV) experiments. Non-uniform illumination 2D optical poses challenges accurately extracting and measuring original treeing image. Edge emerges as a promising solution to precisely distinguish structures from insulation background within Cross-linked polyethylene (XLPE) samples were subjected HV stress for real-time propagation...
Petroleum-based mineral oil has been used as insulator in high voltage transformer for more than a century. However, due to the environmental issue and since petroleum-based is going run out, many researchers nowadays have done research replace with vegetables oil. RBDPO (Refined, Bleached Deodorized Palm Oil), Soybean Oil, FR3 RBDP Olein are examples of vegetable oils that able Since there no reports on breakdown characteristic at various gaps oils, study essential. It important guideline...
The introduction of nano technology gives many benefits to the consumers and industries especially in cable insulators fabrication. This offers better life time resistance face failure. With inclusion filler unfilled polymer, it shows that has ability refining electrical, mechanical thermal properties compared polymer. In this paper, nano-alumina with amount 0 3 vol% was employed upgrade electrical tree silicone rubber (SiR). Electrical treeing inception propagation SiR without were studied....
Electrical tree is the one of phenomena that can initiate to electrical breakdown in polymeric insulating material. In this paper, structure growth Silicone Rubber (SiR) with different concentration nano-alumina has been observed. The test specimen samples were prepared by mixing SiR base polymer 0, 0.5, 1, 1.5, 2, 2.5 and 3 vol% nano-alumina. was investigated at apply voltage 8kVrms after inception under room temperature. influences investigated. result shows high probability occurrence...
Currently, XLPE is widely used in underground high voltage cable. Recently, a few nanofillers have been selected by numerous researchers to enhance the electrical tree resistance polymer matrix. In this paper, influence of ZnO and Al <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> on treeing investigated. The concentration loading are varies from 0.5 wt%, 1 wt% 1.5 wt%. needle-plane...
The effect of nanofillers on the electrical tree behavior polymeric materials, such as epoxy resin and polyethylene, has been investigated. Thus, research behaviour is extended but limited only to pure crosslinked polyethylene (XLPE) cable. Electrical properties are yet be explored under various types in XLPE. In this paper, characteristics XLPE containing zinc oxide (ZnO) nanofiller was reported. concentrations were varied 0.5, 1.0, 1.5 wt%. Needle-plane electrodes employed with 2 mm gap...
Electrical treeing is one of the main failure phenomena in cross-linked polyethylene (XLPE) cable insulation. Once tree initiates insulation, it starts to growth and finally leads breakdown. To date, silica nanofiller XLPE was limited study permittivity, dielectric loss, space charge, AC impulse breakdown strength partial discharge. The results from these cooperative tests show an improvement insulation properties over pure However, electrical containing are still uncertain. Therefore, this...
Electrical treeing occurred in solid dielectric materials, especially electrical application with high voltage. The occurrence of tree happens when electric fields applied, causing tiny channels or paths to form. main issue during the data collection process is changes lighting, making it difficult study tree's propagation length, fractal dimension, and growth rate due corrupted images. This research aims analyse structure images XLPE material using a CCD camera develop image de-noising...
This paper focused on studying the effect of addition Al 2 O 3 , TiO and BN nanofillers dielectric strength nanocomposite material. There are two types polymer blends used in this project which silicone rubber/EPDM PP/EPDM blends. Nanocomposites samples was blended at 50:50 ratios developed by compounding with without 5 wt% concentration BN. The results compared based performance properties each From weibull probability plot, blend shows higher dielectic to SiR/EPDM average value electric...
Electrical insulation is vital in high voltage apparatuses. The most common materials used commercial power cable are polymers such as low-density polyethylene (LDPE) and cross-linked (XLPE). Nevertheless, these have their own advantages disadvantages. use of LDPE alone, for example, could not sustain operating temperatures. Meanwhile, XLPE has crosslinking byproducts that cause degradation the material especially long run. Therefore, PE blends HDPE been proposed to exhibit characteristics...
Cross linked polyethylene (XLPE) is a polymeric material that has been used as insulator and it widely for underground cable nowadays. The may contain defects such void impurities due to imperfect manufacturing processes, exposed the moisture, which eventually could initiate occurrence of water tree under high voltage application. in lead breakdown power cable. By addition nanofiller, process formation be slow down. In this work, an experiment carried out investigate properties XLPE...
Abstract Electrical trees are the degradation events most linked with partial discharge (PD) activity in cross-linked polyethylene (XLPE) insulation of high voltage (HV) cables. To investigate tree structures and forms, study electrical for morphological analysis often carried out using optical microscopy. However, since noise induced by occlusion illumination, as well non-uniform intensity either from device’s setting or non-standard readout procedure, causes deterioration original...