Silikon getah merupakan penebat polimer yang digunakan secara meluas dalam
aplikasi voltan tinggi kerana ciri-ciri penebat elektrik yang baik dan boleh menahan suhu
yang tinggi. Penebat polimer didapati mempunyai fenomena degradasi selepas
penggunaan yang lama dan membawa kepada kerosakan. Pokok elektrik didapati
merupakan salah satu punca kerosakan kabel. Nano-alumina didapati dapat menghalang
pertumbuhan pokok elektrik. Namun, taburan medan elektrik dalam pokok elektrik masih
tidak diketahui secara meluas. Oleh itu, projek ini akan mengkaji taburan medan elektrik
dalam bahan-bahan penebat dengan menggunakan perisian “Finite Element Method”
(FEM), Comsol Multiphysics. Penyiasatan mengenai taburan medan elektrik di dalam
penebat Silicon getah yang mengandungi pelbagai kepekatan nano-alumina dikaji.
Hasilnya, keamatan medan elektrik jatuh dalam nano-alumina itu. Keamatan medan
elektrik pada antara muka semakin meningkat apabila kepekatan alumina menigkat
disebabkan perubahan dalam jarak antara partikel. Akhir sekali, output projek ini dapat
dibandingkan dengan eksperimen yang telah dilakukan oleh pengkaji-pengkaji terdahulu.
Projek ini akan memberi pengetahuan dan pemahaman mengenai taburan medan elektrik
di dalam pokok elektrik.
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Silicon Rubber is a polymer insulator that is widely used in high voltage
application due to its good electrical insulating properties and can withstand high
temperature. Polymer insulators were found having degradation phenomena after long
time usage and lead to breakdown. Electrical treeing is found as one of the causes of the
cable breakdown. Nanofiller is found effective in inhibiting the electrical treeing growth
during experiment setup. However, the electric field distribution in electrical treeing are
still not well known. In this project, the simulation model of electrical treeing setup is
developed and successfully executed. The electric field distribution containing various
concentrations of nano-alumina in insulating materials is investigated using pin-plane
electrodes model by using Finite Element Method (FEM) software, Comsol Multiphysics.
As a result, the electric field intensity drops within the nanofiller. The electric field
intensity at interface is increasing when concentration of nano-alumina increases due to
changes in interparticle distance. Lastly, the output of this project can be compared with
the experimental setup done by previous works. This project will give understandings
about the electric field distribution in electrical treeing.
Electric field analysis along pin-plane electrodes in SiR containing / Muhammad Saiful Zakariah