Mardianaliza Othman
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Mardianaliza Othman
Official Name
Mardianaliza, Othman
Alternative Name
Othman, Mardianaliza A.
Othman, Mardianaliza
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Scopus Author ID
57235542000

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  • Publication
    Review on RTV silicone rubber coatings insulator for transmission lines
    (IOP Publishing Ltd., 2020)
    Siti Huzaimah Kamal Hamadi
    ;
    Muzamir Isa
    ;
    Syahrun Nizam Md Arshad @ Hashim
    ;
    Mardianaliza Othman
    Nowadays, the usage of RTV Silicone Rubber as Insulator coatings are increased due to its advantages to avoid pollution flashover of contaminated insulator. Besides, the coatings can reduce the maintenance cost and scheduled routine. This paper had introduced the advantage of RTV Silicone Rubber coatings on insulator, such as good adhesion, nominal thickness range and good hydrophobicity. There are three method of coatings application, such as brushing, spraying and dipping. Suitable method is used to specific insulator application. Meanwhile, this paper also explained about installation of coated insulator in the field.
      2  15
  • Publication
    Simulation analysis for 33 kV porcelain insulator string based on room temperature vulcanize coating
    (IEEE, 2023)
    Mardianaliza Othman
    ;
    Siti Huzaimah Kamal Hamadi
    ;
    Muzamir Isa
    Porcelain insulator is widely used in high voltage (HV) transmission lines due to its high mechanical strength, performing well on heat and aging resistance. However, porcelain insulator string is always exposed to environmental contamination. The presence of accumulation contamination on the porcelain insulator string surface reduces the electrical performance and causes insulation failure in transmission and distribution lines. Literature has shown that the conventional method to prevent contamination is limited to periodically water washing and silicone grease, involving some limitations in practice from the technical and economic point of view. Therefore, this research investigates the performance of porcelain insulator string due to the contamination effect based on Room Temperature Vulcanize (RTV) coating in 33 kV transmission line system. The four-unit porcelain insulator string in 2-D form was first developed using computer-aided design (CAD). Electric field and voltage distribution results were analysed using finite element method (FEM) software. After adding RTV coating, the percentage decrement of electric field distribution value is 9.73% from the study. This has proven that the porcelain insulator string with a significantly lower electric field distribution may protect the transmission lines from a higher risk of corona or even flashover.