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- 저자 : Duvvada Deepak Chowdary (검색결과 1 건)
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Gundavarapu Venkata Nagesh Kumar,Polamraju V. S. Sobhan,Pakalapati Janaki,Duvvada Deepak Chowdary,Bali Sravana Kumar 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.2
The establishment of supporting insulators plays a vital role in the continuous operation of the three-phase Gas Insulated Busduct (GIB), which primarily depends on the distribution of electric fi eld stress on the spacer surface. Shape control is a technique used along the spacer surface to achieve uniform fi eld intensity, but this technique can also lead to very irregular shapes. The Triple Junction (TJ) is the region where the fi eld stress has to be reduced. Over a period, high fi eld stresses along the spacer surface will result in a surface fl ashover and thus de-energize the complete GIB, leading to enormous losses economically. In this paper, a Functionally Graded Material (FGM) spacer for a three-phase GIB has been designed with more number of gradings and further fi eld stress at TJ is minimized by inserting and reshaping the metal inserts (MI) at the end of the enclosure. By doping them with diff erent permittivity values, functionally graded materials are spatially distributed with multiple fi ller materials to achieve uniform stress on the electric fi eld. Simulation is carried out with the FGM and epoxy (post type) Spacers for diff erent voltages and FGM gradings. With MI, the stress is minimized and an enhanced uniform fi eld allocation along the surface is obtained.
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