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Optimization of a Grounded Electrode Shape in Gas Insulated Switchgear with a Reversely Elliptical Permittivity Graded Insulator

Title
Optimization of a Grounded Electrode Shape in Gas Insulated Switchgear with a Reversely Elliptical Permittivity Graded Insulator
Author
김동규
Keywords
Functionally graded material (FGM); gas insulated switchgear (GIS); FGM spacer; triple junction; optimization; SPACER CONFIGURATION; OPTIMAL-DESIGN
Issue Date
2013-10
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Citation
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2013, 20(5), P.1749-1754
Abstract
An application of a functionally graded material (FGM) to the solid spacer in gas insulated switchgears (GISs) can reduce the electric field concentration at the specific region, for example, the anode or the interface between the spacer and the gas. However, the electric field stress near the triple junction of the grounded electrode with a rounded shape, which remarkably affects the insulation capability of the GIS, inversely related. Therefore, in order to prevent this, it is necessary to modify the grounded electrode geometry in the common Cubicle-GIS and apply the elliptical FGM spacer with a reverse-direction variation unlike the permittivity variations of the existing unidirectional or bidirectional distributions. In this paper, we found the proper distribution of dielectric permittivity, dug a groove in the grounded electrode near the triple junction, and performed the optimization of this grounded electrode configuration by using the design of experiments (DOE). Consequently, the electric field stress in the triple junction of the grounded electrode can be effectively reduced by using the optimally designed grounded electrode shape applying the FGM spacer.
URI
http://ieeexplore.ieee.org/abstract/document/6633705/http://hdl.handle.net/20.500.11754/44576
ISSN
1070-9878; 1558-4135
DOI
10.1109/TDEI.2013.6633705
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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