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Electric Field Optimization using the NURB curve in a Gas-Insulated Switchgear  

Han, In-Su (한국철도기술연구원 차세대고속철도기술개발사업단)
Kim, Eung-Sik (호서대학교 안전보건학과)
Min, Suk-Won (순천향대학교 전기통신학과)
Lee, June-Ho (호서대학교 전기공학부)
Park, Jong-Keun (서울대학교 전기공학부)
Lee, Tae-Hyung (한국철도기술연구원 차세대고속철도기술개발사업단)
Park, Choon-Soo (한국철도기술연구원 차세대고속철도기술개발사업단)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.3, 2009 , pp. 548-558 More about this Journal
Abstract
This paper attempts to develop an algorithm which optimizes the electric field through the so-called NURB(Non-Uniform Rational B-spline) curve in order to improve the insulation capacity. In particular, the NURB curve is a kind of interpolation curve that can be expressed by a few variables. The electric field of a conductor is computed by Charge Simulation Method(CSM) while that of a spacer by Surface Charge Method(SCM); this mixed calculation method is adopted for the electric field optimization. For calculation of the initial and optimal shapes, the Gauss-Newton method, which is quite easy to formulate and has slightly faster convergence rate than other optimization techniques, was used. The tangential electric field, the total electric field, and the product of the tangential electric field and area (Area Effect) were chosen as the optimization objective function by the average value of electric field for the determined initial shape.
Keywords
NURB; Area Effect; Electric Field Optimization; Spacer; Gas-Insulated Switchgear;
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