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This paper presents the optimization scheme to improve the interruption performance of a gas circuit breaker, which must carry out the interruption duty within specific arcing time for successful operation. The systematic process of design optimization was proposed by using the Bezier curve and sequential approximation technique for satisfying both medium and maximum arcing time. Depending on the...
Corona discharge due to a conductive particle in highvoltage system is analyzed using a coupled equation, which consists of Poisson's equation for electric field distribution and a discharge equation for space charge density variation. The charge of a conductive particle is calculated using the finite element method, and the electric force acing on the particle is obtained using the calculated result...
In the insulation design of an electric power apparatus, the triple junction which is a joining point of conductor, insulator, and gas should be considered carefully. At this point, three different materials are connected and the electric field intensity is not smooth. Local concentration of the electric field at this point can result in the surface flashover. Therefore, the accurate analysis of the...
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