Arc analysis at SF6 insulated systems

SF6 circuit breakers are used to open and close the power circuit at high voltage levels in transmission and distribution systems. Arcing phenomena is the fundamental process in SF6 circuit breakers. In this study, a simplified arc model is developed to analyse at SF6 circuit breaker nozzle arc behaviour. Mayr equation is developed for arc model in this study. This model is used to determine circuit breakers breaking ability and is simulated by means of Matlab Simulink. In this study voltage and current variations are obtained according to Mayr model parameters values and the results obtained are compared with the available data in literature.