Abstract

The simultanous faults are the faults which rarely occur in a practical power system. Anyway, it doesn't mean that they will never occur even though their probability is very low. In order to have a better view of power system status, we should also consider them. This paper will analysis the problem of two simultanous faults by using two-port networks. We will also display the steps to solve the general problem, in which, determining the bus impedance matrix is a very importance step. Then from that we can apply computer (for example, MATLAB software) to solve the problem efficiently.