PowerWorld -A Software Approach to Transmission Line Fault Analysis

AbsuudThe falllt aulysis is doae for the three phase sym••etric2I fa.at •• d die a~ halts.. TlIe unsymmetrical faults include siagie _ to grouod., tiBe to liDeaJIddoable tiae to grouad &lilt. llae metllod employed is bllS i_pedaatt matrix wIIidt bas certain advantages over tlleveaUa's equivaleat _dbocL The advautage of this approach over coaveatioeal metllod is to make the analysis of three typical un-symmetrical faults, namely single-line-to-ground fault, line-to-line fault and double-line-to-ground fault more unified. So it is aa~ to camberso_dy coaaed dlrcc seqllCllce networks ",hen calculating the fauft voltagesat acb bus and fault carn:ats flowiag from otIe bas to its neigbboriag bas. Tile resalts have beea obbiaed using the POWERWORLD Simulator, which usesthe method of Bus Impedance i\'btriL