ABSTRACT
The fault analysis of a power system is required in order to provide information for the selection of switchgear, setting of relays, choice of conductors and stability of system operation. Balanced three-phase faults may be analyzed using an equivalent single-phase circuit. With asymmetrical three-phase faults that create severe unbalanced operating conditions, the use of symmetrical components helps to reduce the complexity of the calculations as transmission lines and components are by and large symmetrical, although the fault may be asymmetrical. The fault analysis is detailed in this chapter.
