ABSTRACT

Short circuits should be studied both during the planning and the operation of an electric network. Short-circuit studies are particularly important during selection and design of the system conductors, system structures, and the relaying and protection system. The damaging effects of the faults are numerous and are mainly related to the high currents which can appear in the system. Usually, these current values can be several times the value of the normal operational current and can occasionally produce overvoltage phenomena.