3. For the power system shown, find short circuit level and short circuit current at the F1 & F2 points. 15MVA, X= 11%, T1 12KV/220KV G1 8MVA, X=9%, 11KV 6+j4 ohms/ KM FAULT F2 20км 8+j3 ohms/KM G2 5MVA, X=8% FAULT F1 "T2 10MVA, X=10% 12KV/220KV 10KV

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Z parameter

The Z-parameters that are the impedance parameters of a two-port network are defined by expressing the two-port voltages V1 and V2 in terms of two-port currents I1 and I2. The Z-parameters are calculated by open circuiting one of the two ports at a time henceforth they are called open-circuit impedance parameters.