Write a computer program to calculate the three-phase fault current for a fault at F in Figure 1.16, with the network normal, and with one line at a time removed from service. The positive-sequence impedance data are given in the accompanying table. Use the commonly made assumption that all prefault resistance values are (1.0 + j 0.0) pu, and neglect all resistance values. Calculate the contribution to the fault flowing through the CB B1, and the voltage at that bus. For each calculated case, consider the two possibilities: CB B2 closed or open. The latter is known as the stub-end fault.

Problems 1.1 Write a computer program to calculate the three-phase fault current for a fault at F in Figure 1.16, with the network normal, and with one line at a time removed 20 Power System Relaying from service. The positive-sequence impedance data are given in the accompanying table. Use the commonly made assumption that all prefault resistance values are (1.0+j0.0) pu, and neglect all resistance values. Calculate the contribution to the fault flowing through the CB B and the voltage at that bus. For each calculated case, consider the two possibilities: CB B2 closed or open. The latter is known as the "stub-end fault Figure 1.16 Problem 1.1 System data for Figure 1.16 From To Positive sequence 0.0+j0.1 0.05j0.15 0.04 j0.2 0.01 jo.I 0.015 + j0.15 0.01 j0.19 0.01 +j0.19 0.03+j0.1 0.0+j0.08 6 6 6 Problems 1.1 Write a computer program to calculate the three-phase fault current for a fault at F in Figure 1.16, with the network normal, and with one line at a time removed 20 Power System Relaying from service. The positive-sequence impedance data are given in the accompanying table. Use the commonly made assumption that all prefault resistance values are (1.0+j0.0) pu, and neglect all resistance values. Calculate the contribution to the fault flowing through the CB B and the voltage at that bus. For each calculated case, consider the two possibilities: CB B2 closed or open. The latter is known as the "stub-end fault Figure 1.16 Problem 1.1 System data for Figure 1.16 From To Positive sequence 0.0+j0.1 0.05j0.15 0.04 j0.2 0.01 jo.I 0.015 + j0.15 0.01 j0.19 0.01 +j0.19 0.03+j0.1 0.0+j0.08 6 6 6