For the 66kV subtransmission network shown below, calculate the following, using a MATLAB Simulink Power System Blockset model:

1. Three phase, phase-to-phase and phase-to-earth fault currents at the 22kV Bus at Substation B.  The answers should be given in Amps at 22kV.

2. The fault current flowing in Line A to B for a three phase and phase-to-earth fault on the 66kV Bus at substation C for the cases of:

i. Zero fault resistance

ii. A fault resistance of 10 ohms

The answers should be given in Amps at 66kV.

Data

2 REPORT AND ASSESSMENT

A report covering the following points should be submitted.

a. Power System Blockset model used.

b. Power System Blockset output reports.

c. The answers to 1 and 2 above.