A 3-bus system characterised by the following parameter values was used for the analysis: Input data (impedances in per- unit) BUS CODE From To 0 1 2 1 2 1 3 2 3 zo R 0.0 0.0 0.0 0.0 0 0.45 0.15 0.35 0.30 0.715 z1 R 0.0 0.0 0.0 0.0 0.0 0.35 0.30 0.120 0.10 0.20 2 0.0 Assume a bolted fault. FAULT ANALYSIS - 120 points Show a complete solution, answer in per unit. 1. Balance three phase fault at Bus 1 1.1. Total fault current - 10 points 1.2. Bus 2 voltage during fault - 10 points 1.3. Line current between Bus 2 and 3 during fault - 10 points 2. Single Line to Ground fault at Bus 1 2.1. Total fault current - 10 points 2.2. Phase "a" voltage at Bus 2 during fault - 10 points 2.3. Phase "a" current between Bus 2 and 3 during fault - 10 points 3. Line to Line fault at Bus 1 3.1. Total fault current - 10 points 3.2. Phase "b" voltage at Bus 2 during fault - 10 points 3.3. Phase "b" current between Bus 2 and 3 during fault - 10 points 4. Double Line to ground fault at Bus 1 4.1. Total fault current - 10 points 4.2.Phase "c" voltage at Bus 2 during fault - 10 points 4.3. Phase "c" current between Bus 2 and 3 during fault - 10 points