[ I_f = \fracV_thZ_th + Z_f ] where ( Z_th ) includes generators (using subtransient reactance ( X_d'' )).
Base quantities: ( S_base ) (3-phase MVA), ( V_base ) (line-to-line kV).
Slide 1: Title – Load Flow Analysis Slide 2: Bus types (Slack, PV, PQ) Slide 3: Y-bus formation example (3-bus system) Slide 4: Newton-Raphson algorithm flowchart Slide 5: Convergence criteria (|ΔP|,|ΔQ| < 0.001) Slide 6: Class exercise – 4-bus system Slide 7: Solution & interpretation (voltage profile) power system analysis lecture notes ppt
Derived bases: [ I_base = \fracS_base\sqrt3 V_base, \quad Z_base = \frac(V_base)^2S_base ]
Critical clearing angle ( \delta_c ) increases with higher inertia, faster fault clearing. 8. Conclusion & Summary Tables (PPT Final Module) Key formulas card: [ I_f = \fracV_thZ_th + Z_f ] where
neglected for overhead lines.
[ I_a1 = \fracV_fZ_1 + Z_2 + Z_0 + 3Z_f ] [ I_f = 3I_a1 ] faster fault clearing.
[ \textpu value = \frac\textActual value\textBase value ]