Introduction to electrical energy sources and power system components. The one-line diagram. Models for transformers, generators and loads. Per unit quantities. Per unit calculations applied to power systems. Models of transmission lines. Transmission lines analysis: currents, voltages and power relationships at both ends. Reactive power compensation. Power flow analysis: problem formulation, Gauss-Seidal method, Newton-Raphson technique, decoupled power flow and DC load flow. Symmetrical 3-phase fault calculations. Symmetrical components. Unsymmetrical fault calculations.