Describes the main computer modeling techniques that constitute the framework of modern power system analysis. After describing the main computational and transmission system developments influencing power system analysis, the book covers load or power flow, AC system faults and the electromechanical behavior of power systems. Dynamic models of power system plants and their use in multi-machine transient stability analysis are discussed. Chapters also cover the electromagnetic transients program, harmonic flow analysis, power system security and optimization analysis. Recent advances in interactive power system analysis and developments in computer graphics are also presented. The appendices cover the more basic aspects of power system theory, matrix analysis and numerical techniques to help newcomers pick up the relevant background.