Palavra-chave: POWER SYSTEMS OPERATION

VOLTAGE STABILITY OPTIMAL POWER FLOW INTERIOR POINT METHOD SECURITY ANALYSIS PERFORMANCE INDEX CONTINGENCY ANALYSIS WARD EQUIVALENT CONTINGENCY RANKING HYDROTHERMAL GENERATION SCHEDULING MAXIMUM LOADING POINT HYDROTHERMAL INTERCONNECTED POWER SYSTEM POWER SYSTEMS PRIMAL-DUAL ALGORITHMS RENEWABLE ENERGY GENERATION NONLINEAR PROGRAMMING STEP OPTIMIZATION SENSITIVITY ANALYSIS HYDROELECTRIC-THERMAL GENERATION JACOBIAN MATRIX SINGULARITY POWER TRANSMISSION