HYBRID EXPERT-SYSTEM AND SIMULATED ANNEALING APPROACH TO OPTIMAL REACTIVE POWER PLANNING

The reactive power source planning problem has a significant influence on secure and economic operation in electric power systems. To achiev e both goals, system maximum security and minimum cost in operation, r eactive power planning is posed as a multiobjective optimisation probl em in terms of mathematical language. In the paper the authors present an effective algorithm based on hybrid expert system simulated anneal ing (ESSA) to circumvent the complicated planning problem. A more prac tical problem formulation with multiobjectives and constraints is pres ented. Then, ESSA. is introduced to search the global optimal solution considering both quality and speed at the same time. Simulation cases are used to evaluate the proposed algorithm.