Alocação integrada de bancos de capacitores e reguladores de tensão em redes de distribuição primária utilizando algoritmos genéticos

Abstract

This dissertation deals with the simultaneous voltage and reactive power (volt/var) control in electrical distribution feeders by the application of capacitor banks and voltage regulators. Since the volt/var planning is characterized as a multiobjective problem, the optimization strategy is based on the use of two genetic algorithms in a chained way: the first one provides capacitor placement, size and type (fixed or switched) in order to achieve power losses reduction, whereas the second defines placement and the operating taps of voltage regulators in order to reduce the voltage deviation in the bars, improving the network’s voltage profile. The fitness function’s formulation of each genetic algorithm takes into account costs minimization. The proposed methodology is evaluated for a 10-bus system from literature and the results from a 63-bus radial distribution network are also presented, which allow losses reduction and improvement of the voltage profiles. Moreover, a multiobjective genetic algorithm (SPEA2) is implemented in order to compare the performance of the methodologies in the volt/var problem’s solution.