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The renewed interest in the efficient use of energy, has made the use of speed control by frequency variation for flow control in pumping systems, has now become the most attractive option for this purpose, the which makes it necessary to obtain as accurately as possible energy saving in comparison with other mechanical means used for this purpose. This paper presents a mathematical procedure that reduces the limitations of application of laws affinity on systems with high initial static load for calculation of potential savings when employed these drives is developed. [ABSTRACT FROM AUTHOR]

Different methods of optimization have been used for the selection and localization of capacitor banks in distribution circuits. However, it is necessary to consider the distortion taken place by the harmonics of the no-linear loads and the possible appearance of resonances between the inductive elements of the system and the existent capacitor banks. On the other hand, it has not been integrated in a single methodology the use of capacitor banks and of passive harmonic filters to compensate the reactive power in harmonic polluted distribution systems. The present work intends as objective to develop this methodology. The developed program is based on the multiobjective optimization algorithm NSGA-II that it is proven with success in several examples. [ABSTRACT FROM AUTHOR]