Improving the quality of an optimal power flow solution by Taguchi method

Abstract This paper aims at improving the quality of an OPF (optimal power flow solution including power demand uncertainty. The goal is to obtain a best setting of the input which results in a performance characteristic of the output close to target with minimum variability. Here, a post-optimality procedure which incorporates the philosophv and the method of Taguchi is applied. Power demand variability is included in the analysis by means of the expected value of a loss function which is estimated by the Taguchi orthogonal arrays approach. The best and least sensitive solution over uncontrollable power system variability is selected by means of signal-to-noise ratios. The paper overviews the Taguchi approach, and illustrates the application of the method to improve the ‘quality’ of an OPF in Volving the IEEE 14-bus network.