Análise comparativa dos métodos de fluxo de potência de varredura direta-inversa usando soma de potências e soma de admitâncias aplicados a redes de distribuição de energia elétrica

Abstract

This work aims to present a comparative analysis between two methods of power flow through the direct-inverse sweep, one formulated for sum powers’s sum and the other for admittances’s sum. The methodology used for the development of this work was the implementation in Python programming language of both methods. Each method was applied to two distinct networks, the distribuition network of the Pici Campus of the Federal University of Ceará (UFC) and the other an IEEE 16 bus network. After the implementation of the methods and the collection of results, three important parameters were analyzed: The nominal voltage values in each bus, the iterations’s number and the processing time of each method. After the analysis of the results, it was verified that the nominal voltage values of each method are considered satisfactory for both modeled networks, for the Pici network the maximum percentage error relative to the rated voltage found was 3,5594% and the maximum angular difference was 0,2247 rad. For the IEEE 16 bus bars analyzed, the maximum percentage error relative to the rated voltage found was 0,7761% and the maximum angular difference was 4,4726 rad. Analyzing the number of interactions for the Pici network, both methods presented the same performance, requiring 3 iterations to reach the convergence criterion. For the IEEE 16 bus network, feeders 1 and 3 presented the same number of iterations, while feeder 2 in the admittance summation method, it required an additional iteration to reach the convergence criterion. The processing time of the power summation method in both networks was inferior to the admittance summation method, thus proving that for the analyzed situations the power summation method showed better performance.