Queda de tensão em sistemas de distribuição de energia elétrica: modelagens e análises

Abstract

The steady state voltage is considered as one of the main topics when it comes to the quality of the electricity. This importance is evidenced by current legislation, defined by ANEEL through module 8 of PRODIST. Voltage drop in distribution systems is one of the factors that most directly impacts operating voltage levels and delivered to consumers. Concessionaires through prior analysis aim to regulate these voltage levels through preventive measures. Analyzes are mostly performed using power flow based algorithms, resulting in a need for hard to access data. Based on this premise and an approach of approximate methods of voltage drop calculations, this paper aims to investigate the reliability of these methods by comparing them with the backward-forward sweep method for power grids. of distribution. The analyzes are performed from the attempt to adapt IEEE test systems, 33 bars, in some of the approximate geometric configurations of the method to simulations with previously elaborated networks according to the geometric method configurations and the use of the kdrop factor. Simulations are represented by graphs showing nodal stresses and percentage error values comparing them to the reference method that will guide the reliability level and the use of methods for more elaborate procedures.