Metodologia de balanço de energia para estimação de perdas não técnicas em redes de distribuição de energia elétrica com reconfiguração

Abstract

A constant challenge related to the Brazilian electric power distribution systems is the improvement of the calculation and management of losses occurring during energy transmission. Technical losses are inherent to energy distribution, while non-technical losses arise from various factors, including theft and fraud. Non-technical losses can lead to financial losses for utility companies, as the amounts are not recognized by the National Electric Energy Agency, in addition to potential maintenance costs for the network, since unplanned loads are improperly connected and may overload the grid. In light of this scenario, this article proposes a methodology for calculating non-technical losses in electric power distribution systems. This approach considers the energy balance, treating feeders that have undergone topology reconfiguration differently, demonstrating the importance of identifying these maneuvers for the calculation of the indicator, as the calculation performed by the regulatory body considers a static moment of the networks when calculating the amount of losses, neglecting the effect of these changes, and consequently introducing errors in the indicators. The results show that, under the evaluated conditions, reconfiguration can have a significant impact on non-technical losses, making the methodology meaningful for the improved estimation of non-technical losses.