Metodologias generalizadas de solução do fluxo de potência intervalar considerando dados incertos

Abstract

The analysis of the deterministic power flow is restricted to a single time instant. However, the active and reactive load powers, among others, vary constantly and affect the voltage profiles and line flows throughout electric power systems. Therefore, the deterministic model is not feasible due to a number of simulations required to represent all possible combinations of the variations involved in the problem. The interval mathematics can represent ranges of active and reactive power demand. As a result, through an interval power flow, the voltage profile at all nodes, the distribution of power flow in the branches and the losses in the interval form can also be calculated. It is therefore possible to perform a detailed analysis of the network taking into account the uncertainties under study. The purpose of this study is to model and implement the polar and the current injection interval power flow formulations incorporating the reactive power generation control on PV buses and voltage limit control on PQ buses. Various operating points are considered, including maximum loading point. The Monte Carlo simulation is used to validate the proposed methodologies.