Máxima capacidade de hospedagem de geração distribuída considerando um modelo de otimização usando o método de injeção de correntes

Abstract

This article presents a novel deterministic methodology to determine the maximum distributed generation capacity in power distribution systems. In the proposed approach, an optimization problem is formulated to calculate the maximum amount of power to be accommodated in a power system without violating operational limits. For the proposed formulation, the current injection method equations are considered as equality constraints to compute the power flow solution. Maximum and mnimum limits for the voltage magnitudes are considered as inequality constraints, as well as the powers at each busbar and the reverse power flow at the utility substation. The optimization problem is solved via interior-point method. Aditionally, in order to account for uncertainties, the system loads are modeled using Gaussian probability density functions considering a statistical dipersion with respect to their nominal values. Computational simulations are conducted using a 23-bus distribution system. Several analysis are carried out, considering the generation units allocated dispersely in the grid to be evaluated, proving the efficiency and versatility of the proposed method.