Avaliação da máxima capacidade de hospedagem de geração distribuída em sistemas trifásicos de distribuição

Abstract

In this work, a methodology is presented to determine the maximum hosting capacity of distributed generation (DG) in unbalanced three-phase distribution systems. To achieve this objective, an optimization problem is formulated aiming to maximize the insertion of DG units, considering constraints related to voltage magnitudes at system buses, electrical losses and reversal power flow at the substation. Two distinct optimization algorithms, sequential quadratic programming and interior point method, are evaluated to solve the formulated problem. Results obtained through these two approaches are analyzed and compared within the context of the problem addressed in this dissertation, considering computational time and solutions obtained by both. In order to validate the proposed methodology and assess its applicability, computational simulations are conducted on a 13 node distribution test feeder considering different load scenarios to demonstrate that the maximum hosting capacity is influenced by network operating conditions. The simulations are performed using unbalanced system modeling in OpenDSS, with the optimization problem solved using MATLAB.