Estudo analítico para avaliação das perdas técnicas considerando o aumento da penetração da geração distribuída nas redes de distribuição

Abstract

This paper presents an analytical study of the technical losses in electric power distribution networks considering the increasing penetration of photovoltaic distributed generation. The simulations were conducted on the IEEE 13-bus reference feeder, using the OpenDSS software integrated with Python through the py-dss-interface library. The penetration sweep was carried out from 0 to 120% of the feeder’s total load, in steps of 10 %, for ten distinct connection points, covering threephase, two-phase and single-phase buses. The load profiles were obtained from ANEEL’s CTR System, filtered for the CELG utility, and the irradiation and temperature data were extracted from the NASA POWER API with the coordinates of Goiânia. The results show that highly loaded terminal buses provide the largest loss reductions, reaching 31.20% at bus 675, whereas buses on low-capacity lateral branches exhibit loss increases due to reverse power flow from moderate penetration levels onward. The results indicate that the regulatory methodology currently in force in Module 7 of PRODIST may underestimate the differentiated impact of distributed generation according to the connection point along the feeder.