Sistema de conexão de mini e micro centrais hidrelétricas às redes monofásicas das concessionárias

Abstract

The objective of this work is to develop a connection system between three-phase generation units and a single phase rural distribution electricity network. The proposed system is based on an AC/AC converter. This converter consists in a threephase PWM rectifier and a single-phase PWM inverter. System control is performed by a Digital Signal Controller (DSC). Currently, the cost for connecting mini and micro hydropower plants to distribution networks of utilities is very high, especially because of the three phase distribution networks deployment cost, which generates impact mainly in small businesses. For larger businesses, this cost is diluted within the total work costs, not significantly impacting business viability though. This work aims at developing a system that meets the technical and legal connection requirements and, at the same time, will be capable of reducing costs for connecting small generating agents in the national power system in locations where only a single-phase network is available. Therefore, we intend to make economically viable insertion of small producers in the generation and sale electricity scenario.