Aplicação da técnica de controle automático de tensão para mitigar as perdas de produção de energia elétrica em usinas fotovoltaicas de minigeração conectadas ao sistema de distribuição em média tensão

Abstract

Brazil is immersed in a scenario of increasing consumption of electricity, but with scarce investment capacity in the power generation park, in addition to delicate environmental issues that accompany such investments. However, it is experiencing a growing use of distributed generation - DG, especially that of a photovoltaic solar nature, whether by the consumer who started to generate their own energy or the organizations that started to adopt this generation model to reduce the cost of their production processes linked to the use of electric energy, in both cases, benefiting from the government's fiscal and economic incentives. However, all this paradigm shift in the way of generating electricity requires studies of the impacts that this type of generation is susceptible to, in view of the precariousness of the rural primary distribution system of some electricity distributors, whether they are private, mixed or state capital. Thus, in this context, this work presents a case study of the use of the automatic voltage control technique - CAT in a rural feeder, in which a photovoltaic plant - UFV for mini-generation was installed, operating in the remote compensation mode under the terms of the electricity compensation system - SCEE adopted and approved by the National Electric Energy Agency - ANEEL, in such a way as to mitigate the harmful effects of critical or precarious voltage violations at the connection point of the user.