Análise comparativa de viabilidade econômica da rede de baixa tensão entre topologia de inversor central e string para geração fotovoltaica: estudo de caso de uma usina fotovoltaica

Abstract

A solar photovoltaic power plant located in the Terra Nova, county, Pernambuco, was initially designed for the entire DC/AC electrical energy conversion to be carried out through string inverters. Therefore, its entire layout was developed considering equipment and components that make up the electrical installation when string inverters are used. However, due to the need to assess the lowest cost for implementing this plant, a new scenario was developed adopting the topology of central inverters. Thus, considering the growing use of centralized solar photovoltaic generation plants, this study aims to compare, from an economic perspective, the costs of low-voltage electrical installation using string inverter technology and central inverter technology. To achieve this, in order to assess the best plant topology for this solar facility, a analisys was conducted to describe the components of the low-voltage electrical installation and quantify them according to the specificity of each plant. Through the collection of these data, the impact on the total cost of the plant for each scenario could be calculated.