Análise técnico-econômica para implantação de redes coletoras em parques de geração eólica

Abstract

With the constant advancement of technology, there is an increase in the size and power of wind turbines, impacting the development of wind farms. In electrical projects for these farms, higher turbine power leads to a reduced maximum number of machines per circuit, demanding an increase in the number of circuits in the wind farm and resulting in higher implementation costs. Taking that into consideration, this technical and economic feasibility study presents three distinct wind farm projects with the aim of comparing the implementation costs of the medium-voltage network (MVN) at 34.5 kV and 69 kV. Focusing exclusively on the MVN and considering only conductors and poles, it is noteworthy that all projects in the 69 kV version achieved a significant cost reduction, ranging from -44.73% to a remarkable -78.44% compared to their 34.5 kV counterparts. The findings of this study can inform discussions on changing the voltage level in medium-voltage collector networks from 34.5 kV to 69 kV. For a comprehensive analysis of this change and as a continuation of this study, it is essential to assess the technical and economic feasibility of other systems comprising a wind farm, such as the protection system for the network and turbines.