Serviços ancilares ofertáveis por usinas hidroelétricas e suas importâncias para uma matriz elétrica com alta penetração de fontes variáveis

Abstract

This monograph seeks to describe the state of the art in electric power systems, specifically regarding the ability of hydroelectric plants to provide ancillary services needed in the context of variable penetration of variable renewable generation (VRE).With VRE plants, new operating conditions are increasingly being demanded from the electrical system, creating a new level of ancillary services needs. These changes and peculiarities in the operation, generated by the VRE, have been the basis of studies, articles, standards and procedures prepared by different agents acting in the electrical system (system operators, regulators, concessionaires, academies, international agencies, etc.). Brazil fits into this context in a unique way, given its continental dimensions and diversity of sources in its electrical matrix, which provides high penetration rates of VREs. Fundamental concepts and the main modalities of ancillary services will be addressed, especially those potentially provided by hydroelectric plants. Some existing ancillary services markets will be analyzed in the context of the high penetration of renewable resources and the importance of hydroelectric generation in brazil in the context of the high penetration of variable renewable generation. Therefore, this paper aims, through a literature review, accompanied by critical analysis, to evaluate the potential use of hydroelectric plants to meet these new demanded services.