GENERATION LOSSES DUE TO THE TEMPORAL FACTOR INFLUENCE IN LOAD LOSS: A STUDY CASE OF SHP REPI

• DOI: 10.22533/at.ed.317262221049

• Palavras-chave: Load loss, Roughness, Generation loss, Hydroelectric power plant, SHP.

• Keywords: Load loss, Roughness, Generation loss, Hydroelectric power plant, SHP.

• Abstract:

  In Brazil, hydroelectricity generation is responsible for 63.50% of the energy supply, which corresponds to 397,877 GWh.year-1. Being such a representative source to the electrical system, small percentage losses in the generation process may represent significant values. An increase of 1% in the intake system losses of the power plants results a reduction of 3,979 GWh.year-1. This value corresponds to the annual consumption of the metropolitan region of Ribeirão Preto, São Paulo. Over the years, the hydraulic system of the power plants increases its roughness, which has a direct impact on the system load loss. This work aimed to estimate the generation losses due to the increase in roughness of the REPI Small Hydroelectric Power Plant hydraulic system, in Wenceslau Braz, MG. The study started from the methodological proposal of Lima (2018), focusing on the critical period of the National Electric Sector (dry season), and concluded an increase in the load loss that ranged between 3% and 15%. The hydraulic system under study is complex and presents an intrinsic head loss of 14.06 m (13,7%), and could reach 29.86 m (29,2%) in the 32-year (1998 to 2020) time span. The energy analysis shows a reduction of 7.8% in the generation capacity in the same time frame, which significantly impacts the power plant's cash flow.

• Número de páginas: 12