Estudo da capacidade remanescente do escoamento de energia renovável no norte da Bahia utilizando o ANAREDE

Abstract

The increased interest in renewable generation projects brought to the energy market a concern regarding the ability of the Brazilian Interconnected System (SIN) to carry out the energy produced by these new plants. This occurs because the implementation time for transmission projects is longer than that for renewable sources plants. Thus, in order to avoid flow restrictions from contracted generators, studies of the remaining capacity margin of energy flow began to be carried out before the energy auctions were carried out, a scope admitted in the theoretical foundations of this work. As a goal, disabling projects that had transmission problems when they were planned to start operating. In this context, the work sought to bring a case study of the remaining capacity margin of five (05) buses geographically close to Sento Sé and Uburanas (Bahia), where the construction of the Serra da Gameleira wind complex is being studied. To carry out the study, data from the Brazilian Energy Research Company (EPE) were considered, as well as information based on a case of past operation of the SIN. The new Automatic Transmission Margin Calculation tool of the ANAREDE software was evaluated, whose main codes and implementation routines are presented. In the methodological structuring, Grid Criteria and Procedures of the National Electric System Operator (ONS) were admitted. It was found that the bus with the best performance has 37.5 MW of transmission margin and, therefore, has the capacity to carry out the flow of generation from one of the three wind farms with 31MW of power in the complex. It is worth mentioning that, for this case, the costs related to the connection between the substation of the wind farm and the bus with the highest margin were not considered, requiring additional planning and pre-operation studies