Medição da vazão do rio Rancharia e estudo do melhor aproveitamento potencial hidrelétrico da usina

Abstract

The increased demand for electricity in Brazil has made alternative energy sources a viable option for power generation, they provide the decentralization of power generation, relieving existing transmission lines and providing savings / profit for the owner of a small plant. Considering the importance and the growth of this type of development in the country, this study aims to determine conditions of the hydroelectric potential of the former Usina Siderurgica Marumby Ltda - Usimar, located in Rio Branco do Sul / PR, disabled long and scrapped. Several methods to a small river flow measurement are discussed, pointing out their main characteristics, in order to perform the measurement, ease of application and accuracy. To determine the flow of the river Ranchi was the Spillway of the method chosen by already a adduction channel in place of the property, where all the river water flow can be diverted, facilitating its implementation. Rectangular, trapezoidal and triangular, three spillways were made. And made up to three daily measurements of the spillway elevation, allowing calculate the flow of the river. Then was performed the transposition of the Capivari river flow that was known and calculated the deviation in order to validate the results obtained. Having the time series of the flow of the last twenty-five years of the Capivari river was possible to transpose the time series of the river Ranchi, determining the average flow of the last twenty-five years. Consequently determining the coefficient of variation that is how the flow tends to disperse from the average, allowing suggest a strong flow around the mean and scale the hydroelectric excluding losses.