A escolha do volume inicial assumido para um reservatório: uma questão irrelevante?

Abstract

The influence of initial storage (V0) on the reservoir storage process has been object of a few studies and, as a result, one can find in literature some procedures to handle the problem. The most common are: start with full reservoir; start with a half full reservoir; making initial storage equal to final storage; choosing the initial storage by chance and computing the risk of emptiness for steady state conditions. In the present paper it was used Monte Carlo Method to find out the influence of the initial storage on reservoir yield, under different coefficient of variation of annual inflows (CV=0.2, 0.8 and 1.6). The results showed that for rivers with low values of CV, the question of initial storage is irrelevant; for rivers with high CV’s, however, different values of initial storage leads to complete different values of reservoir’s yields.