Descrição
With the increase in the demand for electric energy, the difficulties of guaranteeing the
supply of this energy without interruptions and within the standards of quality determined by
PRODIST are also increased. To assist in supplying the demand, more and more methods, such
as distributed generation, are being used, most of those methods using unconventional electric ity generators, such as photovoltaic and wind power generators. Unconventional systems are
very susceptible to weather changes and work intermittently, damaging the traditional power
grid. Aiming to find ways to mitigate the problems of interruptions and intermittency, this work
presents a study in a known electrical network evaluating the impacts that the use of photo voltaic panels cause in the network, and with the help of the Volt/Var control method, reduce
the levels of fluctuation, and improve the quality of the power supplied. For cases where there
are problems that the Volt/Var control is not able to act, or prior to the insertion of distributed
generation, network changes are suggested, and tested, and energy storage systems are used to
support the network. It was possible to observe in cases where the Volt/Var method was used,
improvements in the fluctuation levels of the energy generated by photovoltaic generators and
also significant reductions in the number of operations performed by the network voltage regu lators. The simulations executed with the energy storage system were very beneficial, since the
system was able to correct problems of voltage sags during periods of light load of the system,
thus guaranteeing compliance within Brazilian voltage regulation levels.
