Análise de diferentes abordagens para a regulação de tensão em linhas de distribuição com geração fotovoltaica

Abstract

The search for diversification of the energy matrix nowadays is something indispensable, among the several reasons that make it so important, the purpose of environmental preservation is certainly one of the ones that stand out. In this context, distributed generation, more specifically photovoltaic, has become a trend and its presence in distribution networks is increasingly common. It is evident that there are several positive aspects in the use of photovoltaic generation, however, for its benefits to be extracted in the best possible way, its technical aspects must be carefully studied, as it is known that the high penetration of energy due to distributed generation can lead to in the power flow reversivity of the feeder, causing overvoltage along the feeder. Thus, this work seeks to assimilate the disturbances caused by excessive photovoltaic penetration, focusing on overvoltage. Different scenarios will be built where the overvoltage disturbance is exposed, thus, voltage regulation methods are applied (on steady state) to circumvent the problem presented, such as: On Load Tap Changer (OLTC), Series Voltage Regulator, Reactive Bank, DSTATCOM and the inverter of the Distributed Generation. The objective is to carry out a comparative analysis between the methods for voltage regulation, both the classics and the new proposals presented in recent scientific publications. The results obtained are presented so that a qualitative analysis can present the advantages and disadvantages of each of the approaches studied.It was found that despite the differences of the studied approaches it was possible to solve the voltage regulation problem for the proposed scenario.