The role of photovoltaic generators in low voltage residential voltage regulation: A comparison between standards

This paper studies different standards for the role of photovoltaic (PV) generators in voltage regulation in low voltage residential grids, in the interest of mitigating the voltage rise caused by the PV power injected into the grid. The analysis was made applying each standard to PV inverters inserted on a network, modeled with 24 hours load profile. The main parameters present or not in all standards were listed, and the simulations were conducted in order to highlight how each one differs or resembles from one another. The default method of voltage regulation is by altering the inverter power factor, and most standards follow the same behavior curve, only differing by the value of some of the parameters, which causes most of them to behave similarly. The IEEE standard is the only one to diverge, having no power factor delimitation. The Brazilian standard proves to be the strictest one.