Flicker Emission Analysis of a Wind Farm

In this paper is presented the criteria used by UTE, with respect to the Flicker emission of power plants; considering that this is one of the quality parameters monitored at the connection node. This work is focused in the flicker emission phenomenon. It sets out the criteria used to determine the emission limits for individual users connected to the distribution network. Additionally it presents a theoretical method, based on international standards, to estimate the total emission of flicker that will produce a wind farm in the connection node. The aim of this paper is to compare the theoretical emission flicker, with the field measurements in the connection node of a power generator. Here are calculated individual emission limits and the theoretical estimation of the flicker emission from a wind farm of 10MW connected to a network of 31.5kV. Finally, these values are compared with Pst and Plt parameters, short-term flicker disturbance factor and long-term flicker disturbance factor of the installation of wind turbines, which arise from a registry conducted in the field, with real data measured in the connection node of the wind farm.