Coordination of power reactive management considering variations in wind speed from wind farms and power transmission limits

Resumo

This paper presents a methodology that allows performing the optimized and coordinated management
of reactive power injection in power systems with wind farms and other sources of reactive injection, such as
capacitor banks or static voltage compensators, minimizing the losses in the transmission power system. The
variation in wind speed is characterized by the Weibull distribution. The values of this distribution are used as
input data for the optimal power flow model whose output provides a sample of values for defining the
confidence intervals of the injected reactive power, as well as the voltage values in each bus of the electrical
system. The proposed methodology was tested using a real 140 buses system to determine the dispatch of
reactive sources available in the power system. The results found by the proposal can help to make a better
management of the available reactive sources in the real-time operation.