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Assessment of wind power impact on power system transmission losses

Large-scale wind power may change and vary the load flows in a power system. Thus, it also has an impact on the transmission losses. The traditionally used simulation cases may not be representative for analyzing the overall impact on losses. This paper suggests a screening method for determining the simulation cases to be used for the analysis of wind power impact on transmission system losses. The approach is based on the estimated load data series and wind power production data series for wind power scenarios. The power system losses in the end are estimated by power system load flow simulations. The suggested method is demonstrated and illustrated by the wind power integration study for Kazakhstan. The results of the case study indicate a decrease in power transmission losses in the case of wind power integration to the power system of Kazakhstan according to the studied wind power scenario.