Evaluating the impact of wind generation on the reliability of the electrical unified network of egypt

This paper presents a novel algorithm for the integration of wind generation with conventional power system for reliability studies. The algorithm is based on dividing the wind turbine generator (WTG) output power into corresponding four states. The mean time to fail (MTTF) and the mean time to repair (MTTR) are calculated for each state based on the generated power. A four-state model for WTG is then estimated using the calculated MTTF and MTTR for each state. The proposed model in this general form matches with the simulation techniques of conventional generating units for reliability analysis. The conventional generating units of the power system under the current investigation are simulated as a two state model using state duration sampling approach. A Mont Carlo simulation technique is adopted throughout the investigation for results verification. Recorded output results with conventional generating units are compared with integrated system composed of both conventional generation and wind energy included under the same load. The satisfactory agreement of results with the measured ones justifies the excellence of the proposed mathematical model.