STUDY OF WIND TURBINE ELECTRICITY QUALITY

Abstract

In this study examined the quality of electricity generated by wind turbines and its impact on the operation of the energy supply system. The research was conducted in a 73.5 MW wind farm consisting of 30 turbines in the southwest of Lithuania. The E-101 wind turbine was selected for the study, which has a tower height of 99 m, rotor diameter of 101 m, and a maximum generating capacity of 3.05 MW. Measurements were carried out using the Metrel MI 2892 Power Quality Analyzer and current measuring coils installed on high voltage cables. Wind speed and the power generated by the wind turbines were obtained from the monitoring SCADA system installed in the park. The study found that the voltage in the wind turbines varied on average from 645.0 V to 684.2 V as the wind speed changed from 0.6 m/s to 16.9 m/s, and the power generated by the turbines changed from 0 to 3.047 MW. Minor voltage fluctuations did not significantly affect the quality and stability of the medium voltage electricity network.