ASSESSMENT OF TRANSIENTS IN POWER SYSTEM WITH WIND GENERATORS BY APPLICATION OF PRONY METHOD

Wind power installations impact on power quality is crucial for power system operation. This paper presents modeling and simulation of an induction generator driven by wind turbine. Especially switching transients have been simulated and analyzed. Prony algorithm has been applied to determine signal parameters in different operation modes of wind generation unit. Detailed power quality studies on transients are helpful in better assessment of the phenomena. During the switching of capacitors transients occur [7], which are devastating for sensitive equipment, protection relays and insulation. Also the impact on power quality indices can not be neglected [5]. Transient overvoltages can theoretically reach peak values up to 2.0 pu. High current transients can reach values up to ten times the nominal capacitor current with duration of several milliseconds [8]. INTRODUCION