Title :
Analysis of grid connected induction generators driven by hydro/wind turbines under realistic system constraints
Author :
Murthy, S.S. ; Jha, C.S. ; Rao, P. S Nagendra
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India
fDate :
3/1/1990 12:00:00 AM
Abstract :
Results of an investigation dealing with the behaviour of grid-connected induction generators (GCIGs) driven by typical prime movers such as mini-hydro/wind turbines are presented. Certain practical operational problems of such systems are identified. Analytical techniques are developed to study the behavior of such systems. The system consists of the induction generator (IG) feeding a 11 kV grid through a step-up transformer and a transmission line. Terminal capacitors to compensate for the lagging VAr are included in the study. Computer simulation was carried out to predict the system performance at the given input power from the turbine. Effects of variations in grid voltage, frequency, input power, and terminal capacitance on the machine and system performance are studied. An analysis of self-excitation conditions on disconnection of supply was carried out. The behavior of a 220 kW hydel system and 55/11 kW and 22 kW wind driven system corresponding to actual field conditions is discussed
Keywords :
asynchronous generators; hydraulic turbines; power engineering computing; power transformers; transmission networks; wind turbines; 11 kV; 11 kW; 22 kW; 220 kW; 55 kW; GCIGs; computer simulation; digital simulation; frequency; grid connected induction generators; grid voltage; input power; lagging VAr; mini-hydraulic turbines; self-excitation conditions; step-up transformer; supply disconnection; terminal capacitance; terminal capacitors; transmission line; wind turbines; Capacitors; Frequency; Induction generators; Mesh generation; Reactive power; System performance; Voltage; Wind energy generation; Wind power generation; Wind turbines;
Journal_Title :
Energy Conversion, IEEE Transactions on
