Analysis of grid connected induction generators driven by hydro/wind turbines under realistic system constraints

• Published in: IEEE transactions on energy conversion Vol. 5; no. 1; pp. 1 - 7
• Main Authors: Murthy, S.S., Jha, C.S., Rao, P.S.N.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-03-1990; Institute of Electrical and Electronics Engineers
• Subjects: 170602 > Wind Energy Engineering > Turbine Design & Operation; 240100 > Power Systems > (1990-); 299000 > Energy Planning & Policy > Unconventional Sources & Power Generation; Applied sciences; CAPACITORS; COMPUTERIZED SIMULATION; ELECTRIC GENERATORS; Electrical engineering. Electrical power engineering; ELECTRICAL EQUIPMENT; Electrical power engineering; ELECTRODES; ENERGY PLANNING, POLICY AND ECONOMY; Exact sciences and technology; Frequency; GRIDS; HYDRAULIC TURBINES; HYDRO ENERGY; INDUCTION GENERATORS; MACHINERY; Mesh generation; Power networks and lines; POWER TRANSMISSION AND DISTRIBUTION; Reactive power; SIMULATION; System performance; Theory. Simulation; TURBINES; TURBOMACHINERY 130700 > Hydro Energy > Power-Conversion Systems; Voltage; WIND ENERGY; Wind energy generation; Wind power generation; WIND TURBINES; Operation study; Hydraulic power; Wind energy; Computer simulation; Induction machine; Turbogenerator set
• ISSN: 0885-8969; 1558-0059
• DOI: 10.1109/60.50804

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.< >