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151066 https://hdl.handle.net/2286/R.I.15090 http://rightsstatements.org/vocab/InC/1.0/ All Rights Reserved 2012 xii, 64 p. : ill. (some col.) Masters Thesis Academic theses Text eng Singh, Iknoor Vittal, Vijay Ayyanar, Raja Hedman, Kory Arizona State University Partial requirement for: M.S., Arizona State University, 2012 Includes bibliographical references (p. 62-64) Field of study: Electrical engineering This thesis concerns with the impact of renewable generation resources on the power system stability. The rapidly increasing integration of renewable energy sources into the grid can change the way power systems operate and respond to system disturbances. This is because the available inertia from synchronous machines, which helps in damping system oscillations, gets reduced as an increase in renewables like wind and solar photovoltaics is accompanied by a decrease in conventional generators. This aspect of high penetration of renewables has the potential to affect the rotor angle stability and small signal stability of power systems. The system with increased renewables is mathematically modeled to rep-resent wind and solar resources. Transient and small signal stability studies are performed for various operating cases. The main conclusion drawn from the different studies is that increased renewable penetration causes a few instability problems, most of which are either localized and do not adversely affect the over-all system stability. It is also found that the critical inter-area modes of oscillations are sufficiently damped. Electrical Engineering Electric power system stability Renewable energy sources Effect of reduced system inertia due to increased renewable resource penetration on power system stability