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Abstract
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This paper studies the theory and modeling manner of solid oxide fuel cell (SOFC) into power
network and its effect on small signal stability. The paper demonstrates the fundamental module, mathematical
analysis and small signal modeling of the SOFC connected to single machine infinite bus (SMIB) system. The
basic contribution of the study is to attenuate the low frequency oscillations by optimal stabilizers in the
presence of SOFC. To optimize the performance of system, fuzzy logic-based power system stabilizer (FLPSS)
is exploited and designed by particle swarm optimization (PSO) technique. To ensure the effectiveness of the
proposed optimal stabilizers, the simulation process takes in three scenarios of operating conditions. The
effectiveness of proposed PSO based FLPSS on the oscillations in the power system, including SOFC is
extensively demonstrated through time-domain simulations and by comparing FLPSS with the results of other
stabilizers approaches.
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