Small signal stability improvement via coordination of PSS's and SOFC power conditioner by PSO algorithm

The characteristics of fuel cell (FC) power generating system are basically different from the conventional synchronous generator. Their dynamic behavior is subjected by the specification of power conditioner and they do not have inertia. Therefore, it is important to investigate the effect of using solid oxide fuel cell (SOFC) generation on the power system dynamic performance. This paper surveys the impact of SOFC generation on the power system small signal stability in the presence of conventional generation units along with power system stabilizers (PSSs). Eigenvalue analysis and particle swarm optimization (PSO) algorithm are applied to tune the PSS parameters of conventional generator, power conditioner parameters of FC and power output of SOFC simultaneously in order to increase the small signal stability of power system.