A Comparison Between Backstepping and ClasicalApproach for Design of a Power System Stabilizer

This paper deals with improvement of transientstability of power system under the effect of a symmetrical threephase fault by means of a backstepping control. The mostimportant characteristic of this technique is its capability forestimating uncertain parameters existing in system s model of apower system. Nonlinear models are utilized directly fordesigning process, which improves the robustness of controlledsystem's transient stability. Since fault for the near point ofgenerator is more important, two points near of generator aredetermined for analysis. A comparison between backsteppingand classical technique shows those nonlinear controllers dampsthe oscillations quickly and are superior to operate as a PowerSystem Stabilizer (PSS). The advantages of backsteppingapproach are clearly illustrated by numerical simulation withMatlab software of the Single-machine infinite-bus (SMIB)power system.

کلیدواژه ها:

Backstepping ، Nonlinear control ، Power SystemStabilizer ، SMIB ، Transient Stability