Journal of Electrical Engineering and information Science

The Korean Institute of Electrical Engineers (대한전기학회)
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New Sliding Mode Observer-Model Following Power System Stabilizer Including CLF for Unmeasurable State Variables

  • Lee, Sang-Seung (School of Electrical Engineering, Seoul National University) ;
  • Park, Jong-Keun (School of Electrical Engineering, Seoul National University)
  • Published : 1997.06.01
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Abstract

This paper presents the sliding mode observer-model following (SMO-MF) power system stabilizer(PSS) for unmeasurable state variables. This SMO-MF PSS is obtained by combining the sliding mode-model following (SM-MF) including closed-loop feedback(CLF) with the full-order observer(FOO). The control input of the proposed MO-MF PSS is derived by Lyapunov's second method to determine a control input that keeps the system stable for unmeasurable plant state variables. Simulation results show that the proposed SMO-MF PSS including CLF is able to reduce the low frequency oscillation and to achieve asymptotic tracking error between the reference mode state and the estimated plant state at different initial conditions.

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