On the design of robust power system stabilizers

Robust decentralized control of power systems utilizing only swing angle measurements

“…These disturbances result in sustained oscillations which eventually set lower operational limits on power transfer levels. Approaches to design of power system stabilizers (PSSs) for damping of intersystem oscillations based on small-signal models have been proposed by Anderson and Fouad (1977), Chow (1988), Kunder et al (1989), Miri and Keyhani (1989), Othman et al (1989), Pai and Sauer (1989) and Smith et al (1989). However, these designs are inadequate for handling severe disturbances, which involve signi® cant variations in the system parameters and thus the operating point.…”

Wavelet-Based Power System Stabilizer

“…For instance, adaptive control strategies have been proposed to ensure system stability and suppress the low-frequency electromechanical oscillations in PSSs [12]. The coefficients of PSSs are tuned online according to the chosen design method, such as optimal linear control [13], generalized predictive control [14], pole placement technique [15], and minimum variance control [16]. However, most of these adaptive control techniques are difficult to be implemented [17].…”

Power system stabilizer design using H∞ robust technique to enhance robustnesse of power system

“…Since the wide area power system is large scale and highly nonlinear, and its network operating conditions experience frequently changes, the conventional PSS cannot stably compensate for changing multiple modes of power oscillations. Thus, many robust control techniques have been applied [1], [2][3] [4]. H = optimal control [5] and the structured singular value (SSV or fl) technique [6] have received considerable attention.…”