Damping effects of supplementary excitation control signals on stabilizing generator oscillations

Co-ordinated control of inter-area oscillations using SMA and LMI

“…The need to frequently retune PSSs has prompted investigation of techniques to adapt their operation to changing system conditions [10][11]. The methods investigated include statespace/frequency domain techniques [24][25], residue compensation [23], phase compensation/root locus of a lead-lag controller [19], [26][27], de-sensitization of a robust controller [28], pole-placement for a PIDtype controller [29], sparsity techniques for a lead-lag controller [30] and a strict linearization technique for a linear quadratic controller [31]. The diversity of these approaches can be accounted for by the difficulty of satisfying the conflicting design goals, and each method having its own advantages and disadvantages.…”

“…Shunt Data: Bus Number is the unique number used to identify the bus to which the shunt element is connected, the bus name is the unique name used to identify the bus to which the shunt element is connected, the base kV denotes the base voltage of the bus in kV, G_shunt represents the conductance of the shunt element in p.u., and B_shunt represents the susceptance of the shunt element also in p.u. .speed denotes the speed of the generator whose internal number is x */ mailbox [0].number [23] = genbc [4].speed mailbox [0].number [24] = genbc [5].speed mailbox [0].number [25] = genbc [8].speed mailbox [0].number [26] = genbc [9].speed mailbox [0].number [27] = genbc [12].speed mailbox [0].number [28] = genbc [13].speed mailbox [0].number [29] = genbc [14].speed mailbox [0].number [30] = genbc [15].speed mailbox [0].number [31] = genbc [16].speed mailbox [0].number [32] = genbc [17].speed mailbox [0].number [33] = genbc [18].speed mailbox [0].number [34] = genbc [20].speed mailbox [0].number [35] = genbc [23].speed mailbox [0].number [36] = genbc [25].speed mailbox [0]…”