Analysis of a centralized control strategy in mitigating inter-area power oscillations

Adaptive optimal wide‐area controller for multi‐area power system using phasor measurement unit measurements

“…Tuning methods of WAPSS includes residue-based method [6,7], pole placement method [8][9][10], robust control [11,12] etc. Design of WAC based on linear quadratic regulator (LQR) or linear quadratic Gaussian (LQG) [13][14][15][16][17][18][19][20][21][22][23] controllers utilise state estimators to determine the dynamic states of the system. The fuzzy logic controllers [24,25] utilise the output signals, which have maximum observability on the inter-area modes and utilise a fuzzy rule to generate the required control signal.…”

“…Exciter-based centralised LQR controllers are implemented and analysed for a single machine infinite bus (SMIB) system, 2-area 4-machine and 5-area 16-machine system in [13,15,23], respectively. In [30], the advantages of a WAC based on LQR over an H ∞ controller are discussed.…”