Stable Adaptation in Multi-Area Load Frequency Control Under Dynamically-Changing Topologies

Multi-area load frequency control (LFC) selects and controls a few generators in each area of the power system an effort to dampen inter-area oscillations. To effectively such oscillations, it is required enhance lower activity dynamically during operation, so as adapt changing circumstances. Changing circumstances should cover not only parametric uncertainties unmodelled dynamics (e.g. aggregated bus dynamics), but also increasing structural flexibility modern systems protection mechanisms against faults cyber-attacks, or topology reconfiguration for demand response). As formal stability guarantees around attractive adaptive multi-area LFC concept are still lacking, this work proposes framework which adaptation switching combined provably stable way handle uncertainty, dynamics, dynamical interconnections system. Stability studied Lyapunov theory sense using standard structure-preserving modelling approach, resulting design validated IEEE 39-bus benchmark.