DECENTRALIZED CONTROL OF LARGE-SCALE POWER-SYSTEMS WITH UNKNOWN INTERCONNECTIONS

Decentralized stabilization and control schemes for large-scale power systems are presented in this paper. The interconnections between the subsystems are assumed to be unknown, but bounded. The control design for the first scheme utilizes the knowledge of the bounds on the inter connections between the subsystems, whereas this information is not re quired in the second control design due to its adaptive nature. These schemes are applied to a power system with two generators and an infin ite bus connected through a network of transformers and transmission l ines. Simulation studies for unknown interconnections arising due to f aults and subsequent line switchings in the transmission network are c arried out. The studies not only illustrate the simplicity of the deve loped controls, but also validate the fact that connective stability a nd robust performance is maintained for unknown interconnection topolo gy using these schemes.