Decentralized LFC tuning for power systems with communication delays

Decentralized load frequency control (LFC) for multi-area power systems with communication delays is studied in this paper. The TDF-IMC-PID tuning method is adopted to handle the constant delays. A method to analyze the stability of a multi-area power system with communication delays under a decentralized LFC is derived by accounting the inherent structure of the multi-area power system. Decentralized LFC tuning on a two-area and a three-area power system shows that the proposed method is easy to apply and good damping performance can be achieved.