Sampled-Data-Based Dissipative Load Frequency Control for Multi-Area Power Systems With Transmission delays

This paper investigates sampled-data-based dissipative load frequency control (LFC) for multi-area power systems with transmission delays. Firstly, a decentralized delay-dependent LFC model for each area of a power system via sampled-data control is established. Secondly, under a strict (Q
0
, S
0
, R
0
)-dissipative framework, a stability condition dependent on the transmission delay and sampling period is proposed. Then, a exponential decay rate is introduced to guide LFC design for improving the frequency response dynamic performance. Thirdly, a strict (Q
0
, S
0
, R
0
)-dissipative LFC scheme is first presented, which includes the H
∞
, passive, mixed H
∞
and passive LFC schemes. Finally, single-area and three-area power systems are employed to show the effectiveness of the proposed scheme.