Robust H∞ load frequency control of multi-area power system with time delay: a sliding mode control approach

This paper is devoted to investigate the robust H
_∞
sliding mode load frequency control (SMLFC) of multi-area power system with time delay. By taking into account stochastic disturbances induced by the integration of renewable energies, a new sliding surface function is constructed to guarantee the fast response and robust performance, then the sliding mode control law is designed to guarantee the reach ability of the sliding surface in a finite-time interval. The sufficient robust frequency stabilization result for multi-area power system with time delay is presented in terms of linear matrix inequalities (LMIs). Finally, a two-area power system is provided to illustrate the usefulness and effectiveness of the obtained results.