Robust Decentralized LPV Control for Transient Stability of Power Systems

In daily operation of power systems, transient stability is targeted by designing local standard controllers for narrow operating ranges of any generating node. If deviations due to disturbances or a higher share of (uncertain) renewable energy occur, exemption routines are necessary for returning to nominal operation. This paper proposes a method for synthesizing local robust multivariable controllers such that the interaction between the grid nodes is explicitly considered. It is shown that variably parametrized controllers in conjunction with linear-parameter-varying models of the grid nodes can consistently stabilize the system. Since the control architecture is nevertheless decentralized, the design effort grows moderately with the size of the power system.