Power System Stabilization Using Energy Dissipating Hybrid Control
A new energy dissipating hybrid control framework is proposed in this paper. The proposed framework incorporates a plant with continuous dynamics connected in parallel with a hybrid controller that combines logical switches with continuous dynamics. The overall closed loop system can be described as a hybrid impulsive dynamical system in which the redundant energy preserved in the plant can be damped quickly and continuously due to the enhanced dissipativity of the closed loop system. The proposed framework is applied to design decentralized nonlinear excitation controllers for synchronous generators in a multimachine system to improve its transient stability, in which the synchronous generators are modeled as port controlled Hamiltonian systems. Simulation studies on the IEEE 10 generator, 39 bus New England power system are carried out to verify the effectiveness of the proposed energy dissipating hybrid excitation control to improve the transient stability and dissipativity of the interconnected power system under various fault conditions.
IEEE Transactions on Power Systems