Stabilizing a multimachine power system via decentralized feedback linearizing excitation control

• Published in: IEEE transactions on power systems 1993-08, Vol.8 (3), p.830-839
• Main Authors: Chapman, J.W., Ilic, M.D., King, C.A., Eng, L., Kaufman, H.
• Format: Article
• Language: English
• Subjects: 240100 - Power Systems- (1990-); COMPUTERIZED SIMULATION; CONTROL EQUIPMENT; Control systems; ELECTRIC CONTROLLERS; ELECTRIC GENERATORS; ENERGY SYSTEMS; EXCITATION SYSTEMS; FEEDBACK; Linear feedback control systems; Power measurement; Power system control; Power system measurements; Power system modeling; Power system simulation; POWER SYSTEMS; POWER TRANSMISSION AND DISTRIBUTION; SIMULATION; STABILIZATION; State feedback; State-space methods
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/59.260921

A new controller for the generator excitation system is described that uses a combination of feedback linearizing and the observation decoupled state space. This creates a controller that can be realistically implemented using only local measurements, and whose performance is consistent with respect to changes in network configuration, loading and power transfer conditions. The control differs in this respect from linear constant-gain controllers such as power system stabilizers, whose characteristics can vary significantly with changes in operating conditions. The design is well-suited to a multimachine setting, in that it is not based on an infinite-bus approximation. Simulations were performed on a 38-bus reduced modelof the Northeast Power Coordinating Council system and benchmarked against simulations in which automatic voltage regulators with power system stabilizers were substituted in place of the nonlinear controls.< >