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In this paper, a novel distributed controller for multimachine power systemsis proposed to guarantee grid frequency restoration and accurate real andreactive power sharing among the generator units, while maintaining thegenerator inputs (mechanical torque and field excitation voltage) within givenbounds. The boundedness of the controller outputs (generator inputs) isrigorously proven using vector field theory. It is additionally shown that evenif one generator input reaches its upper/lower limit, the remaining units canstill accomplish the desired control tasks without modifying the controllerstructure or dynamics; hence introducing enhanced system resilience using theproposed approach. This has been accomplished in a unified control structurewhile using neighbour-to-neighbour communication, thus maintaining thedistributed nature of the controller. An example of a 10-bus, 4-machine powersystem is simulated to verify the proposed controller performance under suddenchanges of the load demand.

Resilient Distributed Integral Control for Multimachine Power Systems with Inherent Input Constraint Satisfaction