Abstract
The paper studies the robust control for multi-machine power systems under parametric uncertainties, perturbed mechanical input power and unknown variable communication time-delay. Only relative speed of each electrical generator is available for measurement. The theoretical investigations show that the proposed algorithm synchronizes the multi-machine power system with the required accuracy in the normal mode and under symmetrical 3-phase short circuit faults which occur on ransmission lines. Numerical investigations illustrate the efficiency of the proposed scheme for the three machines and the New England Power system benchmark.
Highlights
There is a growing interest in control of multi-machine power systems especially in the context of Smart Grid [Butler, 2009; Farhangi, 2010; Liserre, Sauter, and Hung, 2010]
Since most components of power systems are electric generators, design of a simple and reliable controller for generators is important for quality control
In the present paper we study the control system design for multi-machine power systems under parametric uncertainties, partially measured state vector of each generator, perturbed mechanical input power and unknown variable communication time-delay
Summary
There is a growing interest in control of multi-machine power systems especially in the context of Smart Grid [Butler, 2009; Farhangi, 2010; Liserre, Sauter, and Hung, 2010]. Implementation of most existing algorithms [Qu et al, 1992; Wang, Hill, and Guo, 1998; Guo, Hill, and Wang, 2000; Anderson and Fouad, 1977; Bergan, 1996; Pogromsky, Fradkov, and Hill, 1996; Ortega et al, 2005; Mahmud, Pota, and Hossian, 2012; Leon, Mauricio, and Solsona, 2012; Benahdouga, Boukhetala, and Boudjema, 2012; Wenhua, Renjie, and Zhonghong, 1993; Tsykunov, 2007; Furtat and Fradkov, 2015; Furtat, Chugina, and Fradkov, 2015] requires measurement of the state vector for each generator and knowledge of the power system parameters. Appendix gives the proof of the auxiliary loop algorithm for control of power systems
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