2019/11/18 by Joakim Bjørk, Karl Henrik Johansson, Björk, Joakim +1
Engineering · #FOS: Electrical engineering #Frequency Control in Power Systems #Microgrid Control and Optimization #Power System Optimization and Stability #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1911.07501
openalex publication_date 2019/11/18 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
In this work, fundamental control limitations for rotor angle stability are\nconsidered. Limitations are identified by characterizing open-loop transfer\nfunction zeros for input-output combinations of certain power system\nconfigurations. Of particular interest are non-minimum phase (NMP) zeros that\nlimit the achievable performance of the closed-loop system. By studying a\nsingle-machine infinite bus power system model, analytic conditions for the\npresence of NMP zeros are derived. They are shown to be closely linked to the\ndestabilizing effect of automatic voltage regulators (AVRs). Depending on the\ncontrol loop, it is found that NMP zeros may persist in the system even if the\nclosed-loop system is stabilized through feedback control. A simulation study\nshows that NMP zeros introduced by AVR limit the achievable performance and\nstabilization using feedback control.\n