Disfani, Vahid R.
Karrar, Abdelrahman A.; Ofoli, Abdul R.; Ahmed, Raga
College of Engineering and Computer Science
University of Tennessee at Chattanooga
Place of Publication
The remarkable growth of power electronics-interfaced renewable generations in the electric power grid has the potential to pronounce the effect of frequency disturbances such as inter-area oscillations. These low-frequency disturbances reduce transmission lines capacity, and at worst even damage the power grid infrastructures. In this paper, we propose a novel control algorithm to eliminate inter-area oscillations modes based on local measurements of frequency and the system's global average frequency. The performance of the proposed solution is investigated on different multi-machine test systems with classic and detailed electromechanical dynamic models through modal analysis and time-domain simulations. The modal analysis results indicate that all the inter-area modes are damped for all test cases. Time-domain simulations also demonstrate that the proposed control not only takes the system to near-zero inter-area oscillations but also improves other power system stability measures such as transient stability and frequency nadir.
M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.
Automatic frequency control; Eigenvalues; Electric power system stability; Mathematical models; Modal analysis
xi, 68 leaves
Macedo, Pablo, "Improving inter-area oscillations damping of power systems through cooperative active power control of distributed energy resources" (2021). Masters Theses and Doctoral Dissertations.