Cover
Vol. 19 No. 1 (2023)

Published: June 30, 2023

Pages: 29-37

Original Article

Using a Reduced Order Robust Control Approach to Damp Subsynchronous Resonance in Power Systems

Basim T. Kadhem 1
1Electrical Engineering Department, University of Basrah, Basrah, Iraq
History
  • Received: August 20, 2022
  • Revised: September 27, 2022
  • Accepted: September 27, 2022
  • Available Online: December 1, 2022
DOI

https://doi.org/10.37917/ijeee.19.1.4

Abstract

This work focuses on the use of the Linear Quadratic Gaussian (LQG) technique to construct a reliable Static VAr Compensator (SVC), Thyristor Controlled Series Compensator (TCSC), and Excitation System controller for damping Subsynchronous Resonance ( SSR ) in a power system. There is only one quantifiable feedback signal used by the controller (generator speed deviation). It is also possible to purchase this controller in a reduced-order form. The findings of the robust control are contrasted with those of the "idealistic" full state optimal control. The LQG damping controller's regulator robustness is then strengthened by the application of Loop Transfer Recovery (LTR). Nonlinear power system simulation is used to confirm the resilience of the planned controller and demonstrates how well the regulator dampens power system oscillations. The approach dampens all torsional oscillatory modes quickly while maintaining appropriate control actions, according to simulation results.

Keywords

References

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