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LQR and LQG based optimal switching techniques for PSS and UPFC in power systems

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Abstract

Selection of better optimized unified power flow controller (UPFC) control inputs along with simultaneous coordinated design of power system stabilizer (PSS) is a challenge in the present scenario of power systems. Hence, in this paper, four sets of experiments performed are presented. First set of experiments are without disturbance scenario where switching is done using linear quadratic regulators (LQR’s). Second set is for power systems with disturbances using linear quadratic gaussian (LQG). Switching control algorithms presented here are tested on the single machine infinite bus (SMIB) linearised Phillips Heffron model of power system using MATLAB/SIMULINK® platform.

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Acknowledgements

The authors appreciate Dr. P. K. Mahesh, Head of Electronics and Communication Department, Dr. L. Basavaraj, Principal, both from ATME College of Engineering, Mysore, and Dr. M. N. Shanmukhaswamy, Head of Electronics and Communication Department, Dr. Syed Shakeeb ur Rehman, Principal, both from Sri Jayachamarajendra College of Engineering, Mysore, for their moral support and encouragement during this research work.

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Authors and Affiliations

  1. E & C Department, ATME College of Engineering, VTU, Karnataka, India

    L. Yathisha

  2. E & C Department, Sri Jayachamarajendra College of Engineering (JSSSTU), Karnataka, India

    S. Patilkulkarni

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  1. L. Yathisha
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  2. S. Patilkulkarni
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Corresponding author

Correspondence to L. Yathisha.

Additional information

This work was supported by Sri Jayachamarajendra College of Engineering (JSSSTU), Mysuru, Karnataka, India.

L. YATHISHA received his M.Tech. degree in Industrial Electronics and Ph.D. degee in Control Systems from SJCE, Visvesvaraya Technological University (VTU), in 2017 and 2010, respectively. Since 2012 He has been working as Assistant Professor in the Department of Electronics and Communication Engineering, ATME College of Engineering (affiliated to VTU), Mysore, India. His areas of interests are power systems, control systems and hybrid control systems. E-mail: yathisha.171@gmail.com.

S. PATILKULKARNI received his Ph.D. degree from Old Dominion university, Norfolk, Virginia, U.S.A., in 2004. He is currently working as Professor in the Department of Electronics and Communication at Sri Jayachamarajendra College of Engineering (SJCE), JSS Science and Technology University, Mysore, India. His research interests include control systems, hybrid and stochastic systems, VLSI, signal and image processing. E-mail: sudarshan_ pk@sjce.ac.in.

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Yathisha, L., Patilkulkarni, S. LQR and LQG based optimal switching techniques for PSS and UPFC in power systems. Control Theory Technol. 16, 25–37 (2018). https://doi.org/10.1007/s11768-018-6174-x

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  • DOI: https://doi.org/10.1007/s11768-018-6174-x

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