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Design of Coordinated Control of PSS and TCSC using LQR Optimal Controller


Affiliations
1 Department of Electrical Engineering, IARE, Dundigal, Hyderabad – 500043, Telangana, India
2 Department of Electrical and Electronics Engineering, Annamalai University, Annamalainagar – 608002, Tamil Nadu, India
3 Department of Electrical and Electronics Engineering, Marri Laxman Reddy Institute of Technology and Management Dundigal, Hyderabad – 500 043, Telangana, India
     

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An Optimal State Feedback Controller (OSFC) based on linear Quadratic Regulator (LQR) concept, is applied for simultaneous coordinated designing of the Power System Stabilizer (PSS) and Thyristor Controlled Series Capacitor (TCSC) as a damping controller in the Single Machine Infinite Bus (SMIB) power system. The performance of the proposed controllers is applied for nominal loading conditions. The eigen value analysis demonstrates the high performance of the proposed controllers and their ability to provide efficient damping of Low Frequency Oscillations (LFO’s). The performance of the proposed controllers with LQR has an excellent capability in damping LFO’s and enhance the dynamic stability of the system.

Keywords

Oscillation Damping, TCSC and PSS, Coordinated – Control, Optimal State Feedback Control.
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  • Design of Coordinated Control of PSS and TCSC using LQR Optimal Controller

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Authors

Jaya Prakash Rao
Department of Electrical Engineering, IARE, Dundigal, Hyderabad – 500043, Telangana, India
N. D. Sridhar
Department of Electrical and Electronics Engineering, Annamalai University, Annamalainagar – 608002, Tamil Nadu, India
Ramalla Issac
Department of Electrical and Electronics Engineering, Marri Laxman Reddy Institute of Technology and Management Dundigal, Hyderabad – 500 043, Telangana, India

Abstract


An Optimal State Feedback Controller (OSFC) based on linear Quadratic Regulator (LQR) concept, is applied for simultaneous coordinated designing of the Power System Stabilizer (PSS) and Thyristor Controlled Series Capacitor (TCSC) as a damping controller in the Single Machine Infinite Bus (SMIB) power system. The performance of the proposed controllers is applied for nominal loading conditions. The eigen value analysis demonstrates the high performance of the proposed controllers and their ability to provide efficient damping of Low Frequency Oscillations (LFO’s). The performance of the proposed controllers with LQR has an excellent capability in damping LFO’s and enhance the dynamic stability of the system.

Keywords


Oscillation Damping, TCSC and PSS, Coordinated – Control, Optimal State Feedback Control.

References





DOI: https://doi.org/10.33686/pwj.v16i2.157661