A study on LQG/LTR control for damping inter-area oscillations in power systems

Zolotas, Argyrios C, Chaudhuri, Balarko, Jaimoukha, Imad M and Korba, Petr (2007) A study on LQG/LTR control for damping inter-area oscillations in power systems. IEEE Transactions on Control Systems Technology, 15 (1). 151 -160. ISSN 1063-6536

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Abstract

This brief presents results on a robust linear quadratic Gaussian (LQG) damping control scheme for improving the inter-area mode oscillations of power systems. A technique is also proposed to guarantee minimum-phase/well-damped transmission zeros by appropriately "squaring" the design plant, for the purposes of efficient robust recovery. A 7th-order multiple-input single-output (MISO) centralized controller is designed for a 16-machine, 5-area power system (138th order) reinforced with a thyristor-controlled series capacitor (TCSC) to improve the damping of the critical inter-area modes by employing appropriate global signal measurements. Loop transfer recovery (LTR) is then applied to reinforce controller robustness in the case of faults and unknown disturbances. The performance of the designed system is assessed in the frequency domain and via appropriate time-domain simulations based upon the nonlinear model under a variety of scenaria

Item Type: Article
Keywords: damping interarea oscillations;flexible AC transmission systems;loop transfer recovery;multiple-input single-output centralized controller;robust linear quadratic Gaussian damping control;thyristor-controlled series capacitor;control system synthesis;damping;flexible AC transmission systems;linear quadratic Gaussian control;power transmission control;robust control;thyristors;
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: T Technology
T Technology > TA Engineering (General). Civil engineering (General) > TA0174 Engineering design
T Technology > TJ Mechanical engineering and machinery > TJ0212 Control engineering systems. Automatic machinery (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001 Distribution or transmission of electric power
Depositing User: Argyrios Zolotas
Date Deposited: 21 Nov 2012 06:44
Last Modified: 21 Nov 2012 06:44
URI: http://srodev.sussex.ac.uk/id/eprint/42771
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