Mixed-sensitivity approach to H infin; control of power system oscillations employing multiple FACTS devices

Chaudhuri, Balarko, Pal, Bikash C, Zolotas, Argyrios C, Jaimoukha, Imad M and Green, Tim C (2003) Mixed-sensitivity approach to H infin; control of power system oscillations employing multiple FACTS devices. IEEE Transactions on Power Systems, 18 (3). 1149 - 1156. ISSN 0885-8950

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Abstract

This paper demonstrates the enhancement of inter-area mode damping by multiple flexible AC transmission systems (FACTS) devices. Power system damping control design is formulated as an output disturbance rejection problem. A decentralized H infin; damping control design based on the mixed-sensitivity formulation in the linear matrix inequality (LMI) framework is carried out. A systematic procedure for selecting the weights for shaping the open loop plant for control design is suggested. A 16-machine, five-area study system reinforced with a controllable series capacitor (CSC), a static VAr compensator (SVC), and a controllable phase shifter (CPS) at different locations is considered. The controllers designed for these devices are found to effectively damp out inter-area oscillations. The damping performance of the controllers is examined in the frequency and time domains for various operating scenarios. The controllers are found to be robust in the face of varying power-flow patterns, nature of loads, tie-line strengths, and system nonlinearities, including device saturations

Item Type: Article
Keywords: 16-machine; control design; controllable phase shifter; controllable series capacitor; damping performance; device saturation; five-area study system; frequency domain; inter-area mode damping; inter-area oscillations; large interconnected power systems; linear matrix inequalities; linear matrix inequality; mixed-sensitivity approach; mixed-sensitivity formulation; multiple FACTS devices; multiple flexible AC transmission systems devices; open loop plant; output disturbance rejection; power system damping control; power system oscillations; static VAr compensator; system nonlinearities; tie-line strengths; time domain; varying power-flow patterns;decentralised H infin; control; control system synthesis; damping; decentralised control; flexible AC transmission systems; frequency-domain analysis; linear matrix inequalities; load flow; oscillations; power system control; power system interconnection; power system stability; static VAr compensators; time-domain analysis;H infin; control;
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 06:47
Last Modified: 21 Nov 2012 06:47
URI: http://srodev.sussex.ac.uk/id/eprint/42770
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