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SVC robust additional damping controller design for power system with considering time-delay of wide-area signals

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5 Author(s)
Fang Liu ; Graduate School of Environment and Energy Engineering, Waseda University, Tokyo, Japan ; Ryuichi Yokoyama ; Yicheng Zhou ; Yong Li
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This paper proposes a new static var compensator (SVC) robust additional damping controller (RADC) to improve the damping of power system inter-area oscillation with considering time delay of wide-area signals. Firstly, since the impact of time delay introduced by remote signal's transmission and processing in wide-area measurement systems (WAMS) has to be considered, the design of SVC additional damping controller is formulated as the time-delay output feedback control problem. Then based on the direct feedback linearization (DFL) theory, robust control theories and state observer, the parameters of controller are designed by employed the free-weighting matrices method and pole placement method. Finally, taking the four-machine two-area power system as an example, the simulation results demonstrate the damping controller not only inhibits inter-area low-frequency oscillation evidently, but also is robust to various operating conditions and time delay.

Published in:

Environment and Electrical Engineering (EEEIC), 2010 9th International Conference on

Date of Conference:

16-19 May 2010