Fault-tolerant wide-range stabilisation of a power system Online publication date: Tue, 08-Jul-2008
by Hisham M. Soliman, Abel-Latif Elshafei, Khaled A. El-Metwally, E.M.K. Makkawy
International Journal of Modelling, Identification and Control (IJMIC), Vol. 3, No. 2, 2008
Abstract: This paper considers the fault-tolerant stabilisation of a power system over a wide range of operating conditions via excitation and governor controllers. A simple technique is presented to maintain stability when both controllers act together and when either one of the two controllers fails. The dynamics of a power system operating at various loads is treated as an interval (uncertain) plant. The problem of designing power system controllers with a general structure, which stabilise the interval plant, is converted to a simple stabilisation problem for only four Kharitanov polynomials (as compared to the 16 plant theorem with first order controllers). A single machine infinite bus system is considered to demonstrate the suggested technique. Stability tests show the robustness of the proposed controller.
Online publication date: Tue, 08-Jul-2008
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