Browsing by Author "Mahmoud, MS"

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    Fault location in distribution networks using fuzzy clustering techniques
    (C R L PUBLISHING LTD, 2001) Sabry, MM; Mahmoud, MS
    This paper examines the problem of locating faults that may occur anywhere in electrical distribution networks and develops a solution using fuzzy c-mean clustering technique. In addition, it introduces methods for normalizing available data and selecting the optimum number of clusters for data classification. The developed technique is applied to an existing 13.8 kilovolt distribution network, which Serves an oil production field spread over an area of approximately sixty kilometers square. Simulation results have shown the feasibility and the effectiveness of the suggested fault location method.
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    Robust H-infinity filtering for a class of linear parameter-varying systems
    (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2001) Mahmoud, MS; Boujarwah, AS
    In this paper, we investigate the problem of H-infinity filtering for a class of linear parameter-varying (LPV) systems in which the state-space matrices depend affinely on time-varying parameters. We employ the notion of affine quadratic stability using parameter-dependent Lyapunov functionals. We develop a linear parameter-dependent filter such that the estimation error is affinely quadratically stable with a prescribed performance measure. It is established that the solvability conditions can be expressed by linear matrix inequalities which are then evaluated at the extreme points of the admissible parameter set. Simulation results of a typical example are presented.