Search Results - "Raghuveer, M.R."

Onsite MOSA condition Assessment-a new approach by Karawita, C., Raghuveer, M.R.

“…A new method to assess the condition of metal-oxide surge arresters is presented. The fundamental component of the resistive current is used as an indicator…”
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Influence of representation model and voltage harmonics on metal oxide surge arrester diagnostics by Zhu, H., Raghuveer, M.R.

“…Test results have been presented to demonstrate the hysteretic character of the volt-ampere relation of a metal oxide surge arrester (MOSA). Using a…”
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A digital technique for the on-line measurement of dissipation factor and capacitance by Pei Wang, Raghuveer, M.R., McDermid, W., Bromley, J.C.

“…This paper reports a computer-aided system for on-line monitoring of dielectric dissipation factor tan /spl delta/, and capacitance of HV apparatus. The method…”
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Bispectrum estimation: A digital signal processing framework by Nikias, C.L., Raghuveer, M.R.

“…It is the purpose of this tutorial paper to place bispectrum estimation in a digital signal processing framework in order to aid engineers in grasping the…”
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On the existence of autoregressive models for third-order cumulant matching by Raghuveer, M.R., Dianat, S.A.

“…Necessary and sufficient conditions are provided for the third-moment sequence of a white-noise-driven finite-order AR (autoregressive) model to match given…”
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Partially conducting insulation materials for high voltage overhead applications by Qureshi, A.H., Raghuveer, M.R.

“…Insulation flashover under polluted environment has emerged as a serious problem in the past two decades. The deposition of air borne natural and man made…”
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Modelling of HVDC wall bushing flashover due to uneven wetting by Tang, L., Raghuveer, M.R.

“…An electric field based flashover model is proposed to predict the flashover voltage of an unevenly wetted HVDC wall bushing. Criteria for initiation and…”
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Multiresolution Analysis of Event-Related Potentials by Wavelet Decomposition by Samar, V.J., Swartz, K.P., Raghuveer, M.R.

“…Wavelet analysis is presented as a new tool for analyzing event-related potentials (ERPs). The wavelet transform expands ERPs into a time-scale representation,…”
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Prebreakdown phenomenon in SF6-N2-mixtures at various pressures by Malik, N.H., Qureshi, A.H., Theophilus, G.D., Raghuveer, M.R.

“…Investigations were carried out to establish the dielectric behaviour of SF 6 , N 2 and their mixtures. Prebreakdown currents were determined using plane/…”
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Investigation of ionized fields due to bundled unipolar DC transmission lines in the presence of wind by Xin Li, Ciric, I.R., Raghuveer, M.R.

“…The ionized fields of bundled unipolar DC power transmission lines are analysed by using an upwind node-centered finite volume method (FVM) based algorithm…”
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Digital image halftoning by noise thresholding by Makur, A., Raghuveer, M.R.

“…Approaches for digital halftoning of images using dithering threshold the input image with additive dithering noise. The paper presents a technique which…”
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Leakage current based assessment of degradation of MOSA using an alternative technique by Karawita, C., Raghuveer, M.R.

“…In order to evaluate the condition of an arrester on-site, the total arrester current is measured from which the resistive component has to be obtained and…”
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Time-domain approaches to quadratic phase coupling estimation by Raghuveer, M.R.

“…Bicoherence is a quantity used to estimate the contribution of second-order nonlinearity to the power in bifrequencies. The conventional approach to the…”
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Third-order statistics: issue of PDF symmetry by Raghuveer, M.R.

“…The notion that the third-order cumulant sequences of stationary random processes with symmetric PDFs are identically zero is examined. It is shown that it has…”
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Fast algorithms for bispectral reconstruction of two-dimensional signals by Dianat, S.A., Raghuveer, M.R.

“…Algorithms are developed to reconstruct the phase and magnitude of the Fourier transform of a two-dimensional, discrete, deterministic signal from samples of…”
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Polyspectral factorization: necessary and sufficient condition for finite extent cumulant sequences by Dianat, S.A., Raghuveer, M.R.

“…The authors provide necessary and sufficient conditions for bispectral and trispectral factorization for processes with finite-extent cumulant sequences. These…”
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Influence of harmonics in system voltage on metal oxide surge arrester diagnostics by Zhu, H., Raghuveer, M.R.

“…As a metal oxide surge arrester (MOSA) ages, its resistive leakage current increases with accompanying increase in the third harmonic component which is…”
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Numerical evaluation of the efficacy of booster sheds and RTV coating in improving the performance of HVDC wall bushings by Tang, L., Raghuveer, M.R.

“…In this paper, the critical flashover voltages of a 600 kV HVDC wall bushing with booster sheds and RTV coating are estimated by using a model recently…”
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Design of biorthogonal MRA generating wavelets matched to specified signal by Raghuveer, M.R., Chapa, J.O.

“…The problem of fitting a mother wavelet to a signal such that this wavelet along with a dual generate a biorthogonal wavelet decomposition is addressed. It is…”
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Numerical prediction of HVDC wall bushing flashover caused by uneven wetting by Tang, L., Raghuveer, M.R.

“…In this paper, a numerical model is developed to determine the critical flashover voltage of an unevenly wetted HVDC wall bushing, The electric field of a 600…”
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