A Novel Approach For Spectral Analysis Of Monitored Power Systems

This paper presents a novel approach that combines the adaptive and non-adaptive notch filters, multilayer perceptron neural network, and warped discrete Fourier transform (WDFT) to estimate amplitudes, frequencies and phases of the fundamental and harmonic components in power systems. Simulation results show that only 1.25 cycles of the fundamental component are enough to provide small frequency, phase and amplitude error estimations. ©2004 IEEE.255259Arrillaga, J., Bollen, M.H.J., Watson, N.R., Power quality following deregulation (2000) Proceedings of the IEEE, 88 (2), pp. 246-261. , FebMelhorn, C., McGranaghan, M.F., Interpretation and analysis of power quality measurements (1995) IEEE Trans. on Industry Applications, 31 (6), pp. 1363-1370. , Nov./DecBollen, M.H.J., (2000) Power Quality Problems: Voltage Sags and Interruptions, , IEEE Press, NJ(1995) IEEE Recommended Practice for Monitoring Electric Power Quality, pp. 1159-1995. , IEEE StandardKhan, A.K., Monitoring power for the future (2001) Power Engineering Journal, 15 (2), pp. 81-85. , AprRibeiro, M.V., Duque, C.A., Romano, J.M.T., An improved method for signal processing and compression in power quality evaluation (2004) IEEE Trans. on Power Delivery, 19 (2), pp. 464-471. , AprWon, D.-J., Chung, I.-Y., Kim, J.-M., Moon, S.-I., Seo, J.-C., Choe, J.-W., Development of power quality monitoring system with central processing scheme (2002) Proc. IEEE Power Engineering Society Summer Meeting, pp. 915-919. , JulGhartemani, M.K., Iravani, M.R., A signal processing module for power system applications (2003) IEEE Trans. on Power Delivery, 18 (4), pp. 1118-1126. , OctRoutray, A., Pradhan, A.K., Rao, K.P., A novel Kalman filter for frequency estimation of distorted signals in power systems (2002) IEEE Trans. on Instr. and Measurement, 51 (3), pp. 469-479. , JunGharieb, R.R., Higher order statistics based IIR notch filtering scheme for enhancing sinusoids in coloured noise (2000) IEE Proc.-vis. Image Signal Processing, 147 (2), pp. 115-121. , AprFranz, S., Mitra, S.K., Doblinger, G., Frequency estimation using warped discrete fourier transform (2003) Signal Processing, 83, pp. 1661-1671Mitra, S.K., (2001) Digital Signal Processing: A Computer-based Approach, 2nd Edition, , McGraw-HillMarkur, A., Mitra, S.K., Warped discrete Fourier transform: Theory and applications (2001) IEEE Trans. Circuits and Systems-1: Fundamental Theory and Applications, 48 (9), pp. 1086-1093. , SeptMitra, S.K., Bagchi, S., (1999) The Nonuniform Discrete Fourier Transform and Its Applications in Signal Processing, , Kluwer Academic PublishersMoore, P.J., Português, I.E., The influence of personal computer processing mode on line current harmonics (2003) IEEE Trans. on Power Delivery, 18 (4), pp. 1363-1587. , OctRibeiro, M.V., Barbedo, J.G.A., Romano, J.M.T., Lopes, A., Fourier-lapped-multilayer perceptron (FLMLP) method for speech quality assessment (2003) EURASIP Journal on Applied Signal Processing, Special Issue on Anthropomorphic Processing of Audio and Speech, , submitte