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Frequency Estimation in Power Systems for Wide Area Monitoring and Control

Kumar, V Seshadri Sravan and Kumar, G Manoj and Kumar, A Santosh and Thukaram, D (2017) Frequency Estimation in Power Systems for Wide Area Monitoring and Control. In: IEEE Annual India Conference (INDICON), DEC 16-18, 2016, Bangalore, INDIA.

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Precise tracking of frequency is essential for accurate phasor estimation at off nominal frequencies. In this paper, a simple approach for real time frequency estimation involving interpolation of DFT coefficients corresponding to fundamental and two adjacent bins is presented. In particular, quadratic interpolation method is adopted to estimate the frequency. The quadratic interpolation formulation widely adopted in signal processing framework may not be adequate for frequency estimation of power system signals. The modifications required to improve the accuracy are presented. Results on standard test signals and simulated waveforms of practical equivalent systems of Indian grid are presented to validate the proposed approach.

Item Type: Conference Proceedings
Series.: Annual IEEE India Conference
Publisher: IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Additional Information: IEEE Annual India Conference (INDICON), Bangalore, INDIA, DEC 16-18, 2016
Department/Centre: Division of Electrical Sciences > Electrical Engineering
Date Deposited: 10 Jun 2017 04:42
Last Modified: 10 Jun 2017 04:42
URI: http://eprints.iisc.ac.in/id/eprint/57211

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