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A method based on improved instantaneous symmetrical components and three-point algorithm for synchronized phasor measurement

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2 Author(s)

The real-time on-line estimation of phasor frequency, amplitude and phase Angle makes a high request on both the accuracy and real-time of the method. In the conventional phasor measuring method based on DFT (discrete Fourier transform), data acquisition cycle was longer, the accuracy was easy to be effected by the frequency fluctuation. On the other hand, while the systems are under unbalanced operation or unbalanced fault, positive and negative sequence components measurement is conducive to the dynamic analysis. This paper presents a new method based on improved instantaneous symmetrical components and three-point algorithm for synchronized phasor measurement, which is easy to be implemented, and has better real-time and higher measurement accuracy. The MATLAB simulation results verify the correctness of the proposed method.

Published in:

Critical Infrastructure (CRIS), 2010 5th International Conference on

Date of Conference:

20-22 Sept. 2010