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Synchro-Phasors in Power System

Author(s): V.Vanitha, R.Badrinath

Journal: International Journal of Engineering Research
ISSN 2319-6890

Volume: 2;
Issue: 4;
Start page: 269;
Date: 2013;
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Keywords: Phasor Measurement Unit | Synchrophasor | Fourier Transform | Zigbee

AbstractThe Phasor Measurement Unit (PMU) is considered to be one of the most important measuring devices in the future of power system. The difference comes from its unique ability to provide synchronized phasor measurements of voltages and currents from widely dispersed locations in an electric power grid called synchrophasor technology .In SCADA system, the measured quantities remain constant during the data gathering process. Hence the dynamic characteristics of the power system cannot be estimated. Synchrophasor technology is used to overcome this drawback. The Global Positioning Satellite(GPS) is used for synchronisation between the PMUs at different places, which receive the signal from GPS simultaneously and start measuring voltage and current. Magnitude of voltage and current along with their angles are calculated from the coefficients of Fourier Transform. The objective of this paper is to implement the synchrophasor technology using PIC18F4550 by using Fourier Transform to measure the magnitude and phase angle of any quantity such as voltage or current or both and storing in database. Apart from this, the technology is implemented for different applications and results are verified.
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