The retrieval of synchrophasors using chirps

Tan, Gan, Robson, Stephen ORCID: https://orcid.org/0000-0003-3156-1487 and Haddad, Abderrahmane ORCID: https://orcid.org/0000-0003-4153-6146 2018. The retrieval of synchrophasors using chirps. Presented at: 53rd International Universities Power Engineering Conference (UPEC), Glasgow, UK, 4-7 September 2018. 2018 53rd International Universities Power Engineering Conference (UPEC). IEEE, 10.1109/UPEC.2018.8541865

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Abstract

This paper describes a cost-effective and robust method of transporting synchrophasor information (voltage, current and phase angle) from many positions on a distribution network to a central point. The method stops short of digitising the scaled outputs of voltage and current transducers, instead using these outputs to drive directly a Voltage Controlled Oscillator (VCO). The VCO generates an output frequency proportional to the input voltage. The generated waveform is a series of repeating chirps with a maximum frequency related to the peak value of the voltage or current being monitored. This waveform is immediately coupled to the power line, propagates through the network, and received at a central point. The received signal is filtered into the various sub-channels and Hilbert transformed to transform back to the original power frequency waveform. Extending the method to include numerous local measurement points and a parallel stream of signal processing channels at the receiver enables an inexpensive synchrophasor solution for distribution networks.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	IEEE
ISBN:	978-1-5386-2910-9
Last Modified:	25 May 2023 19:06
URI:	https://orca.cardiff.ac.uk/id/eprint/123406

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