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The retrieval of synchrophasors using chirps

Tan, Gan, Robson, Stephen ORCID: and Haddad, Abderrahmane ORCID: 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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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: Engineering
Publisher: IEEE
ISBN: 978-1-5386-2910-9
Last Modified: 25 May 2023 19:06

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