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Synchrophasor communication

Synchrophasor-Kommunikation

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Abstract

Synchronized phasor measurements provide the basis for fine-grained wide area power quality monitoring in electric grids. Time-synchronized phasor measurement units (PMUs) are deployed at different locations in the grid and report 10–60 measurements/second to energy management systems or other applications. For control applications it is crucial to receive measurement data as soon as possible after a state change in order to trigger corrective actions in time to prevent incidents in the grid.

In this paper we analyze characteristics of synchrophasor M2M communication for different network technologies, including VDSL, HSPA and LTE networks. We briefly review synchrophasor communication approaches and real-time demands. We then emulate PMU traffic and perform measurements on different networks. We show how the underlying technology influences one-way delay patterns for synchrophasor communication, which has direct implication on the achievable real-time properties.

Zusammenfassung

Synchronisierte Phasor Messungen stellen die Basis für Wide Area Monitoring Systeme in intelligenten Stromnetzen (Smart Grids) dar. Zeitsynchronisierte Phasor Measurement Units (PMUs) an verschiedenen Beobachtungspunkten senden 10–60 Messungen/Sekunde an Energiemanagementsysteme und andere Anwendungen. PMU Messergebnisse müssen den Anwendungen möglichst schnell zur Verfügung stehen. Nur dann können Anwendungen korrigierend in Prozesse eingreifen und Störungen im Stromnetz verhindern.

In diesen Beitrag analysieren wir Synchrophasor Machine-to-Machine (M2M) Kommunikationsmuster für verschiedene Technologien, einschließlich VDSL, HSPA und LTE. Wir betrachten zunächst die Echtzeitanforderungen und die verschiedenen Ansätze für PMU Kommunikation. Anschließend emulieren wir PMU Datenströme und führen damit Messungen in verschiedenen Kommunikationsnetzen durch. In unseren Ergebnissen zeigen wir, wie die zugrunde liegenden Technologien die Verzögerungszeiten (One-way Delay), und damit die Erfüllung von Echtzeitanforderungen, für die PMU Kommunikation beeinflussen.

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Acknowledgements

The authors would like to thank Waltraud Müllner and Werner Wiedermann from A1 Telekom Austria AG, Philipp Svoboda and Markus Laner from the Institute of Telecommunications for providing LTE modems and SIM cards, which have facilitated measurements in mobile cellular networks.

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Authors and Affiliations

  1. Institute of Telecommunications, Vienna University of Technology, Gusshausstraße 25, 1040, Wien, Österreich

    Tanja Zseby, Joachim Fabini & Dipika Rani

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  1. Tanja Zseby
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  2. Joachim Fabini
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  3. Dipika Rani
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Correspondence to Tanja Zseby.

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Zseby, T., Fabini, J. & Rani, D. Synchrophasor communication. Elektrotech. Inftech. 131, 8–13 (2014). https://doi.org/10.1007/s00502-013-0193-6

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  • DOI: https://doi.org/10.1007/s00502-013-0193-6

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