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A Simple Calibration Procedure for an LPIT plus PMU System Under Off-Nominal Conditions

Author

Listed:
  • Alessandro Mingotti

    (Department of Electrical, Electronic and Information Engineering Alma Mater Studiorum, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Lorenzo Peretto

    (Department of Electrical, Electronic and Information Engineering Alma Mater Studiorum, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Roberto Tinarelli

    (Department of Electrical, Electronic and Information Engineering Alma Mater Studiorum, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Andrea Angioni

    (Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH University Mathieustrasse 10, 52074 Aachen, Germany)

  • Antonello Monti

    (Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH University Mathieustrasse 10, 52074 Aachen, Germany)

  • Ferdinanda Ponci

    (Institute for Automation of Complex Power Systems, E.ON Energy Research Center, RWTH University Mathieustrasse 10, 52074 Aachen, Germany)

Abstract

This work deals with two paramount devices when Smart Grids are concerned: phasor measurement units (PMUs) and low-power instrument transformers (LPITs). In particular, a simple calibration procedure to test the measurement chain PMU + LPIT has been developed. The procedure involves steady-state conditions of the grid and off-nominal input signals for testing current, voltage, frequency, and rate of change of frequency (ROCOF). In addition, the procedure includes a preliminary testing of the PMU without the LPIT to understand the influence of the latter. The procedure is then applied to a specific case study: a low-cost PMU developed by the authors and one of the most common LPITs adopted in Italian medium voltage networks. The obtained results are promising for two reasons. First, the low-cost PMU works correctly even in off-nominal conditions of the grid; second, the presented calibration procedure demonstrated to be effective and applicable to very common equipment, using a rather simple test setup.

Suggested Citation

  • Alessandro Mingotti & Lorenzo Peretto & Roberto Tinarelli & Andrea Angioni & Antonello Monti & Ferdinanda Ponci, 2019. "A Simple Calibration Procedure for an LPIT plus PMU System Under Off-Nominal Conditions," Energies, MDPI, vol. 12(24), pages 1-20, December.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:24:p:4645-:d:295209
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    Citations

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    Cited by:

    1. Michal Kaczmarek & Artur Szczęsny & Ernest Stano, 2022. "Operation of the Electronic Current Transformer for Transformation of Distorted Current Higher Harmonics," Energies, MDPI, vol. 15(12), pages 1-10, June.
    2. Michal Kaczmarek & Ernest Stano, 2023. "Review of Measuring Methods, Setups and Conditions for Evaluation of the Inductive Instrument Transformers Accuracy for Transformation of Distorted Waveforms," Energies, MDPI, vol. 16(11), pages 1-17, May.
    3. Alessandro Mingotti & Lorenzo Peretto & Roberto Tinarelli, 2021. "Low-Impact Current-Based Distributed Monitoring System for Medium Voltage Networks," Energies, MDPI, vol. 14(17), pages 1-17, August.
    4. Michal Kaczmarek & Piotr Kaczmarek & Ernest Stano, 2022. "Evaluation of the Current Shunt Influence on the Determined Wideband Accuracy of Inductive Current Transformers," Energies, MDPI, vol. 15(18), pages 1-12, September.

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