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Modeling Stray Capacitances of High-Voltage Capacitive Dividers for Conventional Measurement Setups

Author

Listed:
  • Alessandro Mingotti

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

  • Federica Costa

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

  • Lorenzo Peretto

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

  • Roberto Tinarelli

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

  • Paolo Mazza

    (Ricerca sul Sistema Energetico–RSE S.p.A, Via R. Rubattino, 54-20134 Milan, Italy)

Abstract

Stray capacitances (SCs) are a serious issue in high-voltage (HV) applications. Their presence can alter the circuit or the operation of a device, resulting in wrong or even disastrous consequences. To this purpose, in this work, we describe the modeling of SCs in HV capacitive dividers. Such modeling does not rely on finite element analysis or complicated geometries; instead, it starts from an equivalent circuit of a conventional measurement setup described by the standard IEC 61869-11. Once the equivalent model including the SCs is found, closed expressions of the SCs are derived starting from the ratio error definition. Afterwards, they are validated in a simulation environment by implementing various circuit configurations. The results demonstrate the expressions applicability and effectiveness; hence, thanks to their simplicity, they can be implemented by system operators, researchers, and manufacturers avoiding the use of complicated methods and technologies.

Suggested Citation

  • Alessandro Mingotti & Federica Costa & Lorenzo Peretto & Roberto Tinarelli & Paolo Mazza, 2021. "Modeling Stray Capacitances of High-Voltage Capacitive Dividers for Conventional Measurement Setups," Energies, MDPI, vol. 14(5), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1262-:d:505664
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    References listed on IDEAS

    as
    1. Li Zhang & Xiyue LuoYang & Yanjie Le & Fan Yang & Chun Gan & Yinxian Zhang, 2018. "A Thermal Probability Density–Based Method to Detect the Internal Defects of Power Cable Joints," Energies, MDPI, vol. 11(7), pages 1-13, June.
    2. Jordi-Roger Riba & Francesca Capelli & Manuel Moreno-Eguilaz, 2019. "Analysis and Mitigation of Stray Capacitance Effects in Resistive High-Voltage Dividers," Energies, MDPI, vol. 12(12), pages 1-16, June.
    3. Jordi-Roger Riba & Francesca Capelli, 2018. "Analysis of Capacitance to Ground Formulas for Different High-Voltage Electrodes," Energies, MDPI, vol. 11(5), pages 1-19, April.
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