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Analytical Modeling Approach to Study Harmonic Mitigation in AC Grids with Active Impedance at Selective Frequencies

Author

Listed:
  • Gonzalo Abad

    (Electronics and Computing Department, Mondragon University, 20500 Mondragon, Spain)

  • Aitor Laka

    (Industry and Marine Drives Department, Ingeteam Power Technology S.A., 48170 Zamudio, Spain)

  • Gabriel Saavedra

    (Industry and Marine Drives Department, Ingeteam Power Technology S.A., 48170 Zamudio, Spain)

  • Jon Andoni Barrena

    (Electronics and Computing Department, Mondragon University, 20500 Mondragon, Spain)

Abstract

This paper presents an analytical model, oriented to study harmonic mitigation aspects in AC grids. As it is well known, the presence of non-desired harmonics in AC grids can be palliated in several manners. However, in this paper, a power electronic-based active impedance at selective frequencies (ACISEF) is used, due to its already proven flexibility and adaptability to the changing characteristics of AC grids. Hence, the proposed analytical model approach is specially conceived to globally consider both the model of the AC grid itself with its electric equivalent impedances, together with the power electronic-based ACISEF, including its control loops. In addition, the proposed analytical model presents practical and useful properties, as it is simple to understand and simple to use, it has low computational cost and simple adaptability to different scenarios of AC grids, and it provides an accurate enough representation of the reality. The benefits of using the proposed analytical model are shown in this paper through some examples of its usefulness, including an analysis of stability and the identification of sources of instability for a robust design, an analysis of effectiveness in harmonic mitigation, an analysis to assist in the choice of the most suitable active impedance under a given state of the AC grid, an analysis of the interaction between different compensators, and so on. To conclude, experimental validation of a 2.15 kA ACISEF in a real 33 kV AC grid is provided, in which real users (household and industry loads) and crucial elements such as wind parks and HVDC systems are near inter-connected.

Suggested Citation

  • Gonzalo Abad & Aitor Laka & Gabriel Saavedra & Jon Andoni Barrena, 2018. "Analytical Modeling Approach to Study Harmonic Mitigation in AC Grids with Active Impedance at Selective Frequencies," Energies, MDPI, vol. 11(6), pages 1-31, May.
  • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1337-:d:148854
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    References listed on IDEAS

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    1. Chang Yuan & Peilin Xie & Dan Yang & Xiangning Xiao, 2018. "Transient Stability Analysis of Islanded AC Microgrids with a Significant Share of Virtual Synchronous Generators," Energies, MDPI, vol. 11(1), pages 1-19, January.
    2. Adedotun J. Agbemuko & José Luis Domínguez-García & Eduardo Prieto-Araujo & Oriol Gomis-Bellmunt, 2018. "Impedance Modelling and Parametric Sensitivity of a VSC-HVDC System: New Insights on Resonances and Interactions," Energies, MDPI, vol. 11(4), pages 1-24, April.
    3. Henan Dong & Shun Yuan & Zijiao Han & Zhiyuan Cai & Guangdong Jia & Yangyang Ge, 2018. "A Comprehensive Strategy for Accurate Reactive Power Distribution, Stability Improvement, and Harmonic Suppression of Multi-Inverter-Based Micro-Grid," Energies, MDPI, vol. 11(4), pages 1-16, March.
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    Cited by:

    1. Carlos Ruiz & Gonzalo Abad & Markel Zubiaga & Danel Madariaga & Joseba Arza, 2018. "Frequency-Dependent Pi Model of a Three-Core Submarine Cable for Time and Frequency Domain Analysis," Energies, MDPI, vol. 11(10), pages 1-21, October.
    2. Markel Zubiaga & Alain Sanchez-Ruiz & Eneko Olea & Eneko Unamuno & Aitor Bilbao & Joseba Arza, 2020. "Power Capability Boundaries for an Inverter Providing Multiple Grid Support Services," Energies, MDPI, vol. 13(17), pages 1-14, August.
    3. Gonzalo Abad & Alain Sanchez-Ruiz & Juan José Valera-García & Aritz Milikua, 2020. "Analysis and Design Guidelines for Current Control Loops of Grid-Connected Converters Based on Mathematical Models," Energies, MDPI, vol. 13(21), pages 1-47, November.

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