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Multiterminal HVDC System with Power Quality Enhancement

Author

Listed:
  • Pedro Roncero-Sánchez

    (Institute of Energy Research and Industrial Applications, University of Castilla-La Mancha, Campus Universitario S/N, 13071 Ciudad Real, Spain)

  • Alfonso Parreño Torres

    (Institute of Industrial Development, Castilla-La Mancha Science and Technology Park, Paseo de la Innovación 1, 02006 Albacete, Spain)

  • Javier Vázquez

    (Institute of Energy Research and Industrial Applications, University of Castilla-La Mancha, Campus Universitario S/N, 13071 Ciudad Real, Spain)

  • Francisco Javier López-Alcolea

    (Institute of Energy Research and Industrial Applications, University of Castilla-La Mancha, Campus Universitario S/N, 13071 Ciudad Real, Spain)

  • Emilio J. Molina-Martínez

    (Institute of Energy Research and Industrial Applications, University of Castilla-La Mancha, Campus Universitario S/N, 13071 Ciudad Real, Spain)

  • Felix Garcia-Torres

    (Applications Unit, Centro Nacional del Hidrógeno, 13500 Puertollano, Spain)

Abstract

High-Voltage Direct Current (HVDC) systems are a feasible solution that allows the transmission of energy between several power networks. As a consequence of the use of HVDC systems, renewable energy sources can be integrated more easily into distribution grids and smart grids. Furthermore, HVDC systems can contribute to improving the power quality (PQ) of the grids to which they are connected. This paper presents a multiterminal HVDC system that not only controls the flows of active power between four different networks, but also compensates imbalances and harmonics in the grid currents to maintain balanced and sinusoidal voltages at the point of common coupling of the various grids. The compensation is carried out by the voltage-source converters (VSCs) connected to their respective AC grids. A control scheme based on the use of resonant regulators and proportional–integral (PI) controllers is responsible for of achieving the necessary power flow control with the amelioration of the PQ. A case study of a multiterminal HVDC system that comprises four terminals sharing a DC bus of 80 kV is simulated by means of PSCAD TM /EMTDC TM (Power System Computer-Aided Design; Electromagnetic Transients including Direct Current), where the AC grids associated with the terminals suffer from voltage imbalances and voltage harmonics owing to the connection of unbalanced loads and nonlinear loads. The obtained simulation results show the performance of the complete system in terms of active power flow, voltage regulation, and harmonic distortions of the grid current and the grid voltage.

Suggested Citation

  • Pedro Roncero-Sánchez & Alfonso Parreño Torres & Javier Vázquez & Francisco Javier López-Alcolea & Emilio J. Molina-Martínez & Felix Garcia-Torres, 2021. "Multiterminal HVDC System with Power Quality Enhancement," Energies, MDPI, vol. 14(5), pages 1-22, February.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:5:p:1306-:d:507064
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    References listed on IDEAS

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    1. Pedro Roncero-Sánchez & Alfonso Parreño Torres & Javier Vázquez, 2018. "Control Scheme of a Concentration Photovoltaic Plant with a Hybrid Energy Storage System Connected to the Grid," Energies, MDPI, vol. 11(2), pages 1-30, January.
    2. Weiming Liu & Tingting Zheng & Ziwen Liu & Zhihua Fan & Yilong Kang & Da Wang & Mingming Zhang & Shihong Miao, 2018. "Active and Reactive Power Compensation Control Strategy for VSC-HVDC Systems under Unbalanced Grid Conditions," Energies, MDPI, vol. 11(11), pages 1-19, November.
    3. Pedro Roncero-Sànchez & Enrique Acha, 2014. "Design of a Control Scheme for Distribution Static Synchronous Compensators with Power-Quality Improvement Capability," Energies, MDPI, vol. 7(4), pages 1-22, April.
    4. Neville R. Watson & Jeremy D. Watson, 2020. "An Overview of HVDC Technology," Energies, MDPI, vol. 13(17), pages 1-35, August.
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    Cited by:

    1. Tianwen Zheng & Laijun Chen & Yan Guo & Wei Wei & Bo Zhou & Xinwei Sun, 2021. "A VSG-Based Coordinated DC Voltage Control for VSC-HVDC to Participate in Frequency Regulation," Energies, MDPI, vol. 14(9), pages 1-13, May.
    2. Mohsin Ali Koondhar & Ghulam Sarwar Kaloi & Abdul Sattar Saand & Sadullah Chandio & Wonsuk Ko & Sisam Park & Hyeong-Jin Choi & Ragab Abdelaziz El-Sehiemy, 2023. "Critical Technical Issues with a Voltage-Source-Converter-Based High Voltage Direct Current Transmission System for the Onshore Integration of Offshore Wind Farms," Sustainability, MDPI, vol. 15(18), pages 1-21, September.

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