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Comprehensive Power Flow Analyses and Novel Feedforward Coordination Control Strategy for MMC-Based UPFC

Author

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  • Jinlian Liu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Zheng Xu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Liang Xiao

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract

This paper aims to discover the general steady-state operation characteristics, as well as improving the dynamic performance, of the modular multilevel converter (MMC)-based unified power flow controller (UPFC). To achieve this, first, we established a detailed power flow model for MMC-based UPFC containing each critical part and made qualitative and graphical analyses combining 2-dimensional operation planes and 3-dimensional spatial curve surfaces comprehensively to derive general power flow principles and offer necessary references for regulating UPFC. Furthermore, to achieve better performance, we designed a feedforward control strategy for the shunt and series converters of UPFC, both comprising two feedforward control blocks with the introduction of necessary compensating branches, and analyzed the performance in complex and time domain, respectively. The proposed power flow principles and control strategies were validated by a (power systems computer aided design) PSCAD model of 220 kV double-end system; the results reveal the MMC-based UPFC can realize the power flow principles and improve the control speed, stability, and precision of the power flow regulations under various conditions.

Suggested Citation

  • Jinlian Liu & Zheng Xu & Liang Xiao, 2019. "Comprehensive Power Flow Analyses and Novel Feedforward Coordination Control Strategy for MMC-Based UPFC," Energies, MDPI, vol. 12(5), pages 1-31, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:824-:d:210286
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    References listed on IDEAS

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    1. Joaquim Monteiro & Sónia Pinto & Aranzazu Delgado Martin & José Fernando Silva, 2017. "A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters," Energies, MDPI, vol. 10(6), pages 1-13, June.
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    Cited by:

    1. Mauricio Muñoz-Ramírez & Hugo Valderrama-Blavi & Marco Rivera & Carlos Restrepo, 2019. "An Approach to Natural Sampling Using a Digital Sampling Technique for SPWM Multilevel Inverter Modulation," Energies, MDPI, vol. 12(15), pages 1-16, July.
    2. Panos Kotsampopoulos & Pavlos Georgilakis & Dimitris T. Lagos & Vasilis Kleftakis & Nikos Hatziargyriou, 2019. "FACTS Providing Grid Services: Applications and Testing," Energies, MDPI, vol. 12(13), pages 1-23, July.
    3. Matias Diaz & Roberto Cárdenas Dobson & Efrain Ibaceta & Andrés Mora & Matias Urrutia & Mauricio Espinoza & Felix Rojas & Patrick Wheeler, 2020. "An Overview of Applications of the Modular Multilevel Matrix Converter," Energies, MDPI, vol. 13(21), pages 1-37, October.
    4. Alberto Duran & Efrain Ibaceta & Matias Diaz & Felix Rojas & Roberto Cardenas & Hector Chavez, 2020. "Control of a Modular Multilevel Matrix Converter for Unified Power Flow Controller Applications," Energies, MDPI, vol. 13(4), pages 1-18, February.

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