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Adaptability Analysis of Fault Component Distance Protection on Transmission Lines Connected to Photovoltaic Power Stations

Author

Listed:
  • Yingyu Liang

    (School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Guanjun Xu

    (School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Wenting Zha

    (School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

  • Cong Wang

    (School of Mechanical Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China)

Abstract

Photovoltaic (PV) power stations tend to have a relatively weak infeed characteristic, unlike conventional synchronous generators. The limited overcurrent capability of power electronic devices and the controllability of grid-connected inverters mean that PV power stations will cause changes in the characteristics of faults on transmission lines. To analyze the adaptability of fault component distance protection on transmission lines connected to PV power stations, a unified phasor expression for the fault current of a PV power station side under various control strategies was deduced in this paper. This expression is then used to derive the equivalent impedance on the PV power station side and the additional impedance. The equivalent impedance and additional impedance are affected greatly by the active and reactive power commands, control targets, and fault conditions. These aspects of a PV power station may cause malfunctions, which can thereby reduce the reliability of fault component distance protection on transmission lines connected to PV power stations. A simulation model of a PV power station was established in PSCAD/EMTDC and the correctness of theoretical analysis was verified by the simulation results.

Suggested Citation

  • Yingyu Liang & Guanjun Xu & Wenting Zha & Cong Wang, 2019. "Adaptability Analysis of Fault Component Distance Protection on Transmission Lines Connected to Photovoltaic Power Stations," Energies, MDPI, vol. 12(8), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1578-:d:225951
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    References listed on IDEAS

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    1. Shimin Xue & Jingyue Yang & Yanxia Chen & Cunping Wang & Zhe Shi & Miao Cui & Botong Li, 2016. "The Applicability of Traditional Protection Methods to Lines Emanating from VSC-HVDC Interconnectors and a Novel Protection Principle," Energies, MDPI, vol. 9(6), pages 1-27, May.
    2. Jia, Ke & Li, Yanbin & Fang, Yu & Zheng, Liming & Bi, Tianshu & Yang, Qixun, 2018. "Transient current similarity based protection for wind farm transmission lines," Applied Energy, Elsevier, vol. 225(C), pages 42-51.
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    Cited by:

    1. Yasar Beyazit Yoldas & Recep Yumurtacı, 2023. "Improvement of Distance Protection with SVM on PV-Fed Transmission Lines in Infeed Conditions," Energies, MDPI, vol. 16(6), pages 1-18, March.

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