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Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault

Author

Listed:
  • Qing Huai

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Kaipei Liu

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Liang Qin

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Jian Le

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Kun Wang

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Shu Zhu

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Yuye Li

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Xiaobing Liao

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Hua Ding

    (State Grid Energy Conservation Service Co., Ltd., Beijing 100052, China)

Abstract

The integration of a modular multilevel converter-based high-voltage direct current (MMC-HVDC) transmission system in power networks has led to a high requirement for the rapidity of fault recognition. This study focused on the rapid fault diagnosis of an alternating current (AC) line fault in a back-to-back (BTB) MMC-HVDC system via fault detection and classification. Discrete wavelet transform and modulus maxima were applied to extract the fault features. Phase-mode transformation and normalization were adopted to widen the application range. Simulation and calculation results indicated that the proposed method can detect all fault types in an AC transmission line on the basis of single-side fault information within 1 ms under different values of transition resistance, fault inception angle, and fault distance. The BTB MMC-HVDC model was built using real-time laboratory (RT-LAB) based on the matrix laboratory (MATLAB) software platform, and the fault diagnosis algorithm was performed in MATLAB.

Suggested Citation

  • Qing Huai & Kaipei Liu & Liang Qin & Jian Le & Kun Wang & Shu Zhu & Yuye Li & Xiaobing Liao & Hua Ding, 2018. "Rapid Fault Diagnosis of a Back-to-Back MMC-HVDC Transmission System under AC Line Fault," Energies, MDPI, vol. 11(6), pages 1-30, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1534-:d:152153
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