Line Protection Scheme for MMC-based Multi-terminal DC Distribution Networks
ID:314 View Protection:ATTENDEE Updated Time:2020-11-11 12:10:28 Hits:134 Poster Presentation

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Abstract
For Flexible Medium-voltage DC distribution grid, this paper proposes a DC line protection method. Frist, characteristic differences of transient current variation at both ends of the line are analyzed, afterwards a line protection is proposed based on the abrupt change of transient current. Through comparing the polarity of transient current, the method can discriminate the internal fault from the external fault. A MMC-based multi-terminal DC distribution networks is constructed, and extensive simulations are conducted to validate the effectiveness of the proposed protection scheme. Simulation results show that the proposed protection method can detect the fault section rapidly and accurately.
Keywords
Multi-terminal DC distribution networks,MMC,Wavelet transform,Fault identification,Line protection
Speaker
Zou Guibin
Shandong University

Submission Author
Wei Xiuyan Shandong University
Zou Guibin Shandong University
Yu Linhui Shandong University
Shi Yunfang State Grid Hebei Electric Power Co.,Ltd
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Important Date
  • Conference Date

    Oct 21

    2019

    to

    Oct 24

    2019

  • Oct 13 2019

    Abstract Notification of Acceptance

  • Oct 13 2019

    Draft paper submission deadline

  • Oct 14 2019

    Draft Paper Acceptance Notification

  • Oct 29 2019

    Final Paper Deadline

Organized By
Xi'an Jiaotong University
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