Polarity of current area based active injection protection scheme for hybrid MMC-HVDC grids

Keao Chen,Qiteng Hong,Meng Li,Jinghan He,Yong Tang,Campbell D. Booth

International Journal of Electrical Power & Energy Systems（2023）

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摘要

•Reveal the TW reflection principle under different MMC control strategies.•Realize the line protection with the integration of MMC’s high controllability.•Propose to identify the fault by only measuring the changing terminal current.•Decrease the dependency on the CLR and improve the protection robustness.

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关键词

Hybrid MMC,TW analysis,Measured terminal current,Active injection protection,Polarity of current area

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