Fault Identification of HVDC Transmission Lines and Lightning Strike Fault Identification

Lei Chen ； Hao Wu ； Dong Li ； Tianyu Li ； Haiyan Xu

《International Core Journal of Engineering》 6卷7期 (2020/07) Pp. 10-17

https://doi.org/10.6919/ICJE.202007_6(7).0002

摘要

This paper analyzes the main protection principles of HVDC transmission line protection at present, and summarizes the research contents of protection based on transient quantity and catastrophe quantity respectively. Among them, the protection of HVDC transmission lines based on transient quantity mainly introduces four methods of extracting transient information of each frequency band, current direction protection, impedance protection and traveling wave protection. The protection of HVDC transmission lines based on catastrophe quantity mainly introduces catastrophe quantity direction protection, catastrophe quantity polarity protection and impedance protection. On this basis, the characteristics of HVDC transmission line protection at this stage and the existing problems in actual operation are analyzed, the future research ideas are discussed, and the development direction is prospected.

關鍵字

Transmission line protection ； Transient quantity ； Catastrophe quantity

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