Analysis & Review: Secondary Arc Extinction Auto Reclosing for 765 KV EHV Transmission Line

Provided by: The International Journal of Research in Engineering Technology and Management (IJRETM)
Topic: Hardware
Format: PDF
In this paper, the authors suggest a new adaptive single-pole auto-reclosing technique based on tracking a single harmonic distortion index that represents the behavior of the low frequency components of the faulted phase voltage or sound phase current waveforms and a decision-making index that is defined based on proper-ties of the tracked HDI. The advantage of this technique that the threshold values, set for indices, can be chosen all most independent of pre-fault loading conditions and line parameters. The heart of this relay is a method trained to discriminate healthy system, permanent fault, transient fault and extinguishing of the secondary arc.

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