Indirect symmetrical PST protection based on phase angle shift and optimal radial basis function neural network

Bhasker, Shailendra Kumar; Tripathy, Manoj; Kumar, Vishal

doi:10.1109/npsc.2014.7103826

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Wavelet Transform Based Analysis1

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2015

2023

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Cited by 4 publications

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“…Magnetizing inrush current increases very slowly near switching point but after that shows rapid slope variation with time. Whereas internal fault differential current slope shows a decreasing trend with time and is sinusoidal [12]. The discrimination is based on the fact that rapid slope variation in case of internal faults occurs before than in case of inrush as shown in fig.…”

Section: Wavelet Transform Based Analysismentioning

confidence: 99%

Differential protection of indirect symmetrical phase shift transformer using wavelet transform

Bhasker

Bera

Kumar

et al. 2015

2015 Annual IEEE India Conference (INDICON)

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This paper illustrates a differential protection technique for indirect symmetrical phase shifting transformer (ISPST) using wavelet transform (WT). Discrimination between internal fault and magnetizing inrush is developed based on time duration between time of disturbance and the first maximum peak, called Td in D4 frequency component of WT. The merit of the proposed algorithm is demonstrated for different internal fault and inrush conditions data generated by simulation using PSCAD/EMTDC and RSCAD/RTDS. It distinguishes internal fault with in quarter cycle.

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Section: Wavelet Transform Based Analysismentioning

confidence: 99%