Fig. 15 | Scientific Reports

Fig. 15

From: Digital protection scheme based on Durbin Watson and Pearson similarity indices for current signals practically applied to power transformers

Fig. 15

Algorithm results for experiment 7. (a) Three-phase currents (ia(k), ib(k), and ic(k)), (b) Three cross-correlation coefficients (riab, ribc, and rica), (c) Durbin-Watson factors (DWia, DWib, and DWic), (d) Tripping signal, (e) Three auto-correlation coefficients (ria, rib, and ric), and (f) Durbin-Watson factors (dDWia1, dDWib1, and dDWic1).

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