HE Guixian, XING Hongyan, XU Wei, et al. Application of Complete Ensemble Empirical Mode Decomposition in MOA Monitoring[J]. High voltageapparatus, 2018, 54(12): 225-231.
HE Guixian, XING Hongyan, XU Wei, et al. Application of Complete Ensemble Empirical Mode Decomposition in MOA Monitoring[J]. High voltageapparatus, 2018, 54(12): 225-231. DOI: 10.13296/j.1001-1609.hva.2018.12.034.
Application of Complete Ensemble Empirical Mode Decomposition in MOA Monitoring
According to the detection of continuous current of metal oxide arrester(MOA)comprises lots of noises
a de-noise method is proposed based on Complete Ensemble Empirical Mode Decomposition(CEEMDAN).The detection signals with noise of MOA can be decomposed into a series of intrinsic mode functions(IMFs)
and then the IMFs are analyzed by auto correlation.In order to get useful components and noise components
the Savitzky-Golay filter is used to de-noise.After filtering
the remaining components are restricted into a new signal.A typical surge arrester has been simulated in MATLAB
and the result shows that by de-noising of the continuous current of MOA
the root mean square error can be reduced by one order of magnitude(normal 3.209 8×10-5
aging 0.002 5)
while the model before de-noising(normal 2.450 9×10-4
aging 0.017 3)
and the effectiveness of the proposed method is verified
the accuracy of MOA monitoring results are improved.