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A new protection scheme for PV-wind based DC-ring microgrid by using modified multifractal detrended fluctuation analysis

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Protection and Control of Modern Power Systems 2022年第1期7卷 100-123页

作者： kanche anjaiah Pradipta Kishore Dash Mrutyunjaya Sahani Department of Electrical Engineering Siksha‘O’Anusandhan Deemed to be UniversityBhubaneswarOdishaIndia Multidisciplinary Research Cell Siksha‘O’Anusandhan Deemed to be UniversityBhubaneswarOdishaIndia Department of Electrical and Electronics Engineering Siksha‘O’Anusandhan Deemed to be UniversityBhubaneswarOdishaIndia

This paper presents fault detection,classification,and location for a PV-Wind-based DC ring microgrid in the MATLAB/SIMULINK ***,DC fault signals are collected from local measurements to examine the outcomes of the proposed *** detection is carried out for all faults,(i.e.,cable and arc faults)under two cases of fault resistance and distance variation,with the assistance of primary and secondary detection techniques,***-order differential current derivatived2I3 dt2and sliding mode window-based Pearson’s correlation *** fault classification a novel approach using modified multifractal detrended fluctuation analysis(M-MFDFA)is *** advantage of this method is its ability to estimate the local trends of any order polynomial function with the help of polynomial and trigonometric *** also doesn’t require any signal processing algorithm for decomposition resulting and this results in a reduction of computational *** detected fault signals are directly passed through the M-MFDFA classifier for fault type *** enhance the performance of the proposed classifier,statistical data is obtained from the M-MFDFA feature vectors,and the obtained data is plotted in 2-D and 3-D scatter plots for better *** fault distance estimation is carried out for all types of faults in the DC ring bus microgrid with the assistance of recursive least squares with a forgetting factor(FF-RLS).To verify the performance and superiority of the proposed classifier,it is compared with existing classifiers in terms of features,classification accuracy(CA),and relative computational time(RCT).

关键词： DC ring microgrid Differential current Fault resistance Detection Classification Fault location estimation Multifractal detrended fluctuation analysis

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Microwave-assisted extraction of organochlorine pesticides from sediments and determination by gas chromatograph with electron capture detection

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Chinese Journal Of Geochemistry 2006年第B8期25卷 202-203页

作者： Rama Mohan Kurakalva Narasimha Murthy Nyasavajhala Phani Homeshwari Mamidi Venkata anjaiah Kanukuntla Envrionmental Geochemistry Group National Geophysical Research Institute Hyderabad-500007 India Geochemistry Group National Geophysical Research Institute Hyderabad-500007 India

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