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An adaptive fault line detecting method with correlation analysis using energy ratio is proposed based on the features of big capacitance current and high attenuation speed of hybrid transmission lines following single phase earthed fault. Applying wavelet packet decomposition, characteristic waveband of each zero sequence current can be determined by the theory of maximum energy, which can exclude...
A new integrated fault line detecting method using extenics is proposed, for existing methods of fault line detection are affected by fault switching angle and electric arc etc., the accuracy of fault line detection is not satisfied. Three factors of matter-element in single-phase fault line detection are confirmed, which are the possible fault line's aggregate and its correlative characteristic aggregate...
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