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In this paper, Fuzzy C-Means (FCM) algorithm is combined with the immune evolutionary algorithm to propose a new method which can be applied to transformer fault diagnosis. First, the paper makes attributes reduction in decision table with the use of rough set, then the continuous attributes in the decision table use immune evolutionary clustering algorithm for discrete processing, and then builds...
An extraction and reduction method of fault eigenvalue was proposed in this paper. Firstly, fault feature factor was extracted from stator current signal, axial vibration signal and radial vibration signal. Then, using differential matrix in rough sets theory, the extracted fault feature factor was reduced to achieve a more sensitive, more effective fault eigenvalue. Through analysis on these reduced...
According to the disadvantage of D-S theory and the limitation of improved combination rule, a modified combination rule based on rough set is presented. The weight of each evidence is obtained according to its influence degree on D-S combination result. Weighted averaging the evidence in the system, the Dempster combination rule is used to realize information fusion. The numerical example shows that...
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