Flicker source detection including fixed speed wind turbines using empirical mode decomposition

Document Type : Article


Department of Electrical and Computer Engineering, Semnan University, Semnan, Postcode: 35131-19111, Iran


This study describes an approach to identify multiple flicker sources at the point of common coupling (PCC). The voltage signals of different flicker sources such as the electrical arc furnace, the fixed-speed wind turbine, and the diesel-engine driven generator were recorded at the PCC. For this purpose, various aerodynamic and mechanical faults of a wind turbine such as wind shear and tower shadow, gearbox tooth-breaking, blade crash, pitch angle error and various mechanical faults of diesel-engine driven generator such as misfiring, exciter, and governor error, are considered. After acquiring voltage signals of various faults, the empirical mode decomposition (EMD) as a robust signal processing technique for extracting useful features was used. Then, for reducing required memory space and computational burden, the minimal-redundancy-maximal-relevance (MRMR) and the symmetric uncertainty (SU) as the feature selection methods were applied. Also, for increasing the efficiency of feature selection methods, the cooperative game-theoretic method was utilized. Afterward, two classifiers based on the Naive-Bayes and the support vector machine (SVM) are used to detect the faults. Simulation results are presented to validate the effectiveness of the proposed method.


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Volume 30, Issue 5
Transactions on Computer Science & Engineering and Electrical Engineering (D)
September and October 2023
Pages 1743-1763