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A fast protection of hybrid AC/DC distribution network based on feature extraction of DWT

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Abstract

This paper presents a hybrid distribution network protection scheme based on digital signal processing using discrete wavelet transform and feature extraction. The proposed protection scheme can detect all types of faults in both AC and DC sides taking into consideration the disturbances affecting the system. Wavelet transform is used to decompose the signals into different frequency components (approximate and detailed coefficients); then the feature extraction technique is used to extract the characteristics of a certain coefficient. The extracted features are then used to identify different types of faults in the system. Furthermore, a threshold-based decision-making method is employed for fault detection in both AC and DC sides. Simulation results demonstrate that the proposed protection scheme can accurately detect all types of faults in either in AC or DC systems with high accuracy and low computational burden while eliminating the need for a complex training module that requires a lot of data. Also, the proposed scheme has the advantage of depending on local measurement, so that communication infrastructure is not required.

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Authors and Affiliations

  1. Electrical Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt

    Mohammed I. Elmezain & Eman S. Ahmed

  2. Electrical Power and Machines Engineering Department, Faculty of Engineering, Tanta University, Tanta, Egypt

    Hossam A. Abd el-Ghany & Essam M. Rashad

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  1. Mohammed I. Elmezain
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Contributions

The authors confirm contribution to the paper as follows: Authors: Mohammed I. Elmezain, Hossam A. Abd el-Ghany, Essam M. Rashad, and Eman S. Ahmed helped in study conception and model design. Mohammed I. Elmezain and Hossam A. Abd el-Ghany helped in data collection, analysis and interpretation of results. In addition, develo** the theoretical formalism, performing the analytic calculations and perform the numerical simulations. Mohammed I. Elmezain helped in draft manuscript preparation. Essam M. Rashad and Eman S. Ahmed verified the analytical methods and supervised the findings of this work. All authors reviewed the results and approved the final version of the manuscript.

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Elmezain, M.I., Abd el-Ghany, H.A., Rashad, E.M. et al. A fast protection of hybrid AC/DC distribution network based on feature extraction of DWT. Electr Eng (2024). https://doi.org/10.1007/s00202-024-02451-3

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