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Modeling Rogowski Coils for Monitoring Surge Arrester Discharge Currents

Computer Systems Science & Engineering 2022年第8期42卷 439-449页

作者： Nehmdoh A.Sabiha Hend I.Alkhammash Department of Electrical Engineering Faculty of EngineeringMenoufia University32511Shebin ElkomEgypt Department of Electrical Engineering College of EngineeringTaif University21944TaifSaudi Arabia

Rogowski coils(RCs)are widely used to measure power or high frequency currents based on their *** this paper,two types of RCs that are circular(traditional)and cylindrical shapes wound using wire covered by varnish are *** construction is carried out to be suitable for monitoring the discharge current of the surge arrester installed in the distribution *** high frequency RC modeling for both types considering transfer function is ***-integrating for both types is ***,the experimental tests using function generator for both coils are carried out to identify the parameters of the transfer function representing the introduced *** measured signals for current and induced voltages are denoised for the parameter identification *** denoised process is achieved using the MATLAB code‘wdenoise’while the parameters are estimated using the system identification *** of the proposed model is achieved using experimental results for the two *** sensitivity of the two coils is investigated based on the induced output *** application concerning the two coils for monitoring the discharge current of the surge arrester is *** results confirm the accuracy of the introduced RC model,as well as the performance of the cylindrical shape,is better than the traditional *** simulation is carried out using MATLAB and ATPDraw programs.

关键词： Rogowski coil surge arrester discharge current frequency response parameters dentification denoised signal

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