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Talebzadeh, M., Setayeshmehr, A., Barati, H.. (1401). Investigation of Increasing Accuracy Distributed Voltage on the Power ‎Transformer Disks Considering Mutual Induction and Different Grounding ‎System Models. سامانه مدیریت نشریات علمی, 10(3), 228-234. doi: 10.22098/joape.2022.9786.1684
M. Talebzadeh; A. Setayeshmehr; H. - Barati. "Investigation of Increasing Accuracy Distributed Voltage on the Power ‎Transformer Disks Considering Mutual Induction and Different Grounding ‎System Models". سامانه مدیریت نشریات علمی, 10, 3, 1401, 228-234. doi: 10.22098/joape.2022.9786.1684
Talebzadeh, M., Setayeshmehr, A., Barati, H.. (1401). 'Investigation of Increasing Accuracy Distributed Voltage on the Power ‎Transformer Disks Considering Mutual Induction and Different Grounding ‎System Models', سامانه مدیریت نشریات علمی, 10(3), pp. 228-234. doi: 10.22098/joape.2022.9786.1684
Talebzadeh, M., Setayeshmehr, A., Barati, H.. Investigation of Increasing Accuracy Distributed Voltage on the Power ‎Transformer Disks Considering Mutual Induction and Different Grounding ‎System Models. سامانه مدیریت نشریات علمی, 1401; 10(3): 228-234. doi: 10.22098/joape.2022.9786.1684

Investigation of Increasing Accuracy Distributed Voltage on the Power ‎Transformer Disks Considering Mutual Induction and Different Grounding ‎System Models

Journal of Operation and Automation in Power Engineering
دوره 10، شماره 3، اسفند 2022، صفحه 228-234    اصل مقاله (652.72 K)
نوع مقاله: Research paper
شناسه دیجیتال (DOI): 10.22098/joape.2022.9786.1684
نویسندگان
M. Talebzadeh1؛ A. Setayeshmehr* 1، 2؛ H. - Barati1
1Department of Electrical Engineering, Dezful Branch, Islamic Azad University, Dezful, Iran
2Faculty of Electrical and Computer Engineering, Jundi Shapur University of Technology, Dezful, Iran
چکیده
Power equipment are subjected to multiple shock voltages during their operations that are generally caused by a lightning strike, switching of electronic power devices, or transient voltages which across available in the power system. These impulses have a frequency range from several kHz to several MHz, which take pulses at very short intervals in several microseconds. Also, the equipment experiences the peak voltage and subsequently peak currents than their nominal values. These variations in voltage and current values, in very short intervals, have destructive effects on these equipment insulated systems as well as on the accuracy of measuring ground impedance. The primary purpose of this study is to investigate the effect of standard and non-standard voltage impulse on power transformers windings by considering the mutual induction of transformer windings. Furthermore In this paper, by applying lightning pulse on power transformer windings for different models of ground voltage distribution system on different disks of transformer windings terminal (20/0.4KV, 100KVA, 9 disks continuous winding) and the disks voltage are calculated as outputs in MATLAB/Simulink. In previous studies, the calculations were in the time domain, while in this study, the ground impedance was measured in the frequency domain. The simulation results show that considering the model RC and considering the mutual induction, the voltage distribution on the disks is higher than other models. This study provides functional information for improving the design of insulations that are installed between windings and core the results of the present research may lead to the minimization of the dielectric failures. Furthermore, the results of this study can be used in future studies about non-standard impulse voltages. This investigation can certainly lead to modifying available standards or creating new standards in power transformers.
کلیدواژه‌ها
Power Transformer،Disk؛ Impulse Pulses،mutual induction، Ground
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