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ارزیابی و پیش‌بینی اثرات اضافه ولتاژهای ناشی از صاعقه بر روی شبکه‌های توزیع پیچیده با مدل‌سازی فرکانس بالا اجزای آن | ||
| مدل سازی در مهندسی | ||
| مقاله 20، دوره 16، شماره 53، تیر 1397، صفحه 243-258 اصل مقاله (1.74 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/jme.2017.6135. | ||
| نویسندگان | ||
| فریدالدین صفایی1؛ نبی اله رمضانی* 2؛ میلاد نیاز آذری1 | ||
| 1دانشگاه علم و فناوری مازندران | ||
| 2گروه برق- دانشکده برق و کامپیوتر- دانشگاه علم و فناوری مازندران | ||
| تاریخ دریافت: 07 دی 1395، تاریخ بازنگری: 30 مرداد 1396، تاریخ پذیرش: 05 مهر 1396 | ||
| چکیده | ||
| در این مقاله با مدل‌سازی رفتار گذرای تمامی اجزای شبکه توزیع، اضافه ولتاژهای ناشی از برخورد مستقیم و غیرمستقیم صاعقه پیش‌بینی‌شده است. تأثیر پارامترهایی چون مقدار پیک جریانی صاعقه، سیستم زمین با در نظر گرفتن مدل‌های فرکانس بالای آن و پدیده غیرخطی یونیزاسیون خاک، مدل بارهای مختلف، مقاومت ویژه خاک موردبررسی قرارگرفته است. همچنین تأثیر ساختمان‌های بلند مجاور خطوط توزیع شهری و نقش آن در حذف برخی از برق‌گیرها، تأثیر استفاده از سیم گارد در مناطق صاعقه خیز و اﺳـﺘﻔﺎده از ﻛﺎﺑـﻞ در ﻣﺤﻞ اﺗﺼﺎل ﺧـﻂ ﻫـﻮاﻳﻲ ﺑـﻪ ﺗﺮاﻧـﺴﻔﻮرﻣﺎﺗﻮر به‌موجب کاهش اضافه ولتاژها مورد ارزیابی قرارگرفته است. یک الگوریتم پیشنهادی مناسب با لحاظ کردن پارامترهای مؤثر بر اضافه ولتاژهای ناشی از صاعقه برای ارزیابی اثرات این اضافه ولتاژها در شبکه توزیع ارائه شده است. نتایج این پژوهش می‌تواند در انتخاب سطح عایقی مناسب تجهیزات شبکه توزیع، ارزیابی اقتصادی طراحی شبکه و بررسی حذف و اضافه نمودن برق‌گیرها مورد استفاده قرار گیرد. | ||
| کلیدواژه‌ها | ||
| شبکه توزیع؛ برخورد مستقیم و غیرمستقیم صاعقه؛ مدل سازی فرکانس بالا؛ اضافه ولتاژه گذرا | ||
| عنوان مقاله [English] | ||
| Evaluation and Prediction of Over-Voltages Effects Caused by Direct/Indirect Lightning Stroke on Complex Power Distribution Networks Using High Frequency Modeling of the Components | ||
| نویسندگان [English] | ||
| faridodoin safaei1؛ nabiollah ramezani2؛ milad niazazari1 | ||
| 2Electrical and Computer Department, Electrical engineering group- University of Science and Technology of Mazandaran | ||
| چکیده [English] | ||
| In this paper by transient behavior modeling of all components in the distribution network, the overvoltages caused by direct and indirect of lightning strokes has been predicted. The influence of different parameters have been studied such as lightning current maximum, grounding system with considering its high frequency models and nonlinear phenomenon of soil ionization, the different load models and soil resistivity. Also the effects of different conditions have been evaluated such as the adjacent buildings in urban distribution lines and its role to remove some of surge arresters, use of shielding wire in some areas with high density of lightning, use of cables at the junction of overhead line transformer to reduce the over-voltages. An appropriate algorithm is proposed by considering the parameters affecting lightning overvoltages to evaluate the effects of these overvoltages on the distribution network. The results of this study can be used in choose of the appropriate insulation level for distribution network equipment, economic evaluation in network design and removal and addition of surge arresters. | ||
| کلیدواژه‌ها [English] | ||
| Distribution Network, Direct and Indirect of Lightning, High Frequency Models, Transient Over-Voltage | ||
| مراجع | ||
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