شبیه‌سازی عددی میدان الکتریکی و تحلیل توزیع پتانسیل در مقره‌ پلیمری 20 کیلوولت تحت تأثیر عیوب مکانیکی و الگوهای مختلف آلودگی

قربانی پاشاکلایی, مهرداد; جزائری, مصطفی; نیاستی, محسن; سیدبرزگر, سیدمیثم

doi:10.22075/jme.2025.37088.2825

شبیه‌سازی عددی میدان الکتریکی و تحلیل توزیع پتانسیل در مقره‌ پلیمری 20 کیلوولت تحت تأثیر عیوب مکانیکی و الگوهای مختلف آلودگی

نوع مقاله : مقاله پژوهشی

نویسندگان

مهرداد قربانی پاشاکلایی ¹

مصطفی جزائری ¹

محسن نیاستی ¹

سیدمیثم سیدبرزگر ²

¹ دانشکده مهندسی برق و کامپیوتر، دانشگاه سمنان، سمنان، ایران

² گروه مهندسی رباتیک و برق، دانشگاه صنعتی شاهرود، شاهرود، ایران

10.22075/jme.2025.37088.2825

چکیده

رسوب غیریکنواخت آلودگی بر روی سطح مقره‌ها، همراه با عیوب مکانیکی، عملکرد مقره‌های خطوط هوایی را به‌طور قابل‌توجهی تحت تأثیر قرار می‌دهد. با این‌حال، تاکنون مطالعات جامعی در زمینه تأثیر هم‌زمان انواع آلودگی غیریکنواخت و عیوب مکانیکی بر عملکرد مقره‌ها انجام نشده است. در این مقاله، اثر آلودگی یکنواخت و غیریکنواخت از نوع رینگی (RNU) و رینگی-طولی (RLNU)، همراه با عیوب مکانیکی نظیر چترک معیوب و هسته معیوب، بر توزیع پتانسیل و میدان الکتریکی یک نمونه مقره پلیمری ۲۰ کیلوولت بررسی شده است. شبیه‌سازی‌ها با استفاده از نرم‌افزار COMSOL Multiphysics انجام شده و نتایج مورد تحلیل قرار گرفته‌اند. در حالت آلودگی غیریکنواخت از نوع طولی، شدت آلودگی در نواحی مجاور الکترودها سنگین و در ناحیه میانی سبک در نظر گرفته شده است. همچنین، در حالت آلودگی غیریکنواخت از نوع رینگی، مساحت نواحی داخلی و خارجی برابر فرض شده و آلودگی در ناحیه داخلی مقره اعمال شده است. نتایج نشان می‌دهد که بیشینه میدان الکتریکی در شرایط آلودگی یکنواخت نسبت به سایر الگوهای آلودگی مقدار بیشتری دارد. علاوه بر این، وجود عیوب مکانیکی، از جمله آسیب در چترک و هسته، تأثیر قابل‌توجهی بر توزیع پتانسیل و بیشینه میدان الکتریکی دارد. به‌گونه‌ای که در مقایسه با مقره سالم، حضور این عیوب موجب افزایش بیشینه میدان الکتریکی در سه ناحیه فشار قوی، ناحیه میانی، و فشار ضعیف می‌شود.

کلیدواژه‌ها

مقره پلیمری

توزیع پتانسیل الکتریکی

توزیع میدان الکتریکی

عیوب مکانیکی

آلودگی غیریکنواخت

روش اجزای محدود

موضوعات

مهندسی برق قدرت

عنوان مقاله English

Numerical Simulation of the Electric Field and Potential Distribution Analysis in a 20 kV Polymeric Insulator Under the Influence of Mechanical Defects and Various Non-Uniform Pollution Patterns

نویسندگان English

Mehrdad Ghorbani Pashakolaei ¹

Mostafa Jazaeri ¹

Mohsen Niasati ¹

Seyed Meysam Seyed Barzegar ²

¹ Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran

² Department of Robotic and Electrical Engineering, Shahrood University of Technology, Shahrood, Iran

چکیده English

The presence of non-uniform pollution deposits on the surface of insulators, along with mechanical defects, significantly affects the performance of overhead line insulators. However until now, no comprehensive studies have been conducted on the simultaneous effect of different types of non-uniform pollution and mechanical defects on insulator performance. In this paper the effects of uniform and non-uniform pollution, including the ring-shaped (RNU) and ring-longitudinal (RLNU) types, along with mechanical defects such as a damaged shed and a defective core, on the potential distribution and electric field of a 20 kV polymeric insulator have been investigated. The simulations were performed using COMSOL Multiphysics and the results were analyzed. In the case of longitudinal non-uniform pollution, the pollution severity was assumed to be heavy in the regions near the electrodes and light in the middle region. Additionally for the ring-shaped non-uniform pollution the inner and outer areas were assumed to be equal with pollution applied to the inner region of the insulator. The results indicate that the maximum electric field in the uniform pollution condition is higher than in other pollution patterns. Moreover the presence of mechanical defects, such as damage to the shed and core, has a significant impact on the potential distribution and the maximum electric field. Specifically compared to a healthy insulator the presence of these defects leads to an increase in the maximum electric field in three regions: the high-voltage region the middle region, and the low-voltage region.

کلیدواژه‌ها English

Polymeric insulator

Electric potential distribution

Electric field Distribution

Mechanical defects

Non-uniformpollution

FEM analysis

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