بازیابی چندمرحله‌ای شبکه‌های توزیع انرژی الکتریکی
محورهای موضوعی : مهندسی برق و کامپیوترساسان قاسمی 1 , امین خدابخشیان 2 , رحمت‌الله هوشمند 3
1 - دانشگاه اصفهان
2 - مهندسی
3 - دانشگاه اصفهان
کلید واژه: بازیابی شبکه توزیعبازآراییبارزدایی بهینه,
چکیده مقاله :
هدف از بازیابی شبکه‌های توزیع، انرژی‌رسانی مجدد به بارهای بی‌برق شده شبکه پس از رخداد خطا است که با تغییر در وضعیت کلیدهای شبکه و در نظر گرفتن قیود شبکه انجام می‌گیرد. در این مقاله، یک روش بازیابی چندمرحله‌ای با کمک روش درخت تصمیم‌گیری اصلاح‌شده جهت بازیابی شبکه‌های توزیع با هدف بازیابی حداکثر بار بی‌برق شبکه با کمترین تعداد کلیدزنی ارائه شده است. روش بازیابی چندمرحله‌ای پیشنهادشده در سه مرحله 1) بازیابی اولیه شبکه با بستن کلیدهای در حالت عادی باز شبکه، 2) بازآرایی و 3) بهینه‌سازی عملیات قطع بار انجام می‌گیرد. به منظور کاهش فضای جستجو در روند بازیابی، کلیدهای شبکه در گروه‌های مختلفی دسته‌بندی شده‌اند که از حرکت به سمت فضاهای جواب نامناسب جلوگیری می‌کند. روش پیشنهادی بر روی شبکه‌های 69باسه و 119باسه استاندارد IEEE اجرا شده است. نتایج به دست آمده بیانگر کارایی و دقت بالای روش پیشنهادی در بازیابی شبکه‌های توزیع می‌باشد.
The purpose of distribution networks restoration is to re-energize the out-of-service loads after fault occurrence which is accomplished by changing the status of network switches and considering the network constraints. In this paper a multi-stage restoration method by the help of the modified decision-making tree algorithm is proposed to maximize the restored loads and also to minimize switching operations. The main stages of this method include initial restoration, reconfiguration and optimal load shedding. To reduce the search space, the network switches are categorized into different sets which avoid having any inappropriate result space. The proposed method is tested on two IEEE 69-bus and 119-bus distribution networks. The simulation results confirm the accuracy and efficiency of the proposed method in distribution network restoration.
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