سامانه ‏های غیرخطی در مهندسی برق

سامانه ‏های غیرخطی در مهندسی برق

کنترل پیش‌بین مدل تطبیقی برای مساله کنترل بار-فرکانس سیستم‌های قدرت بهم‌پیوسته چند ناحیه‌ای با پارامترهای متغیر با زمان

نوع مقاله : مقاله پژوهشی

نویسندگان
دانشکده مهندسی برق و کامپیوتر، دانشگاه حکیم سبزواری، سبزوار
چکیده
با پیشرفت سریع فناوری تولید برق و افزایش تقاضا از سوی کاربران، سیستم‌های قدرت چند ناحیه‌ای بهم‌پیوسته به یک روند  توسعه تبدیل شده‌اند. در این مقاله، یک طرح کنترل پیش‌بین مدل تطبیقی برای کنترل بار-فرکانس (LFC) یک سیستم قدرت چند ناحیه‌ای بهم‌پیوسته در حضور تغییرات پارامتری پیشنهاد شده است. این کنترل‌کننده شامل یک مدل خود رگرسیون با ورودی خارجی (ARX)، یک فیلتر کالمن خطی متغیر با زمان (LTVKF) و یک الگوریتم تخمینگر مدل چندجمله‌ای بازگشتی (RPME) می‌شود. با استفاده از تخمینگر مدل چندجمله‌ای بازگشتی یک مدل ARX با مرتبه کاهش یافته از سیستم قدرت اصلی شناسایی می‌شود و به‌عنوان مدل پیش‌بینی سیستم در کنترل پیش‌بین مدل تطبیقی مورد استفاده قرار می‌گیرد. متغیرهای حالت سیستم با کمک فیلتر کالمن خطی متغیر با زمان رویت می‌شوند و مساله بهینه‌سازی با افق متحرک مقید از طریق برنامه‌ریزی مربعی حل می‌شود. علاوه بر تخمین حاصل از مدل دارای کاهش مرتبه، دنباله کنترلی آینده با استفاده از توابع پایه لاگر تخمین زده می‌شود تا بار محاسباتی کاهش یابد. شبیه‌سازی‌های عددی نشان می‌دهند که کنترل پیش‌بین مدل تطبیقی پیشنهادی در مقایسه با سایر طرح‌های کنترلی، در دفع اغتشاشات بار در سیستم‌های قدرت با پارامترهای متغیر با زمان، کارآمدتر است. 
کلیدواژه‌ها
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  • تاریخ دریافت 27 تیر 1404
  • تاریخ بازنگری 12 آبان 1404
  • تاریخ پذیرش 25 آبان 1404
  • تاریخ اولین انتشار 25 آبان 1404
  • تاریخ انتشار 01 شهریور 1404