طراحی کنترل کننده مقاوم SVC مبتنی بر WAMS با در نظر گرفتن نامعینی تأخیر زمانی سیگنال های راه دور

نویسندگان

1 عضو هیئت علمی دانشکده مهندسی -دانشگاه شهرکرد

2 عضو هیئت علمی بخش مهندسی برق - دانشگاه شهید باهنر کرمان

3 فارغ التحصیل دانشگاه رفسنجان

چکیده

چکیده: سیستم اندازه­گیری محدوده وسیع (WAMS)، از طریق اندازه­گیری سیگنال راه­ دور از سراسر سیستم قدرت و ارسال آن­ها توسط خطوط مخابراتی به کنترل­کننده محدوده وسیع (WAC)، باعث میراسازی مؤثر نوسانات بین ناحیه­ای می­شود. یکی از مسائل مهم وجود تأخیری زمانی در انتقال سیگنال­های اندازه­گیری­شده بهWAC  است که می­تواند در عملکرد کنترلی WAC در میراسازی نوسانات بین ناحیه­ای اختلال ایجاد کند. یکی از راه­های غلبه بر این مشکل، درنظرگرفتن تأخیر ­زمانی در مرحله طراحی کنترل­کننده است تا از عملکرد مؤثر WAC اطمینان حاصل شود. در این مطالعه با توجه به خاصیت نامعینی تأخیر زمانی، استفاده از تقریب پاد و تبدیل کسری خطی (LFT) جهت مدل­سازی تأخیر زمانی پیشنهاد شده و در مرحله طراحی WAC از روش حساسیت مرکب ∞H و تبدیل مسئله به LMI استفاده شده است. نتایج حاصل از شبیه­سازی در یک سیستم 16 ماشینه-68 باسه نشان می­دهد کهWAC  طراحی­شده جهت اعمال سیگنال پایدارساز به SVC، در گستره وسیعی از دامنه تغییرات تأخیر زمانی عملکرد مقاومی جهت میرایی نوسانات حاصل از اغتشاش از خود نشان می­دهد.

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