طراحی کنترل‌کننده مقاوم محدوده وسیع SVC جهت میرایی نوسانات بین‌ناحیه‌ای در سیستم قدرت
محورهای موضوعی : مهندسی برق و کامپیوتر
سعید اباذری
1
(دانشگاه شهرکرد)
عباس عرب دردری
2
(دانشگاه آزاد اسلامی واحد نجف آباد)
مجتبی برخورداری یزدی
3
(دانشگاه شهید باهنر کرمان)
محمدصادق پیام
4
(دانشگاه شهرکرد)
کلید واژه: نوسانات مد بین ناحیه‌ای کنترل مقاوم نامعادلات ماتریس خطی (LMI) SVC کنترل‌کننده محدوده وسیع (WAC),
چکیده مقاله :
یکی از مسایل مهم در سیستم‌های قدرت، افزایش توان انتقالی خطوط می‌باشد. وجود نوسانات بین‌ناحیه‌ای در سیستم‌های قدرت بر ظرفیت توان انتقالی تأثیر می‌گذارد که این تغییرات می‌تواند بر کارکرد مصرف‌کننده‌ها و راندمان شبکه تأثیر منفی داشته باشد. بنابراین بهره‌گیری از روش‌هایی که می‌توانند در کاهش نوسانات بین ناحیه‌ای تأثیرگذار باشند، حائز اهمیت است. استفاده از ادوات FACTS باعث افزایش این توان انتقالی می‌گردد. در این مقاله علاوه بر جایابی SVC، روش حساسیت مرکب ∞H و فرمول‌بندی محاسبه پارامترهای کنترل‌کننده با استفاده از تکنیک LMI جهت اعمال سیگنال کمکی به SVC با هدف بهبود نوسانات سیستم قدرت پیشنهاد گردیده است. این کنترل‌کننده بر سیستم اندازه‌گیری محدوده وسیع (WAMS) متکی می‌باشد. روش‌های پیشنهادی در یک شبکه 16ماشینه- 68باسه با 5 ناحیه پیاده‌سازی گردیده است. نتایج عملکرد خوب و مقاوم کنترل‌کننده در میرایی نوسانات را نشان می‌دهد.
Increasing power transfer capability of existing transmission lines is one of the key issues in the power systems. Inter-area oscillations have effect on the power transfer capability and decrease the network efficiency. On the other hand, FACTS devices can be used to increase the power transfer capability by damping the inter-area oscillations. This paper proposes a Linear Matrix Inequality (LMI) based robust controller design to generate an additional stabilizing signal for a Static VAR Compensator (SVC) in order to increase damping of the inter-area modes. Wide Area Measurement (WAM) has been employed by the controller which is designed based on the H∞ mixed-sensitivity synthesis method. The effectiveness of the method is investigated by a test system consisting of 16 numbers of generators, 68 buses and 5 areas. The results show good and robust performance of the controller in damping the oscillations.
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