ارائه یک الگوریتم جدید تغییر سریع حالت کارکرد و کنترل TCSC
محورهای موضوعی : مهندسی برق و کامپیوترمجید نیری‌پور 1 * , محمدمهدی منصوری 2
1 - دانشگاه صنعتی شیراز
2 - دانشگاه صنعتی شیراز
چکیده مقاله :
خازن سری کنترل شده با تریستور (TCSC) به عنوان جبران کننده سری خطوط انتقال در حالت خازنی نقش مهمی در افزایش بارپذیری، کاهش تلفات و بهبود پایداری سیستم دارد. از طرفی انتقال سریع از حالت عملکرد خازنی به سلفی و بالعکس در این المان نقش بسیار مهمی در بهبود پایداری گذرا و افزایش زمان رفع بحرانی خطا دارد که تاکنون چندان مورد توجه قرار نگرفته است. در این مقاله یک روش کاملاً جدید و سریع جهت تغییر وضعیت TCSC از حالت خازنی به سلفی و برعکس ارائه شده است که قادر است در کمتر از نیم سیکل حالت کارکرد TCSC را تغییر دهد. نتایج شبیه سازی نشان دهنده سرعت بسیار بیشتر این روش نسبت به سایر روش‌های موجود بوده که نقش بسیار مهمی در بهبود پایداری‌ها به خصوص پایداری گذرا خواهد داشت.
Thyristor Controlled Series Capacitor (TCSC) has been used for various purposes such as power system stability improving and increasing of loadability, loss reduction, line impedance compensation or power flow control. Fast switching of TCSC from capacitive mode to inductive mode and vice versa following the fault and clearing of it respectively, is an essential key for improving transient and even dynamic stability of power system which have not been considered significantly. In this paper a new algorithm for fast mode-switching and control of TCSC in less than half cycle is proposed for changing capacitive to inductive mode and vice versa in less than half cycle. Simulation results show that the proposed method is faster and more reliable in different conditions than the existing method and can be used more effective in transient and dynamic stability improvement.
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