تعیین اولویت قطع خطوط متصل به پست برای کاهش خسارات ناشی از بمب‌های گرافیتی

غفارپور, رضا; احمدی, امیر

تعیین اولویت قطع خطوط متصل به پست برای کاهش خسارات ناشی از بمب‌های گرافیتی

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ علوم و تحقیقات تهران

² دانشگاه شهید بهشتی

چکیده

یکی از کاربردهای نظامی گرافیت تولید بمب گرافیتی است. پست برق (محلی که چند خط به هم میرسند) بهترین محل برای حمله گرافیتی است؛ زیرا با یک حمله چند خط از مدار خارج خواهد شد. هدف از این پژوهش ارائه طرحی برای کاهش خسارات ناشی از حملات گرافیتی و افزایش پایداری دینامیکی سیستم قدرت است. طرح پیشنهادی به اینصورت است که قبل از برخورد الیاف گرافیت به شبکه و قطع خطوط متصل به پست توسط سیستم حفاظتی، خطوط با یک برنامهریزی مشخص و از پیش تعیینشده قطع گردند. بهمنظور قطع برنامه ریزی‌شده خطوط ابتدا باید ترتیب و اولویت قطع خطوط مشخص شده و سپس زمان قطع هر خط مشخص گردد. برای تعیین اولویت بندی خطوط جهت قطع از شاخص استاتیکی میانگین نرخ تغییرات توان اکتیو خطوط و برای تعیین فاصله زمانی بین قطع خطوط از شاخص دینامیکی خیز اول ژنراتورها استفاده شده است. طرح پیشنهادی روی شبکه 39 باسه IEEE پیادهسازی گردیده است. در نهایت نتایج نشان میدهند که طرح پیشنهادی اثربخش بوده و پایداری دینامیکی شبکه را بهبود می بخشد.

کلیدواژه‌ها

عنوان مقاله [English]

Determination Priority of Lines Interrupt Connected to Substation for Reduction of Graphite Bomb Damages

چکیده [English]

The Graphite Bomb (GB) is one of the military applications of graphite fiber and the power system substations are the critical locations to do this attack. By throwing a GB on a substation, severe short circuit faults and simultaneous lines outages will be very probable which endanger power system stability. With the assumption of graphite attack detection, the purpose of this study is proposing a remedial scheme to reduce the GB damages and to increase the power system dynamic stability consequently. In other words the lines breakers should open by a predetermined plan, before hitting the GB to the substation. To achieve this goal, two issues have been considered, including: the lines outages priority and the time interval between outages. The static index of average rate of change of the line active power and the dynamic index of the first swing of generators used respectively to solve the issues. The proposed scheme performance has been evaluated on the IEEE 39-bus test system and the results show its effectiveness to improve power system dynamic stability.

کلیدواژه‌ها [English]

Graphite Bomb
Short Circuit Fault
Power System Stability
Attacked Substation
Transmission Lines Outage Plan

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