شناسایی خطاهای آغازین وقایع آبشاری با استفاده از روش تجزیه و تحلیل حالات خطا و اثرات آن

نویسندگان

1 دانشکده مهندسی برق، دانشگاه آزاد اسلامی واحد ساوه

2 دانشکده مهندسی برق و کامپیوتر، دانشگاه صنعتی امیرکبیر

چکیده

خطوط و ترانسفورماتورهای انتقال از مهم‌ترین تجهیزات شبکۀ قدرت‌اند که خروج آن‌ها می‌تواند منجر به خروج‌های پی‌درپی بعدی شود. در این مقاله تلاش شده است با در نظر گرفتن یک مدل شبیه‌سازی خروج آبشاری، خطوط یا ترانسفورماتورهایی که بهره‌برداران با عملیاتی مانند قطع بار و یا کاهش تولید نتوانند از اضافه‌بار شدن آن‌ها جلوگیری کنند، شناسایی شوند. همچنین از روش ارزیابی ریسک تجزیه و تحلیل حالات خطا و اثرات آن برای شناسایی خطوط و ترانسفورماتورهای بحرانی شبکه که به‌عنوان حادثۀ آغازگر خروج‌های آبشاری شناخته می‌شود، استفاده می‌شود. این روش با ارزیابی سه معیارِ شدت اثر خطر، احتمال وقوع خطر و احتمال کشف خطر، عدد اولویت ریسک ترکیبات پیشامدهای ممکن N-K (1< K≤3) در شبکه را که منجر به اضافه‌بار شدن خطوط یا ترانسفورماتورهای انتقال می‌شود، محاسبه و طبقه‌بندی می‌‌کند. اطلاعات اولیۀ این روش بر مبنای محاسبۀ سه شاخص بارگذاری وزن‌دهی‌شدۀ خطوط، ترانسفورماتورها و همچنین پروفایل ولتاژ شینه‌ها به دست می‌آید. روش پیشنهادی در شبکۀ استاندارد 39 شینه IEEE پیاده‌سازی و نتایج آن در مقایسه با سایر روش‌ها، صحت، کارایی و دقت آن را نشان می‌دهد.

کلیدواژه‌ها


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