طراحی بهینه و تحلیل محدودکننده جریان خطای مبتنی بر راکتور سری متغیر با هسته هوایی
محورهای موضوعی : مهندسی برق و کامپیوتر
مسلم امینی فسخودی
1
(دانشكده مهندسی برق، دانشگاه یزد)
علی اکبر دامکی علی آباد
2
(دانشكده مهندسی برق، دانشگاه یزد)
کلید واژه: جریان اتصال کوتاه, راکتور سری متغیر, اندوکتانس, بهینه سازی, ارزیابی نتایج,
چکیده مقاله :
گستردگی شبکه های برق و افزایش سطح اتصال کوتاه باعث شده است که به کارگیری تجهیزاتی برای محدود کردن خطاهای اتصال کوتاه اجتناب ناپذیر باشد. یکی از این تجهیزات، محدودکننده های جریان خطای مبتنی بر راکتور متغیر می باشد که در عین سادگی ساختار، عملکرد مؤثری دارند. در این مقاله به طراحی بهینه یک محدود کننده جریان خطای جدید مبتنی بر راکتور سری متغیر پرداخته شده است. با توجه به اهمیت بالای پارامترهایی نظیر سرعت عملکرد، اندوکتانس اولیه و اندوکتانس نهایی محدودکننده، به دست آوردن ابعاد بهینه طرح پیشنهادی جهت دستیابی به بهترین عملکرد ممکن بسیار مهم است. به همین منظور پس از معرفی طرح مذکور به طراحی بهینه طرح پیشنهادی پرداخته شده و سپس نتایج به دست آمده از بهینه سازی مورد ارزیابی و مقایسه با نتایج حاصل از طراحی اولیه قرار گرفته است. برای تحلیل و ارزیابی محدود کننده و بررسی میزان تأثیر پارامترها بر نحوه عملکرد آن از مدل تحلیلی مبتنی بر روابط حاکم بر راکتور استفاده شده است. نتایج حاصل از بهینه سازی نشان می دهد طرح نهایی از عمکلرد بسیار بهتری نسبت به طرح اولیه برخوردار است.
With the ongoing growth of the power networks and the increase of the short circuit current level in the power network, it’s necessary to use the equipment for limiting the short circuit faults. One of these equipment is fault current limiters (FCLs) based on variable reactor that they have simple structure and effective performance. This paper presents an optimal design of new fault current limiter based on variable series reactor. It is very important to obtain the optimal dimensions of the proposed FCL to achieve the best performance with considering parameters of the FCL such as performance time, initial inductance and final inductance. Hence, at the first, the proposed plan is introduced and then an analytical modeling based on equations of the reactor is used to evaluate and optimize the proposed FCL. Finally, the results of optimization are compared with results of primary design. These results confirm that the performance of optimal plan is much better than the primary plan.
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