کنترل جریان خطای تولیدات پراکنده مجهز به ژنراتور سنکرون به منظور هماهنگی رله های حفاظتی

الموضوعات :

اصلان صانعی ¹ (دانشکده مهندسی برق، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران)
اسماعیل رک رک ² (گروه برق دانشکده فنی و مهندسی برق، دانشگاه لرستان، لرستان، ایران)
فرهاد نامداری ³ (گروه برق دانشکده فنی و مهندسی برق، دانشگاه لرستان، لرستان، ایران)

تاريخ الإرسال : 12 السبت , ربيع الأول, 1444 تاريخ التأكيد : 24 الأحد , جمادى الأولى, 1444 تاريخ الإصدار : 02 الإثنين , ذو القعدة, 1444

الکلمات المفتاحية: رله‌های اضافه جریان, تولید پراکنده, تپ‌چنجر ترانسفورماتور, ژنراتور سنکرون,

ملخص المقالة :

حضور گسترده تولیدات پراکنده (DG) با بالا بردن سطح اتصال کوتاه، باعث از بین رفتن هماهنگی ادوات حفاظتی در سیستم توزیع می‌شود. با توجه به این که DG‌های از نوع ماشین سنکرون (SMDG) بیشترین مشکل را برای هماهنگی سیستم (رله‌های اضافه جریان) ایجاد می‌کنند؛ در این پایان‌نامه کنترل جریان خروجی ژنراتورهای سنکرون توسط تغییر تپ‌چنجر ترانسفورماتور متصل به آن، هنگام وقوع خطا پیشنهاد شده است. در این روش، مشارکت SMDG‌ها در تغذیه‌ی جریان خطا، با کنترل تپ‌چنجر، محدود می‌شود. قبل از وقوع خطا و متناسب با شرایط سیستم تپ‌چنجر ترانسفورماتور متصل به ژنراتور سنکرون تغییر کرده و باعث کاهش جریان در هنگام بروز خطا می‌شود. روش پیشنهادی روی یک سیستم توزیع نمونه در ETAP پیاده‌سازی شده است؛ نتایج حاصل از شبیه‌سازی کارایی روش پیشنهادی را تأیید می‌کند.

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