مروری بر مشخصههای حفاظتی غیراستاندارد به کار رفته در شبکههای توزیع فعال
الموضوعات :
فرزاد حاجی محمدی
1
,
احسان حیدریان فروشانی
2
,
سید فریبرز زارعی
3
,
حسین مختاری
4
1 - شرکت اختر برق اصفهان، اصفهان، ایران
2 - دانشکده مهندسی برق و کامپیوتر، دانشگاه صنعتی قم، قم، ایران
3 - دانشکده مهندسی برق و کامپیوتر، دانشگاه صنعتی قم، قم، ایران
4 - دانشکده مهندسی برق، دانشگاه صنعتی شریف، تهران، ایران
تاريخ الإرسال : 06 الخميس , محرم, 1444
تاريخ التأكيد : 06 الأربعاء , جمادى الأولى, 1444
تاريخ الإصدار : 02 الإثنين , ذو القعدة, 1444
الکلمات المفتاحية:
ریز شبکه,
تکنیک حفاظتی,
شبکه توزیع,
تولید پراکنده,
ملخص المقالة :
در سالهای اخیر، فرآیند توسعه از سیستمهای قدرت الکتریکی معمولی به شبکههای هوشمند منجر به تعریف و پایهگذاری مفهوم ریزشبکهها (MGs) شده است. در واقع، MG یک ساختار آیندهنگر برای اتصال منابع انرژی تجدیدپذیر، سیستمهای ذخیره انرژی و بارها است. MG را میتوان به عنوان یک شبکه توزیع (DN) محلی شامل تولیدات پراکنده (DGs) خطاب کرد. ادغام چنین منابعی مزایای فراوانی از جمله کاهش تلفات توان، بهبود کیفیت توان و قابلیت اطمینان شبکه و کاهش ازدحام شبکه الکتریکی به همراه دارد. از سوی دیگر، پیکربندی جدید شبکه باعث ایجاد چالشهای متعدد حفاظتی میشود که با طرحهای حفاظتی معمول قابل برطرف کردن نیستند. این مسائل عبارتند از: حرکت توان در دو جهت مختلف، تغییر سطح جریان خطا به دلیل حالتهای مختلف عملکرد شبکه، قطع اشتباه و حفاظت ناحیه کور. بنابراین، طرحهای هماهنگی حفاظتی جدید و کارآمدی برای MGها و DN شامل DGها تعمیم یافته است. این مقاله مروری بر تکنیکهای حفاظتی اعمال شده جهت کاهش تأثیر DGها بر DN را ارائه میکند.
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