مدیریت توان راکتیو در شبکه‌های توزیع فشار ضعیف با استفاده از قابلیت و اضافه ظرفیت اینورترهای هوشمند منابع فتوولتائیک

روش‌های هوشمند در صنعت برق

مقاله 2، دوره 14، شماره 56، اسفند 1402، صفحه 21-42   

نوع مقاله: مقاله پژوهشی

نویسندگان

سعید سوری؛ حسین محمدنژاد شورکائی^* ؛ سودابه سلیمانی مورچه خورتی؛ سیدبابک مظفری

دانشکده مکانیک، برق و کامپیوتر - واحد علوم تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

: از آنجایی که ادغام منابع فتوولتائیک (PV) خورشیدی در شبکه توزیع فشار ضعیف در سال‌های اخیر به سرعت رو به افزایش است، استفاده از قابلیت اینورترهای منابع فتوولتائیک می‌تواند فرصتی برای بهبود شاخص‌های فنی و اقتصادی از طریق مدیریت توان راکتیو در شبکه‌های توزیع ولتاژ پایین باشد. این مقاله جهت بهبود افت ولتاژ و افزایش درآمد ناشی از فروش برق، با استفاده از قابلیت اینورتر PV و خازن ثابت، مدل بهینه­ای برای مدیریت توان راکتیو پیشنهاد می‌کند. در این روش ظرفیت بهینه اینورتر PV همزمان با مکان و تعداد خازن ثابت مشخص می‌­شود تا سرمایه‌گذاری برای اینورتر PV، خازن ثابت و هزینه عملیاتی حداقل و درآمد فروش برق حداکثر گردد. در این راستا، طول عمر و هزینه اضافه ظرفیت اینورتر PV، جهت ارزیابی فنی و اقتصادی سالانه لحاظ می‌گردد. در این مطالعه معادلات پخش بار همراه با محدودیت‌های فنی در یک مدل برنامه‌ریزی مخروطی مرتبه دوم ادغام شده‌اند. دو شبکه توزیع فشار ضعیف با دیتاهای واقعی و با استفاده (کدنویسی) از نرم­افزار متلب به منظور نشان دادن اثر بخشی مدل پیشنهادی شبیه­سازی شده است. مقایسه روش پیشنهادی مدیریت توان راکتیو با روش‌های مرسوم، تغیرات قابل ‌توجه مطلوبی، برای سرمایه‌گذاری، هزینه تلفات انرژی، بهبود شاخص انحراف ولتاژ و درآمد فروش برق را نشان می‌دهد.

کلیدواژه‌ها

اینورتر فتوولتائیک؛ توان راکتیو؛ خازن؛ شبکه‌های توزیع

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