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

سوری, سعید; محمدنژاد شورکائی, حسین; سلیمانی, سودابه; مظفری, سیدبابک

نوع مقاله : پژوهشی

نویسندگان

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.

چکیده تصویری

تازه های تحقیق

- بهبود شاخص انحراف ولتاژ با مدیریت توان راکتیو پیشنهادی بدون افزایش هزینه امکانپذیر است.

- سهم جبران توان راکتیو با خازن ثابت و قابلیت اینورتر هوشمند فتوولتائیک در سطوح مختلف نفوذ با در نظر گرفتن درآمد فروش انرژی، تعیین می‌گردد.

- چارچوبی جهت نحوه مدیریت توان راکتیو با استفاده همزمان از خازن ثابت و اینورتر فتوولتائیک در شبکههای توزیع فشار ضعیت تهیه شده است.

- فرمولاسیون جبران توان راکتیو از طریق خازن ثابت و اینورترهای منابع فتوولتائیک آنالیز شده است.

کلیدواژه‌ها

موضوعات

تولید، انتقال و توزیع

عنوان مقاله [English]

Reactive Power Management in Low Voltage Distribution Networks Using Capability and Oversizing of PV Smart Inverters

نویسندگان [English]

Saeed Souri
Hosein Mohammadnezhad Shourkaei
Soudabeh Soleimani
Seyed babak Mozafari

Faculty of Mechanics, Electrical Power and Computer- Science and Research Branch, Islamic Azad University, Tehran, Iran

چکیده [English]

Since integration of solar photovoltaic (PV) sources into the power grid is increasing rapidly in recent years, the capability of photovoltaic source inverters can be an opportunity to improve the technical and economic indicators via reactive power management in low voltage distribution networks grids. This work proposes an optimal planning model to improve the voltage deviation index and increase the revenue sale electricity with the capability of PV inverters and fixed capacitors. In this regard, the optimal capacity of the PV inverter is determined simultaneously with the location and number of fixed capacitors to minimize investment (for PV inverter, fixed capacitor, operating cost) and maximize electricity sales revenue. For this purpose, an innovative model is presented that is able to calculate the annual technical-economic evaluation. To make the costs for investment, operation and maintenance of compensating devices more realistic, the lifespan and additional cost of inverter oversizing in the objective function are modelled. In this article, load flow equations along with technical constraints are integrated into a mixed-integer second-order conic programming model. Two real grids were simulated using MATLAB software in order to show the effectiveness of the proposed model. The comparison of the proposed RPM method with conventional methods confirmed considerable reduction of investment and energy losses in the low voltage distribution networks grids.

کلیدواژه‌ها [English]

Capacitor
distribution grids
photovoltaic inverter
reactive power

Citation: S. Souri, H. Mohammadnezhad-Shourkaei, S. Soleymani, B. Mozafari, "Reactive power management in low voltage distribution networks using capability and oversizing of PV smart inverters", Journal of Intelligent Procedures in Electrical Technology, vol. 14, no. 56, pp. 21-42, March 2024 (in Persian).

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روش‌های هوشمند در صنعت برق

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

مراجع

مراجع

دوره 14، شماره 56
اسفند 1402
صفحه 21-42

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

مراجع

مراجع

دوره 14، شماره 56اسفند 1402صفحه 21-42

دوره 14، شماره 56
اسفند 1402
صفحه 21-42