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طراحی یک سیستم کنترل افتی تطبیقی برای ریزشبکههای DC با در نظر گرفتن ماهیت متغیر توان منابع تولید پراکنده | ||
مدل سازی در مهندسی | ||
دوره 23، شماره 82، مهر 1404، صفحه 205-222 اصل مقاله (811.2 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22075/jme.2025.34139.2669 | ||
نویسندگان | ||
زهرا کریمیان؛ مهدی منادی* ؛ محسن صنیعی؛ سید قدرت اله سیف السادات | ||
دانشکده مهندسی برق، دانشگاه شهید چمران اهواز، اهواز، ایران | ||
تاریخ دریافت: 26 اردیبهشت 1403، تاریخ بازنگری: 10 اردیبهشت 1404، تاریخ پذیرش: 27 اردیبهشت 1404 | ||
چکیده | ||
در این مقاله یک روش کنترل افتی تطبیقی برای اصلاح نقاط ضعف روش کنترل افتی کلاسیک در ریزشبکههای DC ارائه شدهاست. در این روش، ریزشبکه DC به یک واحد کنترل متمرکز مجهز میشود که الگوریتم اصلاح پارامترهای کنترل افتی در آن پیادهسازی شده و سپس به سیستمهای کنترل کانورترهای هرکدام از DGها اعمال میشود. پارامترهای کنترل افتی در این مقاله بهگونهای انتخاب میشوند که در هر لحظه، ضمن حفظ تعادل بار و تولید در ریزشبکه، میزان تلفات ریزشبکه، مجموع کلی انحراف ولتاژ در شینها و نیز تفاوت در بارگذاری DGها را نیز در مقدار بهینه خود نگه دارد. این روش، همچنین اثر وجود مقاومت کابلها و نیز موازی نبودن DGها در میزان خطای تقسیم جریان را پوشش داده و ازاینرو استفاده از آن برای ریزشبکههای چندشینه نیز بهراحتی امکانپذیر است. برای ارزیابی روش پیشنهادی در این مقاله از ساختار (سختافزار در حلقه) HIL استفاده شدهاست تا برخی از تفاوتهای موجود بین نتایج مبتنی بر شبیهسازی با نتایج عملی پوشش داده شود. | ||
کلیدواژهها | ||
کنترل افتی تطبیقی؛ ریزشبکه DC؛ منابع تولید پراکنده | ||
عنوان مقاله [English] | ||
Design of An Adaptive Droop Control System for DC Microgrids Considering the Intermittent Behavior of DGs | ||
نویسندگان [English] | ||
Zahra Karimian؛ Mehdi Monadi؛ Mohsen Saniei؛ S.Ghodratollah Seifossadat | ||
Electrical Engineering Department, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
چکیده [English] | ||
To overcome the weaknesses of classic droop control, in this paper, an adaptive droop control system is presented for DC microgrids. In this method, the DC microgrid is equipped with a centralized control unit which includes an adaptive droop control algorithm for modifying the drop control coefficients and sending them to the de-centralized control units of the DGs converters. The droop coefficients are calculated based on the proposed process to not only satisfy the load-generation balance in the study microgrid but also minimize the grid losses, voltage deviations, and differences in DGs' loading. The method, moreover, covers the effects of cable resistances on the accuracy of the droop control and can be implemented in multi-terminal microgrids. To provide a more accurate evaluation than simulation-based tests, the proposed method was tested on a hardware-in-the-loop (HIL) structure in which the proposed algorithm is implemented on a microprocessor and connected to the simulated study system. | ||
کلیدواژهها [English] | ||
Adaptive droop control, DC micro-grid, Distributed generation resources | ||
مراجع | ||
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