پخش بار بهينه در شبكه‌هاي انتقال HVAC/HVDC با يك الگوريتم ابتكاري تركيبي
محورهای موضوعی : مهندسی برق و کامپیوتر
سيدجلال سيدشنوا
1
(دانشگاه محقق اردبيلي)
حسین سیفی
2
(دانشگاه تربیت مدرس)
محمدصادق سپاسیان
3
(دانشگاه شهید بهشتی)
کلید واژه: پخش بار بهينه PSO روش تكامل تفاضلي HVDC,
چکیده مقاله :
در اين مقاله مدلي براي پخش بار بهينه در شبكه‌هاي انتقال HVAC/HVDC ارائه شده است. پخش بار بهينه از ابزارهاي اصلي در مطالعات برنامه‌ريزي و بهره‌برداري از شبكه‌هاي برق مي‌باشد. عدم تحدب، غير خطي بودن، وجود متغيرهاي گسسته در كنار متغيرهاي پيوسته و وجود همبستگي بالا بين متغيرها، مسأله پخش بار بهينه را به مسأله‌اي پيچيده تبديل كرده است. در مدل ارائه‌شده اين مقاله براي پخش بار بهينه، پارامترهاي كنترلي شبكه و اتصالات HVDC موجود در آن به‌نحوي تنظيم مي‌شوند كه نياز به تجهيزات اضافي براي عملكرد مناسب شبكه در حالت پخش بار AC حداقل شده و در عين حال شبكه بيشترين حاشيه امنيت را داشته باشد. براي حل مدل ارائه‌شده يك الگوريتم تكاملي تركيبي حاصل از تركيب روش‌هاي ابتكاري PSO و روش تكامل تفاضلي پيشنهاد شده و كارايي مدل و الگوريتم پيشنهادي براي شبكه آزمون 30 باس IEEE مورد آزمايش قرار گرفته است.
In this paper, a model is presented for the optimal power flow of an HVAC/HVDC transmission network. OPF is a fundamental tool in power system operation and planning. The model proposed for optimal power flow includes network control parameters settings and HVDC links parameters tunings. Also, excessive equipment installation for appropriate operation of the network is minimized, while the network security margin is maximized. To solve the proposed model, a hybrid evolutionary algorithm by combining Particle Swarm Optimization (PSO) and Differential Evolution (DE) is proposed. The methodology is tested on IEEE-30 test system and compared with the results from other OPF techniques. Also the impact of HVDC links on OPF studies is illustrated by numerical examples.
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