تعيين متغيرهاي كنترلي در سيستم قدرت به منظور بازيابي حداكثر بار
محورهای موضوعی : مهندسی برق و کامپیوتر
حسين افراخته
1
(دانشگاه تربیت مدرس)
محمودرضا حقی‌فام
2
(دانشگاه تربیت مدرس)
علی یزدیان ورجانی
3
(دانشگاه تربیت مدرس)
کلید واژه: الگوريتم ژنتيكبازيابي باربرنامه‌ريزي مجدد توليدتپ ترانسفورماتورقطع بار,
چکیده مقاله :
در اين مقاله يك روش جديد به منظور بازيابي حداكثر بار با تكيه بر مديريت برخي از متغيرهاي كنترلي در شرايط بروز عيب و قطعي‌هاي جزئي مانند قطع خط انتقال، خروج واحدهاي توليدي و غیره ارائه شده است. متغيرهاي كنترلي كه جهت حداكثرنمودن مقدار بار بازيابي‌شده به كار مي‌رود شامل تپ ترانسفورماتورهاي قدرت، برنامه‌ريزي مجدد واحدهاي توليد و در صورت نياز قطع بار خواهد بود. مدل‌سازي در سه مرحله انجام گرفته و اولويت بکارگيري متغيرهاي كنترلي در مراحل شبيه‌سازي متفاوت است. در مرحله اول از متغير كنترلي تپ ترانسفورماتورهاي قدرت، در مرحله دوم از مدل‌سازي هم‌زمان متغيرهاي كنترلي تپ ترانسفورماتورها و برنامه‌ريزي مجدد واحدهاي توليدي و در مرحله نهایي از بكارگيري هم‌زمان متغيرهاي تپ ترانسفورماتورهاي قدرت، برنامه‌ريزي مجدد واحدهاي توليدي و قطع بار استفاده شده است. با توجه به تعدد متغيرهاي كنترلي و غير خطي بودن فضاي پاسخ نهایي، بهينه‌سازي به كمك الگوريتم ژنتيك انجام شده و شبكه استاندارد IEEE-RTS با 24 شينه جهت بررسي قابليت‌هاي روش پيشنهادي و مطالعات عددي مورد استفاده قرار گرفته است.
This paper presents a new method to maximize load restoration in faulted condition in power systems. Control variables which are used to restore maximum load include tap of power transformers, generation rescheduling, and load shedding in the worst case. Modeling is done in three stages with various control variables arrangements. In the first stage of modeling, power transformer tap is used as a control variable. In the second stage, power transformers taps and generations rescheduling are considered. In the last stage, load shedding as another variable is added to decision variable spaces. Since the number of variables is high and final solution space can be nonlinear, genetic algorithm is used in the optimization process. The capabilities of the proposed method were assessed using IEEE-RTS test system with satisfactory results.
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