Optimal Reactive Power Dispatch using Improved Differential Evolution Algorithm

Falaghi, Hamid; Najafi, Arsalan

Document Type : Review Article

Authors

Department of Electrical Engineering, University of Birjand, Birjand, Iran

Abstract

Reactive power dispatch plays a key role in secure and economic operation of power systems. Optimal reactive power dispatch (ORPD) is a non-linear optimization problem which includes both continues and discrete variables. Due to complex characteristics, heuristic and evolutionary based optimization approaches have became effective tools to solve the ORPD problem. In this paper a new optimization approach based on improved differential evolution (IDE) has been proposed to solve the ORPD problem. IDE is an improved version of differential evolution optimization algorithm in which new solutions are produced in respect to global best solution. In the proposed approach, IDE determines the optimal combination of control variables including generator voltages, transformer taps and setting of VAR compensation devices to obtain minimum real power losses. In order to demonstrate the applicability and efficiency of the proposed IDE based approach, it has been tested on the IEEE 14 and 57-bus test systems and obtained results are compared with those obtained using other existing methods. Simulation results show that the proposed approach is superior to the other existing methods.الأمثل قوة رد الفعل DISPATCH عن طریق تحسن التفاضلیة تطور الخوارزمیةرد الفعل ارسال قوة یلعب دورا رئیسیا فی عملیة آمنة والاقتصادیة لأنظمة الطاقة. الأمثل على رد الفعل ارسال قوة (ORPD) هو الحل الأمثل لغیر الخطی الذی یشمل کلا من تواصل والمتغیرات المنفصلة. نظرا لخصائص معقدة، وأصبح النهج الأمثل الکشف عن مجریات الأمور والتطور على أساس أدوات فعالة لحل مشکلة ORPD. فی هذه الورقة تم اقتراح نهج التحسین جدید یقوم على تحسین تطور التفاضلیة (IDE) على حل مشکلة ORPD. IDE هو نسخة محسنة من التفاضلیة خوارزمیة التطور الأمثل الذی یتم إنتاج حلول جدیدة فیما یتعلق أفضل حل عالمی. فی النهج المقترح، یحدد IDE الجمع الأمثل للمتغیرات بما فی ذلک مراقبة الفولتیة مولد والصنابیر المحولات ووضع أجهزة تعویض VAR للحصول على الحد الأدنى من الخسائر السلطة الحقیقیة. من أجل إثبات إمکانیة تطبیق وکفاءة نهج IDE على أساس المقترح، وقد تم اختباره على أنظمة اختبار IEEE 14 و 57 باص وحصل تتم مقارنة النتائج مع تلک التی تم الحصول علیها باستخدام طرق أخرى موجودة. وتبین نتائج المحاکاة أن النهج المقترح متفوقة على الطرق الأخرى القائمة.

Keywords

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Majlesi Journal of Electrical Engineering

Optimal Reactive Power Dispatch using Improved Differential Evolution Algorithm

References

References

Volume 8, Issue 1 - Serial Number 1
March 2014
Pages 69-78

Optimal Reactive Power Dispatch using Improved Differential Evolution Algorithm

References

References

Volume 8, Issue 1 - Serial Number 1March 2014Pages 69-78

Volume 8, Issue 1 - Serial Number 1
March 2014
Pages 69-78