Evrimsel algoritma performanslarının güç akışı analizinde karşılaştırılması

Öz

Enerji sistemlerinde güç akışı, önemli problemlerden biridir. Bu problemin çözümü için farklı klasik çözümleme yöntemlerinden faydalanılmaktadır. Ancak sistemdeki jeneratörlerin güç üretme limitleri, valf yükleme etkileri gibi parametreler güç akışı probleminin ilgili yollarla çözümünü zorlaştırmaktadır. Bu durumda evrimsel algoritmalarla en uygun çözümleri gerçekleştirmek mümkün olabilmektedir. Gerçekleştirilen çalışmada optimal güç akışı problemlerinin çözümü, iki farklı durumda 30 baralı IEEE test sisteminde güncel evrimsel algoritmalar ile eşit başlangıç şartlarıyla karşılaştırmalı olarak gerçekleştirilmiş ve ilgili algoritmaların performans değerlendirmeleri yapılmıştır. Algoritmaların enerji kazanımları elde edilmiş; optimizasyon sonucunda elde edilen en iyi, en kötü ve ortalama değerleri hesaplanmış; yakınsama analizleri karşılaştırmalı olarak gerçekleştirilmiştir. Böylece optimal güç akışı probleminin çözümünde evrimsel algoritmaların etkinlik ve verimlilikleri açıkça ortaya konulmuştur.

Anahtar Kelimeler

• Optimum güç akışı problemi,Optimizasyon,Valf yükleme etkisi,Yakıt maliyeti

Comparison of the evolutionary algorithm's performances on power flow analysis

Abstract

Power flow in energy systems is one of the major problems. Several classical analysis methods are utilized for solving this problem. However, power generation limits, valve loading effects of units also makes the power flow problem become much harder to solve in the system. In this case, it is possible to achieve the most appropriate solutions with evolutionary algorithms. In this study, optimal power flow problems are solved under same beginning conditions, comprehensively performed with evolutionary algorithms which are recently used and associated algorithm performance is analyzed in IEEE 30-bus test system for two cases. Energy gains of algorithms are obtained; the best, worst and mean values found from optimization are evaluated; convergence analyses are performed comparatively. Thus the effectiveness and efficiency of evolutionary algorithms are clearly demonstrated on solution of optimal power flow problems.

Keywords

• Optimal power flow problem,Optimization,Valve point effect,Fuel cost

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