Ortalama diferansiyel gelişim algoritmasının kayıplı sabit düşülü kısa dönem hidrotermal koordinasyon problemine uygulanması

Abstract

Kısa dönem hidrotermal koordinasyon problemleri (STHCP), termal ve hidrolik üretim birimlerine sahip güç sistemlerini içerir. Sistemdeki hidrolik üretim birimlerinin rezervuarlarının geniş olduğunu ve bu durumda, rezervuarlardaki suyun işletme süresi boyunca çoğunlukla aynı kaldığı varsayılır. Bu özelliğe sahip hidrolik üretim birimleri ile kısa dönem hidrotermal koordinasyon problemleri sabit düşülü STHCP olarak adlandırılır. Sabit düşülü STHCP hem elektriksel hem de hidrolik kısıtları içerir. Her bir hidrolik üretim biriminin rezervuarına giren ve çıkan su miktarı, rezervuar kapasitesi ve rezervuarda depolanan su miktarı gibi değişkenler hidrolik kısıtlar olarak bilinir. Yeni geliştirilen meta sezgisel algoritmalardan biri olan ortalama diferansiyel gelişim (ADE) algoritması, STHCP'yi sabit bir düşü ile çözmek için kullanılmıştır. Güç sisteminin iletim hattı kayıpları Newton-Raphson yük akışı yöntemi kullanılarak hesaplanmıştır. Bu çalışmada, sabit düşülü kayıplı STHCP termik üretim birimlerinin giriş ve çıkış karakteristiklerinin hem konveks hem de konveks olmayan karakteristiklere sahip olduğu iki durum için çözülmüştür. Her iki durumdaki problemlerin çözümlerinden elde edilen sonuçlar tartışılmıştır.

Keywords

• Hidroelektrik-termal güç üretimi
• Newton yöntemi
• Güç dağıtımı
• Güç üretim dağıtımı
• Evrimsel hesaplama.

Application of Average Differential Evolution Algorithm to Lossy Fixed Head Short-Term Hydrothermal Coordination Problem

Abstract

Short-term hydrothermal coordination problems (STHCP) include power systems with thermal and hydraulic production units. Suppose the reservoirs of the hydraulic production units in the system are vast. In that case, it is assumed that the water in the reservoirs stays mostly the same during the operation period. Short-term hydrothermal coordination problems with hydraulic production units having this feature are called constant-head STHCP. Constant-head STHCP includes both electrical and hydraulic constraints. Variables such as the amount of water entering and leaving the reservoir of each hydraulic production unit, the reservoir capacity, and the amount of water stored in the reservoir are known as hydraulic constraints. The average differential evolution (ADE) algorithm, one of the newly developed meta-heuristic algorithms, is applied to solve the STHCP with a fixed head. Transmission line losses of the power system are calculated using the Newton-Raphson load flow method. In this study, the lossy STHCP with fixed head is solved for two cases where the input and output characteristics of the thermal generation units have both convex and non-convex characteristics. The results obtained from the solutions to both cases' problems are discussed.

Keywords

• Hydroelectric‐thermal power generation
• Newton method
• Power distribution
• Power generation dispatch
• Evolutionary computation.

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