Optimal load flow using sequential unconstrained minimization technique (SUMT) method under power transmission losses minimization

• Published in: Electric power systems research Vol. 52; no. 1; pp. 61 - 64
• Main Authors: Rahli, M., Pirotte, P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-1999
• Subjects: Optimal load flow; Power transmission losses; Sequential unconstrained minimization technique algorithm; Sequential unconstrained minimization technique algorithm; Optimal load flow; Power transmission losses
• ISSN: 0378-7796; 1873-2046
• DOI: 10.1016/S0378-7796(99)00008-5

The paper presents a new approach for solving the optimal power flow problem. The problem is solved by a sequential unconstrained minimization technique (SUMT) algorithm which was developed by Fiacco and McCormick. Firstly, we compute real power transmission losses and maintain a constant optimal power flow calculation procedure. Secondly, we propose a new approach for total real power transmission losses, as a linear function of generated real power; its effect and influence on the minimum cost of fuel and the result of real power transmission losses. In the second case, the real power transmission losses are 28% lower then the first case. The proposed approach has been applied for the first time to the 14 bus test system and the results are judged satisfactory.