Minimization of Electric Power Losses on 132 kV and 220 kV Uganda Electricity Transmission Lines

作     者：Ounyesiga Living Stephen Ndubuisi Nnamchi Kelechi John Ukagwu Abubakar Abdulkarim Zaid Oluwadurotimi Jagun Ounyesiga Living;Stephen Ndubuisi Nnamchi;Kelechi John Ukagwu;Abubakar Abdulkarim;Zaid Oluwadurotimi Jagun

作者机构：Department of Electrical Telecom and Computer Engineering SEAS Kampala International University Kampala Uganda Department of Mechanical Engineering SEAS Kampala International University Kampala Uganda Department of Electrical Engineering Faculty of Engineering Ahmadu Bello University Zaria Nigeria Department of Computer Engineering Olabisi Onabanjo University Ago-Iwoye Nigeria 

出 版 物：《Energy and Power Engineering》 (能源与动力工程（英文）)

年 卷 期：2023年第15卷第2期

页      面：127-150页

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Minimization Power Losses Transmission Lines Corona and Ohms Losses Transmission Model 

摘      要：The classical minimization of power losses in transmission lines is dominated by artificial intelligence techniques, which do not guarantee global optimum amidst local minima. Revolutionary and evolutionary techniques are encumbered with sophisticated transformations, which weaken the techniques. Power loss minimization is crucial to the efficient design and operation of power transmission lines. Minimization of losses is one way to meet steady grid supply, especially at peak demand. Thus, this paper has presented a gradient technique to obtain optimal variables and values from the power loss model, which efficiently minimizes power losses by modifying the traditional power loss model that combines Ohm and Corona losses. Optimality tests showed that the unmodified model does not support the minimization of power losses on transmission lines as the Hessian matrix portrayed the maximization of power losses. However, the modified model is consistent with the gradient method of optimization, which yielded optimum variables and values from the power loss model developed in this study. The unmodified (modified) models for Bujagali-Kawanda 220 kV and Masaka West-Mbarara North 132 kV transmission lines in Uganda showed maximum power losses of 0.406 (0.391) and 0.452 (0.446) kW/km/phase respectively. These results indicate that the modified model is superior to the unmodified model in minimizing power losses in the transmission lines and should be implemented for the efficient design and operation of power transmission lines within and outside Uganda for the same transmission voltages.