Power Flow Modeling of Multi-Circuit Transmission Lines

Andrey Kryukov, Konstantin Suslov (), Le Van Thao, Tran Duy Hung and Azat Akhmetshin
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Andrey Kryukov: Department of Transport Electric Power, Irkutsk State Transport University, 664074 Irkutsk, Russia
Konstantin Suslov: Department of Power Supply and Electrical Engineering, Irkutsk National Research Technical University, 664074 Irkutsk, Russia
Le Van Thao: Military Technical Institute of Automation, Hanoi 10000, Vietnam
Tran Duy Hung: Military Industrial College, Hanoi 10000, Vietnam
Azat Akhmetshin: Department of Power Engineering, Kazan State Power Engineering University, 420066 Kazan, Russia

Energies, 2022, vol. 15, issue 21, 1-23

Abstract: To reduce the allocation of land for the construction of electric power facilities, it is possible to leverage multi-circuit overhead transmission lines (MCTLs), in which the conductors of several circuits of different voltage classes are placed on the same tower. The unique features of the arrangement of conductors on MCTL towers cause unequal inductances and capacitances of different phases. In addition, there are significant mutual electromagnetic influences on the line circuits. To account for these factors, it is advisable to model the power flow of electric power systems equipped with MCTLs using the phase frame of reference. On the basis of such models, it is possible to determine the power flows while taking into account lateral and transverse asymmetries and to analyze electromagnetic safety conditions along the routes of multi-circuit transmission lines. We proposed a technique for modeling power flows and electromagnetic fields of multi-circuit power transmission lines, in which conductors of several circuits of different voltage classes are placed on the same tower. The methodology is based on the application of phase coordinates, which are the most natural description of three-phase power systems. The method is versatile enough to be applied to solving the specified problems for MCTLs of different designs. The article presents the results of research aimed at developing a method for modeling MCTL power flows. The results of modeling power flows of an electrical network including a three-circuit power transmission line are presented. The practical use of the models developed by the authors will make it possible to make well-grounded choices regarding the options for the use of multi-circuit power lines.

Keywords: electric power systems; multi-circuit power lines; modeling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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