Optimal Transmission Line Coupling Generation System Design for Rural Electrification

• Published in: IEEE transactions on power delivery Vol. 36; no. 4; pp. 1964 - 1973
• Main Authors: Chaves, J. S., Acosta, J. S., Tavares, M. C.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-08-2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Capacitance; Conductors; Design; Design optimization; Distributed generation; Electric fields; Electrification; Energy harvesting; Genetic algorithms; Induced voltage; Inductors; Mathematical model; optimization; Poles and towers; power tap; Power transmission lines; Systems design; Transmission lines; Wires
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/TPWRD.2020.3017376

An electric potential appears at floating wires located within a strong electric field. This phenomenon can be used to supply small isolated communities situated close to Extra-High Voltage transmission lines. This non-conventional distributed generation system has been studied for the last years. However, to improve the power generation system the optimal position of the floating wires, number of wires used, bundle radius, and type of wires must be properly identified. This paper presents a mathematical model solved with genetic algorithm to design a collector system with optimized induced voltage and minimized project cost, identifying the optimal reactor used for voltage regulation. The algorithm was applied to design a collector system that can tap-off 100 kW from a 230 kV transmission line. The trade-off between objectives and the Pareto optimal solutions were evidenced via several simulations using the weighting sum approach. These results allowed to identify a final geometry according to a-posteriori designer preferences.