Research on the Measurement of AC Resistance of Overhead Transmission Lines Considering Actual Operating Conditions

Dexin Xie, Zhen Qin, Shian Xie, Jian Jiang, Feng Bai, Jiaqi Li and Gaohui He ()
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Dexin Xie: Economic and Technological Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401121, China
Zhen Qin: State Grid Chongqing Electric Power Company, Chongqing 400015, China
Shian Xie: Economic and Technological Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401121, China
Jian Jiang: Economic and Technological Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401121, China
Feng Bai: Economic and Technological Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401121, China
Jiaqi Li: Chongqing Guanghui Power Supply Service Co., Ltd., Chongqing 400014, China
Gaohui He: College of Engineering and Technology, Southwest University, Chongqing 400715, China

Energies, 2024, vol. 17, issue 24, 1-19

Abstract: The presence of alternating current (AC) resistance in overhead conductors contributes to additional energy losses during electrical energy transmission and affects the current-carrying capacity of the lines. However, a standardized measurement method for AC resistance remains unavailable. This paper presents the design of an experimental platform for measuring the AC resistance of conductors using an electrical measurement approach in conjunction with the least squares method. In the experiments, data were collected for four conductors, including current, AC resistance, and temperature. The study analyzes the relationships among the AC resistance of the conductors, their temperature, and the AC/DC resistance ratio as the current varies. The results from measuring the AC/DC resistance ratio indicate that the platform is effective for AC resistance measurement and can serve as a valuable reference for evaluating the AC losses of existing line conductors.

Keywords: overhead conductors; AC resistance; electrometry; least squares; energy-efficient conductors (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: 2024
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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