Research on the Improvement of Cable Ampacity in Dense Cable Trench
Han Zhang,
Shangyu Yu,
Zhenguo Liu,
Xiangmao Cheng,
Yanqi Zeng,
Jian Shu and
Gang Liu (liugang@scut.edu.cn)
Additional contact information
Han Zhang: Chaozhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Guangzhou 521000, China
Shangyu Yu: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Zhenguo Liu: Innovation Department, Guangdong Power Grid Co., Ltd., Guangzhou 510620, China
Xiangmao Cheng: Chaozhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Guangzhou 521000, China
Yanqi Zeng: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Jian Shu: Chaozhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Guangzhou 521000, China
Gang Liu: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Energies, 2024, vol. 17, issue 11, 1-16
Abstract:
Due to the influence of many factors, distribution cables are often densely placed at the bottom of the cable trench. As a result, it is easy for distribution cables to become the thermal bottleneck of the whole transmission line. To address this dilemma, this paper establishes a finite element simulation model of a cable trench to analyze the hot spots of cables with different arrangements in the cable trench. Then, the model’s accuracy is verified based on real temperature rise experiments. For an arrangement with overheating risk, the ampacity improvement method of filling the cable trench with high-thermal-conductivity material was proposed, and the ampacity improvement effect under different filling ratios was assessed. Finally, combined with the analysis of economic benefit and cost, the method of determining the optimal filling ratio was used, and the impact resistance of the cables under the impact of new energy load was analyzed. The results indicate that, for the case of the optimal filling ratio, the cables in the dense cable trench showed superior impact resistance. The investigations in this paper make significant contributions to the promotion of the maximum utilization of cables.
Keywords: distribution cable; cable trench; ampacity improvement; high thermal conductivity material; impact resistance (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
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:11:p:2579-:d:1402510
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