A Review of the Developments in Capacity-Uprating Conductors for Overhead Transmission Lines
Source abstract
Abstract
Globally escalating electricity demand necessitates substantial power grid capacity expansion. Current transmission line capacity enhancement technologies are seriously constrained by factors including limited accuracy of computational models, elevated line losses, requirements for new line construction, and substantial capital investment. Capacity-uprating conductors, recognized for their superior current-carrying performance and cost-effective retrofitting, represent one of the most viable solutions for transmission augmentation. However, their large-scale deployment remains impeded by increased line losses and high costs. This review systematically analyses critical constraints on transmission line ampacity through computational modeling and elucidates conductor heat dissipation pathways. Based on this foundation, we synthesize recent advancements in capacity-uprating conductors across three key dimensions: structural optimization, material engineering, and passive radiative cooling technologies. We concurrently evaluate their applications in power transmission projects and explore promising future development directions. This review aims to provide a theoretical foundation, guiding next-generation capacity enhancement solutions for grid modernization.
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Research context
OpenAlex topics: Thermal Analysis in Power Transmission · Lightning and Electromagnetic Phenomena · Icing and De-icing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Electric Power Science of Guizhou Power Grid Co., Ltd., Guiyang 550002, China
Anshun Power Supply Bureau of Guizhou Power Grid Co., Ltd., Anshun 561000, China
Liupanshui Power Supply Bureau, Guizhou Power Grid Co., Ltd., Liupanshui 553000, China
College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China
Funding
Electric Power Research Institute of Guizhou Power Grid Co., Ltd., China
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