Preparation and properties of an aluminum conductor with an optical fibre multi-strand carbon-fibre composite core

The Aluminum Conductor Composite Core (ACCC), used in overhead transmission lines, possesses a range of exceptional properties such as high strength, light weight, corrosion resistance, high-temperature resistance, and low sag. In order to address the technical challenges associated with poor bending performance and the lack of effective means for inspection of hidden defects in the composite core, an aluminum conductor with an optical fibre multi-strand carbon fibre composite core has been developed and subjected to performance testing. The results demonstrate that, compared to the single-core conductor, the optical fibre multistrand-core conductor exhibits characteristics such as low density, high tensile strength, excellent bending performance, and a high safety factor. Notably, the multi-strand core boasts a tensile strength of 2980 MPa and a bending performance of 25 D (where D is the diameter of the core). In addition, the optical fibre embedded in the strands of the core can be used as a sensor to detect the hidden defects, thus presenting significant potential for widespread application.