State Grid Beijing joint Han cable shares and other units successfully completed the capital's first 110kV high-voltage cable ablation repair, marking the liquid injection repair technology to achieve a major breakthrough. The technology through the injection of special semi-conductive repair fluid to rebuild the conductive channel, an effective solution to the industry plagued by many years of buffer layer ablation, its prevention and control technology has been certified by the international leading, and the formation of “detection - assessment - repair - monitoring” complete closed-loop program, highlighting the Han cable from the product supplier to the results of the transformation of high-value-added service providers.

This study investigates the morphological variations in 500kV XLPE submarine cables and factory joints, analyzing their impact on dielectric properties and AC breakdown strength. Samples from the cable bulk, cable-joint transition, and factory joint were examined using extraction tests, FTIR, DSC, and XRD. Results show that factory joints exhibit higher crosslinking byproducts, sparser crystal structures, and lower crystallinity compared to the cable bulk, leading to reduced AC breakdown performance. These findings provide critical insights for optimizing XLPE insulation morphology, particularly in submarine cable factory joints.

China is accelerating the construction of Ultra-High Voltage (UHV) transmission projects in 2024, including new ±800kV DC lines such as Gansu-Zhejiang and Tibet-Greater Bay Area, to boost renewable energy integration and cross-regional power allocation. Completed projects like Baihetan-Jiangsu/Zhejiang demonstrate China’s global leadership in UHV technology. State Grid and China Southern Power Grid will invest over 2 trillion yuan in the next five years to build a “9 DC, 13 AC” UHV grid, supporting carbon neutrality goals.

This paper delves into the latest technological advancements in semi - conductive nylon tape, which has become an essential material in the cable industry due to its unique properties. It provides an in - depth analysis of new materials, advanced manufacturing processes, and innovative application - related technologies. These technological improvements have not only enhanced the performance of semi - conductive nylon tape but also broadened its application scope, playing a significant role in promoting the development of modern cable - related industries.

the-difference-between-non-conductive-and-semiconductive-water-blocking-tapes

In the ever-evolving landscape of materials science, the intersection of traditional materials with cutting-edge technology continues to yield remarkable innovations. Among these, the emergence of double-sided semiconductive cotton tape stands out as a groundbreaking development. This unique material seamlessly integrates the versatility of cotton with the electrical conductivity of semiconductors, opening up a world of possibilities across various industries ...