Technological Breakthroughs in Medium-Voltage Cables and the Construction of a Modern Energy System

Amid the global energy revolution and the construction of new power systems, medium-voltage cables, as the "core artery" connecting energy production and consumption, are playing an irreplaceable strategic role in supporting urban power grid upgrades, renewable energy integration, and industrial energy efficiency improvements. They are a key pillar in building a safe, efficient, and green modern energy system. Covering the core voltage range of 3.6kV to 35kV, they not only handle energy distribution for high-voltage transmission but also ensure the stable supply of low-voltage power distribution, playing a crucial role in connecting the upper and lower reaches of the power system.

The core competitiveness of medium-voltage cables stems from the collaborative innovation of materials and structures. The widespread use of cross-linked polyethylene (XLPE) insulation material provides them with excellent electrical insulation properties, aging resistance, and thermal stability. Compared to traditional oil-paper insulated cables, they significantly simplify installation and achieve low losses and high reliability over long-term operation. From the concealed installation of urban underground pipelines to the dense power distribution in industrial parks, to the convergence of new energy sources like wind farms and photovoltaic power stations, medium-voltage cables, with their corrosion and mechanical damage resistance, adapt to complex scenarios, ensuring "zero interruption" energy transmission and providing a solid power supply for social production and daily life.

With the accelerated construction of new power systems, medium-voltage cables are evolving towards high reliability, low loss, and intelligence. On a technical level, breakthroughs in the development of weather-resistant XLPE materials enable them to withstand extreme environments such as high cold, high humidity, and strong ultraviolet rays, expanding the application boundaries of new energy projects. Optimized shielding and sheath designs further reduce the risk of partial discharge and enhance operational safety. The integration of intelligent sensing technology, through fiber optic sensing and partial discharge monitoring, enables full-lifecycle cable status warnings, providing data support for smart grid operation and maintenance.

From ensuring the operation of core urban functions to contributing to the realization of the "dual carbon" goals, the strategic value of medium-voltage cables continues to grow. Against the backdrop of the popularization of distributed energy and the expansion of electric vehicle charging networks, it will become a key carrier for optimizing energy allocation and improving grid flexibility. It will be deeply integrated into new power scenarios such as ultra-high voltage grids and microgrids, providing solid technical support and infrastructure guarantees for building a clean, low-carbon, safe and efficient modern energy system.