POWER TRANSMISSION

Power transmission systems rely on high-capacity, low-loss wires and cables to achieve efficient transmission of electrical energy from power stations to end-users. These wires and cables are required to possess high conductivity, insulation properties, and weather resistance. They must withstand various harsh climatic conditions and external interference to ensure the stable operation of the power grid, providing a reliable power supply for economic and social development.

Wires and cables play a crucial role in the field of power transmission, serving as the vital link between power stations, substations, and end-users, ensuring that electrical energy is delivered efficiently and safely to every corner. Below are the primary applications of wires and cables in the realm of power transmission:

Transmission Lines: High-voltage transmission lines typically employ overhead or underground cables to transport electrical energy from power plants to distant substations. These cables are capable of withstanding high voltages, thereby reducing energy loss during transmission.

Distribution Networks: After high-voltage electricity is converted to low-voltage at substations, distribution networks utilize wires and cables to allocate electrical power to industrial, commercial, and residential users. These cables are usually installed beneath city streets or within buildings.

Submarine Cables: Used for power transmission between islands and mainlands or across national borders, submarine cables can withstand harsh marine environments, ensuring a stable supply of electrical energy.

Direct Current Transmission: For long-distance or submarine power transmission, direct current cables are favored due to their lower transmission losses. They are commonly used to interconnect grids of different countries or to supply power to remote areas.

Superconducting Cables: At extremely low temperatures, superconducting cables can transmit electricity without loss. Although currently costly and requiring complex cooling systems, they represent an important direction for future power transmission technologies.

Flexible Transmission Systems: Utilizing special flexible cables, these systems can rapidly deploy power supply in scenarios requiring frequent movement or temporary power, such as large-scale events, construction sites, or emergency rescues.

Smart Grids: With the development of smart grids, wires, and cables not only transmit electrical energy but also carry data transmission functions, enabling real-time monitoring and management of the grid, thereby enhancing its reliability and efficiency.

The design and manufacture of wires and cables must adhere to stringent standards and specifications to ensure their performance and safety under various environmental conditions. With advancements in materials science and technology, future wires and cables will become more efficient, environmentally friendly, and intelligent.