Overhead cables generally refer to power lines and communication lines that are installed on supports such as power towers and poles. Buried cables, on the other hand, refer to cables that are buried underground. These two methods differ in their installation methods, resulting in different characteristics and applicable scenarios.

Overhead cables are simple and convenient to install, requiring no large-scale civil engineering work, making them more common in areas with ample land. They offer advantages such as lower installation and maintenance costs, and easier fault detection and repair. However, overhead cables are susceptible to weather conditions and external damage.

In contrast, underground cables are more complex and costly to install, requiring extensive civil engineering work. However, they are aesthetically pleasing, reliable, and pose no threat to the surrounding environment or personnel safety. Underground cables effectively prevent damage from external forces, are not affected by weather conditions, and are suitable for urban areas, residential areas, and other similar locations. Furthermore, underground cables can reduce electromagnetic radiation and minimize interference with the surrounding environment.

Furthermore, overhead cables are more prone to failure than buried cables. Overhead cables require regular inspections to ensure their proper functioning. Buried cables, being underground, present greater challenges in troubleshooting and repairing faults.

In summary, overhead cables and buried cables differ significantly in installation methods, operating environments, characteristics, and applicable scenarios. Choosing the appropriate cable transmission method requires consideration of specific environmental requirements and economic costs. Regardless of the method chosen, effective maintenance and management are essential to ensure the normal transmission and supply of electricity.