With the constant progression of urbanization, the importance of electricity supply systems is becoming increasingly evident. Underground cables are an essential mode of electricity transmission. They are gradually replacing traditional overhead cables, thus becoming an essential component of modern cities. Compared to overhead cables, underground cables not only improve the safety and stability of electrical transmission, but they also beautify the urban visual environment. This article explores in depth the definition of underground cables, their types, their structure, their installation methods, their advantages, their maintenance and detection, as well as future trends in their development.
