Causes and prevention measures of insulation aging in power cables

The insulation layer of power cables is the core component for ensuring safe power transmission. The insulation material will gradually age under various factors, and the aggravation of aging will increase the probability of leakage and breakdown. Proper prevention and control can delay the aging process. The factors causing insulation aging can be divided into two categories: internal and external. The main internal factors are long-term overload operation, increased current causing the cabl......

Power cables, underground energy channels for urban power grids

Power cables are the fundamental carriers used for transmitting and distributing electrical energy in the power system, often referred to as the underground arteries of urban power grids. Compared to overhead power lines, power cables laid underground or in tunnels are less affected by external environmental factors such as wind, rain, and lightning strikes, occupying less ground space. They are widely used in densely populated urban areas. A complete power cable generally consists of several......

Daily operation and maintenance of power cables, extending the service life of cables

Once power cables are put into use, they will remain continuously charged for a long time, and the insulation material will gradually age over time. Standardized daily operation and maintenance can timely detect hidden dangers, reduce the possibility of power outages, and maintain continuous power supply to the line. Daily inspections are divided into two parts: visual inspection and performance testing. The focus of the appearance inspection is to check whether the outer sheath of the cable ......