Cable fault location systems are classified into online and offline types. Online systems can monitor cable operating status and locate faults in real time, while offline systems require manual inspection and offline operation.
Online cable fault location systems can be further divided into various forms, including partial discharge monitoring, AC and RF current monitoring, impedance testing, and signal injection location.
Offline cable fault location systems primarily utilize the shock waves generated by lightning to locate faults through methods such as cable characteristic impedance testing and time-domain inversion.
