Multi-source fault detection and identification method for direct-current power supply cable of submarine observation network

The invention discloses a multi-source fault detection and identification method for a direct-current power supply cable of a submarine observational network. According to the multi-source fault detection and identification method for the direct-current power supply cable, the purpose of detecting and identifying various faults and multi-point faults of the direct-current power supply cable can be achieved; comprising the steps of submarine observation network cable multi-source fault detection loop connection, direct-current power supply cable detection and data acquisition, long-distance power transmission cable fault model establishment, multi-source fault detection result judgment and the like. The method has the beneficial effects that various faults and multi-point faults of the direct-current power supply cable can be accurately, safely and efficiently detected and identified in real time, scientific and reliable data are provided for maintenance and overhaul of a submarine observation network energy s