Cable overheating fault detection system based on insulating material decomposition gas component analysis

The invention discloses a cable overheating fault detection system based on insulating material decomposition gas component analysis. The cable overheating fault detection system comprises a decomposition component detection module, a characteristic parameter extraction module, a database, a data acquisition module and an overheating fault detection module. The decomposition component detection module is used for detecting the types and contents of decomposition gases of different types of insulating materials at different temperature rises, and the characteristic parameter extraction module is used for extracting characteristic parameters from the decomposition gases of various types of insulating materials; and the overheating fault detection module calls characteristic parameters of decomposition gas of a corresponding type of insulating material according to the type of the insulating material adopted by the target cable and the decomposition gas data, judges whether an overheating fault potential safety