Cable chamber state monitoring system based on time-frequency analysis

The invention relates to the technical field of state monitoring, in particular to a cable chamber state monitoring system based on time-frequency analysis, which comprises a signal acquisition and decomposition module, an energy spectrum analysis module, a fault detection and positioning module and a fault probability estimation module. According to the invention, the discrete wavelet transform is adopted to perform multi-scale decomposition on the electrical signals in the cable chamber, so that tiny changes in the electrical signals can be identified more meticulously, a monitoring system can detect potential cable problems in an initial stage and prevent faults, and the drawn frequency band energy spectrogram enables energy distribution analysis to be visual and comprehensive. The fault detection accuracy is improved, the fault diagnosis time is remarkably shortened, the fault positioning accuracy is enhanced by combining the energy threshold setting of the time-frequency domain information, the fault dat