Broadband oscillation disturbance source grading positioning method based on compressed sensing and ISTA

The invention relates to the technical field of oscillation disturbance source grading and positioning, in particular to a broadband oscillation disturbance source grading and positioning method based on compressed sensing and ISTA, which comprises the following steps: collecting the power of a power grid generator of a system, and storing the power of the generator as a time sequence; extracting a typical oscillation characteristic sub-sequence based on the time sequence to detect the state of the system, and obtaining a criterion result; sub-sampling the time sequence based on a compressed sensing technology to obtain a compressed signal; inputting the compression signal and the criterion result into a disturbance area positioning network, and outputting a disturbance area unit number; inputting the disturbance area unit number into an ISTA recovery network for recovery to obtain an oscillation recovery signal; and inputting the oscillation recovery signal into the disturbance source positioning network for