Power grid line vulnerability analysis method based on HITS algorithm

The invention discloses a power grid line vulnerability analysis method based on an HITS algorithm, and the method comprises the steps: carrying out the N-1 scanning calculation of a whole network line of a power grid, and obtaining an initial root set matrix according to the power flow transfer data obtained through scanning; correcting the initial root set matrix based on the influence of the system power flow entropy and the hidden fault to obtain an extended root set matrix; taking the extended root set matrix as the input of an HITS algorithm model to carry out iterative calculation to obtain a convergent authority vector and a hub vector; eliminating virtual system power flow entropy points and hidden fault points from the converged authority vector and hub vector to obtain a final power grid line authority value and hub value; and calculating the vulnerability index value of the whole network line according to the power grid line authority value and the hub value, and obtaining the vulnerability of eac