Fault prediction method based on heuristic search analysis in extra-high voltage direct current control and protection system

The invention discloses a fault prediction method based on heuristic search analysis in an extra-high voltage direct current control and protection system, and the method comprises the steps: 1, collecting the fault information of the extra-high voltage direct current control and protection system, and selecting fault events with higher indexes to form an initial fault set of an accident chain; 2, node fault information generated in the jth fault line is transmitted in the extra-high-voltage direct-current control and protection system, and a power flow value of each line is obtained; 3, according to the power flow value of each line, carrying out rebalance control on the regional power flow value of the extra-high voltage direct current system; 4, according to the coefficient, calculating a comprehensive index; 5, after the jth fault node, assigning j + 1 to j and returning to the step 2; and 6, recording and outputting related data of the whole accident chain. According to the method, the core alarm informa