Self-adaptive current control method for cascading failure of multi-infeed direct-current power transmission system

The invention relates to the technical field of power system protection and control, in particular to a self-adaptive current control method for cascading failures of a multi-infeed direct-current power transmission system. Calculating direct current for avoiding successive commutation failure of adjacent direct-current power transmission systems, direct current for avoiding subsequent commutation failure of a target direct-current power transmission system and direct current for avoiding overvoltage of a rectification station of the target direct-current power transmission system, and determining a direct-current control reference value of an inversion station of the target direct-current power transmission system according to the three direct currents; setting the determined direct current control reference value as an inverter station direct current instruction value of the target direct current power transmission system, and implementing control; according to the method, the successive commutation failure