Power grid fault ride-through control device and method for flexible direct current power transmission system

The invention discloses a power grid fault ride-through control device and method for a flexible direct-current power transmission system, and relates to the technical field of conductive part connecting devices. The invention discloses a power grid fault ride-through control device of a flexible direct current power transmission system. A two-section line comprises a first wire harness and a second wire harness, wherein one ends of the first wire harness and the second wire harness are exposed; according to the invention, a pair of first wire cores and a pair of second wire cores can be effectively separated by arranging the opening block and the separating box, and the distance between the through holes symmetrically formed in the opening block is relatively far, so that compared with a conical wire separating head in the prior art, the pair of first wire cores and the pair of second wire cores can be well separated; therefore, short circuit caused by contact due to the fact that the pair of first wire core