A method for controlling an electrical transmission network including a plurality of DC high-voltage lines and at least three AC/DC converters identified by a respective index i. For each of the converters having index i, the method includes recovering the setpoint active power value Pdci applied thereto, and recovering instantaneous voltage value Vi and voltage angle value θi of the buses having index i and modifying the setpoint active power Pdci of each of the converters having index i by a value including a term ΔPdcsi as a function of a sum of deviations of voltage angles multiplied by contribution adjustment parameters.