Abstract: A method and a device for controlling grid configuration of a flexible direct current electric power transmission system, and a computer-readable storage medium are provided. The active power reference value is modified based on the frequency deviation of the alternating current grid. The reactive power reference value is modified based on the voltage deviation of the alternating current grid. The outputted active power and the outputted reactive power are controlled based on the active power reference value and the reactive power reference value, respectively. The grid voltage is further configured and controlled through power control, so that the system is capable of self-synchronization, frequency regulation and voltage regulation. In addition, the virtual synchronous machine technology is introduced into control of the reactive power, so that the system can provide inertia support for the grid voltage amplitude.

Abstract: Disclosed is grid-forming control method for an offshore wind turbine, including the following steps: obtaining a grid voltage and current at a grid connection point of a wind turbine, actual values of active power and reactive power of the wind turbine, and references of the active power, the reactive power and an voltage amplitude; calculating a phase reference of a grid-side converter of the wind turbine; calculating a reference of a modulating voltage at the grid-side converter of the wind turbine in a dq rotating coordinate system; and calculating a reference of a modulating voltage at the grid-side converter in an abc static coordinate system according to the phase reference of the grid-side converter of the wind turbine and the reference of the modulating voltage in the dq rotating coordinate system.