Method, device and equipment for improving transient stability of direct current power transmission system and medium

Abstract

The application discloses a kind of direct current transmission system transient stability promotion method, device, equipment and medium, it is related to high voltage direct current transmission field, first according to the trigger lead angle and commutation overlap angle when LCC inverter is connected to grid, determine arc extinguishing angle, then based on the direct current value of inverter, equivalent commutation reactance and commutation overlap angle, the current amplitude of inverter is determined, and the power factor angle of inverter output port is determined by the current amplitude of alternating side, alternating side voltage effective value, equivalent commutation reactance, arc extinguishing angle and direct current value, finally based on direct current value, the capacitance value of inverter corresponding grid-connected compensation capacitor is determined by the direct current voltage value and power factor angle of inverter, to judge whether the direct current transmission system where inverter is located is stable according to capacitance value, i.e. for inverter direct current voltage power, the stability of inverter alternating side voltage is analyzed, the stability of entire direct current transmission system can be accurately detected, and the reliability of direct current transmission system is improved.

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