Patent ID: 8305777

Claim:
A control assembly for converter stations in a high-voltage direct-current transmission device, comprising: a rectifier drive unit for driving a converter station operative as a thyristor-based rectifier, said rectifier drive unit being connected to a first AC voltage system and having a trigger angle regulator for setting and regulating a trigger angle for the rectifier; an inverter drive unit for driving a further converter station operative as a thyristor-based inverter, said inverter drive unit being connected to a second AC voltage system and having a trigger angle regulator for setting and regulating a trigger angle for the inverter; direct-current lines connected between said thyristor-based rectifier converter station and said thyristor-based inverter converter station; a delay element connected between said rectifier drive unit and said inverter drive unit and configured to inject a predetermined delay time after enabling of said trigger angle regulator of said rectifier drive unit for regulating the trigger angle of said rectifier and said trigger angle regulator of said inverter drive unit for regulating the trigger angle of said inverter.