High-capacity offshore converter station emergency power supply wiring system and control method thereof

The invention relates to the technical field of electric power engineering, in particular to a high-capacity offshore converter station emergency power supply wiring system and a control method thereof.The system comprises a high-voltage power supply module, a power center module and an emergency power supply module; the high-voltage power supply module comprises a high-voltage station external power supply and a high-voltage station internal power supply; each power center comprises two step-down transformers, and the high-voltage sides of the two step-down transformers are respectively connected to different power supplies in the high-voltage station; the emergency power supply module comprises at least two emergency diesel generators with different capacities. The high-voltage station external power supply is introduced, and the high-voltage sides of the two transformers of each power center are connected to different high-voltage station internal power supplies, so that the power supply requirement during