CONTROL AUTHORITY SWITCHING SYSTEM AND METHOD FOR PARALLEL MULTI-TERMINAL HIGH-VOLTAGE DIRECT CURRENT CONVERTER STATION

Disclosed are a control authority switching system and method for a parallel multi-terminal high-voltage direct current converter station. The method comprises: when a first high-voltage direct current converter station needs to switch the control authority, it is determined whether a permission condition of a control authority switching request is met, wherein the permission condition of the control authority switching request at least comprises: the communication status between the first high-voltage direct current converter station and other high-voltage direct current converter station at least one terminal is normal; if the permission condition of the control authority switching request is met, the first high-voltage direct current converter station communicates with specific high-voltage direct current converter stations at other terminals to achieve the control authority switching, the specific high-voltage direct current converter station referring to a high-voltage direct current converter station ha