RAPID PREDICTION METHOD AND SYSTEM FOR COMMUTATION FAILURE IN HVDC BASED ON COMMUTATION FAILURE RISK FACTOR

Abstract

Disclosed are a rapid prediction method and system for a commutation failure in a high voltage direct current transmission system (HVDC) based on a commutation failure risk factor, belonging to the technical field of commutation failure prevention in the high voltage direct current transmission system. The method can rapidly predict whether the commutation failure occurs after a fault occurs in a line-commutated converter-HVDC (LCC-HVDC) system, thereby supporting the subsequent prevention of the commutation failure. During the implementation, the method defines a conventional commutation area and an advanced commutation area, and calculates a commutation failure risk factor by integrating the conventional commutation area and the advanced commutation area, thereby predicting the commutation failure. In the method, the present-instant information and the future-instant information of characteristic quantities are comprehensively considered during a prediction process, thereby improving the commutation failure prediction speed.

CPC Classifications