Transient Voltage Instability Mechanism of New Energy Station Based on Repeated LVRT

In recent years, new type of voltage fluctuation problem often occurs in the large-scale wind power system, and the traditional suppression strategy can not be applied, there is an urgent need to propose an effective strategy. This paper firstly explains the new transient voltage destabilization mechanism; then verifies the related discriminative methods; finally, the effects of active output and crossing threshold on transient voltage are investigated and verified by simulation.