Starting from a generation RB accident caused by voltage dip of frequency converters. Elaborating the importance and implementation of high voltage frequency converter’s low voltage ride through(LVRT). For a high voltage frequency converter
it’s save function is realized by changing vector control mode to make sure it not driping when voltage temporary dip. For a low voltage frequency converter
LVRT is realized by adding power supply or compensators. Providing a realizing method for LVRT in power plants.