Synchronous Condenser 'S Application And The Effect Of Loss Of Excitation On Hvdc Receiving End

Due to the lack of reactive power during failure, high voltage direct current (HVDC) receiving end is prone to commutation failure. Synchronous condenser can force excitation during short time and has flexible reactive power output, which can be used on HVDC receiving end. However, research on synchronous condenser and its loss of excitation is still scarce. This paper analyzes the mechanism of commutation failure on HVDC receiving end, establishes Ximeng-Taizhou HVDC transmission system including synchronous condenser and its excitation control system in PSCAD-EMTDC. In order to verify the reactive power support of synchronous condenser, electrical quantities during the AC system fault when receiving end with or without synchronous condenser are compared. The Impact of synchronous condenser loss of excitation on the stability of HVDC system is discussed under different voltage sag levels. This paper aims to provide theoretical basis for the further research of synchronous condenser.