Anti-oscillating self-adaptive restraining system of subsynchronous oscillation of large-size generator set

The invention provides an anti-oscillating self-adaptive restraining system of subsynchronous oscillation of a large-size generator set. The anti-oscillating self-adaptive restraining system of the subsynchronous oscillation of the large-size generator set comprises a signal measurement control system and a static var compensator system, wherein the signal measurement control system is used for enabling measured torsional mode components of the large-size generator set to be through the processing of measurement, inverse amplification, lowpass filtering and self-adaptive control parameter generation in sequence to obtain a needed control signal and enabling the control signal to be input into the static var compensator system, the static var compensator system is used for controlling a triggering angle according to the control signal generated by the signal measurement control system so as to adjust equivalent admittance of the static var compensator system, then reactive power output by the static var compensator system is changed in a self-adaptive mode, corresponding damping torque is generated, and accordingly self-adaptive restraining of the subsynchronous oscillation of the large-size generator set is achieved. The anti-oscillating self-adaptive restraining system of the subsynchronous oscillation of the large-size generator set is capable of better restraining the occurrence of the subsynchronous oscillation of the large-size generator set.