Low-frequency band suppression enhanced anti-reverse adjustment power system stabilizer

The invention discloses a low-frequency band suppression enhanced anti-reverse adjustment power system stabilizer. According to an universally-adopted PSS2B type power system stabilizer at present, a leading link higher than two orders is required to be adopted, so that active power direct current blocking signal phase compensation requirements can be satisfied, and as a result, high-frequency band gain is increased fast, and total gain allowed to be set by the power system stabilizer (PSS) is limited, and low-frequency band gain is limited, and the low-frequency band suppression ability of the power system stabilizer is decreased. According to the low-frequency band suppression enhanced anti-reverse adjustment power system stabilizer of the invention, generator rotation speed signals omega which are subjected to a blocking link and parallel proportional differential (PD) correction and active power signals Pe which are subjected to a blocking link and are gained by adopting a gain coefficient Ks3 are superposed, so that equivalent synthesis mechanical power can be obtained; actual active power fluctuation signals gained by adopting a gain coefficient KS1 can satisfy phase compensation requirements through adopting an one-order leading link and an one-order lagging link; and therefore, the total gain allowed to be set by the power system stabilizer can be increased, and the improvement of the low-frequency band vibration suppression ability of the power system stabilizer can be realized.