Low frequency oscillation is harmful to powersystem security and stability, and as one of solutions powersystemstabilizer (PSS) can effectively restrain such a phenomena.
低频振荡是一种不利于电力系统安全和稳定运行的现象，而电力系统稳定器(PSS)可以有效抑制低频振荡。
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To solve this problem at present more than 100 generating sets were equipped with powersystemstabilizer (PSS) after on site testing, setup and commissioning.