目前，电力系统主要采用电力系统稳定器(PSS)和FACTS阻尼控制器来抑制低频振荡，提高系统小扰动稳定性。

Currently, Power System Stabilizers (PSS) and FACTS damping controllers are widely used to suppress the low frequency oscillations and to improve small signal stability.

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传统的电力系统稳定器(PSS)采用本地机组信号，不能有效提高系统阻尼。

Conventional power system stabilizer (PSS) adopting local generator signals is not sufficiently effective to enhance the damping of the system.

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为了抑制电力系统因负阻尼而产生的低频振荡，提高电力系统稳定性，设计了一种组合电力系统稳定器gpss。

A combinational electric system stable machinery GPSS is designed to fight back low frequency oscillation and to improve electric system stability.

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