电力系统稳定器对轴系扭振影响的研究

The Effects of Power System Stabilizers on the Shaft Torsional Vibration of Large Turboalternators

提出了一种新的分析电力系统稳定器(PSS)对汽轮发电机组轴系扭振影响的解析分析方法,并将这种方法应用于三种典型PSS,分析和比较了它们对轴系扭振的影响.

A novel analytical approach to the effects of the Power System Stabilizer (PSS) on the shaft torsional vibration of a large turboalternator is proposed. The contributions of the speed-based type,the accelerating-power-based type or the speed-and-power-based type PSS to the modal damping and modal synchronizing torques are investigated respectively under various operating conditions. Results obtained show that the speed-based stabilizers contribute the largest negative damping torques to the shaft torsional modes while the power-based stabilizers contribute almost no damping torques to these modes.