【摘要】 基于同步电机阻尼绕组对电力系统动态稳定性的重要影响 ,建立了考虑阻尼绕组作用的单机无穷大系统线性化c1～c12 模型 ,对该模型与Phillips Heffronk1～k6模型在自动励磁调节削弱机电模式阻尼的机理、系统动态稳定性的计算及电力系统稳定器的设计 3方面的差别进行了分析和对比 ,经比较认为 :同步电机迟相运行时 ,自动调节励磁将削弱机电模式的阻尼 ,此性质与有功负载的大小无关 ;c1～c12 模型适用于同步电机各种工况下的动态稳定分析 ;k1～k6模型不宜用于进相和调相工况下的动态稳定计算 ,用于迟相工况时结果偏于保守 ,但有参考价值 ;采用 2种模型设计的电力系统稳定器均可有效地抑制低频振荡更多还原

【Abstract】 Damper windings of synchronous machines have important effect on the dynamic performance of power systems. Based on the one machine infinite bus system in this paper, linearized model ( c 1～c 12 model) have been established with the effect of damper windings considered. Analysis and comparison with the conventional Phillips Heffron k 1～k 6 model were carried out from three aspects: the effect of the AVR on the mechanic electrical mode, the system dynamic stability calculation and the PSS design. The arrived conclusion includes that the AVR always attenuates the damping of the mechanic electrical mode regardless of the synchronous machines electricpowerloadunder thelagphase operational condition; c 1～c 12 model can be used for dynamic stability computation under any system operational conditions; but the k 1 k 6 model will provides a conservative result for reference under the lag phase system conditions, and are not proper to be used under other system conditions; both types of the models can be used for PSS design to increase system damping.更多还原