Studies of the effect of operating condition variation on power system electromechanic oscillation modes

Abstract

采用特征值灵敏度分析的方法,确定多机电力系统在720个运行条件下的机电振荡模式。在此基础上,定量分析了振荡模式随运行条件的变化特性,从而对基于概率灵敏度方法确定的机电振荡模式进行了验证。所述分析在一8机系统的算例上进行。 With the eigenvalue sensitivity technique, the electromechanic oscillation modes under seven hundred and twenty operating conditions are determined in a multi-machine power system, based on which, the variation characteristics of oscillation modes with the variation of operating condition are studied. Therefore, results obtained from the probabilistic approach have been validated. All the studies are carried out on an eight-machine system.