电力系统低频振荡模态和参与因子的可视化方法

Visualization Method of Power System Low-Frequency Oscillation Mode Shape and Participation Factor

对电力系统振荡研究而言,振荡模态和参与因子是最重要的2个信息,但在实际大系统中快速、准确地把握这2个关键信息是难点。文章研究了采用各种可视化手段展现振荡模态和参与因子的方法,使系统调度员能很快获取系统振荡的关键信息,确定引起系统振荡的关键机组并定量评估其影响。并以美国东南部200台发电机系统为例验证了上述方法的有效性。

Oscillation mode shape and participation factor are the most important information for power system oscillation study. But in actual system it is difficult to grasp the two information quickly and accurately. The goal of this work is to take oscillation mode shape and participation factor data and display it with different manners, including changing the color, size and shape of the figure as well as two-dimensional and three-dimensional displays to meet the preference of various users to visualize information, thus power system dispatchers can acquire key information of system oscillation, determine the key unit that causes system oscillation and estimate its impacts quantitatively. The effectiveness of the proposed method is validated by two instance systems.