电力系统小干扰电压稳定极限的一种实用算法

A Practical Method of Determining Power System Smalldisturbance Voltage Stability Limits

首先建立了一种求解电力系统小干扰电压稳定极限的数学模型，该模型考虑了从给定运行情况到极限运行情况的负荷增加过程中，发电机的有功变化、功率限制及有载调压变压器的分接头调整等因素。然后提出了该问题的实用简化求解方法，并给出了西北４５机２２０节点系统的计算结果，表明所提算法既比现有方法更加符合实际情况，又具有较快的求解速度。

A mathematical model for determining power system smalldisturbance voltage stability limits is first presented in this paper, which takes into account all related factors such as OLTC action, generation variation and limitations. Then, a practical solution method based on predictorcorrector is proposed. Calculation results of 45generator 220bus Northwest system show that the proposed method is more reasonable and faster than the existing ones.