基于模态法的静态电压稳定性研究

模态分析方法是一种用来分析静态电压稳定性的方法。它从电压稳定性的本质和机理出发,通过能识别系统电压稳定性的雅可比矩阵的特征值和特征向量,求出电压变化和无功功率变化模态向量二者之间的关系,来判断系统的静态电压稳定性。模态分析方法可以用于分析实际系统,它可以从整个系统的观点给出与电压稳定性有关的信息,并明确指出有潜在问题的区域。此外,该方法还能提供关于不稳定性机理的信息。算例分析表明,该方法是有效和可信的。

Static Voltage Stability Study Based on Modal Analysis

Modal analysis is used to analyze static voltage stability,according to voltage stability characteristics and mechanism and based on eigenvalues and eigenvector of Jacobian Matrix which is used to identify system voltage stability,the relationship between voltage variables and reactive power variables is derived and system static voltage stability can be determined.The modal analysis can be used in actual system analysis and providing voltage stability related information regarding the whole system,and areas with potential problem can be clearly defined.In addition,the modal analysis can also provide instability mechanism information.The calculation example shows the modal analysis is effective and reliable.