基于特征结构分析法的静态电压稳定算法

基于电力系统快速解耦潮流方程雅可比矩阵的特征结构分析法研究了与系统静态电压稳定性密切相关的雅可比矩阵最小模特征根和与之相对应的特征向量.以最小模特征根作为系统静态电压裕度指标,以最小模特征根对应的右特征根向量作为节点电压灵敏度指标.通过IEEE39节点系统在两种运行状态下,给出了系统最有可能发生电压不稳定的节点,同时也验证了该方法的准确性和有效性.

Static Voltage Stability Algorithm Based on Eigenvalue Structure Analysis Method

Based on the eigenvalue structure analysis method of fast decoupled load flow equation Jacobi matrix of the power system,the Jacobi matrix minimum modulus characteristic roots related to static voltage stability and the corresponding eigenvectors were studied.The minimum modulus characteristic roots were taken as static voltage margin indexes,and the corresponding right eigenvectors as node voltage sensitivity indexes.In two kinds of operation condition,the nodes where voltage instability occurred most likely in the system were obtained by IEEE-39 bus system.Meanwhile,the method was proved accurate and effective.