中国电机工程学报2011，Vol.31Issue(16)：32-39,8.
面向同步相量轨迹簇规则的电力系统暂态稳定实时评估
Rule-based Combined Algorithm for Power System Real-time Transient Stability Assessment Using Synchronized Phasor Trajectory Clusters
摘要
Abstract
With synchronized phasor measurement, a real-time assessment algorithm for transient stability based on phasor trajectory clusters rules is presented in this paper. A novel combined algorithm, which was composed of K-mean and fuzzy C-mean methods, was applied on line to recognize trajectories' coherency state and deviation features of clusters' appearance within several cycles after disturbance. A standard classification and regression tree (CART) method was proposed to abstract knowledge rules from the evolution of pre-classifled feature index. Such a group of index of real-time trajectory clusters' position, rather than trajectories themselves (amplitude for instance), was utilized to assess transient stability and disturbance severity level. Detailed analysis shows that the proposed algorithm can predict transient stability accurately with regard to the future 4 s by using data within 8-20 cycles without dependence on power system model or specific nature of the disturbance. Significant information such as the stability state, critical machine, severity level are detected at the same time. In addition the whole process mainly focuses on generalized response pattern recognition of power system, and therefore avoids having to directly determine the controlling unstable mode and different rule sets. New England benchmark case verifies the validity of the method.关键词
轨迹簇/面向规则/暂态稳定/实时评估/同调系数/同步相量测量分类
信息技术与安全科学引用本文复制引用
刘友波,刘俊勇,Gareth Taylor,刘利民,李俊..面向同步相量轨迹簇规则的电力系统暂态稳定实时评估[J].中国电机工程学报,2011,31(16):32-39,8.基金项目
国家自然科学基金项目(509777059) （509777059）
教育部国家建设高水平大学公派研究生项目([2009]3012). （[2009]3012）
