Status quo and prospect of power system dynamic state estimation
Tianqi Liu · Dianli zidonghua shebei · 2004
The status quo and prospect of power system DSE(Dynamic State Estimation) are surveyedand some usual methods for DSE are compared briefly. The mathematical model of DSE based on EKF(Extended Kalman Filter) is described,and three kinds of improved algorithm are offered,which improves the self-adaptability,robusticity and veracity of EKF algorithm respectively. After analysis of traditional methods,including residual and sudden change detection,some new theories are introduced for bad data detection and identification. Some views on external network modeling are concluded,and concepts of several aspects in DSE study are suggested as reference.