Substation based dynamic state estimator - numerical experiment

This paper presents a distributed dynamic state estimation algorithm that operates on the substation level. The algorithm uses local GPS-synchronized and conventional non synchronized measurements in the substation of interest and can estimate the states of the local substation as well as the states at the other ends of the transmission lines at the neighboring substations. The estimation algorithm provides the true dynamic (transient) states of the system. As such it provides the basic infrastructure for high accuracy real time dynamic monitoring and control at speeds that are not presently available. Numerical experiments are presented in this paper for the purpose of evaluating the performance of the proposed algorithm. It is shown that the proposed algorithm is reliable and feasible for practical implementation.