Harmonic State Estimation of Power Systems

This paper presents a general overview of harmonic state estimation of power systems, including the major issues such as harmonic state estimator, observability analysis and optimal measurement placement. Based on partial synchronized measurements at selected buses and lines, complete harmonic information throughout a power system is estimated. Harmonic state estimation provides an efficient tool to identify and correct harmonic distortion for a whole system. The results of the research currently undertaken at the University of Canterbury are expected to be applied to the NZ and Spain power systems.