HARMONIC RESONANCE POINT SEARCH METHOD IN POWER SYSTEM, AND DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a harmonic resonance point search method in a power system capable of relatively easily acquiring information effective for knowing harmonic characteristics of the power system by specifically introducing eigenvalue analysis into harmonic analysis of the power system.SOLUTION: The harmonic resonance point search method in the power system for identifying a resonance point in a specific resonant frequency with a node and a branch which are extracted by eigenvalue analysis includes the steps of: guiding a maximum eigenvalue from an impedance matrix in an examination target node of the power system; guiding frequency characteristics of the maximum eigenvalue and the specific resonant frequency in which the maximum eigenvalue becomes relatively maximum; guiding a contribution rate in the specific resonant frequency from the frequency characteristics of the maximum eigenvalue and extracting a node in which the contribution rate becomes relatively maximum; and guiding eigenvalue sensitivity of a branch in the specific resonant frequency of the extracted node and extracting a branch in which the eigenvalue sensitivity becomes relatively maximum.