Resonance analysis of a wind power plant with modal approach

A detailed harmonic resonance analysis of power systems is more and more important due to the increasing number of power electronic devices. The topic is especially well-grounded in wind power plants that besides having several possible sources of harmonics have many inductive and capacitive elements. This combination forms a severe concern over harmonic resonance that composes a threat to the power quality and the function of wind power plants. This paper presents and applies the harmonic resonance mode analysis (HRMA) in a model of an off shore wind power plant with and without a passive filtering. The results of the harmonic resonance mode analysis are verified and compared with the results calculated with the frequency scan.