Study of electric system harmonic response

Frequency scanning is the simplest and most commonly used technique for harmonic analysis. It determines the system harmonic response at a node from the calculation of its impedance matrix. This paper studies the determination of these impedance matrices and presents a classification of such matrices according to the linear and nonlinear loads connected in the system. Finally, the results are applied to analyze the harmonic response of electric power systems in the presence of capacitor banks or Steinmetz systems. The analytical results obtained in the capacitor bank example have been validated with experimental measurements.