Application of Singular Value Sensitivity on Harmonic Resonance Analysis for Inverter-Based Power Systems

Harmonic resonance issues have been attracted more and more attention due to a large number of power electronic inverters being used in power systems. In this paper, in order to have a deep insight into resonances, the singular value sensitivities with respect to component parameters of the network and the control parameters of inverters are used for harmonic resonance analysis based on Singular Value Decomposition theory, which can investigate the influence of parameter variation on harmonic resonances. These parameters can be classified into two categories: 1) resonance-frequency dominant parameters, including capacitive and inductive component parameters in the network; and 2) resonance-amplitude dominant parameters, including resistive component and control system parameters. The simulation and calculation results of the case study verify the effectiveness of singular value sensitivities.