Sensitivity analysis of the wind farm high frequency resonance under transmission cable resistance variation

The High Frequency Resonance (HFR) of the Doubly Fed Induction Generator (DFIG)-based wind farm is possible to occur when the wind farm is connected to the long-distance transmission cable. The cable resistance may always be in variation due to temperature and humidity changing, insulation condition variation and etc. In this paper, it is found out that the amplitude of the HFR is influenced by the cable resistance, thus it is interesting to investigate the HFR performance under various cable resistance. The impedance modeling of the DFIG-based wind farm and the long-distance transmission cable are established first, then the HFR will be analyzed under the variation of the transmission cable resistance using the Nyquist based method. Time domain simulation results based on MATLAB/Simulink are provided to validate the analysis.