Frequency dependence complete model is set up for describing the lightning transient behaviour of
the wind turbines (WTs).To get an appropriate wind turbine model, a high frequency models of surge arrester
protecting the boost transformer, transformer and ground electrode soil ionization are implemented. The
transient responses and Ground Potential Rise (GPR) can be obtained at different locations in the WTs and
connected grid in the time domain as well as in the frequency domain using Fast Fourier Transform (FFT). To
check the validity of the model, surge arresters protection levels at different locations, i.e. LV, MV and HV, are
compared with ABB manufacture data, also a comparison has been made between simple and frequency
dependence model of overall wind farm components using ATP/EMTP. This paper provides an accurate
simulation of wind farm components under transient condition. |
