In order to get the distribution characteristics of lightning transient ground potential of 100 MW wind farm in the Chaoyang Mountain,Jinzhai County,the characteristics of lightning parameters within 5 km of the wind ...In order to get the distribution characteristics of lightning transient ground potential of 100 MW wind farm in the Chaoyang Mountain,Jinzhai County,the characteristics of lightning parameters within 5 km of the wind farm were analyzed based on the lightning monitoring data from 2006 to 2020 provided by Anhui Meteorological Bureau.According to the on-site geological investigation,a double-ring ground network model was established to simulate the three-dimensional transient contact voltage and step voltage distribution of a typical wind fan was obtained through simulation.The results show that the average lightning current amplitude around the wind farm was 44 kA,instead of 10 kA in the current traditional simulation research,which is used as the excitation source for the subsequent simulation of lightning transient ground potential.The peak value of lightning transient contact voltage of the single wind turbine is 2158.35 V,and the peak value of lightning transient step voltage is 441.75 V.The simulation results can provide certain reference for subsequent lightning risk assessment,lightning scheme design and ground grid construction of wind farms.展开更多
文摘In order to get the distribution characteristics of lightning transient ground potential of 100 MW wind farm in the Chaoyang Mountain,Jinzhai County,the characteristics of lightning parameters within 5 km of the wind farm were analyzed based on the lightning monitoring data from 2006 to 2020 provided by Anhui Meteorological Bureau.According to the on-site geological investigation,a double-ring ground network model was established to simulate the three-dimensional transient contact voltage and step voltage distribution of a typical wind fan was obtained through simulation.The results show that the average lightning current amplitude around the wind farm was 44 kA,instead of 10 kA in the current traditional simulation research,which is used as the excitation source for the subsequent simulation of lightning transient ground potential.The peak value of lightning transient contact voltage of the single wind turbine is 2158.35 V,and the peak value of lightning transient step voltage is 441.75 V.The simulation results can provide certain reference for subsequent lightning risk assessment,lightning scheme design and ground grid construction of wind farms.
