Establishment of Predicting Transient Voltages Induced on Electrical Installations in and near a Wind-Turbine-Generator Tower Struck by Lightning

为了用时域有限差分法(FDTD)分析雷击风电机组塔架内及附近设备上的暂态电压，提出了电晕放电模型和土壤电离模型等几种模型，并证明了它们的有效性。然后，将这些模型并入作者开发的FDTD-仿真程序中。用FDTD程序研究了雷击杆塔中雷击浪涌的产生机理，并提出了减小雷电感应电压峰值的对策。

For analyzing transient voltages induced on installations in and near a wind-turbine-generator tower struck by lightning with the finite-difference time-domain (FDTD) method, several models such as a corona-discharge model and a soil ionization model have been proposed, and their validities have been shown. Then, these models have been incorporated the FDTD-simulation program developed by the author. Mechanisms for generating lightning-induced surges in a lightning-struck tower have been investigated with the FDTD program, and a countermeasure to reduce thelightning- induced-voltage peaks has been proposed.