This paper discusses the influence of a dielectric-coated conductor on the simulation of lightning-induced voltages on a single-phase overhead line. A parametric study is performed considering different load conditions, different values of ground conductivity and different stroke locations. It is shown that for realistic properties of the insulating material the induced-voltage waveforms are only slightly modified compared to the bare conductor case, especially at observation points that are close to the lightning-incidence point. If both ends of the line are unmatched, an oscillatory behavior is observed on the resulting voltage waveforms. An increasing time delay is observed in successive peak values if the relative permittivity and the thickness of the insulating layer are increased, but the overall characteristics of the induced voltage waveforms are not modified. A statistical study indicates that neglecting the insulating layer can be considered a good approximation for estimating the peak values of lightning-induced voltages on a single-phase overhead line.

本文讨论了电介质涂层导体对单相架空线雷电感应电压仿真的影响。考虑不同的负载条件，不同的地面电导率值和不同的行程位置进行参数研究。结果表明，对于绝缘材料的实际特性，与裸导体相比，感应电压波形仅略有变化，特别是在靠近雷电入射点的观察点处。如果线路的两端不匹配，则在生成的电压波形上会观察到振荡行为。如果相对介电常数和绝缘层厚度增加，则在连续的峰值中会观察到时间延迟的增加，但是感应电压波形的总体特性没有改变。统计研究表明，忽略绝缘层可以被认为是估算单相架空线上雷电感应电压峰值的良好近似值。