This paper analyzes the potential transferred between two independent grounding grids located 40 m apart, one of which, called the active grid, was injected with current of rocket-triggered lightning flashes. The transferred potentials in another grid, called the passive grid, and the transient response of the surge protective device (SPD) in the passive grid are evaluated. Observations results benefiting from six nearby triggered flashes, in which a total of 35 return strokes were involved, show that the peak transferred potential in the passive grid ranges from −1.1 to −28.5 kV with a mean of −10.7 kV. These voltages exhibit transient pulses, having a primary peak with a mean duration of 3 μs, followed by a sub-peak, whose amplitude is averagely 36.6% against the primary one. The average 10%–90% risetime is 0.74 μs and the average half-peak width is 1.6 μs. The energy consumed by SPD during transferred potentials is 2.0 J on average, much lower than that of the SPD equipped in nearby overhead power lines. The amplitude of initially injected lightning currents in the active grid is found to be an important determinant of the peak transferred potentials, the peak current flowing through the SPDs, and the energy consumed by the SPD.

中文翻译：

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独立接地网间电势转移过程中浪涌保护器的瞬态响应

本文分析了相距 40 m 的两个独立接地网之间的电位转移，其中一个称为有源电网，注入了火箭触发的闪电电流。评估另一个称为无源电网的电网中的转移电位，以及无源电网中浪涌保护装置 (SPD) 的瞬态响应。受益于附近 6 次触发闪光的观察结果，其中总共涉及 35 次回击，表明无源电网中的峰值转移电位范围为 -1.1 至 -28.5 kV，平均值为 -10.7 kV。这些电压表现出瞬态脉冲，具有平均持续时间为 3 μs 的主峰值，然后是次峰值，其幅度平均为初级峰值的 36.6%。平均 10%–90% 上升时间为 0。74 μs，平均半峰宽为 1.6 μs。SPD在转移电位过程中平均消耗的能量为2.0J，远低于附近架空电力线中配备的SPD。发现有源电网中初始注入雷电流的幅度是峰值转移电位、流经 SPD 的峰值电流以及 SPD 消耗的能量的重要决定因素。