Abstract

An analysis is performed of the effect geomagnetic pulsations with frequencies of several millihertz (the Pi3/Pc5 range) have on the magnitude of geomagnetically induced currents (GICs) in the Severnyi Tranzit Electric Power Transmission Line (EPL) located at auroral latitudes. It is shown the characteristics of GICs depend not only on the amplitude of geomagnetic pulsations, but on their polarization, frequency, and spatial scale as well. The correlation between GICs and large-scale geomagnetic disturbances is higher than between GICs and small-scale disturbances. An integral (frequency-averaged) parameter is proposed that determines the correlation between the spectral power of GICs and geomagnetic pulsations. The parameter is tested on a quasi-meridional EPL.

中文翻译：

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Pc5 / Pi3地磁脉动和地磁感应电流

摘要

对在极光纬度的Severnyi Tranzit电力传输线（EPL）中具有几毫赫兹频率（Pi3 / Pc5范围）的地磁脉动对地磁感应电流（GIC）的大小进行了分析。结果表明，GIC的特性不仅取决于地磁脉动的幅度，还取决于其极化，频率和空间尺度。GIC与大规模地磁干扰之间的相关性高于GIC与小规模干扰之间的相关性。提出了一个积分（频率平均）参数，该参数确定了GIC的频谱功率与地磁脉动之间的相关性。该参数在准子午线EPL上测试。