论文标题
斯洛伐克电动传输网格中异常速率与地磁活动的相关性
Correlation of Anomaly Rates in the Slovak Electric Transmission Grid with Geomagnetic Activity
论文作者
论文摘要
电力分配网络中电流的诱导是地球导向的爆发事件的众所周知的效果。受到最新研究的启发，表明在欧洲中部纬度国家暴露于强烈的地磁电流后，功率电网异常的速率可能会增加，我们决定研究由斯洛伐克电力传输系统（SEP）管理的斯洛伐克电力分布网格的这种影响。我们获得了SEP Company技术人员在维护日志中记录的骚乱列表以及其日期和其他细节。 使用未经调整的数据，我们发现故障率的季节性变化出乎意料。我们表明，这是对气象条件的强烈依赖的结果。特别是，平均温度与异常速率显示最强的相关性，而在相关性方面的降水量仅弱一些。在抑制失败率系列中的气象依赖性之后，我们获得了一个新的与温度无关的数据集。使用此干净的数据集，我们发现与邻近活动的最小值相比，在地磁活动最大值时期的失败率上升。
The induction of electric currents in electric power distribution networks is a well-known effect of Earth-directed eruptive events. Inspired by recent studies showing that the rate of power-grid anomalies may increase after exposure to strong geomagnetically induced currents in mid-latitude countries in the middle of Europe, we decided to investigate such effects for Slovak electric-power distribution grid managed by the Slovak Electricity Transmission System (SEPS). We obtained a list of disturbances recorded in the maintenance logs by the SEPS company technicians with their dates and other details. Working with unadjusted data we found unexpectedly strong seasonal variations of failure rates. We show that this is a consequence of the strong dependence on meteorological conditions. In particular, mean temperature showed the strongest correlation with anomaly rate, while precipitation amount was just a little weaker in terms of the correlation. After the suppression of the meteorological dependence in the failure-rate series, we obtained a new temperature-independent dataset. Using this clean dataset we found an increase in failure rates in the periods of maxima of geomagnetic activity compared to the adjacent minima of activity.
