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Statistical trend tests for resilience of power systems

机译：电力系统弹性统计趋势测试

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Through applications of relevant trend tests in the context of resilience analysis, this study conducts an empirical evaluation on the resilience of the U.S. power grid based on the database of the Electric Disturbance Events. To assess trends in systems resilience, we look into three key components associated with each black-out and recovery of power systems, i.e., the time between disruptions, the performance loss of each disruption and the time needed for recovery. We present a combined measure that takes into account all the three components. A modified Lewis Robinson test is then developed for trend detection in this combined measure. To support the trend analysis of this combined measure, we further perform trend test for the performance loss and the recovery time. It is found that, among various North American Electric Reliability Corporation (NERC) regions of the U.S. power grid, the resilience in the Northeast Power Coordinating Council (NPCC) region has become better. Empirical evidence from the government financial support is used to substantiate these statistical findings.
机译：通过在弹性分析中应用相关趋势测试，本研究基于电力骚扰事件数据库对美国电网的弹性进行了实证评估。为了评估系统弹性的趋势，我们研究了与电力系统每次停电和恢复相关的三个关键组件，即中断之间的时间，每次中断的性能损失以及恢复所需的时间。我们提出了一种综合措施，其中考虑了所有三个组成部分。然后，开发了一种改良的Lewis Robinson检验，用于通过这种组合方式进行趋势检测。为了支持此组合措施的趋势分析，我们进一步对性能损失和恢复时间进行了趋势测试。已经发现，在美国电网的各个北美电力可靠性公司（NERC）地区中，东北电力协调委员会（NPCC）地区的弹性已变得更好。来自政府财政支持的经验证据被用来证实这些统计结果。

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