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Power system security assessment for multiple contingencies using multiway decision tree

机译：使用多路决策树的多突发事件电力系统安全评估

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摘要

The search for effective ways to promote the secure operation of power systems and to increase its understanding by operators has encouraged continuous research for new techniques and methods that can help in this task. In this paper, it is proposed an approach to assess power system operation security for multiple contingencies using a multiway decision tree (MDT). The MDT differs from other decision tree techniques for establishing, in the training step, one value of the categorical attributes by branch. This approach proposes the use of topologies (contingencies) as categorical attributes. In this way, it improves interpretability regarding the power system operational state, as the operator can see clearly the critical variables for each topology, such that the MDT rules can be used in aiding the decision-making. This proposal was used for security assessment of the Northern part of the Brazilian Interconnected Power System (BIPS), and it was tested with real data from one day operation, demonstrating good performance, with a set of simple and clear rules. It was also performed a comparison of the obtained results with other techniques based on DT and it turned out that MDT has resulted in a simpler procedure for power system security classification with good accuracy. (C) 2017 Elsevier B.V. All rights reserved.
机译：寻找有效的方法来促进电力系统的安全运行并增加操作员对其的理解，这鼓励了对有助于该任务的新技术和方法的不断研究。在本文中，提出了一种使用多路决策树（MDT）评估多种突发事件的电力系统运行安全性的方法。 MDT与其他决策树技术不同，该技术用于在训练步骤中按分支建立分类属性的一个值。此方法建议使用拓扑（意外情况）作为分类属性。这样，由于操作员可以清楚地看到每种拓扑的关键变量，因此可以提高有关电力系统运行状态的可解释性，从而可以使用MDT规则来辅助决策。该建议用于巴西互联电源系统（BIPS）北部的安全评估，并通过一天运行的真实数据进行了测试，证明了其良好的性能，并具有一组简单明了的规则。还对获得的结果与其他基于DT的技术进行了比较，结果发现MDT导致了用于电力系统安全性分类的更简单过程，具有良好的准确性。 （C）2017 Elsevier B.V.保留所有权利。

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