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An Online Dynamic Security Assessment Scheme Using Phasor Measurements and Decision Trees

机译：使用相量测度和决策树的在线动态安全评估方案

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摘要

This paper describes an online dynamic security assessment scheme for large-scale interconnected power systems using phasor measurements and decision trees. The scheme builds and periodically updates decision trees offline to decide critical attributes as security indicators. Decision trees provide online security assessment and preventive control guidelines based on real-time measurements of the indicators from phasor measurement units. The scheme uses a new classification method involving each whole path of a decision tree instead of only classification results at terminal nodes to provide more reliable security assessment results for changes in system conditions. The approaches developed are tested on a 2100-bus, 2600-line, 240-generator operational model of the Entergy system. The test results demonstrate that the proposed scheme is able to identify key security indicators and give reliable and accurate online dynamic security predictions.
机译：本文描述了一种使用相量测量和决策树的大型互联电力系统在线动态安全评估方案。该方案离线构建并定期更新决策树，以将关键属性确定为安全指标。决策树基于对相量测量单元指标的实时测量，提供在线安全评估和预防控制准则。该方案使用一种新的分类方法，该方法涉及决策树的每个完整路径，而不仅仅是终端节点的分类结果，以便为系统条件的变化提供更可靠的安全评估结果。在Entergy系统的2100总线，2600线，240发电机运行模型上测试了开发的方法。测试结果表明，该方案能够识别关键安全指标，并给出可靠，准确的在线动态安全预测。

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