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arXiv 1910.08696eess.SYcs.SYeess.SP
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用于低可观测性电力系统异常检测的PMU数据维度增量

Dimensionality Increment of PMU Data for Anomaly Detection in Low Observability Power Systems

Xin Shi, Robert Qiu

摘要:

异常检测是电力系统的一项重要任务。为了更好地利用从低可观性电力系统采集的相量测量单元(PMU)数据进行异常检测,提出了一种数据维数增量算法。首先,一个低维的时空数据矩阵,制定通过使用同步相量测量收集从有限数量的PMU在电力系统。然后,提出了一种基于随机张量理论(RTT)的数据维增量异常检测算法。该算法可以提高基于随机矩阵理论(RMT)和基于机器学习(ML)的异常检测方法的灵敏度,并且能够加快基于ML的异常检测方法中模型训练的收敛速度。IEEE 118节点测试系统的算例验证了该算法的有效性。

英文摘要:

Anomaly detection is an important task in power systems. To make better use of the phasor measurement unit (PMU) data collected from a low observability power system for anomaly detection, a data dimensionality increment algorithm is proposed in this paper. First, a low-dimensional spatio-temporal data matrix is formulated by using the synchrophasor measurements collected from a limited number of PMUs in a power system. Then, a data dimensionality increment algorithm based on random tensor theory (RTT) is proposed for anomaly detection. The proposed algorithm can help improve the sensitivity of random matrix theory (RMT) based and machine learning (ML) based anomaly detection approaches, and it is able to accelerate the convergence rate of model training in the ML based anomaly detection approach. Case studies on the IEEE 118-bus test system validate the effectiveness of the proposed algorithm.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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