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- Title
IRFLMDNN: hybrid model for PMU data anomaly detection and re-filling with improved random forest and Levenberg Marquardt algorithm optimized dynamic neural network.
- Authors
Yu, Miao; Yang, Chenyu; Li, Weize; Du, Weijie; Li, Jinglin
- Abstract
Phasor Measurement Units (PMU) are capable to generate multi-dimensional time series data, which is one of the most important parts for monitoring power system operation. However, various internal and external factors frequently cause the system to generate anomalous data randomly, so we expect to clean and re-fill the raw PMU data with anomalies to provide support for further advanced applications such as situational awareness, early warning, and dispatch control of the system. Existing methods mostly use classical mathematics and traditional machine learning to analyze PMU data, which makes it difficult to identify the pattern changes of the data under multiple operating conditions in power systems. In this paper, we propose a hybrid model named IRFLMDNN, which consists of an improved CART random forest model and a dynamic neural network optimized by the Levenberg Marquardt algorithm for PMU data anomaly detection and adaptive data re-filling, respectively. Experimental results based on the IEEE 39-node 10-machine New England Power System show that the proposed method has accurate and robust anomaly detection and data refilling performance.
- Subjects
NEW England; MARQUARDT algorithm; ANOMALY detection (Computer security); RANDOM forest algorithms; PHASOR measurement; SITUATIONAL awareness; MACHINE performance
- Publication
Neural Computing & Applications, 2023, Vol 35, Issue 21, p15563
- ISSN
0941-0643
- Publication type
Article
- DOI
10.1007/s00521-023-08571-4