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Open AccessArticle

Power Transformer Operating State Prediction Method Based on an LSTM Network

Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Author to whom correspondence should be addressed.
Energies 2018, 11(4), 914; https://doi.org/10.3390/en11040914
Received: 30 March 2018 / Revised: 10 April 2018 / Accepted: 11 April 2018 / Published: 12 April 2018
(This article belongs to the Collection Smart Grid)
The state of transformer equipment is usually manifested through a variety of information. The characteristic information will change with different types of equipment defects/faults, location, severity, and other factors. For transformer operating state prediction and fault warning, the key influencing factors of the transformer panorama information are analyzed. The degree of relative deterioration is used to characterize the deterioration of the transformer state. The membership relationship between the relative deterioration degree of each indicator and the transformer state is obtained through fuzzy processing. Through the long short-term memory (LSTM) network, the evolution of the transformer status is extracted, and a data-driven state prediction model is constructed to realize preliminary warning of a potential fault of the equipment. Through the LSTM network, the quantitative index and qualitative index are organically combined in order to perceive the corresponding relationship between the characteristic parameters and the operating state of the transformer. The results of different time-scale prediction cases show that the proposed method can effectively predict the operation status of power transformers and accurately reflect their status. View Full-Text
Keywords: power transformer; state prediction; data-driven method; long short-term memory network; state panoramic information power transformer; state prediction; data-driven method; long short-term memory network; state panoramic information
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MDPI and ACS Style

Song, H.; Dai, J.; Luo, L.; Sheng, G.; Jiang, X. Power Transformer Operating State Prediction Method Based on an LSTM Network. Energies 2018, 11, 914.

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