Hotspot Temperature Prediction of Relay Protection Equipment Based on a Physical-Model-Aided Data-Driven Method

Long Jin (), Zexin Zhou, Youjun Li, Zhiyang Zou and Weisen Zhao
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Long Jin: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Zexin Zhou: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
Youjun Li: State Grid Electric Power Research Institute, Nanjing 210003, China
Zhiyang Zou: State Grid Electric Power Research Institute, Nanjing 210003, China
Weisen Zhao: School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China

Energies, 2024, vol. 17, issue 4, 1-14

Abstract: Relay protection equipment (RPE) is a type of automation equipment aiming to protect power systems from further damage caused by local faults. It is thus important to ensure the normal operation of RPE. As the power density of electronic components continuously increases, the overheating problem of RPE cannot be neglected. Given the difficulties in implementing direct measurement and predicting development trends of RPE temperature, a novel hotspot temperature monitoring method for RPE was proposed, which is a data-driven method. The generative adversarial network, aided by a physical model, is used to address small samples. Afterwards, a stacked ensemble model established based on random forests was used to predict the hotspot temperature of the RPE. Experiment results show that the proposed method can effectively predict hotspot temperature of RPE with the predictive error lower than 2%. And comparative results demonstrate the superiority of the proposed method compared to other methods.

Keywords: relay protection equipment; hotspot temperature; generative adversarial network; stacked ensemble (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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