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1,697 results on '"Sun, Jinhua"'

204. Memories of Professor Toshisuke Hirano

Author

Dobashi, Ritsu, Suzuki, Takeshi, Suzuki, Masataro, Gao, Lijing, Kuwana, Kazunori, Chow, Wan-Ki, Dlugogorski, Bogdan, van Hees, Patrick, Sun, Jinhua, Harada, Kazunori, editor, Matsuyama, Ken, editor, Himoto, Keisuke, editor, Nakamura, Yuji, editor, and Wakatsuki, Kaoru, editor

Published
2017
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221. A Comparative Study of AutoML Approaches for Short-Term Electric Load Forecasting

Author

Meng Zhaorui, Xie Xiaozhu, Xie Yanqi, and Sun Jinhua

Subjects
automated machine learning, load forecasting, deep learning, Environmental sciences, GE1-350
Abstract

Deep learning is increasingly used in short-term load forecasting. However, deep learning models are difficult to train, and adjusting training hyper-parameters takes time and effort. Automated machine learning (AutoML) can reduce human participation in machine learning process and improve the efficiency of modelling while ensuring the accuracy of prediction. In this paper, we compare the usage of three AutoML approaches in short-term load forecasting. The experiments on a real-world dataset show that the predictive performance of AutoGluon outperforms that of AutoPytorch and Auto-Keras, according to three performance metrics: MAE, RMSE and MAPE. AutoPytorch and Auto-Keras have similar performance and are not easy to compare.

Published
2022
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231. Microsupercapacitors Working at 250 °C

Author

Mishukova, Viktoriia, primary, Su, Yingchun, additional, Chen, Shiqian, additional, Boulanger, Nicolas, additional, Xu, Bo, additional, Thangavelu, Hari Hara Sudhan, additional, Sun, Jinhua, additional, Xia, Wei, additional, Talyzin, Alexandr, additional, and Li, Jiantong, additional

Published
2023
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237. Investigation of gas diffusion behavior and detection of 86 Ah LiFePO4batteries in energy storage systems during thermal runaway

Author

Jia, Zhuangzhuang, Wang, Shuping, Qin, Peng, Li, Changhao, Jin, Kaiqiang, Sun, Jinhua, and Wang, Qingsong

Abstract

With the widespread use of lithium iron phosphate (LFP) batteries in electrochemical energy storage (EES) systems, gas diffusion and early detection during thermal runaway (TR) are receiving increasing attention. In this work, the gas diffusion behavior and detection of a single 86 Ah LFP battery at two levels of the EES system are systematically investigated by a combination of experiment and simulation during TR. The TR experiment of a single 86 Ah LFP battery is carried out for the battery pack and it is evident that H2diffusion is faster and earlier response than CO. The maximum concentrations of H2and CO outside the battery pack are 1493 and 802 ppm, respectively. The gas diffusion behavior inside the battery energy storage container is simulated, and it is found that the maximum concentrations of H2and CO are 618 and 412 ppm. Within 10 s after the safety venting, the gas diffusion behavior and detection are not affected by ventilation. However, during the later TR, the stable threshold of gas concentration under ventilation is much smaller than that without ventilation. The results can provide a theoretical guide in gas diffusion and detection, which is meaningful to the early warning and safe protection of EES systems.

Published
2024
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