Large Language Model-Aided Edge Learning in Distribution System State Estimation
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Journal / Publication | IEEE Internet of Things Journal |
Publication status | Online published - 18 Oct 2024 |
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Abstract
Distribution system state estimation (DSSE) plays a crucial role in the real-time monitoring, control, and operation of distribution networks. Besides intensive computational requirements, conventional DSSE methods need high-quality measurements to obtain accurate states, whereas missing values often occur due to sensor failures or communication delays. To address these challenging issues, a forecast-then-estimate framework of edge learning is proposed for DSSE, leveraging large language models (LLMs) to forecast missing measurements and provide pseudo-measurements. Firstly, natural language-based prompts and measurement sequences are integrated by the proposed LLM to learn patterns from historical data and provide accurate forecasting results. Secondly, a convolutional layer-based neural network model is introduced to improve the robustness of state estimation under missing measurement. Thirdly, to alleviate the overfitting of the deep learning-based DSSE, it is reformulated as a multi-task learning framework containing shared and task-specific layers. The uncertainty weighting algorithm is applied to find the optimal weights to balance different tasks. The numerical simulation on the Simbench case is used to demonstrate the effectiveness of the proposed forecast-then-estimate framework. © 2024 IEEE.
Research Area(s)
- Distribution system state estimation, forecasting, large language models, multi-task learning
Citation Format(s)
Large Language Model-Aided Edge Learning in Distribution System State Estimation. / Xie, Renyou; Yin, Xin; Li, Chaojie et al.
In: IEEE Internet of Things Journal, 18.10.2024.
In: IEEE Internet of Things Journal, 18.10.2024.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review