LI Baoluo,SUN Huadong,ZHANG Hengxu,et al.Transient Stability Assessment Framework of Power System Based on Two-stage Transfer Learning[J].Automation of Electric Power Systems,2022,46(17):176-185.
LI Baoluo,SUN Huadong,ZHANG Hengxu,et al.Transient Stability Assessment Framework of Power System Based on Two-stage Transfer Learning[J].Automation of Electric Power Systems,2022,46(17):176-185. DOI: 10.7500/AEPS20211207005.
Transient Stability Assessment Framework of Power System Based on Two-stage Transfer Learning
In order to improve the adaptability of the data-driven transient stability assessment model to the power grid
deep transfer learning is introduced into the updating process
and a transient stability assessment framework based on two-stage transfer learning is proposed. The proposed framework is divided into two stages according to the time scale. In the first stage
the deep subdomain adaptive network is used to mine unlabeled data information
and the evaluation performance of the model is rapidly improved to a relatively reliable level. The obtained transfer model is combined with the time domain simulation method for comprehensive stability judgment
which improves the usability of the model in the initial stage of power grid change. In the second stage
the transfer model is used to select the high-value sample set
and the second update is carried out by combining the sample transfer and fine-tuning technology to restore the evaluation performance to a higher level and reduce the updating time cost. The test results in the models of IEEE 39-bus system and a provincial power grid in China show that the proposed framework has completeness and can make the model quickly respond to the changes in the power grid.
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