Research Article
Regional Model Simulation of the Ice Disaster in Hunan Power Grid During January 2022: Effect of Nanling Mountains on Precipitation
@INPROCEEDINGS{10.1007/978-3-031-31733-0_10, author={Tao Feng and Yihao Zhou and Zelin Cai and Xunjian Xu and Lei Wang}, title={Regional Model Simulation of the Ice Disaster in Hunan Power Grid During January 2022: Effect of Nanling Mountains on Precipitation}, proceedings={Smart Grid and Innovative Frontiers in Telecommunications. 7th EAI International Conference, SmartGIFT 2022, Changsha, China, December 10-12, 2022, Proceedings}, proceedings_a={SMARTGIFT}, year={2023}, month={5}, keywords={Power line icing Topography Numerical simulation}, doi={10.1007/978-3-031-31733-0_10} }- Tao Feng
Yihao Zhou
Zelin Cai
Xunjian Xu
Lei Wang
Year: 2023
Regional Model Simulation of the Ice Disaster in Hunan Power Grid During January 2022: Effect of Nanling Mountains on Precipitation
SMARTGIFT
Springer
DOI: 10.1007/978-3-031-31733-0_10
Abstract
Hunan Province is one of the regions that are mostly affected by the freezing rain and ice disaster in China, because its unique topography is conducive to the southward intrusion of cold air from the north. This hazard can cause the line icing, threaten the operation of power grid and bring great socioeconomic losses. Understanding the mechanisms related to the topography effect on precipitation near Hunan is important to improve the prediction and prevention for the ice disaster during winter. In this study, we focus on an icing event at the beginning of 2022. The frontal precipitation in central Hunan features a southwest-northeast band distribution in this event, which is caused by the strong convergence from northern cold air and southwesterly flows in the subtropics. The numerical simulations are further conducted based on WRF model to test the effect of topography near Nanling Mountains on the local precipitation in Hunan. The results show that the reduction or elimination of the Nanling Mountains has limited impact on the overall distribution and amplitude of precipitation near Hunan in this event, but the latitudinal location of precipitation band and its western range slightly change. These changes might be related to the changed local convergence caused by the enhanced southward intrusion of cold air without the blocking of the Nanling Mountains.
