Research on the Revision and Drawing of the Distribution Map of Ice Zones in China Southern Power Grid

Inhalt:
Scientific and credible ice zones’distribution map is significant in design, operation and maintenance of power transmission lines. This study uses the ice disaster data of Yunnan and Guizhou provinces from 2018 to 2021, by following the basic principles of revision and drawing, the ice area level adjustment is made in both ice area maps of parts of Guizhou and Yunnan 2018. The specific changes are as follows: the ice level of Yongshan, Huize, Luliang and Wenshan Qiubei in Yunnan Zhaotong County, Bijie Dafang Area in Guizhou are appropriately increased; Kunming Economic Development Zone, Yunnan, and Southwestern Guizhou’s ice zone is appropriately lowered.