Research on High-strength Flexible Insulation Rod of Ultra High Voltage Live Working Zhigang Wang, Yun Xiang, Ziqi Yi, Longfei He, Mingjie Chen and Peng Li E3S Web Conf., 248 (2021) 01054 Published online: 12 April 2021 DOI: 10.1051/e3sconf/202124801054