Research on Zero Value Detection Technology of Porcelain InsulatorXiaopo Mao, Xueming Zhou, Yaodong Zhang, Zijian Li, Zeqi Huang, Zhiqiang Feng, Xiang Ren, Jianjin Fu, Junjie Huang and Tianru ShiE3S Web Conf., 257 (2021) 01021DOI: https://doi.org/10.1051/e3sconf/202125701021