State Evaluation Model of High voltage Switchgear Based on Fuzzy Set-valued Statistical Method and Kernel Vector Space ModelZhang Xian, Xiong Qian, Cheng Changkui, Li Yuzhe, Liao Liangliang, Shi Shuang and Liu YoboE3S Web Conf., 252 (2021) 02007DOI: https://doi.org/10.1051/e3sconf/202125202007