Fault Prediction using a Grey-Markov Model from the Dissolved Gases Contents in Transformer OilsYang Liu, Yu Du, Zhiwu Wang, Guangming Feng, Shaowei Rao, Guoping Zou and Shiyou YangE3S Web Conf., 256 (2021) 01038DOI: https://doi.org/10.1051/e3sconf/202125601038