Lin Du received his M.S and Ph.D. degrees in electrical engineering from Chongqing University, Chongqing, China, in 1996 and 2003, respectively. He is currently a Professor at Chongqing University. His major research interests include high-voltage testing techniques, online detection of insulation conditions of electrical apparatuses, insulation fault diagnosis for high-voltage equipment, and online overvoltage monitoring and recognition.