Chae-Kyun Jung ([email protected]) is a principal researcher in the power transmission laboratory at KEPCO Research Institute. He is responsible for several areas of research, including the insulation diagnostic technology of high-voltage dc cable systems, fault location, transient analysis of the power system and power cable performance testing. He received his Ph.D. degree in electrical engineering from Wonkwang University, South Korea, in 2006. From 2006 to 2007, he worked at the University of Siegen, Germany, as a postdoctoral researcher. He has been with KEPCO Research Institute since 2007.