6Owen E L. The historical development of neutral grounding practic- es[J]. IEEE Industry Applications Magazine, 1997, 3(2): 10, 12, 14, 16-18, 20.
7Song Y, Yuan S, Zhao C, et al. Analysis and selection of neutral grounding modes in cable distribution network[C]//Power Engineer- ing, Energy and Electrical Drives. International Conference on Powereng. Setubal, Portugal: IEEE, 2007:518-521.
8Yu L, Henriks R L. Selection of system neutral grounding resistor and ground fault protection for industrial power systems[C]//Industry Ap- plications Society 38th Annual on Petroleum and Chemical Industry Conferance. Toronto, Canada: IEEE, 1991: 147-153.
