5Natarajan R, Imece Ali F, Popoff J, et al. Analysis of grounding systems for electric traction [J]- IEEE Transactions on Power De- livery, 2001, 16 (3): 389-393.
6Xie Shaofeng. Study on methods to reducing rail potential of high- speed railway A. 32nd IEEE Industrial Electronics Annual Con- ference Proceedings C. Paris: IEEE, 2006: 1042- 1046.
7Hill R J, Carpenter D C. In situ determination of rail track electrical impedance and admittance matrix elements [J]. IEEE Transactions on Instrumentation and Measurement, 1992, 41 (5) 666-673.
