8Pillai P R, Dick E P. A review on testing and evalua- ting substation grounding systems[J]. IEEE Trans- actions on Power Delivery, 1992, 7(1).. 53-61.
9Haddad A, Griffiths H, Ahmeda M, et al. Experi- mental investigation of the impulse characteristics of practical ground electrode systems[C]//2010 Interna- tional Conference on High Voltage Engineering and Application (ICHVE). New Orleans: IEEE, 2010: 469-472.
10Grcev L. Impulse Efficiency of Ground Electrodes[J].IEEE Transactions on Power Delivery, 2009, 24 (1) : 441-451.
