5Abraham A P, Prabhakar B R. Effect of humidity and temperature on the DC breakdown of rob-rob and rob-plane gaps[J]. IEEE Transactions on Electrical Insulation, 1992, 27(2) :207- 213.
6Kuffel E. Influence of humidity on the breakdown voltage ot sphere-gaps and uniform-field gapsEJ]. IEEE Power Engineering, 1961, 108(40): 295-301.
8Rizk F A M. Influence of rain on switching impulse sparkover voltage of large-electrode air gaps[J]. IEEE Transactions on Power Apparatus and System, 1976, 95(4): 1394-1402.
10Ahmad A S, Ghosh P S, Aljunid S A K, et al. Modeling of various meteorological effects on contamination level for suspension type of high voltage insulators using ANN[C] ff Transmission and Distribution Conference and Exhibition 2002. Asia Pacific: IEEE/PES, 2002, 2: 1030-1035.