Impacts of Tower Current Shunting on Impulse Earthing Resistance Measurement
The impulse earthing resistance is an important parameter to measure the lightning protection performance of transmission towers.Nowadays,the current study at home and abroad mainly focuses on its circuit equivalence and theoretical calculation,and the various analysis methods haven't reached consensus.There has been relatively less study on practical field measurement of impulse resistance.In this paper,the accurate current measurement in measuring impulse resistance is studied using simulation and small-scale model measuring; the impacts of tower current shunting on current measurement are proposed and verified; each influencing factor of tower current shunting is comprehensively analyzed and thereupon an accurate current correcting method is put forward.
NETL
NSTL
万方数据
维普
