Experimental Impulse Response of Grounding Grids

摘要：

Experimental tests, consisting in the impression of low amplitude impulsive currents with lightning-patterned waveforms on a real grounding grid, were performed to assess the grid transient response.Simultaneous waves of current and grounding potential rise were measured considering the current impression on different points along the grid electrodes (earth termination) to determine the impulsive grounding impedance.Currents with very short front-times were used to show strong propagation effects in the soil, responsible for values of grounding impedance always significantly larger than the measured low frequency resistance and strongly dependent on the position where current was impressed on the grid.

作者: Silverio Visacro Miguel. B. Guimaraes N. Roger A. Araujo Listz S. de Araujo

作者单位: Lightning Research Center,Federal University of Minas GeraisAv.Antonio Carlos 6627 - 31270-901 Belo Lightning Research Center,Federal University of Minas Gerais Av.Antonio Carlos 6627 - 31270-901 Belo

会议类型: 国际会议

会议名称: 第七届亚太防雷国际会议

会议地点: 成都

会议语种:英文

页码: 1-5

在线出版日期: 2011-11-01（万方平台首次上网日期，不代表论文的发表时间）