Causes and Counter Measures of a Lightning Accident
Tao Hu · Insulators and Surge Arresters · 2008
In view of certain lightning accident happened in a chemical plant,the situation of the chemical plant is introduced,the factors caused by lightning accident,such as influence of meteorological conditions,lightning protection system,grounding system,insulation coordination and influence of switching over-voltage are discussed. In order to run this chemical plant safely,the five improvement factors against lightning accident such as enhancing lightning proof measures,improving earth system,improving insulation coordination by replacing to high insulation level of 6 A or 6 B,installing reasonable zero sequence protective tripping values and enhancing electrical equipment insulation supervises and maintenance should be proved with these measures the reliable running of factory's electric system .