大气条件对空气间隙放电特性的影响及其数值解析式

Effect of Atmosphere Condition on Discharge Characteristic of Air Gap and Its Analytic Equation of Numerical Value

空气间隙放电与大气条件有关。将常态大气条件下的普通空气作为研究对象,探讨了不同大气条件下空气隙在耐受工频电压和雷电冲击电压下的放电特性,获取了因大气条件变化而导致空气隙的工频与雷电冲击击穿电压的波动范围,并建立了对应的数值解析式。该式能把工频电压和雷电冲击电压下空气隙的放电曲线箍在特定的范围内。实测结果表明所建立的数值解析式与试验值有较好的吻合性。

The discharging voltage of air gap depends on the atmosphere condition. The discharging properties of air gap in natural ambience with different conditions under power frequency voltage and lightning impulse voltage are studied. The discharging curves for power frequency voltage and lightning impulse voltage are measured and its fluctuation range caused by variation of air condition is found. Analytic equation of numerical value described the change range of air gap discharging characteristics is deduced in this paper. The test results show the theoretical analysis is consistent with measured value.