中文摘要：

为将光子数参数用于放电强度的量化分析,以10、35、110 kV的复合绝缘子为研究对象,利用CoroCAM504紫外成像仪研究了电晕放电时,紫外光子数随放电强度、仪器增益和观测距离的变化特性。结果表明：光子数和电流脉冲峰值具有近似线性关系,且都随着电压的增加而增大;但上述3种复合绝缘子的光子数与电流脉冲峰值之间的比例系数不同。随着仪器增益的增大,光子数一般呈现出先增加后减小、在高增益时又增加的变化特性,且观测距离越近,仪器增益对光子数的影响越显著。光子数随观测距离的增大而减小,2者之间具有幂函数关系,幂指数在1.1~1.6之间。

英文摘要：

In order to apply photon count parameter to quantitatively determine discharge intensity, taking 10, 35, and 110 kV composite insulators for examples, we investigated the variation of ultraviolet corona discharge photon count due to varying discharge intensity, imager＇s gain and observation distance, by using a CoroCAM504 ultraviolet imager. The re- suits show that the photon count is approximately linear to the peak value of current pulse peak, and they both increase with the applied voltage. However, the proportion coefficients between the photon count and the current peak are different for the three kinds of insulators. With the increase of imager＇s gain, the photon count increases firstly, then decreases, and may increase again after the gain getting high enough; moreover, the gain has more influences on the photon count when the observation distance is smaller. Meanwhile, photon count decreases with the increase of observation distance, and the two approximately fits a power function with power-exponent of 1.1-1.6.