Study on the Change of Photon Number with Humidity in UV Detection of External Insulation Corona Discharge and Its Correction Method

In order to make the photon number of the UV imaging detector detectable under different air relative humidity, select the tip discharge as the experimental model, explore the change characteristics of the relative humidity of the air to the photon number detection, establish a suitable function model, and use Matlab. The software fits the experimental data to obtain a formula for correcting the photon number with the relative humidity of the air. The verification results show that the photon number is corrected with the air relative humidity correction formula, which can meet the needs of actual engineering measurement.