Experimental Study on the Effect of Environmental Factors on Corona Discharge Using Ultraviolet Imaging Detection

WANG Shenghui; LI wei; JIANG Tingyue; NIU Leilei; Lü Fangcheng; LI Nan

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Experimental Study on the Effect of Environmental Factors on Corona Discharge Using Ultraviolet Imaging Detection

更新时间：2025-12-08

- Experimental Study on the Effect of Environmental Factors on Corona Discharge Using Ultraviolet Imaging Detection
- Vol. 47, Issue 2, Pages: 504-511(2021)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院
  2. 保定供电公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：28 February 2021，
  
  Published：2021
- 稿件说明：
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WANG Shenghui, LI wei, JIANG Tingyue, et al. Experimental Study on the Effect of Environmental Factors on Corona Discharge Using Ultraviolet Imaging Detection[J]. 2021, 47(2): 504-511.
DOI：

WANG Shenghui, LI wei, JIANG Tingyue, et al. Experimental Study on the Effect of Environmental Factors on Corona Discharge Using Ultraviolet Imaging Detection[J]. 2021, 47(2): 504-511. DOI：

摘要

为研究温度、湿度、风速和气压等环境因素对电晕放电紫外成像检测的影响特性

论文以棒-板间隙模型为研究对象

利用Coro CAM504紫外成像仪在增益70%下采集了不同环境因素下交流放电的紫外视频信号。试验结果表明:放电光斑面积随温度的增加而增加

但具有明显的非线性;放电光斑面积随湿度的增加而减少

变化曲线近似满足幂函数关系

当湿度在40%～90%的范围内时

幂指数约在1.6～2.6之间变化;风速对电晕放电具有明显的削弱作用

风速为12 m/s时的光斑面积较无风减少76.7%;放电光斑面积随气压的降低而明显增加

在云南昆明与河北保定现场的实际对比测试结论与实验室基本一致。在上述试验研究的基础上

论文提出了基于修正系数法的放电光斑面积归一化方法

其修正后的相对误差一般低于20%。

Abstract

In order to study the influences of environmental factors such as temperature

humidity

wind speed and air pressure on the detection of corona discharge ultraviolet imaging

the rod plate gap model is taken as the research object in this paper. The ultraviolet visual frequency signals of AC discharge under different environmental factors are collected by using the CoroCAM504 ultraviolet imager at 70% gain. The experimental results show that the area of the discharge spot increases non-linearly with temperature. The area of the discharge spot decreases with increasing humidity

and a power-law relationship governs this behaviour. At a humidity of 40% to 90%

the power index varies from 1.6 to 2.6. Wind speed weakens coronal discharge: when the wind speed is 12 m/s and the voltage is 50 kV

the discharge spot area is reduced by 76.7% compared with that in windlessl conditions. Air pressure has a significant effect on ultraviolet imaging. The test results in Kunming

Yunnan Province and Baoding

Hebei Province are basically the same as those in the laboratory. On the basis of the above experimental research

the method of normalization of discharge spot area is proposed based on the modified coefficient method

and the corrected relative error is generally less than 20%.

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