摘要
电弧放电伴随着紫外光辐射,通过探测放电辐射强度可预测其对用电设备的危害程度。分析了电弧的产生机理及特征,依据电弧数学模型,探讨弧光辐射的检测方法,对针状物及金属物断裂处引起的放电脉冲特性进行研究与测试。采用通道型光电倍增管构建探测系统,对放电弧光进行捕获,测量不同距离处紫外光辐射的强度,作为判断电弧放电程度依据,说明导光、滤光对提高探测效果的作用。实验表明,该系统灵敏度高、线性度好,能实现微弱紫外光探测在线监测。
Arc discharges accompany with ultraviolet （UV） radiation. By detecting the radiation intensity of arc discharge the damage degree of arc to electrical equipments can be predicted. The mechanism and characteristics of arc are analyzed. According to the arc mathematical model, detection methods of arc radiation and characteristics of discharge pulse caused by spicule and metal fracture are studied. A detecting system based on channel photomultipliers is designed to capture arc. The UV radiation intensity at different distances is measured as a judgment basis of arc discharge degree. The improvement of detection effect by using light guide and light filtering modules is illustrated. The results show that the system can detect weak UV light with high sensitivity and linearity, and realize on-line monitoring of weak UV light.
出处
《激光与光电子学进展》
CSCD
北大核心
2011年第8期118-122,共5页
Laser & Optoelectronics Progress
基金
国家自然科学基金(60177036)资助课题
关键词
紫外探测
电弧
光电倍增
线性度
辐射强度
UV detection
arc
photoelectric multiple
linearity
radiation intensity
