紫外辐射强度表示电晕放电特征的试验研究与分析  

Experimental Study on the Characteristics of Corona Discharge by Ultraviolet Emission Intensity

作　　者：吴礼刚[1,2] 袁永刚[3] 严浩军[4] 梁帅伟[4] 刘鹏[4] 马丽军[4] 赖靖胤[4] 童啸霄[2] 李祖盼[2] 

机构地区：[1]宁波工程学院电子与信息工程学院,浙江宁波315216 [2]宁波大学信息科学与工程学院,浙江宁波315211 [3]中国科学院红外成像材料与器件重点实验室,上海200083 [4]宁波电业局,浙江宁波315010

出　　处：《应用基础与工程科学学报》2012年第2期329-335,共7页Journal of Basic Science and Engineering

基　　金：浙江省公益性技术应用研究计划项目(2010C31087);浙江省自然科学基金(Y1110582);国家863农业装备专项(2008AA100905);中国科学院红外成像材料与器件重点实验室开放基金(IIMDKFJJ-10-03);宁波市自然科学基金资助项目(2010A610180;2011A610206)

摘　　要：目前在电晕放电故障的紫外检测过程中,电晕紫外辐射强度与传输距离的关系,以及放电过程中的电光特征量之间的量化关系仍然需要进一步研究.在晴朗天气下采用CoroCAM紫外成像仪观察电晕放电,发现20几米内探测到的紫外辐射强度仅与距离平方成反比.此外,通过电光传递函数研究放电过程中的电光特征量之间的量化关系,发现同一湿度下,起晕后即使电压增大约一倍,紫外光脉冲数仍与电晕电流强度有着近似的线性比例关系,因此可以通过紫外光脉冲数来表征电晕放电强度等级.There are still such two critical problems as the relationship between solar blind ultraviolet（SBUV）emission intensity and transmission distance,and the quantitative relationship between SBUV emission intensity and corona current strength,should be further studied in ultraviolet inspection technology of discharge events.It was shown that in sunny day,within more than 20 meters,SBUV emission intensity detected by CoroCAM was only inversely proportional to the square of distances.Besides,through the electrical-to-optical transfer function（EOTF）from corona current strength to SBUV pulse number,it was found that at the same humidity,even if the supplied voltage increased nearly 1 time higher than that of corona inception,the SBUV pulse number was still in an approximately linear relation with the corona current strength.Therefore,SBUV pulse number can characterize the level of corona discharge.

关 键 词：紫外辐射 紫外光脉冲数 电晕电流 传递函数 传输距离 

分 类 号：TM835[电气工程—高电压与绝缘技术] TN247[电子电信—物理电子学]