电晕放电等级的光学测量  

Optical Measurement in AC Corona Discharge

作　　者：童啸霄[1] 袁永刚[2] 吴礼刚[1] 严浩军 梁帅伟 王纶 林明晖 马丽军 刘鹏 徐铁峰[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]中国科学院上海技术物理研究所,红外成像材料与器件重点实验室,上海200083 [3]宁波市电业局,浙江宁波315010

出　　处：《光电工程》2011年第12期63-68,共6页Opto-Electronic Engineering

基　　金：浙江省公益性技术应用研究计划项目(2010C31087);浙江省教育厅资助项目(Y200804348);中科院红外成像材料重点实验室开放课题(IIMDKFJJ-10-03);宁波市自然科学基金资助项目(2010A610180);宁波大学王宽诚幸福基金资助项目

摘　　要：近几年紫外探测技术在电晕放电检测以及局部放电故障诊断方面的作用越来越突出。然而电晕放电过程中的电光特性,以及紫外辐射强度与电晕电流强度之间的量化关系仍然是一个值得深入研究的问题。在不同交流电压和湿度下,通过对电晕电流强度和紫外探测器响应的光脉冲数的测量,发现电晕电流强度和光脉冲数随极间电压的升高而显著升高,并且随着相对湿度的增加呈大致减小的趋势。在此基础上,通过电光传递函数研究了电晕电流强度和紫外光脉冲数之间的量化关系。结果表明,在不同电压和湿度下,传递函数变化并不大,保持在2.45～3.53之间,因此可以用紫外光脉冲数来表征电晕电流强度等级。这对于直接从光学角度定量表征放电等级,提高放电故障光学测量的准确率具有重要意义。In recent years,Ultraviolet（UV） detection technology in corona discharge detection and defect diagnosis of partial discharge has been widely used.However,electro-optic characteristics and quantitative relationship between corona current and UV emission intensity in the process of corona discharge are virtually worth studying deeply.With different Alternating Current（AC） voltage and different humidity,corona current and UV pulse number are measured.It is shown that corona current and pulse number rise with the voltage mounting up and approximately decline with humidity increasing.In addition,further discusses about the quantitative relationship between corona current and UV pulse number are implemented by using transfer function.The experiment results,under the conditions of different AC voltage and different humidity,indicate that transfer function maintained between 2.4？3.6 changes little.UV pulse number,therefore,can be used to characterize corona current intensity.The conclusions above are significant for characterizing the level of corona discharge directly by UV emission intensity,and are helpful for improving the accuracy of defect diagnosis.

关 键 词：交流电晕 电晕电流 紫外光脉冲 传递函数 

分 类 号：TM835[电气工程—高电压与绝缘技术]