基于电磁波频谱的棒形悬式复合绝缘子内部缺陷放电检测方法  

A Fault Detection Method of the Internal Discharge of Composite Rod Insulators Based on Electromagnetic Spectrum

作　　者：郭巍[1] 黄海鲲[2] 许军[2] 刘宇舜[1] 李涵[1] 周文俊[1] 喻剑辉[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]福建省电力有限公司电力科学研究院,福州350007

出　　处：《电瓷避雷器》2015年第6期43-49,共7页Insulators and Surge Arresters

摘　　要：分析了棒形悬式复合绝缘子绝缘内部缺陷放电的故障形成机理及过程,依据发展不同时期的严重程度,提出相应的故障模拟方法。通过仿真计算绝缘子高压端及故障位置的电场畸变情况,验证故障模拟方法的可靠性。测量不同故障状态下棒形悬式复合绝缘子故障放电辐射的电磁波频谱,得出不同故障放电的幅频特性。同时通过紫外成像仪观察故障处的放电光子数,对比不同严重程度内部故障情况下的放电情况。试验结果证明,通过检测棒形悬式复合绝缘子加电压时缺陷处辐射电磁波的幅频特性,可以判断绝缘是否发生故障及故障的严重程度,为线路巡检故障棒形悬式复合绝缘子提供了新的方法。The author analyses the mechanism and process of the internal discharge of composite rod insulators. Based on the severity of different types of failures, corresponding fault simulation methods are raised. By using Ansoft to calculate the electric field of the high voltage end and fault spot, reliability of the simulation methods is verified. By measuring electromagnetic spectrum of simulated faults, the amplitude-frequency characteristics are concluded. Meanwhile the ultraviolet imager is used to observe the number of photons as a comparison. By carrying out a series of experiment, it can be proved that through the detection of electromagnetic wave, different insulators can be distinguished. And this offers a new insulators. types of internal faults of composite rod idea for line inspection of composite rod

关 键 词：棒形悬式复合绝缘子 内部缺陷放电 故障模拟 电场分布 电磁波频谱 幅频特性 

分 类 号：TM216[一般工业技术—材料科学与工程]