基于声发射技术的绝缘子在线监测对比  

On-Line Monitoring Comparative Study of the Insulator Based on Acoustic Emission

作　　者：张美金[1] 刘胜芳[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,葫芦岛125105

出　　处：《计算机系统应用》2012年第5期145-148,共4页Computer Systems & Applications

摘　　要：为了深入了解声发射技术在绝缘子在线监测方面的应用,在充分了解声发射检测技术原理的基础上采用声发射技术对陶瓷绝缘子和复合绝缘子的污秽放电进行了对比研究。实验结果表明:两种绝缘子虽然实验电压存在高低差异,但在不同污秽度和实验电压下的污秽放电发出的声信号具有基本相同的特性,进一步证明了声发射技术在绝缘子污秽放电中是可行的。另外,在污秽实验中提取实际的声发射信号的特征量,采用模糊推理方法对实际数据进行处理,结果表明模糊推理可以正确判断污秽放电的强弱以及它对绝缘子的威胁程度。In order to deeply understand the applications of acoustic emission technology in the insulator on-line monitoring,based on the full understanding of acoustic emission testing technology principle,using the acoustic emission technology makes a comparative study of ceramic insulators and composite insulators uncleanness discharge.The experimental results show that although the experimental voltage of the two kinds of insulators exists high and low difference,the acoustic signals of filthy discharge basically have the same characteristics under the different degrees and experimental voltage,further proofed that the acoustic emission technology in polluted insulator discharging is feasible.In addition,in the polluted experiment extracts the actual characteristic quantities of acoustic emission signal,using the fuzzy reasoning method to process the actual data,the results show that the fuzzy reasoning can correctly judgment the strength of the uncleanness discharge and its threat level to insulator.

关 键 词：污秽闪络 声发射技术 在线监测 聚焦声传感器 隶属度函数 人工雾室 

分 类 号：TM216[一般工业技术—材料科学与工程]