摘要
为了有效地进行各种放电现象的声发射检测和识别,以典型的针-板电极为基础,研究了电晕放电声发射现象,在大量试验基础上,总结了电晕放电声发射波的共性试验特征,结合气体放电理论和波动理论解释了电晕放电声发射的试验现象,引入量纲理论,分析了电晕声发射现象的影响因素。试验发现,电晕声发射波具有规则的工频周期性,在一个工频周期内,强、弱声发射波在正、负半周内交替出现;理论分析发现,在室温和标准大气压下,电晕声发射现象主要决定于电晕过程中快速释放的能量。
In order to detect and identify correctly acoustics emission （AE） wave of discharge from insulator, the AE of corona is explored systemically by plentiful experiment based on typical rod-plane system. The common test characteristics of AE of corona are summarized based on experiment results. Combining with gas discharge theory and wave theory, the generation mechanisms of corona AE are explained, and then the influence factors of corona AE are analyzed by applying dimensional methods in mechanics. Experiment results show that the AE waves of corona take on regular periodicity and appear once or twice in every test voltage period. Strong and weak AE waves respectively alternately appear in positive and negative test voltage period. In addition, the AE waves are determined uniquely by initial discharge energy E0, which is released instantaneously,under room temperature and standard air press and when rod radius re is much smaller than the gap length.
出处
《高压电器》
CAS
CSCD
北大核心
2010年第1期27-31,共5页
High Voltage Apparatus
基金
湖北省教育厅自然科学研究项目计划资助(D20091304)
关键词
电晕
声发射
特征
量纲分析
corona
acoustic emission
character
dimensional methods
