高电压技术2017，Vol.43Issue(9)：2951-2957,7.DOI:10.13336/j.1003-6520.hve.20170831024
振荡型操作冲击电压下SF6气体中极不均匀电场局部放电特性
PD Characteristics of Non-uniform Electric Field in SF6 Gas Under Oscillating Switching Impulse Waveform
摘要
Abstract
That PD detection is carried out under the impulse voltage withstand test can more accurately judge the conditions of equipment insulation.Consequently,we studied the PD characteristics of defect with non-uniform electric field in SF6 gas under switching impulse waveform.The oscillating impulse waveform generating system was established and the switching impulse waveform conforming to the IEC 60060-3 standard was generated.The PD detection system based on UHF and pulse current methods was established.The needle-plane model was used to simulate the non-uniform electric field in SF6 gas.Moreover,the time delay,amplitude,number and phase of PD detection results were analyzed.The results show that PD occurs in the vicinity of peak of oscillating waveform and it will appear in multiple oscillating circles.The first oscillating circle has the stronger ability to produce PD and the first PD voltage is lower in first oscillating circle.The PD phase distribution width,PD amplitude,and number all increase with increase of the applied voltage.关键词
气体组合绝缘电器/冲击耐压试验/振荡型操作冲击电压/局部放电检测/极不均匀电场Key words
GIS/impulse voltage withstand test/oscillating switching impulse/PD detection/non-uniform electric field引用本文复制引用
熊俊,张亮,李军浩,王斯斯,陆国俊,吴国沛..振荡型操作冲击电压下SF6气体中极不均匀电场局部放电特性[J].高电压技术,2017,43(9):2951-2957,7.基金项目
国家自然科学基金(51207124).Project supported by National Natural Science Foundation of China(51207124). （51207124）
