阻尼振荡波电压下含针尖缺陷交联聚乙烯电缆绝缘的击穿特性研究  

Breakdown Characteristic of XLPE Cable Insulation with Needle Defect under Damped AC Voltage

作　　者：周立 周福升[2] 王诗航[2] 李建英[2] 李巍巍[2] 

机构地区：[1]江苏电力试验研究院有限公司,南京211103 [2]西安交通大学电力设备电气绝缘国家重点实验室,西安710049

出　　处：《绝缘材料》2013年第1期49-52,共4页Insulating Materials

摘　　要：基于10kV交联聚乙烯（XLPE）电缆试样，在阻尼振荡波（DAC）作用下，研究了20～300Hz频率内含针尖缺陷电缆绝缘的击穿特性随频率的变化规律。结果表明：在38．2～173．2Hz内，DAC击穿电压随频率的升高而增大，在173．2Hz处击穿电压达到峰值约为24kV；在173．2～300Hz内，DAC击穿电压随频率的升高而降低。The variation of breakdown characteristic versus frequency of 10 kV XLPE cable with needle defect was studied in a frequency range of 38.2-173.2 Hz under damped AC（DAC） voltage. The results show that when the frequency ranges from 38.2 Hz to 173.2 Hz, the breakdown voltage under DAC in-creases with the increase of frequency, and the breakdown voltage attains maximum at about 173.2 Hz. When the frequency is in the range of 173.2-300 Hz, the breakdown voltage under DAC decreases with the increase of frequency.

关 键 词：XLPE电缆 针尖缺陷 阻尼振荡波 电树枝 

分 类 号：TM201.44[一般工业技术—材料科学与工程] TM247[电气工程—电工理论与新技术]