高压储能电容器直流局部放电检测仪的研制  

Development of DCPD Detection Instrument for High-Voltage Storage Capacitor

作　　者：张血琴[1] 吴广宁[1] 曲衍宁[1] 舒雯[1] 冉汉政[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《西南交通大学学报》2006年第6期743-747,共5页Journal of Southwest Jiaotong University

基　　金：国家自然基金联合资助项目(10476022);西南交通大学博士创新基金的资助.

摘　　要：为了评估高压储能电容器的性能，基于RLC平衡检测阻抗法和血（相邻放电脉冲时间间隔）分析法，研制了高压储能电容器直流局部放电检测仪．该仪器主要由具有良好抗干扰能力的60—250kHz检测硬件和能进行数据处理与统计分析的局部放电分析软件组成．对含有内部、接触、重叠典型缺陷的高压储能电容器模型进行了直流局部放电测试，△t分布及放电量谱图表明，该检测仪能较好地检测出有缺陷的电容器局部放电产生的原因及其绝缘状态．Based on the RLC balance resistance detection and △t （time interval between two consecutive discharges） analysis techniques, a DCPD （direct current partial discharge ） detection instrument for high-voltage storage capacitors was developed to estimate the performance of a high- voltage storage capacitor. This instrument consists of a good anti-jamming hardware with a 60 to 250 kHz bandwidth and a DCPD analysis software with signal processing and statistic calculation functions. A DCPD test was carried out on capacitor models respectively with classical inner, contact and overlapping defects. The △t distribution and discharge spectrum show that the DCPD detection instrument can detect partial discharges and find out the reason of partial discharges and the insulation state of a high-voltage storage capacitor.

关 键 词：高压储能电容器 直流局部放电 RLC平衡检测阻抗法 △t(相邻放电脉冲时间间隔)分析 典型缺陷 

分 类 号：TM835[电气工程—高电压与绝缘技术]