电网技术2011，Vol.35Issue(2)：149-153,5.
干式变压器局部放电在线监测脉冲电流传感器的开发
Development of Pulse Current Sensor for On-Line Monitoring of Partial Discharge in Dry-Type Transformer
摘要
Abstract
Based on the transfer function corresponding to equivalent circuit model of self-integral Rogowski coil and by use of Matlab platform, the influences of parameters such as mean diameter of ring iron core, diameter of circular cross-section of iron core, coil turns as well as load resistance and stray capacity on frequency characteristic and sensitivity of pulse current sensor for partial discharge monitoring are analyzed. According on-site practice, a criterion for the selection of parameters, which offers theoretical foundation for the design and manufacturing of pulse current sensor, is put forward. Based on the proposed criterion a pulse current sensor for the on-line monitoring of partial discharge in dry-type transformer is developed and corresponding experiments to test the characteristics of the pulse current sensor are performed.Experimental results show that the proposed pulse current sensor possesses good frequency response characteristic and the design requirements are met.关键词
脉冲电流传感器/Rogowski线圈/干式变压器/局部放电/频率特性Key words
pulse current sensor/ Rogowski coil/ dry-type transformer/ partial discharge/ frequency characteristics分类
信息技术与安全科学引用本文复制引用
张志东,宋建成..干式变压器局部放电在线监测脉冲电流传感器的开发[J].电网技术,2011,35(2):149-153,5.基金项目
"十一五"国家科技支撑计划重大项目(2007BAK29B05,2007BAB13B01),山西省高等学校优秀创新团队资助项目. （2007BAK29B05,2007BAB13B01）
