罗氏线圈低频/高频模型研究  

Study on Low Frequency and High Frequency Model of Rogowski Coil

作　　者：梁建锋[1] 李军浩[1] 吴磊[1] 郭磊[2] 李彦明[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710048 [2]陕西电力科学研究院,陕西西安710054

出　　处：《陕西电力》2011年第5期5-8,共4页Shanxi Electric Power

基　　金：国家自然科学基金(50977075)资助;国家重点基础研究发展计划(973)资助(2011CB209404)

摘　　要：介绍了罗氏线圈低频和高频模型,并给出罗氏线圈低频和高频模型中的参数计算公式,为设计罗氏线圈提供了设计流程。在实例分析中,应用罗氏线圈低频和高频模型设计出罗氏线圈,罗氏线圈低频和高频模型设计出的低频截止频率很接近,但是高频截止频率相差很大。因此,罗氏线圈在高频应用中,使用高频模型设计更加准确,而在低频应用中使用低频模型设计更加合理。讨论了罗氏线圈杂散电容的计算,电场计算程序能精确计算杂散电容,高频模型中计算杂散电容的解析表达式比低频模型中计算杂散电容的解析表达式精确度高。This paper introduces the operating principle of rogowski coil in brief,demonstrates the low frequency and high frequency model of rogowski coil,lists the parameters calculation formulas,and provides the design procedure of rogowski coil.In the case study,the low frequency and high frequency model are applied to design rogowski coil,in according to the design results,the low cut-off frequencies of the two models are almost the same,but the high cut-off frequencies of the two models are absolutely different, therefore it is reasonable that the rogowski coil used for low frequency measurement employs the low frequency model to design,the rogowski coil used for high frequency measurement employs the high frequency model to design.This paper also discusses the formulas of the stray capacitance of the rogowski coil,finds that electric field solver can calculate the stray capacitance exactly,and the formula（11）can be used to obtain an approximation solution for the stray capacitance,but the formula（4）exists a huge error for evaluating the stray capacitance.

关 键 词：罗氏线圈 低频模型 高频模型 

分 类 号：TM862[电气工程—高电压与绝缘技术]