10/350μs直击雷电流测量用Rogowski线圈的研制  

Development on Rogowski Coil for Measuring 10/350μs Direct Lightning Current

作　　者：陈景亮[1] 姚学玲[1] 

机构地区：[1]西安交通大学电气工程学院电力设备电气绝缘国家重点实验室,西安710049

出　　处：《高电压技术》2010年第10期2412-2417,共6页High Voltage Engineering

基　　金：陕西省重大科技创新项目(2008ZKC02-10)~~

摘　　要：为了兼顾10/350μs直击雷电流波形快速上升的波前部分的高频分量与缓慢变化的波尾低频分量的需求,在对10/350μs波形进行频谱分析的基础上,设计了带磁芯式的宽频自积分Rogowski线圈,满足10/350μs直击雷电流波几十Hz到几百kHz频谱的要求。采用10/350μs直击雷电流的Crowbar回路,对设计的自积分Ro-gowski线圈进行了实验并与标准同轴管式分流器进行了测量结果的比对,实验结果表明:研制的Rogowski线圈对幅值<80kA的10/350μs雷电流波,其峰值、波前时间、半峰值时间等具有较高的测量精度,与标准同轴管式分流器测量结果相比,峰值测量的偏差≤2%,波前时间的测量偏差≤1.5%,半峰值时间的测量偏差≤2%,基本满足10/350μs波形测量精度的要求,可应用于大电流等级的10/350μs直击雷电流的测量以及其它类似场合。Taking into account the high-frequency component of rapidly rising part and low-frequency components of long duration time of the 10/350μs directly lightning current waveform,we have designed a kind of self-integral Rogowski coil with a core.Based on the frequency spectrum analysis of 10/350μs waveform,the designed self-integral Rogowski coil can meet the requirements of 10/350μs pulse current waveform whose frequency distribution is from tens Hz to hundreds thousand kHz.The 10/350μs pulse current crowbar circuit is adopted and the experiments are carried out.The experimental results show that the Rogowski coil has excellent characteristics for measuring 10/350 μs pulse current parameters including front time,duration time and peak current.At the same time,comparing to the measuring results of standard shunt,within the peak of 80kA,the peak measuring error is less than 2%,the front time is less than 1.5%,and the duration time is less than 2%.So the Rogowski coil can be used to measure 10/350μs pulse current wave and other similar occasions.

关 键 词：10/350μs直击雷电流 频谱分析 磁芯 自积分Rogowski线圈 大电流 测量精度 

分 类 号：TM55[电气工程—电器]