小型大电流Rogowski线圈设计及性能

为适应电流测量的新要求,介绍了一种针对高频大电流测量的小型Rogowski线圈。研究了线圈不均匀放置包括偏心放置和倾斜放置对电流测量性能的影响后提出了线圈屏蔽盒、线圈导线多层绕制和使用磁芯线圈等设计方案,并使用多种结构的线圈测量了电流波形,得到了大量的测试数据。对比国外标准电流测试探头测试数据改进设计,取得很好的效果,并证明了使用磁性材料利于满足线圈自积分条件,但使用磁性材料必须充分考虑工作频带和饱和磁感应强度,相比而言空心线圈的工作频带更宽。

Design and Performance of Miniature Rogowski Coil for Heavy Current Measurement

A kind of miniature Rogowski coil which measures high frequency and heavy current is introduced,and the principle of work of Rogowski coil is analyzed.The influence of non-uniform laying of the miniature Rogowski coil,including the biased laying and the inclined laying on the electric current survey performance is discussed.In order to reduce the influence of the coil laying on the capriciousness,the coil may be wound thread or increased evenly from the integral coefficient.The Rogowski coil of the hollow multi-layer circles reduces the coil stray capacity in the manufacture process.The design project of coil is proposed,the current waveform is tested by using many kinds of structures of the coil,and the massive test data are obtained.Through comparing the overseas standard electric current test and head test data of the probe,the current coil design is improved unceasingly.The test using magnetic material can enhance the coil actually from the integral criterion function,but the used magnetic material should have saturation induction density and consider its working band.