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采用电磁感应原理设计出宽频带高灵敏度脉冲电流传感器。对其幅频特性进行了分析,总结出设计原理,即选择磁导率高、频率特性好的磁芯材料,适当地选择尺寸、积分电阻和线圈匝数,传感器可获得较大的带宽和一定的灵敏度,能够较准确地传递信号,可用于局部放电检测。运用所研制的传感器对试品中的局部放电信号进行了测试,给出了实测结果及局部放电波形。
Using the principle of electromagnetic induction to design a wideband high sensitivity pulse current sensor. The amplitude-frequency characteristics are analyzed, and the design principle is summarized, that is, the core material with high permeability and good frequency characteristics is selected, the size, the integral resistance and the number of turns of the coil are appropriately selected, and the sensor can obtain a larger bandwidth and a certain The sensitivity, can be more accurate signal transmission can be used for partial discharge detection. The partial discharge signals in the test samples were tested by the developed sensors, and the measured results and partial discharge waveforms were given.