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用自制的高频电流传感器对３种典型电流波：阶跃波、冲激波、正弦稳态波作用时的输出响应进行了理论分析和实际测试．理论与实测结果表明，对阶跃波和冲激波，传感器的输出为衰减振荡波；对正弦稳态波，当输入正弦波频率与传感器自振频率相等时，传感器的输出最大．高频电流传感器作为检测阻抗，可用于变压器局部放电的在线监测
The self-made high-frequency current sensors were used to analyze and test the output responses of three kinds of typical current wave: step wave, impulse wave and sine steady state wave. The theoretical and experimental results show that the output of the sensor is an attenuated oscillatory wave for the step and impulse waves, and the output of the sensor is the largest for a sinusoidal steady state wave when the input sine wave frequency is equal to the natural frequency of the sensor. As the detection impedance, the high-frequency current sensor can be used for on-line monitoring of transformer partial discharge