采用Rogowski线圈测量雷电冲击电流

Thunder Current Measurement Using Rogowski Coil

传统电磁式CT应用在高频大暂态电流测量中存在波形失真的不足,而Rogowski线圈可以较好地用于该类冲击电流幅值及波形的测量.通过对一个实际Rogowski线圈的动态特性进行理论计算并仿真,再与实测结果相对比.对比分析结果表明,Rogowski线圈在大幅度范围里对雷电冲击电流测量精度都能满足要求.

The shortcoming that waveform distortion exits in the use of large scope and high speed transient current measurement through current transformer;on the contrary such measurement on impluse current can be put up well with the Rogowski coil.The dynamic property of a practical coil is analyzed theoretically,and compared with the result of experiments on the coil.the conclusion that the precision which is required in the measurement on impulse current of a large scale can be satisfed through Rogowski coil is achieved.