Rogowski线圈无源外积分零序电流互感器研究

The Research of Rogowski Coils for Zero-sequence Current Transformer

分析了Rogowski线圈的结构和测量原理,应用于电力系统的Rogowski线圈一般工作在微分状态,采用外积分电路后,可对暂态电流作比较好的反应。根据自动控制系统理论,研究了由Rogowski线圈构成的无源外积分系统的稳定性和暂态性能,使用Matlab软件仿真,仿真结果表明有源外积分电路跟踪性能的有效性,适合对电力系统暂态电流的测量。

The structure and principle of the Rogowski coil used to measure zero-sequence current are summarized. The Rogowski coil in power systems usually works with a necessary outer integral circuit in the differential status, which could effectively reflect the transient current. Based on automatic control theory, the stability and transient performances of the system with passive integral circuits are analyzed. The simulation with Matlab shows that the passive integrator is effective in the power system transient current measurement.