一种改进的基于Rogowski线圈的电子式电流互感器数字积分算法

A Digital Integral Arithmetic of an Improved Electronic Current Transformer Based on Rogowski Coil

基于Rogowski线圈的电子式电流互感器得到了广泛的应用，其中积分器对电子式电流互感器的稳定性和精度具有重要的影响。针对Rogowski线圈的积分算法分别提出了模拟和数字两种算法及其实现形式，从原理上给出了各自的传递函数，并对幅频、相频特性和性能进行了分析。结合实际应用设计了基于双线性变换数字积分算法的数字积分器，实验结果验证了该积分器的有效性和实用性。

Electronic current transformer based on Rogowski coil has been applied widely in the power system. The performance of integrator is a main factor affecting the stability and precision in the Rogowski transducer. This paper describes the format of implement analyses the transfer functions based on their principle, the amplitude - frequency characteristics and phase - frequency characteristics. Finally, combining with the actual application in the project, the author designs a digital actuator based on testing results to prove the validity and practicability of the design method.