Energies, Vol. 18, Pages 4761: Analysis of the Dynamic Properties of the Rogowski Coil to Improve the Accuracy in Power and Electromechanical Systems

Energies, Vol. 18, Pages 4761: Analysis of the Dynamic Properties of the Rogowski Coil to Improve the Accuracy in Power and Electromechanical Systems

Energies doi: 10.3390/en18174761

Authors:
Krzysztof Tomczyk
Maciej Gibas
Marek S. Kozień

This paper presents an analysis of the dynamic properties of the Rogowski coil, primarily by determining the dynamic errors for several selected test signals and the upper bound of the dynamic error for two quality criteria: the integral-square error and the absolute error. A procedure for filtering and reproducing these signals is also presented. The foundation of the presented research is an equivalent circuit model of the Rogowski coil, developed primarily for applications in electrical power and electromechanical systems. Two novel aspects of this work are the determination of dynamic errors for the Rogowski coil and a graphical and quantitative comparison of their values. The research results presented in this paper may serve as a foundation for enhancing the accuracy and dynamic reliability of both the Rogowski coil and other devices (e.g., transformers and current transformers) used in the power industry and mechanical engineering, particularly in the condition monitoring of a broad range of power equipment and in the experimental analysis of electromechanical systems operating under variable load conditions. The findings also highlight the importance of accurate current measurement in modern energy systems, where transient and high-frequency components increasingly affect performance and reliability. Consequently, the presented methodology provides a useful framework for guiding sensor selection and signal processing strategies in advanced monitoring and control applications.