کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Winding Configuration in High‑Frequency Current Transformers for Partial‑Discharge Detection in Power Cables

نویسندگان :

Amirhossein Dehghan Ahangar¹ Asghar Akbari Azirani² Mohammad Rahimi³

1- Department of Electrical Engineering K. N. Toosi University of Technology 2- Department of Electrical Engineering K. N. Toosi University of Technology 3- Department of Electrical Engineering K. N. Toosi University of Technology

کلمات کلیدی :

Partial Discharge Detection،FEM (Finite Element Method،High-Frequency Current Transformer،COMSOL Multiphysics Simulation،Partial Discharge،Frequency Domain Analysis

چکیده :

Partial discharge (PD) testing is a key diagnostic technique for evaluating the insulation of high-voltage cables. High-Frequency Current Transformers (HFCTs) are widely adopted for PD detection owing to their wide bandwidth, galvanic isolation, and simple construction. However, their performance is strongly influenced by design parameters such as the number of turns, winding-to-core distance, and winding distribution. In this work, an HFCT was modeled in COMSOL Multiphysics using Material 52 ferrite, considering both complex permeability in the frequency domain and nonlinear B–H curves in the time domain. Simulation results show that increasing turns extends bandwidth but reduces sensitivity, while wider winding coverage improves magnetizing inductance and lowers flux leakage. The winding to core spacing showed negligible influence on overall sensitivity within the tested range. Overall, proper balance and core material selection are essential for optimal HFCT design.