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Modification of Permanent Magnet Synchronous Motor Drive Mechanism of SF6 HVCBs of 330/132kV Transmission Substation
Subject area: Science,Engineering and Technology · Area of research: Power Systems Engineering
DOI: https://doi.org/10.64388/IREV9I8-1714557
Abstract
This paper presents an improved drive mechanism for Sulphur Hexafluoride (SF6) High Voltage Circuit Breakers (HVCBs) deployed in 330/132kV transmission substations. The proposed system replaces the conventional servo-based permanent magnet synchronous motor (PMSM) with a stepper motor–based PMSM configuration to overcome challenges associated with inadequate holding torque and delayed tripping response. The modified drive mechanism was modeled and simulated using MATLAB/Simulink. Simulation results indicate that the proposed system delivers a peak torque of 120 Nm using a 10:1 gear reduction ratio, exceeding the required breaker load torque of 75 Nm. Furthermore, a reduction in tripping time of approximately 25% was achieved, demonstrating improved fault-clearing performance. The proposed mechanism enhances operational reliability, torque stability, and efficiency of SF6 HVCBs in high-voltage power systems.
Keywords
SF6 Circuit Breaker, Permanent Magnet Synchronous Motor, Stepper Motor, Holding Torque, High Voltage Substation.
How to cite this paper
@article{1714557,
author = {Umaru Shettima Abdullahi, Musa Abdulkadir, Modu Abba-Gana, Abdulkadir Ali Warude, Adamu Umar},
title = {Modification of Permanent Magnet Synchronous Motor Drive Mechanism of SF6 HVCBs of 330/132kV Transmission Substation},
journal = {Iconic Research And Engineering Journals},
year = {2026},
volume = {9},
number = {8},
pages = {2059-2065},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/1714557.pdf},
abstract = {This paper presents an improved drive mechanism for Sulphur Hexafluoride (SF6) High Voltage Circuit Breakers (HVCBs) deployed in 330/132kV transmission substations. The proposed system replaces the conventional servo-based permanent magnet synchronous motor (PMSM) with a stepper motor–based PMSM configuration to overcome challenges associated with inadequate holding torque and delayed tripping response. The modified drive mechanism was modeled and simulated using MATLAB/Simulink. Simulation results indicate that the proposed system delivers a peak torque of 120 Nm using a 10:1 gear reduction ratio, exceeding the required breaker load torque of 75 Nm. Furthermore, a reduction in tripping time of approximately 25% was achieved, demonstrating improved fault-clearing performance. The proposed mechanism enhances operational reliability, torque stability, and efficiency of SF6 HVCBs in high-voltage power systems.},
keywords = {SF6 Circuit Breaker, Permanent Magnet Synchronous Motor, Stepper Motor, Holding Torque, High Voltage Substation.},
month = {February},
doi = {https://doi.org/10.64388/IREV9I8-1714557}
}