Magneto-hydrodynamic simulation study of direct current multi-contact circuit breaker for equalizing breaking arc

Bowen JIA; Jianwen WU; Shu LI; Hao WU; Xiangjun PENG; Jian DAI; Ruang CHEN

doi:10.1088/2058-6272/ac910f

Plasma Science and Technology > 2023 > 25(2): 025506. > DOI: 10.1088/2058-6272/ac910f

Bowen JIA, Jianwen WU, Shu LI, Hao WU, Xiangjun PENG, Jian DAI, Ruang CHEN. Magneto-hydrodynamic simulation study of direct current multi-contact circuit breaker for equalizing breaking arc[J]. Plasma Science and Technology, 2023, 25(2): 025506. DOI: 10.1088/2058-6272/ac910f

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Magneto-hydrodynamic simulation study of direct current multi-contact circuit breaker for equalizing breaking arc

1.
Systems Engineering Institute, Academy of Military Sciences, Beijing 100071, People's Republic of China
2.
School of Automation Science and Electrical Engineering, Beihang University, Beijing 100083, People's Republic of China

More Information

Corresponding author:
Jianwen WU, E-mail: wujianwen@buaa.edu.cn
Received Date: May 15, 2022
Revised Date: September 07, 2022
Accepted Date: September 08, 2022
Available Online: December 05, 2023
Published Date: January 05, 2023

Graphical Abstract

Abstract

Abstract

This work is based on a direct current (DC) natural current commutation topology, which uses load-carrying branch contacts carrying rated current and multiple sets of series arcing branch contacts in parallel to achieve circuit breaking. The proposed topology can meet the new requirements of higher voltage DC switches in aviation, aerospace, energy and other fields. First, a magneto-hydrodynamic arc model is built using COMSOL Multiphysics, and the different arc breaking characteristics of the arcing branch contacts in different gas environments are simulated. Then, a voltage uniformity coefficient is used to measure the voltage sharing effect in the process of dynamic interruption. In order to solve the dispersion of arcing contact action, a structural control method is adopted to improve the voltage uniformity coefficient. The uniform voltage distribution can improve the breaking capacity and electrical life of the series connection structure.
- DC circuit breaker,
- voltage uniformity coefficient,
- MHD modelling,
- uniform-voltage regulation method

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Acknowledgments

This work is supported by National Natural Science Foundation of China (No. 51977002). This manuscript is recommended by the Third International Symposium on Insulation and Discharge Computation for Power Equipment (IDCOMPU2021). The physical parameters of the discharge gas were determined by GPLAS (www.plasma-data.net/index).

References (17)

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