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Simulation Analysis of Arc Motion of High Voltage DC Relay under Non-uniform Magnetic Field
ID：212 View Protection：ATTENDEE Updated Time：2021-12-03 10:48:16 Hits：1046 Oral Presentation

Start Time：2021-12-17 09:45（Asia/Shanghai）

Duration：15min

Session：H Other topics in Electrical Engineering » H3Session 30

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Abstract
Due to high voltage and current levels of high voltage DC (HVDC) relays and the absence of natural zero crossings in DC system, the arc generated during the breaking process of the relay has high energy and is difficult to extinguish, which affects the relay's breaking reliability and electrical life. In order to accelerate arc extinguishing, the permanent magnets are usually placed in the arc extinguishing chamber of the HVDC relay. The existing simulation analysis is mostly based on the uniform distribution of the magnetic field, while the distribution of the magnetic field generated by the permanent magnets is non-uniform. Therefore, based on the theory of magnetohydrodynamics (MHD), this paper establishes the numerical model of arc plasma and permanent magnets of HVDC relay by means of COMSOL Multiphysics software, analyzes the arc motion characteristics under the action of non-uniform magnetic field generated by permanent magnet. The results of the simulation analysis will provide a basis for the application of permanent magnets in HVDC relays.
 
Keywords
DC arc,High Voltage DC Relay,Non-uniform Magnetic Field,Restriking
Speaker
Qiong Lin
Fuzhou University

Submission Author
Qiong Lin Fuzhou University
Xin Huang Fuzhou University
Xiangjun Liu electrical contact theory and contact material, i Fuzhou University
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Important Date

  • Conference Date

    Jul 11

    2023

    to

    Aug 18

    2023

  • Nov 10 2021

    Draft paper submission deadline

  • Dec 10 2021

    Registration deadline

  • Dec 11 2021

    Contribution Submission Deadline

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IEEE IAS
Organized By
IEEE IAS Student Chapter of Southwest Jiaotong University (SWJTU)
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
IEEE PELS (Power Electronics Society) Student Chapter of HUST
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