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Simulation and Experimental Analysis of DC Arc Characteristics in Metal Splitter Plate
ID：126 View Protection：PUBLIC Updated Time：2020-10-18 11:16:30 Hits：805 Poster Presentation

Start Time：2020-11-04 16:00（Asia/Shanghai）

Duration：5min

Session：G Poster session » G4Poster Session 4 and Poster Session 9

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Abstract
Gas medium (N2, H2 or N2-H2 mixtures) and magnetic field are usually applied to extinguish the arc in high-voltage direct current (HVDC) relays. The presence of hydrogen will increase the probability of arc restriking, and when the arc extinguishing chamber is poorly sealed, it may also cause an explosion. The nitrogen reduces the probability of arc restriking, but the arc extinguishing time is similar to air. Therefore, in order to enhance the ability of arc extinguishing, avoid the arc restriking and increase the lifetime of the HVDC relay, the characteristics of the arc in the metal splitter plate and that of the arc root motion in the magnetic field are simulated by means of magnetohydrodynamics (MHD). The voltage and images of the arc are obtained by DC Arc Test System. The results show that increasing the external magnetic field is beneficial to the motion of the arc and shortens the time of arc movement on the contact surface. At the same time, the addition of the metal splitter plate on both sides of the contact is beneficial to increase the arc voltage and accelerate the arc extinguishing.
 
Keywords
Arc Motion, High Voltage DC Relay, MHD, Splitter Plate
Speaker
Huang Xin
Master student Fuzhou University

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

  • Conference Date

    Nov 02

    2020

    to

    Nov 04

    2020

  • Oct 27 2020

    Draft paper submission deadline

  • Nov 03 2020

    Contribution Submission Deadline

  • Nov 04 2020

    Registration deadline

  • Nov 17 2020

    Final Paper Deadline

Sponsored By
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
Organized By
Huazhong University of Science and Technology
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